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Wang Y, Zhang X, Wang J, Wang C, Xiong F, Qian Y, Meng M, Zhou M, Chen W, Ding Z, Yu D, Liu Y, Chang Y, He S, Yang L. Genomic insights into the seawater adaptation in Cyprinidae. BMC Biol 2024; 22:87. [PMID: 38637780 PMCID: PMC11027309 DOI: 10.1186/s12915-024-01885-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Accepted: 04/11/2024] [Indexed: 04/20/2024] Open
Abstract
BACKGROUND Cyprinidae, the largest fish family, encompasses approximately 367 genera and 3006 species. While they exhibit remarkable adaptability to diverse aquatic environments, it is exceptionally rare to find them in seawater, with the Far Eastern daces being of few exceptions. Therefore, the Far Eastern daces serve as a valuable model for studying the genetic mechanisms underlying seawater adaptation in Cyprinidae. RESULTS Here, we sequenced the chromosome-level genomes of two Far Eastern daces (Pseudaspius brandtii and P. hakonensis), the two known cyprinid fishes found in seawater, and performed comparative genomic analyses to investigate their genetic mechanism of seawater adaptation. Demographic history reconstruction of the two species reveals that their population dynamics are correlated with the glacial-interglacial cycles and sea level changes. Genomic analyses identified Pseudaspius-specific genetic innovations related to seawater adaptation, including positively selected genes, rapidly evolving genes, and conserved non-coding elements (CNEs). Functional assays of Pseudaspius-specific variants of the prolactin (prl) gene showed enhanced cell adaptation to greater osmolarity. Functional assays of Pseudaspius specific CNEs near atg7 and usp45 genes suggest that they exhibit higher promoter activity and significantly induced at high osmolarity. CONCLUSIONS Our results reveal the genome-wide evidence for the evolutionary adaptation of cyprinid fishes to seawater, offering valuable insights into the molecular mechanisms supporting the survival of migratory fish in marine environments. These findings are significant as they contribute to our understanding of how cyprinid fishes navigate and thrive in diverse aquatic habitats, providing useful implications for the conservation and management of marine ecosystems.
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Affiliation(s)
- Ying Wang
- Hubei Engineering Research Center for Protection and Utilization of Special Biological Resources in the Hanjiang River Basin, College of Life Sciences, Jianghan University, Wuhan, 430056, China.
- Academy of Plateau Science and Sustainability, Qinghai Normal University, Xining, 810016, China.
- School of Biological Sciences, University of Bristol, Life Sciences Building, 24 Tyndall Avenue, Bristol, BS81TQ, UK.
| | - Xuejing Zhang
- Hubei Engineering Research Center for Protection and Utilization of Special Biological Resources in the Hanjiang River Basin, College of Life Sciences, Jianghan University, Wuhan, 430056, China
| | - Jing Wang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Cheng Wang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Fei Xiong
- Hubei Engineering Research Center for Protection and Utilization of Special Biological Resources in the Hanjiang River Basin, College of Life Sciences, Jianghan University, Wuhan, 430056, China
| | - Yuting Qian
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Minghui Meng
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Min Zhou
- Hubei Engineering Research Center for Protection and Utilization of Special Biological Resources in the Hanjiang River Basin, College of Life Sciences, Jianghan University, Wuhan, 430056, China
| | - Wenjun Chen
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zufa Ding
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Dan Yu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yang Liu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yumei Chang
- National and Local Joint Engineering Laboratory for Freshwater Fish Breeding, Heilongjiang Province's Key Laboratory of Fish Stress Resistance Breeding and Germplasm Characteristics On Special Habitats, Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Harbin, 150070, Heilongjiang, China
| | - Shunping He
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China.
- Academy of Plateau Science and Sustainability, Qinghai Normal University, Xining, 810016, China.
| | - Liandong Yang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China.
- Academy of Plateau Science and Sustainability, Qinghai Normal University, Xining, 810016, China.
- School of Biological Sciences, University of Bristol, Life Sciences Building, 24 Tyndall Avenue, Bristol, BS81TQ, UK.
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Mainguy J, Arsenault A, Tran L, Martyniuk MAC, Paquet C, Moore JS, Power M. Otolith-inferred patterns of marine migration frequency in Nunavik Arctic charr. JOURNAL OF FISH BIOLOGY 2023; 103:884-896. [PMID: 37349978 DOI: 10.1111/jfb.15491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 06/21/2023] [Indexed: 06/24/2023]
Abstract
Alternative migratory tactics in salmonids reflect the large observed interindividual variation in spatial behaviour which may range from strict freshwater residency to uninterrupted anadromy. In Salvelinus, sea migrations are performed during the ice-free period as freshwater overwintering is thought to be obligatory due to physiological constraints. As a result, individuals can either migrate the next spring or remain in freshwater, as anadromy is generally considered facultative. In Arctic charr (Salvelinus alpinus), skipped migrations are known to occur, but limited data are available regarding their frequencies within and among populations. Here, the authors used an otolith microchemistry approach relying on strontium (88 Sr) to infer movements between freshwater and marine habitats, and annual oscillations in zinc (64 Zn) to help with age identification. They determined the age-at-first-migration and the occurrence of subsequent annual migrations in two Nunavik Arctic charr populations sampled in Deception Bay (Salluit) and river systems linked to Hopes Advance Bay (Aupaluk), northern Québec, Canada. The mode for age-at-first-migration was 4+ for both populations, although it exhibited large variation (range: 0+ to 8+). Skipped migrations constituted a rare event, as 97.7% and 95.6% of the examined Arctic charr at Salluit (n = 43, mean age = 10.3 ± 2.0 years) and Aupaluk (n = 45, mean age = 6.0 ± 1.9 years), respectively, were found to have performed uninterrupted annual migrations after initiation of the behaviour. The consistency of the annual migrations suggests that the tactic is sufficiently fitness rewarding to be maintained under current environmental conditions. From a fisheries management perspective, these repeated migrations combined with low site fidelity in this species may lead to large interannual variations in abundance at the local scale, which may represent a challenge for monitoring Arctic charr demographics on a river-by-river basis.
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Affiliation(s)
- Julien Mainguy
- Direction de l'expertise sur la faune aquatique, ministère de l'Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs, Québec, Québec, Canada
| | - Ariel Arsenault
- Direction de l'expertise sur la faune aquatique, ministère de l'Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs, Québec, Québec, Canada
| | - Lilian Tran
- Nunavik Research Centre, Makivik Corporation, Kuujjuaq, Québec, Canada
| | - Mackenzie A C Martyniuk
- Institut National de la Recherche Scientifique - Centre Eau Terre Environnement, Québec, Québec, Canada
| | - Catherine Paquet
- Direction de l'expertise sur la faune aquatique, ministère de l'Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs, Québec, Québec, Canada
| | - Jean-Sébastien Moore
- Institut de Biologie Intégrative et des Systèmes (IBIS) and Département de biologie, Pavillon Charles-Eugène-Marchand, Université Laval, Québec, Québec, Canada
| | - Michael Power
- Department of Biology, University of Waterloo, Waterloo, Ontario, Canada
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3
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Ugachi Y, Kitade H, Takahashi E, Suzuki S, Hayashi M, Yamada T, Cui W, Shimizu M. Size-driven parr-smolt transformation in masu salmon (Oncorhynchus masou). Sci Rep 2023; 13:16643. [PMID: 37789097 PMCID: PMC10547828 DOI: 10.1038/s41598-023-43632-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Accepted: 09/26/2023] [Indexed: 10/05/2023] Open
Abstract
Anadromous salmonids exhibit partial migration, where some individuals within a population migrate down to the ocean through complex interactions between body size and photoperiod. This study aimed to integrate the ontogenetic and seasonal patterns of smoltification, a series of changes for future marine life, in a strain of masu salmon (Oncorhynchus masou). Spring smoltification, as evidenced by the activation of gill Na+,K+-ATPase (NKA), was induced during winter under an advanced photoperiod. In addition, juveniles showed an additional peak in gill NKA activity in August regardless of the photoperiod. When juvenile masu salmon were subjected to feeding manipulations during the first spring/summer, only fish exceeding a fork length of 12 cm exhibited an increased gill NKA activity. We tested whether size-driven smoltification required a long-day period by exposing juveniles to a constant short-day length (9-h light and 15-h dark) from January to November. Juveniles under short-day conditions exceeded 12 cm in June but showed no signs of smoltification. Thus, masu salmon undergo photoperiod-limited, size-driven smoltification during the first summer and size-limited, photoperiod-driven smoltification the following spring. The findings of the present study provide a framework for further elucidation of the physiological mechanisms underlying partial migration in salmonids.
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Affiliation(s)
- Yuki Ugachi
- School of Fisheries Sciences, Hokkaido University, 3-1-1 Minato, Hakodate, Hokkaido, 041-8611, Japan
- Graduate School of Environmental Science, Hokkaido University, Kita 10, Nishi 5, Kita-ku, Sapporo, Hokkaido, 060-0810, Japan
| | - Haruka Kitade
- School of Fisheries Sciences, Hokkaido University, 3-1-1 Minato, Hakodate, Hokkaido, 041-8611, Japan
| | - Eisuke Takahashi
- Nanae Fresh-Water Station, Field Science Center Northern Biosphere, Hokkaido University, 2-9-1 Sakura, Nanae, Kameda-gun, Hokkaido, 041-1105, Japan
| | - Shotaro Suzuki
- Graduate School of Environmental Science, Hokkaido University, Kita 10, Nishi 5, Kita-ku, Sapporo, Hokkaido, 060-0810, Japan
| | - Mizuki Hayashi
- Graduate School of Environmental Science, Hokkaido University, Kita 10, Nishi 5, Kita-ku, Sapporo, Hokkaido, 060-0810, Japan
| | - Taiga Yamada
- School of Fisheries Sciences, Hokkaido University, 3-1-1 Minato, Hakodate, Hokkaido, 041-8611, Japan
| | - Wenda Cui
- Graduate School of Environmental Science, Hokkaido University, Kita 10, Nishi 5, Kita-ku, Sapporo, Hokkaido, 060-0810, Japan
| | - Munetaka Shimizu
- Faculty of Fisheries Sciences, Hokkaido University, 3-1-1 Minato, Hakodate, Hokkaido, 041-8611, Japan.
- Field Science Center for Northern Biosphere, Hokkaido University, 3-1-1, Hakodate, Hokkaido, 041-8611, Japan.
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4
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Markevich GN, Pavlova NS, Kapitanova DV, Esin EV. Bone calcification rate as a factor of craniofacial transformations in salmonid fish: Insights from an experiment with hormonal treatment of calcium metabolism. Evol Dev 2023; 25:274-288. [PMID: 37540043 DOI: 10.1111/ede.12453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 07/18/2023] [Accepted: 07/21/2023] [Indexed: 08/05/2023]
Abstract
Adaptation to different environments can be achieved by physiological shifts throughout development. Hormonal regulators shape the physiological and morphological traits of the evolving animals making them fit for the particular ecological surroundings. We hypothesized that the artificially induced hypersynthesis of calcitonin and parathyroid hormone mutually influencing calcium metabolism could affect bone formation during early ontogeny in fish imitating the heterochrony in craniofacial ossification in natural adaptive morphs. Conducting an experiment, we found that the long-standing treatment of salmonid juveniles with high doses of both hormones irreversibly shifts the corresponding hormone status for a period well beyond the time scale for total degradation of the injected hormone. The hormones program the ossification of the jaw suspension bones and neurocranial elements in a specific manner affecting the jaws position and pharingo-branchial area stretching. These morphological shifts resemble the adaptive variants found in sympatric pelagic and demersal morphs of salmonids. We conclude that solitary deviations in the regulators of calcium metabolism could determine functional morphological traits via transformations in skeletal development.
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Affiliation(s)
- Grigorii N Markevich
- Lab of Lower Vertabrate Ecology, Lab of Evolutionary Morphology, A.N. Severtsov Institute of Ecology and Evolution of the Russian Academy of Sciences, Moscow, Russia
- Scientific Department, Kronotsky Nature Reserve, Yelizovo, Kamchatka Region, Russia
| | - Nadezhda S Pavlova
- Department of Human and Animal Physiology, Lomonosov Moscow State University, Faculty of Biology, Moscow, Russia
| | - Daria V Kapitanova
- Lab of Lower Vertabrate Ecology, Lab of Evolutionary Morphology, A.N. Severtsov Institute of Ecology and Evolution of the Russian Academy of Sciences, Moscow, Russia
- Lab of Postnatal Ontogenesis, N.K. Koltsov Institute of Developmental Biology of the Russian Academy of Sciences, Moscow, Russia
| | - Evgeny V Esin
- Lab of Lower Vertabrate Ecology, Lab of Evolutionary Morphology, A.N. Severtsov Institute of Ecology and Evolution of the Russian Academy of Sciences, Moscow, Russia
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5
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Wynne R, Kaufmann J, Coughlan J, Phillips KP, Waters C, Finlay RW, Rogan G, Poole R, McGinnity P, Reed TE. Autumn outmigrants in brown trout (Salmo trutta) are not a demographic dead-end. JOURNAL OF FISH BIOLOGY 2023; 102:1327-1339. [PMID: 36911993 DOI: 10.1111/jfb.15377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2023] [Accepted: 03/10/2023] [Indexed: 06/09/2023]
Abstract
Genetic identity analysis and PIT (passive integrated transponder) tagging were used to examine the freshwater return rates and phenotypic characteristics of n = 1791 downstream migrating juvenile Salmo trutta in the Burrishoole catchment (northwest Ireland) across the period September 2017 to December 2020. In this system, juveniles out-migrate (move from freshwater into brackish or marine habitats) in every month of the year, with distinct seasonal peaks in spring (March through June; mostly silvered smolts) and autumn (September through December; mostly younger, unsilvered fry or parr). Both types exhibited a sex-bias towards females, which was stronger in spring (78% females) than in autumn outmigrants (67%). Sixty-nine returning fish were matched back to previous juvenile outmigrants, and similar return rates were found for spring outmigrants (5.0%), autumn outmigrants (3.3%) and fish that out-migrated outside of spring or autumn (2.8%). Spring and autumn outmigrants returned at similar dates (typically mid to late July), but autumn fish were away for longer periods (median = 612 days; spring outmigrants = 104 days). Autumn outmigrants were 25% smaller than spring outmigrants at outmigration and 6% smaller on their return, and within both groups smaller/younger outmigrants spent longer away than larger/older outmigrants. Autumn outmigrants were more likely to return unsilvered as "slob" trout (84%) than spring outmigrants (31%), suggesting they make greater use of brackish habitats that might be safer, but less productive, than fully marine habitats. Nonetheless, both types also produced silvered "sea trout" (≥1+ sea-age), implying neither is locked into a single life-history strategy. The findings emphasise that autumn outmigrants and the transitional habitats that support their persistence should not be overlooked in salmonid management and conservation.
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Affiliation(s)
- Robert Wynne
- School of Biological, Earth and Environmental Sciences, University College Cork, Cork, Ireland
- Environmental Research Institute, University College Cork, Cork, Ireland
| | | | - Jamie Coughlan
- School of Biological, Earth and Environmental Sciences, University College Cork, Cork, Ireland
- Environmental Research Institute, University College Cork, Cork, Ireland
| | - Karl P Phillips
- Canadian Rivers Institute, University of New Brunswick, Fredericton, New Brunswick, Canada
| | | | - Ross W Finlay
- School of Biological, Earth and Environmental Sciences, University College Cork, Cork, Ireland
- Environmental Research Institute, University College Cork, Cork, Ireland
- Marine Institute, Furnace, Newport, Co. Mayo, Ireland
| | - Ger Rogan
- Marine Institute, Furnace, Newport, Co. Mayo, Ireland
| | - Russell Poole
- Marine Institute, Furnace, Newport, Co. Mayo, Ireland
| | - Philip McGinnity
- School of Biological, Earth and Environmental Sciences, University College Cork, Cork, Ireland
- Environmental Research Institute, University College Cork, Cork, Ireland
- Marine Institute, Furnace, Newport, Co. Mayo, Ireland
| | - Thomas E Reed
- School of Biological, Earth and Environmental Sciences, University College Cork, Cork, Ireland
- Environmental Research Institute, University College Cork, Cork, Ireland
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6
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Clare CI, Nichols KM, Thrower FP, Berntson EA, Hale MC. Comparative genomics of rainbow trout ( Oncorhynchus mykiss): Is the genetic architecture of migratory behavior conserved among populations? Ecol Evol 2023; 13:e10241. [PMID: 37384247 PMCID: PMC10293719 DOI: 10.1002/ece3.10241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 06/01/2023] [Accepted: 06/12/2023] [Indexed: 06/30/2023] Open
Abstract
Rainbow trout (Oncorhynchus mykiss) are a partially migratory species wherein some individuals undergo long-distance anadromous migrations, and others stay as residents in their native freshwater streams. The decision to migrate is known to be highly heritable, and yet, the underlying genes and alleles associated with migration are not fully characterized. Here we used a pooled approach of whole-genome sequence data from migratory and resident trout of two native populations-Sashin Creek, Alaska and Little Sheep Creek, Oregon-to obtain a genome-wide perspective of the genetic architecture of resident and migratory life history. We calculated estimates of genetic differentiation, genetic diversity, and selection between the two phenotypes to locate regions of interest and then compared these associations between populations. We identified numerous genes and alleles associated with life history development in the Sashin Creek population with a notable area on chromosome 8 that may play a critical role in the development of the migratory phenotype. However, very few alleles appeared to be associated with life history development in the Little Sheep Creek system, suggesting population-specific genetic effects are likely important in the development of anadromy. Our results indicate that a migratory life history is not controlled by a singular gene or region but supports the idea that there are many independent ways for a migratory phenotype to emerge in a population. Therefore, conserving and promoting genetic diversity in migratory individuals is paramount to conserving these populations. Ultimately, our data add to a growing body of literature that suggests that population-specific genetic effects, likely mediated through environmental variation, contribute to life history development in rainbow trout.
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Affiliation(s)
| | - Krista M. Nichols
- Conservation Biology Division, Northwest Fisheries Science CenterNational Marine Fisheries Service, National Oceanic and Atmospheric AdministrationSeattleWashingtonUSA
| | - Frank P. Thrower
- Ted Stevens Marine Research Institute, Alaska Fisheries Science Center, NOAAJuneauAlaskaUSA
| | - Ewann A. Berntson
- Conservation Biology Division, Northwest Fisheries Science CenterNational Marine Fisheries Service, National Oceanic and Atmospheric AdministrationSeattleWashingtonUSA
| | - Matthew C. Hale
- Department of BiologyTexas Christian UniversityFort WorthTexasUSA
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7
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Buchinger TJ, Hondorp DW, Krueger CC. Spatiotemporal segregation by migratory phenotype indicates potential for assortative mating in lake sturgeon. Oecologia 2023; 201:953-964. [PMID: 36995424 DOI: 10.1007/s00442-022-05280-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 10/31/2022] [Indexed: 03/31/2023]
Abstract
Migratory diversity can promote population differentiation if sympatric phenotypes become temporally, spatially, or behaviorally segregated during breeding. In this study, the potential for spatiotemporal segregation was tested among three migratory phenotypes of lake sturgeon (Acipenser fulvescens) that spawn in the St. Clair River of North America's Laurentian Great Lakes but differ in how often they migrate into the river and in which direction they move after spawning. Acoustic telemetry over 9 years monitored use of two major spawning sites by lake sturgeon that moved north to overwinter in Lake Huron or south to overwinter in Lake St. Clair. Lake St. Clair migrants were further distinguished by whether they migrated into the St. Clair River each year (annual migrants) or intermittently (intermittent migrants). Social network analyses indicated lake sturgeon generally co-occurred with individuals of the same migratory phenotype more often than with different migratory phenotypes. A direct test for differences in space use revealed one site was almost exclusively visited by Lake St. Clair migrants whereas the other site was visited by Lake Huron migrants, intermittent Lake St. Clair migrants, and, to a lesser extent, annual Lake St. Clair migrants. Analysis of arrival and departure dates indicated opportunity for co-occurrence at the site visited by all phenotypes but showed Lake Huron migrants arrived approximately 2 weeks before Lake St. Clair migrants. Taken together, our results indicated partial spatiotemporal segregation of migratory phenotypes that may generate assortative mating and promote population differentiation.
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Affiliation(s)
- Tyler J Buchinger
- Department of Fisheries and Wildlife, Center for Systems Integration and Sustainability, Michigan State University, East Lansing, MI, 48824, USA.
- Great Lakes Science Center, U. S. Geological Survey, 1451 Green Rd., Ann Arbor, MI, 48105, USA.
| | - Darryl W Hondorp
- Great Lakes Science Center, U. S. Geological Survey, 1451 Green Rd., Ann Arbor, MI, 48105, USA
| | - Charles C Krueger
- Department of Fisheries and Wildlife, Center for Systems Integration and Sustainability, Michigan State University, East Lansing, MI, 48824, USA
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8
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Vera M, Aparicio E, Heras S, Abras A, Casanova A, Roldán MI, García-Marin JL. Regional environmental and climatic concerns on preserving native gene pools of a least concern species: Brown trout lineages in Mediterranean streams. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 862:160739. [PMID: 36502686 DOI: 10.1016/j.scitotenv.2022.160739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 11/10/2022] [Accepted: 12/03/2022] [Indexed: 06/17/2023]
Abstract
The European brown trout, Salmo trutta, is a cold-adapted fish reported as a Least Concern species in the IUCN Red List. This species colonized new territories from southern refuges during the last glacial melting, but during the 20th century suffered from anthropic impacts on its habitats. The long-time survival of the species relies on the genetic diversity within and among populations. Brown trout is among the genetically most diverse vertebrate species; however, native populations in Mediterranean rivers have dramatically suffered of introgressive hybridization from extensive releases of evolutionary distant non-native Atlantic stocks. In addition, in Mediterranean rivers climate change will result in unsuitable conditions for the species during the 21st century. Using brown trout populations at the headstreams of a Pyrenean river as a model, this paper revised how hatchery releases have affected the native gene pools and how environmental and climatic variables controlled the amount of local introgression at intra-basin level. Introgressive hybridization was detected in all studied sites. Ten times larger divergence was observed among populations at tributaries than among populations along the main stem. A highly impacted population distributed in a long transect in the main stem suggested that hatchery fish move towards the main stem wherever released. From already highly impacted populations and despite the cessation of hatchery releases, warmer temperatures and lower precipitation expected from climate change will extend the introgressive hybridization along the basin, contributing to the extinction of the native gene pools. Based on available morphological distinction of native, hatchery and hybrid brown trout, we advocate the involvement of regional social groups (e.g. riverside dwellers, anglers, conservationists, hikers) in citizen science programs to detect the spread of non-native phenotypes along the rivers. These are cheap and fast methods to collaborate with fishery managers in the preservation and recovery of the regional native populations.
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Affiliation(s)
- Manuel Vera
- Departamento de Zoología, Xenética e Antropología Física, Campus Lugo, Universidad de Santiago de Compostela, 27002 Lugo, Spain.
| | - Enric Aparicio
- GRECO, Institute of Aquatic Ecology, University of Girona, 17071 Girona, Spain
| | - Sandra Heras
- Laboratori d'Ictiologia Genètica, Campus Montilivi, Universitat de Girona, 17003 Girona, Spain.
| | - Alba Abras
- Laboratori d'Ictiologia Genètica, Campus Montilivi, Universitat de Girona, 17003 Girona, Spain.
| | - Adrián Casanova
- Laboratori d'Ictiologia Genètica, Campus Montilivi, Universitat de Girona, 17003 Girona, Spain
| | - Maria-Inés Roldán
- Laboratori d'Ictiologia Genètica, Campus Montilivi, Universitat de Girona, 17003 Girona, Spain.
| | - Jose-Luis García-Marin
- Laboratori d'Ictiologia Genètica, Campus Montilivi, Universitat de Girona, 17003 Girona, Spain.
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9
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Dysin AP, Shcherbakov YS, Nikolaeva OA, Terletskii VP, Tyshchenko VI, Dementieva NV. Salmonidae Genome: Features, Evolutionary and Phylogenetic Characteristics. Genes (Basel) 2022; 13:genes13122221. [PMID: 36553488 PMCID: PMC9778375 DOI: 10.3390/genes13122221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 10/19/2022] [Accepted: 11/24/2022] [Indexed: 11/29/2022] Open
Abstract
The salmon family is one of the most iconic and economically important fish families, primarily possessing meat of excellent taste as well as irreplaceable nutritional and biological value. One of the most common and, therefore, highly significant members of this family, the Atlantic salmon (Salmo salar L.), was not without reason one of the first fish species for which a high-quality reference genome assembly was produced and published. Genomic advancements are becoming increasingly essential in both the genetic enhancement of farmed salmon and the conservation of wild salmon stocks. The salmon genome has also played a significant role in influencing our comprehension of the evolutionary and functional ramifications of the ancestral whole-genome duplication event shared by all Salmonidae species. Here we provide an overview of the current state of research on the genomics and phylogeny of the various most studied subfamilies, genera, and individual salmonid species, focusing on those studies that aim to advance our understanding of salmonid ecology, physiology, and evolution, particularly for the purpose of improving aquaculture production. This review should make potential researchers pay attention to the current state of research on the salmonid genome, which should potentially attract interest in this important problem, and hence the application of new technologies (such as genome editing) in uncovering the genetic and evolutionary features of salmoniforms that underlie functional variation in traits of commercial and scientific importance.
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Affiliation(s)
- Artem P. Dysin
- Russian Research Institute of Farm Animal Genetics and Breeding-Branch of the L.K. Ernst Federal Research Center for Animal Husbandry, Pushkin, 196601 St. Petersburg, Russia
- Correspondence:
| | - Yuri S. Shcherbakov
- Russian Research Institute of Farm Animal Genetics and Breeding-Branch of the L.K. Ernst Federal Research Center for Animal Husbandry, Pushkin, 196601 St. Petersburg, Russia
| | - Olga A. Nikolaeva
- Russian Research Institute of Farm Animal Genetics and Breeding-Branch of the L.K. Ernst Federal Research Center for Animal Husbandry, Pushkin, 196601 St. Petersburg, Russia
| | - Valerii P. Terletskii
- All-Russian Research Veterinary Institute of Poultry Science-Branch of the Federal Scientific Center, All-Russian Research and Technological Poultry Institute (ARRVIPS), Lomonosov, 198412 St. Petersburg, Russia
| | - Valentina I. Tyshchenko
- Russian Research Institute of Farm Animal Genetics and Breeding-Branch of the L.K. Ernst Federal Research Center for Animal Husbandry, Pushkin, 196601 St. Petersburg, Russia
| | - Natalia V. Dementieva
- Russian Research Institute of Farm Animal Genetics and Breeding-Branch of the L.K. Ernst Federal Research Center for Animal Husbandry, Pushkin, 196601 St. Petersburg, Russia
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10
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Reid JM. Intrinsic emergence and modulation of sex-specific dominance reversals in threshold traits. Evolution 2022; 76:1924-1941. [PMID: 35803581 PMCID: PMC9541474 DOI: 10.1111/evo.14563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 06/24/2022] [Accepted: 06/30/2022] [Indexed: 01/22/2023]
Abstract
Sex-specific dominance reversals (SSDRs) in fitness-related traits, where heterozygotes' phenotypes resemble those of alternative homozygotes in females versus males, can simultaneously maintain genetic variation in fitness and resolve sexual conflict and thereby shape key evolutionary outcomes. However, the full implications of SSDRs will depend on how they arise and the resulting potential for evolutionary, ecological and environmental modulation. Recent field and laboratory studies have demonstrated SSDRs in threshold(-like) traits with dichotomous or competitive phenotypic outcomes, implying that such traits could promote the emergence of SSDRs. However, such possibilities have not been explicitly examined. I show how phenotypic SSDRs can readily emerge in threshold traits given genetic architectures involving large-effect loci alongside sexual dimorphism in the mean and variance in polygenic liability. I also show how multilocus SSDRs can arise in line-cross experiments, especially given competitive reproductive systems that generate nonlinear fitness outcomes. SSDRs can consequently emerge in threshold(-like) traits as functions of sexual antagonism, sexual dimorphism and reproductive systems, even with purely additive underlying genetic effects. Accordingly, I identify theoretical and empirical advances that are now required to discern the basis and occurrence of SSDRs in nature, probe forms of (co-)evolutionary, ecological and environmental modulation, and evaluate net impacts on sexual conflict.
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Affiliation(s)
- Jane M. Reid
- Centre for Biodiversity DynamicsNTNUTrondheimNorway,School of Biological SciencesUniversity of AberdeenAberdeenUK
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11
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Chmura HE, Williams CT. A cross-taxonomic perspective on the integration of temperature cues in vertebrate seasonal neuroendocrine pathways. Horm Behav 2022; 144:105215. [PMID: 35687987 DOI: 10.1016/j.yhbeh.2022.105215] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 05/11/2022] [Accepted: 06/02/2022] [Indexed: 02/08/2023]
Abstract
The regulation of seasonality has been an area of interest for decades, yet global climate change has created extra urgency in the quest to understand how sensory circuits and neuroendocrine control systems interact to generate flexibility in biological timekeeping. The capacity of temperature to alter endogenous or photoperiod-regulated neuroendocrine mechanisms driving seasonality, either as a direct cue or through temperature-dependent effects on energy and metabolism, is at the heart of this phenological flexibility. However, until relatively recently, little research had been done on the integration of temperature information in canonical seasonal neuroendocrine pathways, particularly in vertebrates. We review recent advances from research in vertebrates that deepens our understanding of how temperature cues are perceived and integrated into seasonal hypothalamic thyroid hormone (TH) signaling, which is a critical regulator of downstream seasonal phenotypic changes such as those regulated by the BPG (brain-pituitary-gonadal) axis. Temperature perception occurs through cutaneous transient receptor potential (TRP) neurons, though sensitivity of these neurons varies markedly across taxa. Although photoperiod is the dominant cue used to trigger seasonal physiology or entrain circannual clocks, across birds, mammals, fish, reptiles and amphibians, seasonality appears to be temperature sensitive and in at least some cases this appears to be related to phylogenetically conserved TH signaling in the hypothalamus. Nevertheless, the exact mechanisms through which temperature modulates seasonal neuroendocrine pathways remains poorly understood.
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Affiliation(s)
- Helen E Chmura
- Institute of Arctic Biology, University of Alaska Fairbanks, 2140 Koyukuk Drive, Fairbanks, AK 99775, USA; Rocky Mountain Research Station, United States Forest Service, 800 E. Beckwith Ave., Missoula, MT 59801, USA.
| | - Cory T Williams
- Department of Biology, Colorado State University, 1878 Campus Delivery Fort Collins, CO 80523, USA
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12
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Holdridge EM, Vasseur DA. Intraspecific variation promotes coexistence under competition for essential resources. THEOR ECOL-NETH 2022. [DOI: 10.1007/s12080-022-00539-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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13
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Zolotarenko AD, Shitova MV. Transcriptome Studies of Salmonid Fishes of the Genius Oncorhynchus. RUSS J GENET+ 2022. [DOI: 10.1134/s102279542207016x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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14
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Hahlbeck N, Tinniswood WR, Sloat MR, Ortega JD, Wyatt MA, Hereford ME, Ramirez BS, Crook DA, Anlauf-Dunn KJ, Armstrong JB. Contribution of warm habitat to cold-water fisheries. CONSERVATION BIOLOGY : THE JOURNAL OF THE SOCIETY FOR CONSERVATION BIOLOGY 2022; 36:e13857. [PMID: 34766374 DOI: 10.1111/cobi.13857] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 10/24/2021] [Accepted: 10/29/2021] [Indexed: 06/13/2023]
Abstract
A central tenet of landscape ecology is that mobile species depend on complementary habitats, which are insufficient in isolation, but combine to support animals through the full annual cycle. However, incorporating the dynamic needs of mobile species into conservation strategies remains a challenge, particularly in the context of climate adaptation planning. For cold-water fishes, it is widely assumed that maximum temperatures are limiting and that summer data alone can predict refugia and population persistence. We tested these assumptions in populations of redband rainbow trout (Oncorhynchus mykiss newberrii) in an arid basin, where the dominance of hot, hyperproductive water in summer emulates threats of climate change predicted for cold-water fish in other basins. We used telemetry to reveal seasonal patterns of movement and habitat use. Then, we compared contributions of hot and cool water to growth with empirical indicators of diet and condition (gut contents, weight-length ratios, electric phase angle, and stable isotope signatures) and a bioenergetics model. During summer, trout occurred only in cool tributaries or springs (<20 °C) and avoided Upper Klamath Lake (>25 °C). During spring and fall, ≥65% of trout migrated to the lake (5-50 km) to forage. Spring and fall growth (mean [SD] 0.58% per day [0.80%] and 0.34 per day [0.55%], respectively) compensated for a net loss of energy in cool summer refuges (-0.56% per day [0.55%]). In winter, ≥90% of trout returned to tributaries (25-150 km) to spawn. Thus, although perennially cool tributaries supported thermal refuge and spawning, foraging opportunities in the seasonally hot lake ultimately fueled these behaviors. Current approaches to climate adaptation would prioritize the tributaries for conservation but would devalue critical foraging habitat because the lake is unsuitable and unoccupied during summer. Our results empirically demonstrate that warm water can fuel cold-water fisheries and challenge the common practice of identifying refugia based only on summer conditions.
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Affiliation(s)
- Nick Hahlbeck
- Department of Fisheries and Wildlife, Oregon State University, Corvallis, Oregon, USA
| | - William R Tinniswood
- Klamath Watershed District Office, Oregon Department of Fish and Wildlife, Klamath Falls, Oregon, USA
| | | | - Jordan D Ortega
- Department of Fisheries and Wildlife, Oregon State University, Corvallis, Oregon, USA
| | - Matthew A Wyatt
- Klamath Watershed District Office, Oregon Department of Fish and Wildlife, Klamath Falls, Oregon, USA
| | - Mark E Hereford
- Klamath Watershed District Office, Oregon Department of Fish and Wildlife, Klamath Falls, Oregon, USA
| | - Ben S Ramirez
- Klamath Watershed District Office, Oregon Department of Fish and Wildlife, Klamath Falls, Oregon, USA
| | - David A Crook
- Research Institute for the Environment and Livelihoods, Charles Darwin University, Darwin, Northern Territory, Australia
| | - Kara J Anlauf-Dunn
- Corvallis Research Lab, Oregon Department of Fish and Wildlife, Corvallis, Oregon, USA
| | - Jonathan B Armstrong
- Department of Fisheries and Wildlife, Oregon State University, Corvallis, Oregon, USA
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15
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Kane A, Ayllón D, O’Sullivan RJ, McGinnity P, Reed TE. Escalating the conflict? Intersex genetic correlations influence adaptation to environmental change in facultatively migratory populations. Evol Appl 2022; 15:773-789. [PMID: 35603024 PMCID: PMC9108303 DOI: 10.1111/eva.13368] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 02/11/2022] [Accepted: 02/17/2022] [Indexed: 11/28/2022] Open
Abstract
Males and females are often subject to different and even opposing selection pressures. When a given trait has a shared genetic basis between the sexes, sexual conflict (antagonism) can arise. This can result in significant individual-level fitness consequences that might also affect population performance, whilst anthropogenic environmental change can further exacerbate maladaptation in one or both sexes driven by sexual antagonism. Here, we develop a genetically explicit eco-evolutionary model using an agent-based framework to explore how a population of a facultatively migratory fish species (brown trout Salmo trutta) adapts to environmental change across a range of intersex genetic correlations for migration propensity, which influence the magnitude of sexual conflict. Our modelled focal trait represents a condition threshold governing whether individuals adopt a resident or anadromous (sea migration) tactic. Anadromy affords potential size-mediated reproductive advantages to both males and females due to improved feeding opportunities at sea, but these can be undermined by high background marine mortality and survival/growth costs imposed by marine parasites (sea lice). We show that migration tactic frequency for a given set of environmental conditions is strongly influenced by the intersex genetic correlation, such that one sex can be dragged off its optimum more than the other. When this occurred in females in our model, population productivity was substantially reduced, but eco-evolutionary outcomes were altered by allowing for sneaking behaviour in males. We discuss real-world implications of our work given that anadromous salmonids are regularly challenged by sea lice infestations, which might act synergistically with other stressors such as climate change or fishing that impact marine performance, driving populations towards residency and potentially reduced resilience.
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Affiliation(s)
- Adam Kane
- School of Biology and Environmental Science and Earth InstituteUniversity College DublinDublinIreland
| | - Daniel Ayllón
- Faculty of BiologyDepartment of Biodiversity, Ecology and EvolutionComplutense University of Madrid (UCM)MadridSpain
| | - Ronan James O’Sullivan
- Organismal and Evolutionary Biology Research ProgrammeFaculty of Biological and Environmental SciencesUniversity of HelsinkiHelsinkiFinland
- School of Biological, Earth and Environmental SciencesUniversity College CorkCorkIreland
- Environmental Research InstituteUniversity College CorkCorkIreland
| | - Philip McGinnity
- School of Biological, Earth and Environmental SciencesUniversity College CorkCorkIreland
- Environmental Research InstituteUniversity College CorkCorkIreland
- Marine InstituteFurnaceNewportIreland
| | - Thomas Eric Reed
- School of Biological, Earth and Environmental SciencesUniversity College CorkCorkIreland
- Environmental Research InstituteUniversity College CorkCorkIreland
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16
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Russell A, Taylor MD, Barnes TC, Johnson DD, Gillanders BM. Habitat transitions by a large coastal sciaenid across life history stages, resolved using otolith chemistry. MARINE ENVIRONMENTAL RESEARCH 2022; 176:105614. [PMID: 35381507 DOI: 10.1016/j.marenvres.2022.105614] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 03/21/2022] [Accepted: 03/22/2022] [Indexed: 06/14/2023]
Abstract
Many coastal species move between estuarine and coastal environments throughout their life. Migration patterns develop as a result of ecology and evolution and must be understood to effectively manage harvested stocks. This study examined movements across estuarine and coastal marine habitats in adult Mulloway (Argyrosomus japonicus); a commercially, indigenous and recreationally harvested sciaenid of south-eastern Australia. Chemical profiles across the otolith (ear bone) were used to examine transitions between estuary and marine habitats over life history. Patterns in otolith Ba:Ca concentrations indicated that the majority of fish migrated between estuary and marine habitats, but a small proportion of fish appeared to remain in either the estuary or the marine habitat. Such movements may potentially be driven by a range of biological and environmental factors. This approach allows questions about the life history and habitat use of Mulloway to be addressed, which will aid management and provide a platform for future research on Mulloway, other sciaenid's and coastal migratory species.
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Affiliation(s)
- Angela Russell
- Southern Seas Ecology Laboratories, School of Biological Sciences, University of Adelaide, SA, 5005, Australia; Port Stephens Fisheries Institute, New South Wales Department of Primary Industries, Locked Bag 1, Nelson Bay, NSW, 2315, Australia.
| | - Matthew D Taylor
- Port Stephens Fisheries Institute, New South Wales Department of Primary Industries, Locked Bag 1, Nelson Bay, NSW, 2315, Australia
| | - Thomas C Barnes
- Port Stephens Fisheries Institute, New South Wales Department of Primary Industries, Locked Bag 1, Nelson Bay, NSW, 2315, Australia; Institute of Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania, Australia
| | - Daniel D Johnson
- Port Stephens Fisheries Institute, New South Wales Department of Primary Industries, Locked Bag 1, Nelson Bay, NSW, 2315, Australia
| | - Bronwyn M Gillanders
- Southern Seas Ecology Laboratories, School of Biological Sciences, University of Adelaide, SA, 5005, Australia
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17
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Turbek SP, Schield DR, Scordato ESC, Contina A, Da XW, Liu Y, Liu Y, Pagani-Núñez E, Ren QM, Smith CCR, Stricker CA, Wunder M, Zonana DM, Safran RJ. A migratory divide spanning two continents is associated with genomic and ecological divergence. Evolution 2022; 76:722-736. [PMID: 35166383 DOI: 10.1111/evo.14448] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 12/21/2021] [Accepted: 12/29/2021] [Indexed: 01/22/2023]
Abstract
Migratory divides are contact zones between breeding populations with divergent migratory strategies during the nonbreeding season. These locations provide an opportunity to evaluate the role of seasonal migration in the maintenance of reproductive isolation, particularly the relationship between population structure and features associated with distinct migratory strategies. We combine light-level geolocators, genomic sequencing, and stable isotopes to investigate the timing of migration and migratory routes of individuals breeding on either side of a migratory divide coinciding with genomic differentiation across a hybrid zone between barn swallow (Hirundo rustica) subspecies in China. Individuals west of the hybrid zone, with H. r. rustica ancestry, had comparatively enriched stable-carbon and hydrogen isotope values and overwintered in eastern Africa, whereas birds east of the hybrid zone, with H. r. gutturalis ancestry, had depleted isotope values and migrated to southern India. The two subspecies took divergent migratory routes around the high-altitude Karakoram Range and arrived on the breeding grounds over 3 weeks apart. These results indicate that assortative mating by timing of arrival and/or selection against hybrids with intermediate migratory traits may maintain reproductive isolation between the subspecies, and that inhospitable geographic features may have contributed to the diversification of Asian avifauna by influencing migratory patterns.
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Affiliation(s)
- Sheela P Turbek
- Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, Colorado, 80309
| | - Drew R Schield
- Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, Colorado, 80309
| | - Elizabeth S C Scordato
- Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, Colorado, 80309.,Department of Biological Sciences, Cal Poly Pomona, Pomona, California, 91768
| | - Andrea Contina
- Department of Integrative Biology, University of Colorado, Denver, Colorado, 80217
| | - Xin-Wei Da
- College of Life Science, Wuhan University, Wuhan, 430072, China
| | - Yang Liu
- School of Ecology, Sun Yat-sen University, Guangzhou, 510275, China
| | - Yu Liu
- Key Laboratory for Biodiversity Sciences and Ecological Engineering, College of Life Sciences, Beijing Normal University, Beijing, 100875, China
| | - Emilio Pagani-Núñez
- Department of Health and Environmental Sciences, Xi'an Jiaotong-Liverpool University, Suzhou, 215123, China
| | - Qing-Miao Ren
- School of Life Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Chris C R Smith
- Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, Colorado, 80309
| | - Craig A Stricker
- U.S. Geological Survey, Fort Collins Science Center, Fort Collins, Colorado, 80526
| | - Michael Wunder
- Department of Integrative Biology, University of Colorado, Denver, Colorado, 80217
| | - David M Zonana
- Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, Colorado, 80309.,Department of Biological Sciences, University of Denver, Denver, Colorado, 80210
| | - Rebecca J Safran
- Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, Colorado, 80309
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18
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Reid JM, Acker P. Properties of phenotypic plasticity in discrete threshold traits. Evolution 2021; 76:190-206. [PMID: 34874068 DOI: 10.1111/evo.14408] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 10/11/2021] [Accepted: 10/31/2021] [Indexed: 12/25/2022]
Abstract
Forms of phenotypic plasticity in key traits, and forms of selection on and genetic variation in such plasticity, fundamentally underpin phenotypic, population dynamic, and evolutionary responses to environmental variation and directional change. Accordingly, numerous theoretical and empirical studies have examined properties and consequences of plasticity, primarily considering traits that are continuously distributed on observed phenotypic scales with linear reaction norms. However, many environmentally sensitive traits are expressed as discrete alternative phenotypes and are appropriately characterized as quantitative genetic threshold traits. Here, we highlight that forms of phenotypic plasticity, genetic variation, and inheritance in plasticity, and outcomes of selection on plasticity, could differ substantially between threshold traits and continuously distributed traits (as are typically considered). We thereby highlight theoretical developments that are required to rationalize and predict phenotypic and microevolutionary dynamics involving plastic threshold traits, and outline how intrinsic properties of such traits could provide relatively straightforward explanations for apparently idiosyncratic observed patterns of phenotypic variation. We summarize how key quantitative genetic parameters underlying threshold traits can be estimated, and thereby set the scene for embedding dynamic discrete traits into theoretical and empirical understanding of the role of plasticity in driving phenotypic, population, and evolutionary responses to environmental variation and change.
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Affiliation(s)
- Jane M Reid
- Centre for Biodiversity Dynamics, Institutt for Biologi, NTNU, Trondheim, 7034, Norway.,School of Biological Sciences, University of Aberdeen, Aberdeen, AB24 2TZ, United Kingdom
| | - Paul Acker
- Centre for Biodiversity Dynamics, Institutt for Biologi, NTNU, Trondheim, 7034, Norway
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19
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Koch IJ, Narum SR. An evaluation of the potential factors affecting lifetime reproductive success in salmonids. Evol Appl 2021; 14:1929-1957. [PMID: 34429740 PMCID: PMC8372082 DOI: 10.1111/eva.13263] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 06/03/2021] [Accepted: 06/06/2021] [Indexed: 01/24/2023] Open
Abstract
Lifetime reproductive success (LRS), the number of offspring produced over an organism's lifetime, is a fundamental component of Darwinian fitness. For taxa such as salmonids with multiple species of conservation concern, understanding the factors affecting LRS is critical for the development and implementation of successful conservation management practices. Here, we reviewed the published literature to synthesize factors affecting LRS in salmonids including significant effects of hatchery rearing, life history, and phenotypic variation, and behavioral and spawning interactions. Additionally, we found that LRS is affected by competitive behavior on the spawning grounds, genetic compatibility, local adaptation, and hybridization. Our review of existing literature revealed limitations of LRS studies, and we emphasize the following areas that warrant further attention in future research: (1) expanding the range of studies assessing LRS across different life-history strategies, specifically accounting for distinct reproductive and migratory phenotypes; (2) broadening the variety of species represented in salmonid fitness studies; (3) constructing multigenerational pedigrees to track long-term fitness effects; (4) conducting LRS studies that investigate the effects of aquatic stressors, such as anthropogenic effects, pathogens, environmental factors in both freshwater and marine environments, and assessing overall body condition, and (5) utilizing appropriate statistical approaches to determine the factors that explain the greatest variation in fitness and providing information regarding biological significance, power limitations, and potential sources of error in salmonid parentage studies. Overall, this review emphasizes that studies of LRS have profoundly advanced scientific understanding of salmonid fitness, but substantial challenges need to be overcome to assist with long-term recovery of these keystone species in aquatic ecosystems.
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Affiliation(s)
- Ilana J. Koch
- Columbia River Inter‐Tribal Fish CommissionHagermanIDUSA
| | - Shawn R. Narum
- Columbia River Inter‐Tribal Fish CommissionHagermanIDUSA
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20
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Markevich GN, Zlenko DV, Shkil FN, Schliewen UK, Anisimova LA, Sharapkova AA, Esin EV. Natural Barriers and Internal Sources for the Reproductive Isolation in Sympatric Salmonids from the Lake–River System. Evol Biol 2021. [DOI: 10.1007/s11692-021-09546-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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21
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Hale MC, McLaughlin R, Wilson C, Mackereth R, Nichols KM. Differential gene expression associated with behavioral variation in ecotypes of Lake Superior brook trout (Salvelinus fontinalis). COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY D-GENOMICS & PROTEOMICS 2021; 40:100884. [PMID: 34303261 DOI: 10.1016/j.cbd.2021.100884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 06/06/2021] [Accepted: 07/10/2021] [Indexed: 11/17/2022]
Abstract
Associations between behaviors and the development of different life history tactics have been documented in several species of salmon, trout, and charr. While it is well known that such behaviors are heritable the genes and molecular pathways connected to these behaviors remain unknown. We used an RNA-seq approach to identify genes and molecular pathways differentially regulated in brain tissue between "shy" and "bold" brook trout (Salvelinus fontinalis). A small number of genes were differentially expressed between the behavioral types at several months after hatching and two years of age. Pathway analysis revealed that EIF2 signaling differed consistently between shy and bold individuals suggesting large-scale differences in protein synthesis between behavioral types in the brain. Additionally, the RNA-seq data were used to find polymorphisms within the brook trout genome and a GWAS approach was used to test for statistical associations between genetic variants and behavior type. One allele located in a transcription factor (TSHZ3) contained a protein-coding non-synonymous SNP suggesting that functional variation within TSHZ3 is connected to the development of different behaviors. These results suggest that the molecular basis of behavioral development is complex and due to the differential expression of many genes involved in a wide-range of different molecular pathways.
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Affiliation(s)
- Matthew C Hale
- Department of Biology, Texas Christian University, Fort Worth, TX 76129, United States of America.
| | - Robert McLaughlin
- Department of Integrative Biology, University of Guelph, Guelph, ON N1G2W1, Canada
| | - Chris Wilson
- Aquatic Biodiversity and Conservation Unit, Ontario Ministry of Natural Resources, Trent University, Peterborough, ON K9J 7B8, Canada
| | - Robert Mackereth
- Department of Biology, Lakehead University, Thunder Bay, ON P7B 5E1, Canada
| | - Krista M Nichols
- Conservation Biology Division, Northwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Seattle, WA 98112, United States of America
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22
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Duval E, Skaala Ø, Quintela M, Dahle G, Delaval A, Wennevik V, Glover KA, Hansen MM. Long-term monitoring of a brown trout (Salmo trutta) population reveals kin-associated migration patterns and contributions by resident trout to the anadromous run. BMC Ecol Evol 2021; 21:143. [PMID: 34256705 PMCID: PMC8276402 DOI: 10.1186/s12862-021-01876-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 07/02/2021] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND In species showing partial migration, as is the case for many salmonid fishes, it is important to assess how anthropogenic pressure experienced by migrating individuals affects the total population. We focused on brown trout (Salmo trutta) from the Guddal River in the Norwegian Hardanger Fjord system, which encompasses both resident and anadromous individuals. Aquaculture has led to increased anthropogenic pressure on brown trout during the marine phase in this region. Fish traps in the Guddal River allow for sampling all ascending anadromous spawners and descending smolts. We analyzed microsatellite DNA markers from all individuals ascending in 2006-2016, along with all emigrating smolts in 2017. We investigated (1) if there was evidence for declines in census numbers and effective population size during that period, (2) if there was association between kinship and migration timing in smolts and anadromous adults, and (3) to what extent resident trout were parents of outmigrating smolts. RESULTS Census counts of anadromous spawners showed no evidence for a decline from 2006 to 2016, but were lower than in 2000-2005. Estimates of effective population size also showed no trends of declines during the study period. Sibship reconstruction of the 2017 smolt run showed significant association between kinship and migration timing, and a similar association was indicated in anadromous spawners. Parentage assignment of 2017 smolts with ascending anadromous trout as candidate parents, and assuming that unknown parents represented resident trout, showed that 70% of smolts had at least one resident parent and 24% had two resident parents. CONCLUSIONS The results bear evidence of a population that after an initial decline has stabilized at a lower number of anadromous spawners. The significant association between kinship and migration timing in smolts suggests that specific episodes of elevated mortality in the sea could disproportionally affect some families and reduce overall effective population size. Finally, the results based on parentage assignment demonstrate a strong buffering effect of resident trout in case of elevated marine mortality affecting anadromous trout, but also highlight that increased mortality of anadromous trout, most of which are females, may lower overall production in the system.
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Affiliation(s)
- Eloïse Duval
- Department of Biology, Aarhus University, Ny Munkegade 114, 8000, Aarhus C, Denmark.
- Theoretical and Experimental Ecology Station, UMR-5321, CNRS, University of Toulouse III Paul Sabatier, 2 route du CNRS, 09200, Moulis, France.
| | - Øystein Skaala
- Department of Aquaculture, Institute of Marine Research, Nordnes, P.O. Box 1870, 5817, Bergen, Norway.
| | - María Quintela
- Department of Aquaculture, Institute of Marine Research, Nordnes, P.O. Box 1870, 5817, Bergen, Norway
| | - Geir Dahle
- Department of Aquaculture, Institute of Marine Research, Nordnes, P.O. Box 1870, 5817, Bergen, Norway
| | - Aurélien Delaval
- Department of Aquaculture, Institute of Marine Research, Nordnes, P.O. Box 1870, 5817, Bergen, Norway
- Faculty of Biosciences and Aquaculture, Nord University, 8049, Bodø, Norway
| | - Vidar Wennevik
- Department of Aquaculture, Institute of Marine Research, Nordnes, P.O. Box 1870, 5817, Bergen, Norway
| | - Kevin A Glover
- Department of Aquaculture, Institute of Marine Research, Nordnes, P.O. Box 1870, 5817, Bergen, Norway
- Institute of Biology, University of Bergen, Bergen, Norway
| | - Michael M Hansen
- Department of Biology, Aarhus University, Ny Munkegade 114, 8000, Aarhus C, Denmark.
- Department of Aquaculture, Institute of Marine Research, Nordnes, P.O. Box 1870, 5817, Bergen, Norway.
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23
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Barrow JS, Yen JDL, Koehn JD, Zampatti BP, Thiem JD, Tonkin Z, Strawbridge A, Morrongiello JR. Lifetime movement history is associated with variable growth of a potamodromous freshwater fish. J Anim Ecol 2021; 90:2560-2572. [PMID: 34160071 DOI: 10.1111/1365-2656.13561] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 05/03/2021] [Indexed: 11/26/2022]
Abstract
Directional or stabilising selection should drive the expression of a dominant movement phenotype within a population. Widespread persistence of multiple movement phenotypes within wild populations, however, suggests that individuals that move (movers) and those that do not (residents) can have commensurate performance. The costs and benefits of mover and resident phenotypes remain poorly understood. Here, we explored how the presence and timing of movements are correlated with annual somatic growth rates, a useful proxy for performance because it is easily measured and rapidly reflects environmental changes. We used otolith growth measurements and stable isotope analyses to recreate growth and among-reach movement histories of a partially migrating, long-lived freshwater fish, golden perch Macquaria ambigua. We compared the association between movement and growth at two temporal scales: (a) short-term (annual) differences in growth, in the years preceding, during or following movement; and (b) long-term (lifetime) differences in growth. Overall, 59% of individuals performed at least one among-reach movement, with these individuals subsequently more likely to move repeatedly throughout their lives. Movers grew faster than residents, with this difference most pronounced in the juvenile and early adult stages, when most movements occurred. Annual growth did not, however, change immediately prior to or following a specific movement event. Among-individual variation in growth was initially higher for residents than for movers but decreased with age, at a faster rate for residents than for movers, such that levels conformed after 5 years of age. Our results indicate that lifetime movement is linked to faster growth in the early years of a fish's life. These faster growing movers are likely to be larger at a given age, leading to numerous potential benefits. However, the persistence of resident phenotypes suggests that there is likely a cost-benefit trade-off to moving. The presence of multiple movement phenotypes may contribute to the resilience of populations by buffering against naturally and anthropogenically exacerbated environmental variability.
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Affiliation(s)
- Joshua S Barrow
- School of BioSciences, University of Melbourne, Parkville, Vic., Australia
| | - Jian D L Yen
- School of BioSciences, University of Melbourne, Parkville, Vic., Australia.,Department of Environment, Land, Water and Planning, Applied Aquatic Ecology, Arthur Rylah Institute for Environmental Research, Heidelberg, Vic., Australia
| | - John D Koehn
- Department of Environment, Land, Water and Planning, Applied Aquatic Ecology, Arthur Rylah Institute for Environmental Research, Heidelberg, Vic., Australia
| | - Brenton P Zampatti
- Commonwealth Scientific and Industrial Research Organisation (CSIRO), Glen Osmond, SA, Australia.,Inland Waters and Catchment Ecology Program, SARDI Aquatic Sciences, SA, Australia
| | - Jason D Thiem
- Department of Primary Industries, Narrandera Fisheries Centre, Narrandera, NSW, Australia
| | - Zeb Tonkin
- Department of Environment, Land, Water and Planning, Applied Aquatic Ecology, Arthur Rylah Institute for Environmental Research, Heidelberg, Vic., Australia
| | - Arron Strawbridge
- Inland Waters and Catchment Ecology Program, SARDI Aquatic Sciences, SA, Australia
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24
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Wynne R, Archer LC, Hutton SA, Harman L, Gargan P, Moran PA, Dillane E, Coughlan J, Cross TF, McGinnity P, Colgan TJ, Reed TE. Alternative migratory tactics in brown trout ( Salmo trutta) are underpinned by divergent regulation of metabolic but not neurological genes. Ecol Evol 2021; 11:8347-8362. [PMID: 34188891 PMCID: PMC8216917 DOI: 10.1002/ece3.7664] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 04/15/2021] [Accepted: 04/18/2021] [Indexed: 12/03/2022] Open
Abstract
The occurrence of alternative morphs within populations is common, but the underlying molecular mechanisms remain poorly understood. Many animals, for example, exhibit facultative migration, where two or more alternative migratory tactics (AMTs) coexist within populations. In certain salmonid species, some individuals remain in natal rivers all their lives, while others (in particular, females) migrate to sea for a period of marine growth. Here, we performed transcriptional profiling ("RNA-seq") of the brain and liver of male and female brown trout to understand the genes and processes that differentiate between migratory and residency morphs (AMT-associated genes) and how they may differ in expression between the sexes. We found tissue-specific differences with a greater number of genes expressed differentially in the liver (n = 867 genes) compared with the brain (n = 10) between the morphs. Genes with increased expression in resident livers were enriched for Gene Ontology terms associated with metabolic processes, highlighting key molecular-genetic pathways underlying the energetic requirements associated with divergent migratory tactics. In contrast, smolt-biased genes were enriched for biological processes such as response to cytokines, suggestive of possible immune function differences between smolts and residents. Finally, we identified evidence of sex-biased gene expression for AMT-associated genes in the liver (n = 12) but not the brain. Collectively, our results provide insights into tissue-specific gene expression underlying the production of alternative life histories within and between the sexes, and point toward a key role for metabolic processes in the liver in mediating divergent physiological trajectories of migrants versus residents.
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Affiliation(s)
- Robert Wynne
- School of Biological, Earth and Environmental SciencesUniversity College CorkCorkIreland
- Environmental Research InstituteUniversity College CorkCorkIreland
| | - Louise C. Archer
- School of Biological, Earth and Environmental SciencesUniversity College CorkCorkIreland
- Environmental Research InstituteUniversity College CorkCorkIreland
| | - Stephen A. Hutton
- School of Biological, Earth and Environmental SciencesUniversity College CorkCorkIreland
- Environmental Research InstituteUniversity College CorkCorkIreland
| | - Luke Harman
- School of Biological, Earth and Environmental SciencesUniversity College CorkCorkIreland
- Environmental Research InstituteUniversity College CorkCorkIreland
| | | | - Peter A. Moran
- School of Biological, Earth and Environmental SciencesUniversity College CorkCorkIreland
- Environmental Research InstituteUniversity College CorkCorkIreland
- Present address:
Department of Ecological Science – Animal EcologyVrije Universiteit AmsterdamAmsterdamThe Netherlands
| | - Eileen Dillane
- School of Biological, Earth and Environmental SciencesUniversity College CorkCorkIreland
- Environmental Research InstituteUniversity College CorkCorkIreland
| | - Jamie Coughlan
- School of Biological, Earth and Environmental SciencesUniversity College CorkCorkIreland
- Environmental Research InstituteUniversity College CorkCorkIreland
| | - Thomas F. Cross
- School of Biological, Earth and Environmental SciencesUniversity College CorkCorkIreland
- Environmental Research InstituteUniversity College CorkCorkIreland
| | - Philip McGinnity
- School of Biological, Earth and Environmental SciencesUniversity College CorkCorkIreland
- Environmental Research InstituteUniversity College CorkCorkIreland
- Marine InstituteNewportIreland
| | - Thomas J. Colgan
- School of Biological, Earth and Environmental SciencesUniversity College CorkCorkIreland
- Environmental Research InstituteUniversity College CorkCorkIreland
- Present address:
Institute of Organismic and Molecular EvolutionJohannes Gutenberg University MainzMainzGermany
| | - Thomas E. Reed
- School of Biological, Earth and Environmental SciencesUniversity College CorkCorkIreland
- Environmental Research InstituteUniversity College CorkCorkIreland
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25
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Birnie-Gauvin K, Bordeleau X, Cooke SJ, Davidsen JG, Eldøy SH, Eliason EJ, Moore A, Aarestrup K. Life-history strategies in salmonids: the role of physiology and its consequences. Biol Rev Camb Philos Soc 2021; 96:2304-2320. [PMID: 34043292 DOI: 10.1111/brv.12753] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 05/14/2021] [Accepted: 05/18/2021] [Indexed: 01/02/2023]
Abstract
Salmonids are some of the most widely studied species of fish worldwide. They span freshwater rivers and lakes to fjords and oceans; they include short- and long-distance anadromous migrants, as well as partially migratory and non-migratory populations; and exhibit both semelparous and iteroparous reproduction. Salmonid life-history strategies represent some of the most diverse on the planet. For this reason, salmonids provide an especially interesting model to study the drivers of these different life-history pathways. Over the past few decades, numerous studies and reviews have been published, although most have focused on ultimate considerations where expected reproductive success of different developmental or life-history strategies are compared. Those that considered proximate causes generally focused on genetics or the environment, with less consideration of physiology. Our objective was therefore to review the existing literature on the role of physiology as a proximate driver for life-history strategies in salmonids. This link is necessary to explore since physiology is at the core of biological processes influencing energy acquisition and allocation. Energy acquisition and allocation processes, in turn, can affect life histories. We find that life-history strategies are driven by a range of physiological processes, ranging from metabolism and nutritional status to endocrinology. Our review revealed that the role of these physiological processes can vary across species and individuals depending on the life-history decision(s) to be made. In addition, while findings sometimes vary by species, results appear to be consistent in species with similar life cycles. We conclude that despite much work having been conducted on the topic, the study of physiology and its role in determining life-history strategies in salmonids remains somewhat unexplored, particularly for char and trout (excluding brown trout) species. Understanding these mechanistic links is necessary if we are to understand adequately how changing environments will impact salmonid populations.
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Affiliation(s)
- Kim Birnie-Gauvin
- Section for Freshwater Fisheries and Ecology, National Institute of Aquatic Resources, Technical University of Denmark, Vejlsøvej 39, Silkeborg, 8600, Denmark
| | - Xavier Bordeleau
- Department of Fisheries and Oceans Canada, Maurice Lamontagne Institute, 850 route de la Mer, Mont-Joli, QC, G5H 3Z4, Canada
| | - Steven J Cooke
- Department of Biology & Institute of Environmental and Interdisciplinary Sciences, Carleton University, 1125 Colonel By Dr., Ottawa, ON, K1S 5B6, Canada
| | - Jan G Davidsen
- NTNU University Museum, Norwegian University of Science and Technology, Høgskoleringen 1, Trondheim, 7491, Norway
| | - Sindre H Eldøy
- NTNU University Museum, Norwegian University of Science and Technology, Høgskoleringen 1, Trondheim, 7491, Norway
| | - Erika J Eliason
- Department of Ecology, Evolution and Marine Biology, University of California Santa Barbara, California, UCSB Marine Science Institute, Building 520, Santa Barbara, CA, 93106-6150, U.S.A
| | - Andy Moore
- Centre for Environment, Fisheries and Aquaculture Science, Pakefield Road, Lowestoft, Suffolk, NR33 0HT, U.K
| | - Kim Aarestrup
- Section for Freshwater Fisheries and Ecology, National Institute of Aquatic Resources, Technical University of Denmark, Vejlsøvej 39, Silkeborg, 8600, Denmark
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26
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Gerson M, Dierking J, Marohn L, Thiel R, Klügel A, Sarrazin V. Partial migration of a maraena whitefish Coregonus maraena population from the River Elbe, Germany. ENDANGER SPECIES RES 2021. [DOI: 10.3354/esr01102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The maraena whitefish Coregonus maraena is a threatened anadromous species in the North Sea, which in the past was decimated to near extinction. Since the late 1980s, several re-establishment programs have been implemented in rivers draining into the North Sea, but the scientific basis for sustainable conservation measures is often lacking, since little is known about the biology of this species. In this study, otolith microchemistry of fish ranging from 24.6 to 58.4 cm in total length (median 31.3 cm, SD 8.4 cm) was used to characterize the migration behavior of a reintroduced population of maraena whitefish from the River Elbe, Germany. Our analyses revealed the presence of 3 different migration patterns: (1) one-time migration into high-salinity habitat (North Sea) within the first year of life (29.6%), (2) multiple migrations between low- and high-salinity habitats starting in the first year of life (14.8%) and (3) permanent residency within low-salinity habitats, a pattern displayed by the majority (55.6%) of sampled individuals. Not only do these results reveal differential migration behavior, but they also indicate that permanent river residency is common in the River Elbe population of C. maraena. The role of the Elbe as both a feeding and a spawning habitat should thus be considered more explicitly in current conservation measures to support recovery of this species.
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Affiliation(s)
- M Gerson
- Private address: 53111 Bonn, Germany
| | - J Dierking
- Research Division Marine Ecology, GEOMAR Helmholtz Centre for Ocean Research Kiel, 24105 Kiel, Germany
| | - L Marohn
- Thünen Institute of Fisheries Ecology, 27572 Bremerhaven, Germany
| | - R Thiel
- Center of Natural History (CeNak), University of Hamburg, 20146 Hamburg, Germany
| | - A Klügel
- Department of Geosciences, University of Bremen, 28359 Bremen, Germany
| | - V Sarrazin
- Center of Natural History (CeNak), University of Hamburg, 20146 Hamburg, Germany
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27
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Rauber RG, Strictar L, Gomes LC, Suzuki HI, Agostinho AA. Spatial segregation in the reproductive activity of Neotropical fish species as an indicator of the migratory trait. JOURNAL OF FISH BIOLOGY 2021; 98:694-706. [PMID: 33188525 DOI: 10.1111/jfb.14614] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 11/07/2020] [Accepted: 11/11/2020] [Indexed: 06/11/2023]
Abstract
This study focused on the distribution of fish with high reproductive activity along a basin, using a 430 km stretch of the Cuiabá River in Brazil as a model. The main objective of this study was to identify those fish that migrate long distances for reproduction, among all the basin species. Thus, a set of working criteria are proposed to classify species according to their reproductive behaviour (i.e., reproductive activity and distribution). Samplings were performed in the Cuiabá River basin, encompassing several environments (river, channels and lakes) during the reproductive periods (between October and February), from 2000 to 2004. Species occurrence (presence and absence - proxy of distribution) across the basin and index of reproductive activity values were used as criteria to identify the species that perform long-distance longitudinal migrations for reproduction. The study confirmed the classification of long-distance longitudinal migration species; nonetheless, some species were not classified as described in the literature. The proposed sequential criteria have proven to be effective in the classification of long-distance longitudinal migrations species and certainly contribute to filling some existing knowledge gaps of reproductive traits. This classification is of fundamental importance in planning new dam projects, in decision making and in the development of management and conservation actions for the ichthyofauna.
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Affiliation(s)
- Rafaela G Rauber
- Pós-Graduação em Ecologia de Ambientes Aquáticos Continentais, Departamento de Biologia, Universidade Estadual de Maringá, Maringá, Brazil
| | - Larissa Strictar
- Capes - Foundation, Ministry of Education of Brazil, Brasília, Brazil
| | - Luiz C Gomes
- Pós-Graduação em Ecologia de Ambientes Aquáticos Continentais, Departamento de Biologia, Universidade Estadual de Maringá, Maringá, Brazil
- Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (Nupélia), Universidade Estadual de Maringá, Maringá, Brazil
| | - Harumi I Suzuki
- Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (Nupélia), Universidade Estadual de Maringá, Maringá, Brazil
| | - Angelo A Agostinho
- Pós-Graduação em Ecologia de Ambientes Aquáticos Continentais, Departamento de Biologia, Universidade Estadual de Maringá, Maringá, Brazil
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28
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Colgan TJ, Moran PA, Archer LC, Wynne R, Hutton SA, McGinnity P, Reed TE. Evolution and Expression of the Immune System of a Facultatively Anadromous Salmonid. Front Immunol 2021; 12:568729. [PMID: 33717060 PMCID: PMC7952528 DOI: 10.3389/fimmu.2021.568729] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 01/07/2021] [Indexed: 12/24/2022] Open
Abstract
Vertebrates have evolved a complex immune system required for the identification of and coordinated response to harmful pathogens. Migratory species spend periods of their life-cycle in more than one environment, and their immune system consequently faces a greater diversity of pathogens residing in different environments. In facultatively anadromous salmonids, individuals may spend parts of their life-cycle in freshwater and marine environments. For species such as the brown trout Salmo trutta, sexes differ in their life-histories with females more likely to migrate to sea while males are more likely to stay and complete their life-cycle in their natal river. Salmonids have also undergone a lineage-specific whole genome duplication event, which may provide novel immune innovations but our current understanding of the differences in salmonid immune expression between the sexes is limited. We characterized the brown trout immune gene repertoire, identifying a number of canonical immune genes in non-salmonid teleosts to be duplicated in S. trutta, with genes involved in innate and adaptive immunity. Through genome-wide transcriptional profiling (“RNA-seq”) of male and female livers to investigate sex differences in gene expression amplitude and alternative splicing, we identified immune genes as being generally male-biased in expression. Our study provides important insights into the evolutionary consequences of whole genome duplication events on the salmonid immune gene repertoire and how the sexes differ in constitutive immune expression.
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Affiliation(s)
- Thomas J Colgan
- School of Biological, Earth and Environmental Sciences, University College Cork, Cork, Ireland
| | - Peter A Moran
- School of Biological, Earth and Environmental Sciences, University College Cork, Cork, Ireland.,Environmental Research Institute, University College Cork, Cork, Ireland
| | - Louise C Archer
- School of Biological, Earth and Environmental Sciences, University College Cork, Cork, Ireland.,Environmental Research Institute, University College Cork, Cork, Ireland
| | - Robert Wynne
- School of Biological, Earth and Environmental Sciences, University College Cork, Cork, Ireland.,Environmental Research Institute, University College Cork, Cork, Ireland
| | - Stephen A Hutton
- School of Biological, Earth and Environmental Sciences, University College Cork, Cork, Ireland.,Environmental Research Institute, University College Cork, Cork, Ireland
| | - Philip McGinnity
- School of Biological, Earth and Environmental Sciences, University College Cork, Cork, Ireland.,Marine Institute, Newport, Ireland
| | - Thomas E Reed
- School of Biological, Earth and Environmental Sciences, University College Cork, Cork, Ireland.,Environmental Research Institute, University College Cork, Cork, Ireland
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29
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Horita J, Iwasa Y, Tachiki Y. Eco-evolutionary dynamics may show an irreversible regime shift, illustrated by salmonids facing climate change. THEOR ECOL-NETH 2021. [DOI: 10.1007/s12080-021-00502-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
AbstractThe enhanced or reduced growth of juvenile masu salmon (Oncorhynchus masou masou) may result from climate changes to their environment and thus impact on the eco-evolutionary dynamics of their life-history choices. Male juveniles with status, i.e., if their body size is larger than a threshold, stay in the stream and become resident males reproducing for multiple years, while those with smaller status, i.e., their body size is below the threshold, migrate to the ocean and return to the stream one year later to reproduce only once. Since juvenile growth is suppressed by the density of resident males, the fraction of resident males may stay in equilibrium or fluctuate wildly over a 2-year period. When the threshold value evolves, the convergence stable strategy may generate either an equilibrium or large fluctuations of male residents. If environmental changes occur faster than the rate of evolutionary adaptation, the eco-evolutionary dynamics exhibit a qualitative shift in the population dynamics. We also investigated the relative assessment models, in which individual life-history choices are made based on the individual’s relative status within the juvenile population. The eco-evolutionary dynamics are very different from the absolute assessment model, demonstrating the importance of understanding the mechanisms of life history choices when predicting the impacts of climate change.
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30
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Rougemont Q, Dolo V, Oger A, Besnard AL, Huteau D, Coutellec MA, Perrier C, Launey S, Evanno G. Riverscape genetics in brook lamprey: genetic diversity is less influenced by river fragmentation than by gene flow with the anadromous ecotype. Heredity (Edinb) 2021; 126:235-250. [PMID: 32989279 PMCID: PMC8027852 DOI: 10.1038/s41437-020-00367-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Revised: 08/28/2020] [Accepted: 09/01/2020] [Indexed: 01/05/2023] Open
Abstract
Understanding the effect of human-induced landscape fragmentation on gene flow and evolutionary potential of wild populations has become a major concern. Here, we investigated the effect of riverscape fragmentation on patterns of genetic diversity in the freshwater resident European brook lamprey (Lampetra planeri) that has a low ability to pass obstacles to migration. We tested the hypotheses of (i) asymmetric gene flow following water current and (ii) an effect of gene flow with the closely related anadromous river lamprey (L. fluviatilis) ecotype on L. planeri genetic diversity. We genotyped 2472 individuals, including 225 L. fluviatilis, sampled from 81 sites upstream and downstream barriers to migration, in 29 western European rivers. Linear modelling revealed a strong positive relationship between genetic diversity and the distance from the river source, consistent with expected patterns of decreased gene flow into upstream populations. However, the presence of anthropogenic barriers had a moderate effect on spatial genetic structure. Accordingly, we found evidence for downstream-directed gene flow, supporting the hypothesis that barriers do not limit dispersal mediated by water flow. Downstream L. planeri populations in sympatry with L. fluviatilis displayed consistently higher genetic diversity. We conclude that genetic drift and slight downstream gene flow drive the genetic make-up of upstream L. planeri populations whereas gene flow between ecotypes maintains higher levels of genetic diversity in L. planeri populations sympatric with L. fluviatilis. We discuss the implications of these results for the design of conservation strategies of lamprey, and other freshwater organisms with several ecotypes, in fragmented dendritic river networks.
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Affiliation(s)
- Quentin Rougemont
- ESE, Ecology and Ecosystem Health, INRAE, Agrocampus Ouest, 35042, Rennes, France.
- Département de biologie, Institut de Biologie Intégrative etsu des Systèmes (IBIS), Université Laval, Québec, G1V 0A6, Canada.
| | - Victoria Dolo
- ESE, Ecology and Ecosystem Health, INRAE, Agrocampus Ouest, 35042, Rennes, France
| | - Adrien Oger
- ESE, Ecology and Ecosystem Health, INRAE, Agrocampus Ouest, 35042, Rennes, France
| | - Anne-Laure Besnard
- ESE, Ecology and Ecosystem Health, INRAE, Agrocampus Ouest, 35042, Rennes, France
| | - Dominique Huteau
- ESE, Ecology and Ecosystem Health, INRAE, Agrocampus Ouest, 35042, Rennes, France
| | | | - Charles Perrier
- Centre de Biologie pour la Gestion des Populations UMR CBGP, INRA, CIRAD, IRD, Montpellier SupAgro, Univ Montpellier, Montpellier, France
| | - Sophie Launey
- ESE, Ecology and Ecosystem Health, INRAE, Agrocampus Ouest, 35042, Rennes, France
| | - Guillaume Evanno
- ESE, Ecology and Ecosystem Health, INRAE, Agrocampus Ouest, 35042, Rennes, France
- OFB, INRAE, Agrocampus Ouest, University Pau Pays Adour, Management of Diadromous Fish in their Environment, Rennes, France
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31
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Quinn TP. Differential migration in Pacific salmon and trout: Patterns and hypotheses. ANIMAL MIGRATION 2021. [DOI: 10.1515/ami-2021-0001] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Migrations affect the population dynamics, life history, evolution, and connections of animals to natural ecosystems and humans. Many species and populations display partial migration (some individuals migrate and some do not), and differential migration (migration distance varies). Partial migration is widely distributed in fishes but the term differential migration is much less commonly applied, despite the occurrence of this phenomenon. This paper briefly reviews the extent of differential migration in Pacific salmon and trout (genus Oncorhynchus), a very extensively studied group. Three hypotheses are presented to explain the patterns among species: 1) phylogenetic relationships, 2) the prevalence of partial migration (i.e., variation in anadromy), and 3) life history patterns (iteroparous or semelparous, and duration spent feeding at sea prior to maturation). Each hypothesis has some support but none is consistent with all patterns. The prevalence of differential migration, ranging from essentially non-existent to common within a species, reflects phylogeny and life history, interacting with the geographic features of the region where juvenile salmon enter the ocean. Notwithstanding the uncertain evolution of this behavior, it has very clear implications for salmon conservation, as it strongly affects exposure to predators, patterns of fishery exploitation and also uptake of toxic contaminants.
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Affiliation(s)
- Thomas P. Quinn
- School of Aquatic and Fishery Sciences , University of Washington , Seattle , WA 98195, USA
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32
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The Impacts of Dam Construction and Removal on the Genetics of Recovering Steelhead ( Oncorhynchus mykiss) Populations across the Elwha River Watershed. Genes (Basel) 2021; 12:genes12010089. [PMID: 33450806 PMCID: PMC7828262 DOI: 10.3390/genes12010089] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 01/04/2021] [Accepted: 01/07/2021] [Indexed: 11/25/2022] Open
Abstract
Dam construction and longitudinal river habitat fragmentation disrupt important life histories and movement of aquatic species. This is especially true for Oncorhynchus mykiss that exhibits both migratory (steelhead) and non-migratory (resident rainbow) forms. While the negative effects of dams on salmonids have been extensively documented, few studies have had the opportunity to compare population genetic diversity and structure prior to and following dam removal. Here we examine the impacts of the removal of two dams on the Elwha River on the population genetics of O. mykiss. Genetic data were produced from >1200 samples collected prior to dam removal from both life history forms, and post-dam removal from steelhead. We identified three genetic clusters prior to dam removal primarily explained by isolation due to dams and natural barriers. Following dam removal, genetic structure decreased and admixture increased. Despite large O. mykiss population declines after dam construction, we did not detect shifts in population genetic diversity or allele frequencies of loci putatively involved in migratory phenotypic variation. Steelhead descendants from formerly below and above dammed populations recolonized the river rapidly after dam removal, suggesting that dam construction did not significantly reduce genetic diversity underlying O. mykiss life history strategies. These results have significant evolutionary implications for the conservation of migratory adaptive potential in O. mykiss populations above current anthropogenic barriers.
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33
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Tanaka T, Ueda R, Sato T. Captive-bred populations of a partially migratory salmonid fish are unlikely to maintain migratory polymorphism in natural habitats. Biol Lett 2021; 17:20200324. [PMID: 33435849 DOI: 10.1098/rsbl.2020.0324] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Variation in life history is fundamental to the long-term persistence of populations and species. Partial migration, in which both migratory and resident individuals are maintained in a population, is commonly found across animal taxa. However, human-induced habitat fragmentation continues to cause a rapid decline in the migratory phenotype in many natural populations. Using field and hatchery experiments, we demonstrated that despite both migrants and residents being maintained in captive environments, few individuals of the red-spotted masu salmon, Oncorhynchus masou ishikawae, became migrants in natural streams when released prior to the migration decision. Released fish rarely reached the threshold body size necessary to become migrants in natural streams, presumably owing to lower growth rates in natural than in captive environments. The decision to migrate is often considered a threshold trait in salmonids and other animal taxa. Our findings highlight the need for management programmes that acknowledge the effects of the environment on the determination of the migratory phenotypes of partially migratory species when releasing captive-bred individuals prior to their migratory decisions.
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Affiliation(s)
- Tatsuya Tanaka
- Department of Biology, Graduate School of Sciences, Kobe University, 1-1 Rokkodai, Nada-ku, Kobe 657-8501, Japan
| | - Rui Ueda
- Department of Biology, Graduate School of Sciences, Kobe University, 1-1 Rokkodai, Nada-ku, Kobe 657-8501, Japan
| | - Takuya Sato
- Department of Biology, Graduate School of Sciences, Kobe University, 1-1 Rokkodai, Nada-ku, Kobe 657-8501, Japan
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34
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Effect of parental phenotype on dispersal, growth and maturation of offspring in wild masu salmon (Oncorhynchus masou). Evol Ecol 2021. [DOI: 10.1007/s10682-020-10098-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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35
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Abstract
Diadromy, the predictable movements of individuals between marine and freshwater environments, is biogeographically and phylogenetically widespread across fishes. Thus, despite the high energetic and potential fitness costs involved in moving between distinct environments, diadromy appears to be an effective life history strategy. Yet, the origin and molecular mechanisms that underpin this migratory behavior are not fully understood. In this review, we aim first to summarize what is known about diadromy in fishes; this includes the phylogenetic relationship among diadromous species, a description of the main hypotheses regarding its origin, and a discussion of the presence of non-migratory populations within diadromous species. Second, we discuss how recent research based on -omics approaches (chiefly genomics, transcriptomics, and epigenomics) is beginning to provide answers to questions on the genetic bases and origin(s) of diadromy. Finally, we suggest future directions for -omics research that can help tackle questions on the evolution of diadromy.
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Affiliation(s)
- M. Lisette Delgado
- Department of Biology, Dalhousie University, Halifax, Nova Scotia, B3H 4R2, Canada
| | - Daniel E. Ruzzante
- Department of Biology, Dalhousie University, Halifax, Nova Scotia, B3H 4R2, Canada
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36
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Zueva KJ, Lumme J, Veselov AE, Primmer CR, Pritchard VL. Population genomics reveals repeated signals of adaptive divergence in the Atlantic salmon of north‐eastern Europe. J Evol Biol 2020; 34:866-878. [DOI: 10.1111/jeb.13732] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 10/09/2020] [Accepted: 10/12/2020] [Indexed: 02/06/2023]
Affiliation(s)
| | - Jaakko Lumme
- Department of Biology University of Oulu Oulu Finland
| | | | - Craig R. Primmer
- Organismal and Evolutionary Biology Research Programme University of Helsinki Helsinki Finland
- Institute of Biotechnology University of Helsinki Helsinki Finland
| | - Victoria L. Pritchard
- Organismal and Evolutionary Biology Research Programme University of Helsinki Helsinki Finland
- Rivers and Lochs Institute Inverness College University of Highlands and Islands Inverness UK
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37
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Horita J, Iwasa Y, Tachiki Y. Positive Feedback between Behavioral and Hormonal Dynamics Leads to Differentiation of Life-History Tactics. Am Nat 2020; 196:679-689. [PMID: 33211570 DOI: 10.1086/711414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
AbstractCompetitive interaction among individuals of a single population may result in the differentiation of two or more distinct life-history tactics. For example, although they exhibit unimodal size distribution, male juveniles of salmonids differentiate into those going down to the ocean to grow and returning to the natal stream after several years to reproduce (migratory tactic) and those staying in the stream and reproducing for multiple years (resident tactic). In this study, we developed a simple mathematical model for the positive feedback between hormonal and behavioral dynamics, with the expectation of establishing multiple discrete clusters of hormone levels leading to differentiation of life-history tactics. The assumptions were that probability of winning in fighting depends both on the body size and hormone level of the two contestants. An individual with a higher hormone level would be more likely to win the competition, which further enhanced hormone production, forming a positive feedback loop between hormone level and fighting ability. If the positive feedback was strong but not excessive, discrete clusters of hormone levels emerged from a continuous distribution. In contrast, no clear clustering structure appeared in the distribution of hormone levels if the probability of winning in fighting was controlled by the body size.
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38
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Pärssinen V, Hulthén K, Brönmark C, Skov C, Brodersen J, Baktoft H, Chapman BB, Hansson LA, Nilsson PA. Maladaptive migration behaviour in hybrids links to predator-mediated ecological selection. J Anim Ecol 2020; 89:2596-2604. [PMID: 32745243 PMCID: PMC7692921 DOI: 10.1111/1365-2656.13308] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 06/24/2020] [Indexed: 12/22/2022]
Abstract
Different migratory species have evolved distinct migratory characteristics that improve fitness in their particular ecological niches. However, when such species hybridize, migratory traits from parental species can combine maladaptively and cause hybrids to fall between parental fitness peaks, with potential consequences for hybrid viability and species integrity. Here, we take advantage of a natural cross‐breeding incident to study migratory behaviour in naturally occurring hybrids as well as in their parental species and explore links between migratory traits and predation risk. To achieve this, we used electronic tags and passive telemetry to record detailed individual migration patterns (timing and number of migratory trips) in two common freshwater fish species, roach Rutilus rutilus, common bream Abramis brama as well as their hybrids. Next, we scanned for tags regurgitated by a key avian predator (great cormorant Phalacrocorax carbo) at nearby roosting sites, allowing us to directly link migratory behaviour to predation risk in the wild. We found that hybrid individuals showed a higher number of short, multi‐trip movements between lake and stream habitats as compared to both parental species. The mean date of first lake departure differed between bream and roach by more than 10 days, while hybrids departed in two distinct peaks that overlapped with the parental species' averages. Moreover, the probability of cormorant predation increased with multi‐trip movement frequency across species and was higher for hybrids. Our data provide novel insights into hybrid viability, with links to predator‐mediated ecological selection. Increased exposure to predators via maladaptive migratory behaviour reduces hybrid survival and can thereby reinforce species integrity.
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Affiliation(s)
- Varpu Pärssinen
- Department of Biology - Aquatic Ecology, Lund University, Lund, Sweden
| | - Kaj Hulthén
- Department of Biology - Aquatic Ecology, Lund University, Lund, Sweden
| | - Christer Brönmark
- Department of Biology - Aquatic Ecology, Lund University, Lund, Sweden
| | - Christian Skov
- National Institute of Aquatic Resources, Technical University of Denmark (DTU), Silkeborg, Denmark
| | - Jakob Brodersen
- Department of Fish Ecology and Evolution, Center for Ecology, Evolution and Biogeochemistry, EAWAG Swiss Federal Institute of Aquatic Science and Technology, Kastanienbaum, Switzerland.,Department of Aquatic Ecology & Evolution, Institute of Ecology and Evolution, University of Bern, Bern, Switzerland
| | - Henrik Baktoft
- National Institute of Aquatic Resources, Technical University of Denmark (DTU), Silkeborg, Denmark
| | - Ben B Chapman
- Division of Evolution and Genomics, School of Biological Sciences, University of Manchester, Manchester, UK
| | | | - Per Anders Nilsson
- Department of Biology - Aquatic Ecology, Lund University, Lund, Sweden.,Department of Environmental and Life Sciences - Biology, Karlstad University, Karlstad, Sweden
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39
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Abstract
Migration is a complex trait that often has genetic underpinnings. However, it is unclear if migratory behaviour itself is inherited (direct genetic control), or if the decision to migrate is instead the outcome of a set of physiological traits (indirect genetic control). For steelhead/rainbow trout (Oncorhynchus mykiss), migration is strongly linked to a large genomic region across their range. Here, we demonstrate a shared allelic basis between early life growth rate and migratory behaviour. Next, we demonstrate that early life growth differs among resident/migratory genotypes in wild juveniles several months prior to migration, with resident genotypes achieving a larger size in their first few months of life than migratory genotypes. We suggest that the genetic basis of migration is likely indirect and mediated by physiological traits such as growth rate. Evolutionary benefits of this indirect genetic mechanism likely include flexibility among individuals and persistence of life-history diversity within and among populations.
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Affiliation(s)
- Suzanne J Kelson
- Global Water Center, Biology Department, University of Nevada, Reno, NV, USA
| | - Stephanie M Carlson
- Environmental Science, Policy, and Management, University of California, Berkeley, CA, USA
| | - Michael R Miller
- Department of Animal Science, University of California, Davis, CA, USA
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40
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Beauchamp AT, Guglielmo CG, Morbey YE. Stopover refuelling, movement and departure decisions in the white-throated sparrow: The influence of intrinsic and extrinsic factors during spring migration. J Anim Ecol 2020; 89:2553-2566. [PMID: 32770676 DOI: 10.1111/1365-2656.13315] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 06/30/2020] [Indexed: 11/28/2022]
Abstract
Differential migration timing between sex or age classes is an example of how migratory movement strategies can differ among subgroups within a population. However, in songbirds, evidence for intrinsic differences in en route migratory behaviour is often mixed, suggesting that the local environmental context may play a role in accentuating or diminishing patterns. We evaluated how multiple intrinsic and extrinsic variables influenced refuelling rates, local movement behaviour and departure decisions in the white-throated sparrow Zonotrichia albicollis during spring migration. This species exhibits a unique genetically based plumage dimorphism, providing a unique class of individual in which to evaluate patterns and processes of differential migration, in addition to sex, age and migration distance. At a migratory stopover site, plasma metabolite analysis was used to quantify individual variation in stopover refuelling rate. In after second year adults, automated and manual radio telemetry was used to quantify daily activity timing, daily movement distances, stopover duration and departure time. Arrival timing to the stopover site was determined using capture data. Non-breeding and previous breeding/natal latitude were determined using analysis of hydrogen isotopes in claws and feathers. Males arrived at the stopover site 11 days on average before females, but no difference in migration timing was observed between plumage morph or age classes. After second year, adults with more southern previous breeding latitudes arrived at stopover earlier, whereas second year birds making their first return migration arrived at stopover in an inverse relationship to non-breeding latitude. Stopover refuelling rate did not differ between ages, sexes or plumage morphs, and daily departure probability of adults was higher under warmer temperatures and favourable tailwinds. White-striped morphs moved greater distances during stopover, initiated daily activity earlier in the morning and departed for migration earlier in the evening than tan-striped morphs. Our results show that while individual phenotype can influence some aspects of local stopover-scale movement behaviour, evidence for differential stopover behaviour was weak. Differential migration timing is unlikely to result from intrinsic differences in en route refuelling rate and departure decisions, especially because the latter is strongly influenced by meteorological conditions.
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Affiliation(s)
- Andrew T Beauchamp
- Department of Biology, Advanced Facility for Avian Research, University of Western Ontario, London, ON, Canada
| | - Christopher G Guglielmo
- Department of Biology, Advanced Facility for Avian Research, University of Western Ontario, London, ON, Canada
| | - Yolanda E Morbey
- Department of Biology, Advanced Facility for Avian Research, University of Western Ontario, London, ON, Canada
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41
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Reid JM, Souter M, Fenn SR, Acker P, Payo-Payo A, Burthe SJ, Wanless S, Daunt F. Among-individual and within-individual variation in seasonal migration covaries with subsequent reproductive success in a partially migratory bird. Proc Biol Sci 2020; 287:20200928. [PMID: 32693718 PMCID: PMC7423652 DOI: 10.1098/rspb.2020.0928] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 06/30/2020] [Indexed: 01/05/2023] Open
Abstract
Within-individual and among-individual variation in expression of key environmentally sensitive traits, and associated variation in fitness components occurring within and between years, determine the extents of phenotypic plasticity and selection and shape population responses to changing environments. Reversible seasonal migration is one key trait that directly mediates spatial escape from seasonally deteriorating environments, causing spatio-seasonal population dynamics. Yet, within-individual and among-individual variation in seasonal migration versus residence, and dynamic associations with subsequent reproductive success, have not been fully quantified. We used novel capture-mark-recapture mixture models to assign individual European shags (Phalacrocorax aristotelis) to 'resident', 'early migrant', or 'late migrant' strategies in two consecutive years, using year-round local resightings. We demonstrate substantial among-individual variation in strategy within years, and directional within-individual change between years. Furthermore, subsequent reproductive success varied substantially among strategies, and relationships differed between years; residents and late migrants had highest success in the 2 years, respectively, matching the years in which these strategies were most frequently expressed. These results imply that migratory strategies can experience fluctuating reproductive selection, and that flexible expression of migration can be partially aligned with reproductive outcomes. Plastic seasonal migration could then potentially contribute to adaptive population responses to currently changing forms of environmental seasonality.
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Affiliation(s)
- Jane M. Reid
- School of Biological Sciences, University of Aberdeen, Aberdeen AB24 2TZ, Scotland
- Centre for Biodiversity Dynamics, Institutt for Biologi, NTNU, Trondheim, Norway
| | | | - Sarah R. Fenn
- School of Biological Sciences, University of Aberdeen, Aberdeen AB24 2TZ, Scotland
| | - Paul Acker
- School of Biological Sciences, University of Aberdeen, Aberdeen AB24 2TZ, Scotland
| | - Ana Payo-Payo
- School of Biological Sciences, University of Aberdeen, Aberdeen AB24 2TZ, Scotland
| | - Sarah J. Burthe
- UK Centre for Ecology & Hydrology, Edinburgh EH26 0QB, Scotland
| | - Sarah Wanless
- UK Centre for Ecology & Hydrology, Edinburgh EH26 0QB, Scotland
| | - Francis Daunt
- UK Centre for Ecology & Hydrology, Edinburgh EH26 0QB, Scotland
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42
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Debes PV, Piavchenko N, Erkinaro J, Primmer CR. Genetic growth potential, rather than phenotypic size, predicts migration phenotype in Atlantic salmon. Proc Biol Sci 2020; 287:20200867. [PMID: 32693717 DOI: 10.1098/rspb.2020.0867] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Knowledge of the relative importance of genetic versus environmental determinants of major developmental transitions is pertinent to understanding phenotypic evolution. In salmonid fishes, a major developmental transition enables a risky seaward migration that provides access to feed resources. In Atlantic salmon, initiation of the migrant phenotype, and thus age of migrants, is presumably controlled via thresholds of a quantitative liability, approximated by body size expressed long before the migration. However, how well size approximates liability, both genetically and environmentally, remains uncertain. We studied 32 Atlantic salmon families in two temperatures and feeding regimes (fully fed, temporarily restricted) to completion of migration status at age 1 year. We detected a lower migrant probability in the cold (0.42) than the warm environment (0.76), but no effects of male maturation status or feed restriction. By contrast, body length in late summer predicted migrant probability and its control reduced migrant probability heritability by 50-70%. Furthermore, migrant probability and length showed high heritabilities and between-environment genetic correlations, and were phenotypically highly correlated with stronger genetic than environmental contributions. Altogether, quantitative estimates for the genetic and environmental effects predicting the migrant phenotype indicate, for a given temperature, a larger importance of genetic than environmental size effects.
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Affiliation(s)
- Paul V Debes
- Organismal & Evolutionary Biology Research Program, University of Helsinki, Helsinki 00014, Finland.,Department of Aquaculture and Fish Biology, Hólar University College, Sauðárkrókur 551, Iceland
| | - Nikolai Piavchenko
- Organismal & Evolutionary Biology Research Program, University of Helsinki, Helsinki 00014, Finland
| | - Jaakko Erkinaro
- Natural Resources Institute Finland (Luke), Oulu 90014, Finland
| | - Craig R Primmer
- Organismal & Evolutionary Biology Research Program, University of Helsinki, Helsinki 00014, Finland.,Institute of Biotechnology, University of Helsinki, Helsinki 00014, Finland
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43
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Archer LC, Hutton SA, Harman L, McCormick SD, O'Grady MN, Kerry JP, Poole WR, Gargan P, McGinnity P, Reed TE. Food and temperature stressors have opposing effects in determining flexible migration decisions in brown trout (Salmo trutta). GLOBAL CHANGE BIOLOGY 2020; 26:2878-2896. [PMID: 32103581 DOI: 10.1111/gcb.14990] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Accepted: 12/13/2019] [Indexed: 06/10/2023]
Abstract
With rapid global change, organisms in natural systems are exposed to a multitude of stressors that likely co-occur, with uncertain impacts. We explored individual and cumulative effects of co-occurring environmental stressors on the striking, yet poorly understood, phenomenon of facultative migration. We reared offspring of a brown trout population that naturally demonstrates facultative anadromy (sea migration), under different environmental stressor treatments and measured life history responses in terms of migratory tactics and freshwater maturation rates. Juvenile fish were exposed to reduced food availability, temperatures elevated to 1.8°C above natural conditions or both treatments in combination over 18 months of experimental tank rearing. When considered in isolation, reduced food had negative effects on the size, mass and condition of fish across the experiment. We detected variable effects of warm temperatures (negative effects on size and mass, but positive effect on lipids). When combined with food restriction, temperature effects on these traits were less pronounced, implying antagonistic stressor effects on morphological traits. Stressors combined additively, but had opposing effects on life history tactics: migration increased and maturation rates decreased under low food conditions, whereas the opposite occurred in the warm temperature treatment. Not all fish had expressed maturation or migration tactics by the end of the study, and the frequency of these 'unassigned' fish was higher in food deprivation treatments, but lower in warm treatments. Fish showing migration tactics were smaller and in poorer condition than fish showing maturation tactics, but were similar in size to unassigned fish. We further detected effects of food restriction on hypo-osmoregulatory function of migrants that may influence the fitness benefits of the migratory tactic at sea. We also highlight that responses to multiple stressors may vary depending on the response considered. Collectively, our results indicate contrasting effects of environmental stressors on life history trajectories in a facultatively migratory species.
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Affiliation(s)
- Louise C Archer
- School of Biological, Earth and Environmental Sciences, University College Cork, Cork, Ireland
- Environmental Research Institute, University College Cork, Cork, Ireland
| | - Stephen A Hutton
- School of Biological, Earth and Environmental Sciences, University College Cork, Cork, Ireland
- Environmental Research Institute, University College Cork, Cork, Ireland
| | - Luke Harman
- School of Biological, Earth and Environmental Sciences, University College Cork, Cork, Ireland
- Environmental Research Institute, University College Cork, Cork, Ireland
| | - Stephen D McCormick
- Leetown Science Centre, S.O. Conte Anadromous Fish Research Laboratory, U.S. Geological Survey, Turners Falls, MA, USA
| | - Michael N O'Grady
- Food Packaging Group, School of Food and Nutritional Sciences, University College Cork, Cork, Ireland
| | - Joseph P Kerry
- Food Packaging Group, School of Food and Nutritional Sciences, University College Cork, Cork, Ireland
| | | | | | - Philip McGinnity
- School of Biological, Earth and Environmental Sciences, University College Cork, Cork, Ireland
- Marine Institute, Newport, Ireland
| | - Thomas E Reed
- School of Biological, Earth and Environmental Sciences, University College Cork, Cork, Ireland
- Environmental Research Institute, University College Cork, Cork, Ireland
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44
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Guiry E, Royle TCA, Matson RG, Ward H, Weir T, Waber N, Brown TJ, Hunt BPV, Price MHH, Finney BP, Kaeriyama M, Qin Y, Yang DY, Szpak P. Differentiating salmonid migratory ecotypes through stable isotope analysis of collagen: Archaeological and ecological applications. PLoS One 2020; 15:e0232180. [PMID: 32343728 PMCID: PMC7188214 DOI: 10.1371/journal.pone.0232180] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 04/08/2020] [Indexed: 02/02/2023] Open
Abstract
The ability to distinguish between different migratory behaviours (e.g., anadromy and potamodromy) in fish can provide important insights into the ecology, evolution, and conservation of many aquatic species. We present a simple stable carbon isotope (δ13C) approach for distinguishing between sockeye (anadromous ocean migrants) and kokanee (potamodromous freshwater residents), two migratory ecotypes of Oncorhynchus nerka (Salmonidae) that is applicable throughout most of their range across coastal regions of the North Pacific Ocean. Analyses of kokanee (n = 239) and sockeye (n = 417) from 87 sites spanning the North Pacific (Russia to California) show that anadromous and potamodromous ecotypes are broadly distinguishable on the basis of the δ13C values of their scale and bone collagen. We present three case studies demonstrating how this approach can address questions in archaeology, archival, and conservation research. Relative to conventional methods for determining migratory status, which typically apply chemical analyses to otoliths or involve genetic analyses of tissues, the δ13C approach outlined here has the benefit of being non-lethal (when applied to scales), cost-effective, widely available commercially, and should be much more broadly accessible for addressing archaeological questions since the recovery of otoliths at archaeological sites is rare.
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Affiliation(s)
- Eric Guiry
- Department of Anthropology, Trent University, Peterborough, Ontario, Canada
- School of Archaeology and Ancient History, University of Leicester, Leicester, United Kingdom
- Department of Anthropology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Thomas C. A. Royle
- Department of Archaeology, Ancient DNA Laboratory, Simon Fraser University, Burnaby, British Columbia, Canada
| | - R. G. Matson
- Department of Anthropology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Hillary Ward
- Ministry of Forests, Lands, Natural Resource Operations and Rural Development, Government of British Columbia, Penticton, British Columbia, Canada
| | - Tyler Weir
- Ministry of Forests, Lands, Natural Resource Operations and Rural Development, Government of British Columbia, Penticton, British Columbia, Canada
| | - Nicholas Waber
- Department of Anthropology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Thomas J. Brown
- Department of Anthropology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Brian P. V. Hunt
- Institute for the Oceans and Fisheries, University of British Columbia, Vancouver, British Columbia, Canada
- Department of Earth, Ocean and Atmospheric Sciences, University of British Columbia, Vancouver, British Columbia, Canada
- Hakai Institute, Heriot Bay, British Columbia, Canada
| | - Michael H. H. Price
- Department of Biological Sciences, Earth to Ocean Research Group, Simon Fraser University, British Columbia, Canada
| | - Bruce P. Finney
- Department of Biological Sciences, Idaho State University, Pocatello, Idaho, United States of America
- Department of Geosciences, Idaho State University, Pocatello, Idaho, United States of America
| | | | - Yuxue Qin
- School of Marine Science and Environmental Engineering, Dalian Ocean University, Dalian, Liaoning, China
| | - Dongya Y. Yang
- Department of Archaeology, Ancient DNA Laboratory, Simon Fraser University, Burnaby, British Columbia, Canada
| | - Paul Szpak
- Department of Anthropology, Trent University, Peterborough, Ontario, Canada
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45
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Burton T, Rollinson N, McKelvey S, Stewart DC, Armstrong JD, Metcalfe NB. Adaptive Maternal Investment in the Wild? Links between Maternal Growth Trajectory and Offspring Size, Growth, and Survival in Contrasting Environments. Am Nat 2020; 195:678-690. [PMID: 32216673 DOI: 10.1086/707518] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Life-history theory predicts that investment per offspring should correlate negatively with the quality of the environment that offspring are anticipated to encounter; parents may use their own experience as juveniles to predict this environment and may modulate offspring traits, such as growth capacity and initial size. We manipulated nutrient levels in the juvenile habitat of wild Atlantic salmon (Salmo salar) to investigate the hypothesis that the egg size that maximizes juvenile growth and survival depends on environmental quality. We also tested whether offspring traits were related to parental growth trajectory. Mothers that grew fast when young produced more offspring and smaller offspring than mothers that grew slowly to reach the same size. Despite their size disadvantage, offspring of faster-growing mothers grew faster than those of slower-growing mothers in all environments, counter to the expectation that they would be competitively disadvantaged. However, they had lower relative survival in environments where the density of older predatory/competitor fish was relatively high. These links between maternal (but not paternal) growth trajectory and offspring survival rate were independent of egg size, underscoring that mothers may be adjusting egg traits other than size to suit the environment their offspring are anticipated to face.
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46
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Kelson SJ, Power ME, Finlay JC, Carlson SM. Partial migration alters population ecology and food chain length: evidence from a salmonid fish. Ecosphere 2020. [DOI: 10.1002/ecs2.3044] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Affiliation(s)
- Suzanne J. Kelson
- Department of Environmental Science, Policy and Management University of California, Berkeley 130 Mulford Hall Berkeley California 94720 USA
| | - Mary E. Power
- Department of Integrative Biology University of California, Berkeley 23060 Valley Life Sciences Building #3140 Berkeley California 94720 USA
| | - Jacques C. Finlay
- College of Biological Sciences University of Minnesota 1987 Upper Buford Circle St. Paul Minnesota 55108 USA
| | - Stephanie M. Carlson
- Department of Environmental Science, Policy and Management University of California, Berkeley 130 Mulford Hall Berkeley California 94720 USA
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47
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Wakiya R, Kaifu K, Azechi K, Tsukamoto K, Mochioka N. Evaluation of downward movements of Japanese eel Anguilla japonica inhabiting brackish water areas. JOURNAL OF FISH BIOLOGY 2020; 96:516-526. [PMID: 31872428 DOI: 10.1111/jfb.14236] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Accepted: 12/18/2019] [Indexed: 06/10/2023]
Abstract
This study evaluated the size and age distributions and otolith microchemistry of the Japanese eel Anguilla japonica in freshwater and brackish water areas in the Aki and Tsuchikawa rivers for 1 year, and in brackish water areas in the Asahi River for 3 years to understand the movements of Japanese eels between continental habitats of different salinity after recruitment (n = 759). For all three rivers, the total length (LT ) and age distributions were consistent; yellow eels captured in the upper brackish water (Aki River: 353.5 ± 77.4 mm and 3.0 ± 0.8 years; Tsuchikawa River: 287.7 ± 87.3 mm and 3.7 ± 1.3 years; Asahi River: 418.2 ± 112.1 mm and 4.2 ± 1.7 years) were smaller and younger than not only those in the fresh water of the two rivers but also those in the lowest brackish water sampling areas (Aki River: 436.0 ± 71.6 mm and 3.8 ± 1.1 years; Tsuchikawa River: 370.9 ± 121.7 mm and 4.9 ± 2.3 years; Asahi River: 558.5 ± 85.9 mm and 5.7 ± 1.7 years). In the Asahi River, these tendencies were found throughout the 3 years. Otolith analysis indicated that the majority of the eels captured in the lowest brackish water areas had moved down from upstream. These results suggest that Japanese eels inhabiting saline water generally move from the upper estuary as they grow. The upper estuary can be an important area for the management of this species because these eels spend their early continental growth life there.
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Affiliation(s)
- Ryoshiro Wakiya
- Laboratory of Fisheries Biology, Faculty of Agriculture, Kyushu University, Fukuoka, Japan
| | - Kenzo Kaifu
- Faculty of Law, Chuo University, Tokyo, Japan
| | - Kazuhisa Azechi
- Shallow/Fresh Water Group, Fisheries Research Division, Oita Prefectural Agriculture, Forestry and Fisheries Research Center, Bungotakada, Japan
| | - Katsumi Tsukamoto
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Noritaka Mochioka
- Laboratory of Fisheries Biology, Faculty of Agriculture, Kyushu University, Fukuoka, Japan
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48
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Schneider K, Adams CE, Elmer KR. Parallel selection on ecologically relevant gene functions in the transcriptomes of highly diversifying salmonids. BMC Genomics 2019; 20:1010. [PMID: 31870285 PMCID: PMC6929470 DOI: 10.1186/s12864-019-6361-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 12/01/2019] [Indexed: 12/11/2022] Open
Abstract
Background Salmonid fishes are characterised by a very high level of variation in trophic, ecological, physiological, and life history adaptations. Some salmonid taxa show exceptional potential for fast, within-lake diversification into morphologically and ecologically distinct variants, often in parallel; these are the lake-resident charr and whitefish (several species in the genera Salvelinus and Coregonus). To identify selection on genes and gene categories associated with such predictable diversifications, we analysed 2702 orthogroups (4.82 Mbp total; average 4.77 genes/orthogroup; average 1783 bp/orthogroup). We did so in two charr and two whitefish species and compared to five other salmonid lineages, which do not evolve in such ecologically predictable ways, and one non-salmonid outgroup. Results All selection analyses are based on Coregonus and Salvelinus compared to non-diversifying taxa. We found more orthogroups were affected by relaxed selection than intensified selection. Of those, 122 were under significant relaxed selection, with trends of an overrepresentation of serine family amino acid metabolism and transcriptional regulation, and significant enrichment of behaviour-associated gene functions. Seventy-eight orthogroups were under significant intensified selection and were enriched for signalling process and transcriptional regulation gene ontology terms and actin filament and lipid metabolism gene sets. Ninety-two orthogroups were under diversifying/positive selection. These were enriched for signal transduction, transmembrane transport, and pyruvate metabolism gene ontology terms and often contained genes involved in transcriptional regulation and development. Several orthogroups showed signs of multiple types of selection. For example, orthogroups under relaxed and diversifying selection contained genes such as ap1m2, involved in immunity and development, and slc6a8, playing an important role in muscle and brain creatine uptake. Orthogroups under intensified and diversifying selection were also found, such as genes syn3, with a role in neural processes, and ctsk, involved in bone remodelling. Conclusions Our approach pinpointed relevant genomic targets by distinguishing among different kinds of selection. We found that relaxed, intensified, and diversifying selection affect orthogroups and gene functions of ecological relevance in salmonids. Because they were found consistently and robustly across charr and whitefish and not other salmonid lineages, we propose these genes have a potential role in the replicated ecological diversifications.
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Affiliation(s)
- Kevin Schneider
- Institute of Biodiversity, Animal Health & Comparative Medicine, College of Medical, Veterinary & Life Sciences, University of Glasgow, Glasgow, G12 8QQ, UK
| | - Colin E Adams
- Institute of Biodiversity, Animal Health & Comparative Medicine, College of Medical, Veterinary & Life Sciences, University of Glasgow, Glasgow, G12 8QQ, UK.,Scottish Centre for Ecology and the Natural Environment, University of Glasgow, Rowardennan, G63 0AW, UK
| | - Kathryn R Elmer
- Institute of Biodiversity, Animal Health & Comparative Medicine, College of Medical, Veterinary & Life Sciences, University of Glasgow, Glasgow, G12 8QQ, UK.
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Dermond P, Melián CJ, Brodersen J. Size-dependent tradeoffs in seasonal freshwater environments facilitate differential salmonid migration. MOVEMENT ECOLOGY 2019; 7:40. [PMID: 31890216 PMCID: PMC6925424 DOI: 10.1186/s40462-019-0185-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 11/29/2019] [Indexed: 06/09/2023]
Abstract
BACKGROUND Seasonal spatio-temporal variation in habitat quality and abiotic conditions leads to animals migrating between different environments around the world. Whereas mean population timing of migration is often fairly well understood, explanations for variation in migratory timing within populations are often lacking. Condition-dependent tradeoffs may be an understudied mechanism that can explain this differential migration. While fixed condition-specific thresholds have been identified in earlier work on ontogenetic niche shifts, they are rare in differential migration, suggesting that thresholds in such systems can shift based on temporally variable environmental conditions. METHODS We introduced a model based on size-specific tradeoffs between migration and growth in seasonal environments. We focused on optimal migratory timing for first-time migrants with no knowledge of an alternative habitat, which is a crucial stage in the life history of migratory salmonids. We predicted that optimal timing would occur when individuals move from their natal habitats based on a seasonally variable ratio of predation and growth. When the ratio becomes slightly more favorable in the alternative habitat, migratory movement can occur. As it keeps shifting throughout the season, the threshold for migration is variable, allowing smaller individuals to move at later dates. We compared our model predictions to empirical data on 3 years of migratory movement of more than 800 juvenile trout of varying size from natal to feeding habitat. RESULTS Both our model and empirical data showed that large individuals, which are assumed to have a lower predation risk in the migratory habitat, move earlier in the season than smaller individuals, whose predicted predation-to-growth ratio shifted to being favorable only later in the migratory season. Our model also predicted that the observed difference in migratory timing between large and small migrants occurred most often at low values of growth differential between the two habitats, suggesting that it was not merely high growth potential but rather the tradeoff between predation and growth that shaped differential migration patterns. CONCLUSIONS We showed the importance of considering condition-specific tradeoffs for understanding temporal population dynamics in spatially structured landscapes. Rather than assuming a fixed threshold, which appears to be absent based on previous work on salmonids, we showed that the body-size threshold for migration changed temporally throughout the season. This allowed increasingly smaller individuals to migrate when growth conditions peaked in the migratory habitat. Our model illuminates an understudied aspect of predation as part of a condition-dependent tradeoff that shapes migratory patterns, and our empirical data back patterns predicted by this model.
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Affiliation(s)
- Philip Dermond
- Department of Fish Ecology and Evolution, EAWAG Swiss Federal Institute of Aquatic Science and Technology, Centre of Ecology, Evolution and Biogeochemistry, Seestrasse 79, CH-6047 Kastanienbaum, Switzerland
- Institute of Ecology and Evolution, Aquatic Ecology, University of Bern, Baltzerstrasse 6, CH-3012 Bern, Switzerland
| | - Carlos J. Melián
- Department of Fish Ecology and Evolution, EAWAG Swiss Federal Institute of Aquatic Science and Technology, Centre of Ecology, Evolution and Biogeochemistry, Seestrasse 79, CH-6047 Kastanienbaum, Switzerland
- Institute of Ecology and Evolution, Aquatic Ecology, University of Bern, Baltzerstrasse 6, CH-3012 Bern, Switzerland
| | - Jakob Brodersen
- Department of Fish Ecology and Evolution, EAWAG Swiss Federal Institute of Aquatic Science and Technology, Centre of Ecology, Evolution and Biogeochemistry, Seestrasse 79, CH-6047 Kastanienbaum, Switzerland
- Institute of Ecology and Evolution, Aquatic Ecology, University of Bern, Baltzerstrasse 6, CH-3012 Bern, Switzerland
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Shry SJ, McCallum ES, Alanärä A, Persson L, Hellström G. Energetic Status Modulates Facultative Migration in Brown Trout (Salmo trutta) Differentially by Age and Spatial Scale. Front Ecol Evol 2019. [DOI: 10.3389/fevo.2019.00411] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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