1
|
Perry D, Tamarit E, Morgenroth D, Gräns A, Sturve J, Gullström M, Thor P, Wennhage H. The heat is on: sensitivity of goldsinny wrasse to global climate change. CONSERVATION PHYSIOLOGY 2024; 12:coae068. [PMID: 39381801 PMCID: PMC11459238 DOI: 10.1093/conphys/coae068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Revised: 09/12/2024] [Accepted: 09/17/2024] [Indexed: 10/10/2024]
Abstract
Unsustainable harvesting practices have drastically reduced fish populations globally and developments in aquaculture have increased. Unexpectedly, Atlantic salmon farming caused the opening of a new fishery in northern European countries, where previously unharvested mesopredatory species, like the goldsinny wrasse (Ctenolabrus rupestris), are captured for use as cleaner fish in pens along the coast and fjords. The goldsinny wrasse is widespread in coastal areas where it plays an ecologically important role as a predator of small invertebrates. Since climate change effects are particularly pronounced in coastal waters, it becomes urgent to understand how fish like the goldsinny will respond to global climate change, including the increasing frequency and intensity of marine heatwaves (MHWs), ocean freshening (OF) and ocean acidification (OA). To address this, we conducted a multi-stressor experiment exposing adult goldsinny to each stressor individually, as well as to all three combined. The results indicated that the goldsinny is highly affected by MHWs and extremely sensitive to a multi-stressor environment, with 34% and 53% mortality, respectively. Additionally, exposure to a MHW event, OF and multi-stressor conditions affected fish metabolism, with the highest standard metabolic- and maximum metabolic-oxygen consumption rates observed for the MHW treatment. Increases in oxidized glutathione (GSSG) and percent oxidized glutathione (% GSSG) in the livers, indicative of oxidative stress, were also seen in the MHW, OF and multi-stressor treatments. As a single stressor, OA showed no significant impacts on the measured parameters. This information is important for conservation of coastal marine environments, given the species' important role in shallow-water habitats and for management of goldsinny or other mesopredatory fish harvested in coastal ecosystems. The sensitivity of the goldsinny wrasse to future stressors is of concern, and any potential reductions in abundance as a result of climate change may lead to cascade effects with ecosystem-wide consequences.
Collapse
Affiliation(s)
- Diana Perry
- Department of Aquatic Resources, Swedish University of Agricultural Sciences, Turistgatan 5, 453 30 Lysekil, Sweden
| | - Elena Tamarit
- Department of Earth Sciences, University of Gothenburg, Hörsalsvägen 9, 412 58 Gothenburg, Sweden
| | - Daniel Morgenroth
- Department of Applied Animal Science and Welfare, Swedish University of Agricultural Sciences, Medicinaregatan 7B, 41390 Gothenburg, Sweden
| | - Albin Gräns
- Department of Applied Animal Science and Welfare, Swedish University of Agricultural Sciences, Medicinaregatan 7B, 41390 Gothenburg, Sweden
| | - Joachim Sturve
- Department of Biological and Environmental Sciences, University of Gothenburg, Medicinaregatan 7B, 413 90 Gothenburg, Sweden
| | - Martin Gullström
- School of Natural Sciences, Technology and Environmental Studies, Södertörn University, S-141 89 Huddinge, Sweden
| | - Peter Thor
- Department of Aquatic Resources, Swedish University of Agricultural Sciences, Turistgatan 5, 453 30 Lysekil, Sweden
| | - Håkan Wennhage
- Department of Aquatic Resources, Swedish University of Agricultural Sciences, Turistgatan 5, 453 30 Lysekil, Sweden
| |
Collapse
|
2
|
Nugent CM, Kess T, Brachmann MK, Langille BL, Duffy SJ, Lehnert SJ, Wringe BF, Bentzen P, Bradbury IR. Whole-genome sequencing reveals fine-scale environment-associated divergence near the range limits of a temperate reef fish. Mol Ecol 2023; 32:4742-4762. [PMID: 37430462 DOI: 10.1111/mec.17063] [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: 11/25/2022] [Revised: 06/13/2023] [Accepted: 06/19/2023] [Indexed: 07/12/2023]
Abstract
Environmental variation is increasingly recognized as an important driver of diversity in marine species despite the lack of physical barriers to dispersal and the presence of pelagic stages in many taxa. A robust understanding of the genomic and ecological processes involved in structuring populations is lacking for most marine species, often hindering management and conservation action. Cunner (Tautogolabrus adspersus) is a temperate reef fish with both pelagic early life-history stages and strong site-associated homing as adults; the species is also of interest for use as a cleaner fish in salmonid aquaculture in Atlantic Canada. We aimed to characterize genomic and geographic differentiation of cunner in the Northwest Atlantic. To achieve this, a chromosome-level genome assembly for cunner was produced and used to characterize spatial population structure throughout Atlantic Canada using whole-genome sequencing. The genome assembly spanned 0.72 Gbp and 24 chromosomes; whole-genome sequencing of 803 individuals from 20 locations from Newfoundland to New Jersey identified approximately 11 million genetic variants. Principal component analysis revealed four regional Atlantic Canadian groups. Pairwise FST and selection scans revealed signals of differentiation and selection at discrete genomic regions, including adjacent peaks on chromosome 10 across multiple pairwise comparisons (i.e. FST 0.5-0.75). Redundancy analysis suggested association of environmental variables related to benthic temperature and oxygen range with genomic structure. Results suggest regional scale diversity in this temperate reef fish and can directly inform the collection and translocation of cunner for aquaculture applications and the conservation of wild populations throughout the Northwest Atlantic.
Collapse
Affiliation(s)
- Cameron M Nugent
- Fisheries and Oceans Canada, Northwest Atlantic Fisheries Centre, St. John's, Newfoundland, Canada
| | - Tony Kess
- Fisheries and Oceans Canada, Northwest Atlantic Fisheries Centre, St. John's, Newfoundland, Canada
| | - Matthew K Brachmann
- Fisheries and Oceans Canada, Northwest Atlantic Fisheries Centre, St. John's, Newfoundland, Canada
| | - Barbara L Langille
- Fisheries and Oceans Canada, Northwest Atlantic Fisheries Centre, St. John's, Newfoundland, Canada
| | - Steven J Duffy
- Fisheries and Oceans Canada, Northwest Atlantic Fisheries Centre, St. John's, Newfoundland, Canada
| | - Sarah J Lehnert
- Fisheries and Oceans Canada, Northwest Atlantic Fisheries Centre, St. John's, Newfoundland, Canada
| | - Brendan F Wringe
- Fisheries and Oceans Canada, Bedford Institute of Oceanography, Dartmouth, Nova Scotia, Canada
| | - Paul Bentzen
- Department of Biology, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Ian R Bradbury
- Fisheries and Oceans Canada, Northwest Atlantic Fisheries Centre, St. John's, Newfoundland, Canada
| |
Collapse
|
3
|
Langille BL, Kess T, Brachmann M, Nugent CM, Messmer A, Duffy SJ, Holborn MK, Van Wyngaarden M, Knutsen TM, Kent M, Boyce D, Gregory RS, Gauthier J, Fairchild EA, Pietrak M, Eddy S, de Leaniz CG, Consuegra S, Whittaker B, Bentzen P, Bradbury IR. Fine-scale environmentally associated spatial structure of lumpfish ( Cyclopterus lumpus) across the Northwest Atlantic. Evol Appl 2023; 16:1619-1636. [PMID: 37752959 PMCID: PMC10519416 DOI: 10.1111/eva.13590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 07/10/2023] [Accepted: 08/14/2023] [Indexed: 09/28/2023] Open
Abstract
Lumpfish, Cyclopterus lumpus, have historically been harvested throughout Atlantic Canada and are increasingly in demand as a solution to controlling sea lice in Atlantic salmon farms-a process which involves both the domestication and the transfer of lumpfish between geographic regions. At present, little is known regarding population structure and diversity of wild lumpfish in Atlantic Canada, limiting attempts to assess the potential impacts of escaped lumpfish individuals from salmon pens on currently at-risk wild populations. Here, we characterize the spatial population structure and genomic-environmental associations of wild populations of lumpfish throughout the Northwest Atlantic using both 70K SNP array data and whole-genome re-sequencing data (WGS). At broad spatial scales, our results reveal a large environmentally associated genetic break between the southern populations (Gulf of Maine and Bay of Fundy) and northern populations (Newfoundland and the Gulf of St. Lawrence), linked to variation in ocean temperature and ice cover. At finer spatial scales, evidence of population structure was also evident in a distinct coastal group in Newfoundland and significant isolation by distance across the northern region. Both evidence of consistent environmental associations and elevated genome-wide variation in F ST values among these three regional groups supports their biological relevance. This study represents the first extensive description of population structure of lumpfish in Atlantic Canada, revealing evidence of broad and fine geographic scale environmentally associated genomic diversity. Our results will facilitate the commercial use of lumpfish as a cleaner fish in Atlantic salmon aquaculture, the identification of lumpfish escapees, and the delineation of conservation units of this at-risk species throughout Atlantic Canada.
Collapse
Affiliation(s)
- Barbara L. Langille
- Northwest Atlantic Fisheries Centre, Fisheries and Oceans CanadaSt. John'sNewfoundland and LabradorCanada
| | - Tony Kess
- Northwest Atlantic Fisheries Centre, Fisheries and Oceans CanadaSt. John'sNewfoundland and LabradorCanada
| | - Matthew Brachmann
- Northwest Atlantic Fisheries Centre, Fisheries and Oceans CanadaSt. John'sNewfoundland and LabradorCanada
| | - Cameron M. Nugent
- Northwest Atlantic Fisheries Centre, Fisheries and Oceans CanadaSt. John'sNewfoundland and LabradorCanada
| | - Amber Messmer
- Northwest Atlantic Fisheries Centre, Fisheries and Oceans CanadaSt. John'sNewfoundland and LabradorCanada
| | - Steven J. Duffy
- Northwest Atlantic Fisheries Centre, Fisheries and Oceans CanadaSt. John'sNewfoundland and LabradorCanada
| | - Melissa K. Holborn
- Northwest Atlantic Fisheries Centre, Fisheries and Oceans CanadaSt. John'sNewfoundland and LabradorCanada
| | - Mallory Van Wyngaarden
- Northwest Atlantic Fisheries Centre, Fisheries and Oceans CanadaSt. John'sNewfoundland and LabradorCanada
| | | | - Matthew Kent
- Department of Animal and Aquacultural Sciences, Faculty of Biosciences, Centre for Integrative GeneticsNorwegian University of Life SciencesÅsNorway
| | - Danny Boyce
- Department of Ocean Sciences, Ocean Sciences CentreMemorial University of NewfoundlandSt John'sNewfoundland and LabradorCanada
| | - Robert S. Gregory
- Northwest Atlantic Fisheries Centre, Fisheries and Oceans CanadaSt. John'sNewfoundland and LabradorCanada
| | - Johanne Gauthier
- Maurice Lamontagne Institute, Fisheries and Oceans CanadaQuebecCanada
| | | | - Michael Pietrak
- USDA, Agricultural Research ServiceNational Cold Water Marine Aquaculture CenterFranklinMaineUSA
| | - Stephen Eddy
- University of Maine Center for Cooperative Aquaculture ResearchFranklinMaineUSA
| | | | - Sofia Consuegra
- Centre for Sustainable Aquatic Research, Swansea UniversitySwanseaUK
| | - Ben Whittaker
- Centre for Sustainable Aquatic Research, Swansea UniversitySwanseaUK
| | - Paul Bentzen
- Marine Gene Probe Laboratory, Department of BiologyDalhousie UniversityHalifaxNova ScotiaCanada
| | - Ian R. Bradbury
- Northwest Atlantic Fisheries Centre, Fisheries and Oceans CanadaSt. John'sNewfoundland and LabradorCanada
- Marine Gene Probe Laboratory, Department of BiologyDalhousie UniversityHalifaxNova ScotiaCanada
| |
Collapse
|
4
|
Jansson E, Faust E, Bekkevold D, Quintela M, Durif C, Halvorsen KT, Dahle G, Pampoulie C, Kennedy J, Whittaker B, Unneland L, Post S, André C, Glover KA. Global, regional, and cryptic population structure in a high gene-flow transatlantic fish. PLoS One 2023; 18:e0283351. [PMID: 36940210 PMCID: PMC10027230 DOI: 10.1371/journal.pone.0283351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 03/07/2023] [Indexed: 03/21/2023] Open
Abstract
Lumpfish (Cyclopterus lumpus) is a transatlantic marine fish displaying large population sizes and a high potential for dispersal and gene-flow. These features are expected to result in weak population structure. Here, we investigated population genetic structure of lumpfish throughout its natural distribution in the North Atlantic using two approaches: I) 4,393 genome wide SNPs and 95 individuals from 10 locations, and II) 139 discriminatory SNPs and 1,669 individuals from 40 locations. Both approaches identified extensive population genetic structuring with a major split between the East and West Atlantic and a distinct Baltic Sea population, as well as further differentiation of lumpfish from the English Channel, Iceland, and Greenland. The discriminatory loci displayed ~2-5 times higher divergence than the genome wide approach, revealing further evidence of local population substructures. Lumpfish from Isfjorden in Svalbard were highly distinct but resembled most fish from Greenland. The Kattegat area in the Baltic transition zone, formed a previously undescribed distinct genetic group. Also, further subdivision was detected within North America, Iceland, West Greenland, Barents Sea, and Norway. Although lumpfish have considerable potential for dispersal and gene-flow, the observed high levels of population structuring throughout the Atlantic suggests that this species may have a natal homing behavior and local populations with adaptive differences. This fine-scale population structure calls for consideration when defining management units for exploitation of lumpfish stocks and in decisions related to sourcing and moving lumpfish for cleaner fish use in salmonid aquaculture.
Collapse
Affiliation(s)
- Eeva Jansson
- Institute of Marine Research, Nordnes, Bergen, Norway
| | - Ellika Faust
- Department of Marine Sciences - Tjärnö Marine Laboratory, University of Gothenburg, Strömstad, Sweden
| | - Dorte Bekkevold
- DTU-Aqua National Institute of Aquatic Resources, Technical University of Denmark, Silkeborg, Denmark
| | | | - Caroline Durif
- Institute of Marine Research, Austevoll Research Station, Storebø, Norway
| | | | - Geir Dahle
- Institute of Marine Research, Nordnes, Bergen, Norway
| | | | - James Kennedy
- Marine and Freshwater Research Institute, Hafnarfjörður, Iceland
| | - Benjamin Whittaker
- Department of Biosciences, Centre for Sustainable Aquatic Research, Swansea University, Swansea, United Kingdom
| | | | - Søren Post
- Greenland Institute of Natural Resources, Nuuk, Greenland
| | - Carl André
- Department of Marine Sciences - Tjärnö Marine Laboratory, University of Gothenburg, Strömstad, Sweden
| | | |
Collapse
|
5
|
Johannesson K, Leder EH, André C, Dupont S, Eriksson SP, Harding K, Havenhand JN, Jahnke M, Jonsson PR, Kvarnemo C, Pavia H, Rafajlović M, Rödström EM, Thorndyke M, Blomberg A. Ten years of marine evolutionary biology-Challenges and achievements of a multidisciplinary research initiative. Evol Appl 2023; 16:530-541. [PMID: 36793681 PMCID: PMC9923476 DOI: 10.1111/eva.13389] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Revised: 03/08/2022] [Accepted: 04/21/2022] [Indexed: 11/26/2022] Open
Abstract
The Centre for Marine Evolutionary Biology (CeMEB) at the University of Gothenburg, Sweden, was established in 2008 through a 10-year research grant of 8.7 m€ to a team of senior researchers. Today, CeMEB members have contributed >500 scientific publications, 30 PhD theses and have organised 75 meetings and courses, including 18 three-day meetings and four conferences. What are the footprints of CeMEB, and how will the centre continue to play a national and international role as an important node of marine evolutionary research? In this perspective article, we first look back over the 10 years of CeMEB activities and briefly survey some of the many achievements of CeMEB. We furthermore compare the initial goals, as formulated in the grant application, with what has been achieved, and discuss challenges and milestones along the way. Finally, we bring forward some general lessons that can be learnt from a research funding of this type, and we also look ahead, discussing how CeMEB's achievements and lessons can be used as a springboard to the future of marine evolutionary biology.
Collapse
Affiliation(s)
- Kerstin Johannesson
- Tjärnö Marine Laboratory, Department of Marine SciencesUniversity of GothenburgStrömstadSweden
| | - Erica H. Leder
- Tjärnö Marine Laboratory, Department of Marine SciencesUniversity of GothenburgStrömstadSweden
- Natural History MuseumUniversity of OsloOsloNorway
| | - Carl André
- Tjärnö Marine Laboratory, Department of Marine SciencesUniversity of GothenburgStrömstadSweden
| | - Sam Dupont
- Department of Biology and Environmental ScienceUniversity of Gothenburg, Kristineberg Marine Research StationFiskebäckskilSweden
- International Atomic Energy AgencyPrincipality of MonacoMonaco
| | - Susanne P. Eriksson
- Department of Biology and Environmental ScienceUniversity of Gothenburg, Kristineberg Marine Research StationFiskebäckskilSweden
| | - Karin Harding
- Department of Biology and Environmental ScienceUniversity of GothenburgGothenburgSweden
| | - Jonathan N. Havenhand
- Tjärnö Marine Laboratory, Department of Marine SciencesUniversity of GothenburgStrömstadSweden
| | - Marlene Jahnke
- Tjärnö Marine Laboratory, Department of Marine SciencesUniversity of GothenburgStrömstadSweden
| | - Per R. Jonsson
- Tjärnö Marine Laboratory, Department of Marine SciencesUniversity of GothenburgStrömstadSweden
| | - Charlotta Kvarnemo
- Department of Biology and Environmental ScienceUniversity of GothenburgGothenburgSweden
| | - Henrik Pavia
- Tjärnö Marine Laboratory, Department of Marine SciencesUniversity of GothenburgStrömstadSweden
| | - Marina Rafajlović
- Department of Marine SciencesUniversity of GothenburgGothenburgSweden
| | - Eva Marie Rödström
- Tjärnö Marine Laboratory, Department of Marine SciencesUniversity of GothenburgStrömstadSweden
| | - Michael Thorndyke
- Department of Biology and Environmental ScienceUniversity of Gothenburg, Kristineberg Marine Research StationFiskebäckskilSweden
- Department of Genomics Research in Ecology & Evolution in Nature (GREEN)Groningen Institute for Evolutionary Life Sciences (GELIFES)De Rijksuniversiteit GroningenGroningenThe Netherlands
| | - Anders Blomberg
- Department of Chemistry and Molecular BiologyUniversity of GothenburgGothenburgSweden
| |
Collapse
|
6
|
Lennox RJ, Barrett LT, Nilsen CI, Berhe S, Barlaup BT, Vollset KW. Moving cleaner fish from the wild into fish farms: A zero-sum game? Ecol Modell 2022. [DOI: 10.1016/j.ecolmodel.2022.110149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
7
|
Le Moan A, Roby C, Fraïsse C, Daguin-Thiébaut C, Bierne N, Viard F. An introgression breakthrough left by an anthropogenic contact between two ascidians. Mol Ecol 2021; 30:6718-6732. [PMID: 34547149 DOI: 10.1111/mec.16189] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 09/08/2021] [Accepted: 09/16/2021] [Indexed: 01/28/2023]
Abstract
Human-driven translocations of species have diverse evolutionary consequences such as promoting hybridization between previously geographically isolated taxa. This is well illustrated by the solitary tunicate, Ciona robusta, native to the North East Pacific and introduced in the North East Atlantic. It is now co-occurring with its congener Ciona intestinalis in the English Channel, and C. roulei in the Mediterranean Sea. Despite their long allopatric divergence, first and second generation crosses showed a high hybridization success between the introduced and native taxa in the laboratory. However, previous genetic studies failed to provide evidence of recent hybridization between C. robusta and C. intestinalis in the wild. Using SNPs obtained from ddRAD-sequencing of 397 individuals from 26 populations, we further explored the genome-wide population structure of the native Ciona taxa. We first confirmed results documented in previous studies, notably (i) a chaotic genetic structure at regional scale, and (ii) a high genetic similarity between C. roulei and C. intestinalis, which is calling for further taxonomic investigation. More importantly, and unexpectedly, we also observed a genomic hotspot of long introgressed C. robusta tracts into C. intestinalis genomes at several locations of their contact zone. Both the genomic architecture of introgression, restricted to a 1.5 Mb region of chromosome 5, and its absence in allopatric populations suggest introgression is recent and occurred after the introduction of the non-native species. Overall, our study shows that anthropogenic hybridization can be effective in promoting introgression breakthroughs between species at a late stage of the speciation continuum.
Collapse
Affiliation(s)
- Alan Le Moan
- Sorbonne Université, CNRS, UMR 7144, Station Biologique de Roscoff, Roscoff, France.,Department of Marine Sciences, Tjärnö Marine Laboratory, University of Gothenburg, Strömstad, Sweden
| | - Charlotte Roby
- Sorbonne Université, CNRS, UMR 7144, Station Biologique de Roscoff, Roscoff, France
| | | | | | | | - Frédérique Viard
- Sorbonne Université, CNRS, UMR 7144, Station Biologique de Roscoff, Roscoff, France.,ISEM, Univ Montpellier, CNRS, IRD, Montpellier, France
| |
Collapse
|
8
|
Faust E, Jansson E, André C, Halvorsen KT, Dahle G, Knutsen H, Quintela M, Glover KA. Not that clean: Aquaculture-mediated translocation of cleaner fish has led to hybridization on the northern edge of the species' range. Evol Appl 2021; 14:1572-1587. [PMID: 34178105 PMCID: PMC8210792 DOI: 10.1111/eva.13220] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 03/01/2021] [Accepted: 03/02/2021] [Indexed: 12/11/2022] Open
Abstract
Translocation and introduction of non-native organisms can have major impacts on local populations and ecosystems. Nevertheless, translocations are common practices in agri- and aquaculture. Each year, millions of wild-caught wrasses are transported large distances to be used as cleaner fish for parasite control in marine salmon farms. Recently, it was documented that translocated cleaner fish are able to escape and reproduce with local wild populations. This is especially a challenge in Norway, which is the world's largest salmon producer. Here, a panel of 84 informative SNPs was developed to identify the presence of nonlocal corkwing wrasse (Symphodus melops) escapees and admixed individuals in wild populations in western Norway. Applying this panel to ~2000 individuals, escapees and hybrids were found to constitute up to 20% of the local population at the northern edge of the species' distribution. The introduction of southern genetic material at the northern edge of the species distribution range has altered the local genetic composition and could obstruct local adaptation and further range expansion. Surprisingly, in other parts of the species distribution where salmon farming is also common, few escapees and hybrids were found. Why hybridization seems to be common only in the far north is discussed in the context of demographic and transport history. However, the current lack of reporting of escapes makes it difficult to evaluate possible causes for why some aquaculture-dense areas have more escapees and hybrids than others. The results obtained in this study, and the observed high genomic divergence between the main export and import regions, puts the sustainability of mass translocation of nonlocal wild wrasse into question and suggests that the current management regime needs re-evaluation.
Collapse
Affiliation(s)
- Ellika Faust
- Department of Marine Sciences – TjärnöUniversity of GothenburgStrömstadSweden
| | | | - Carl André
- Department of Marine Sciences – TjärnöUniversity of GothenburgStrömstadSweden
| | | | - Geir Dahle
- Institute of Marine ResearchBergenNorway
| | - Halvor Knutsen
- Institute of Marine ResearchHisNorway
- Centre of Coastal ResearchUniversity of AgderKristiansandNorway
| | | | - Kevin A. Glover
- Institute of Marine ResearchBergenNorway
- Institute of BiologyUniversity of BergenBergenNorway
| |
Collapse
|
9
|
Whittaker BA, Maeda S, Boulding EG. Strike a pose: Does communication by a facultative cleaner fish, the cunner wrasse (Tautogolabrus adspersus), facilitate interaction with Atlantic salmon (Salmo salar)? Appl Anim Behav Sci 2021. [DOI: 10.1016/j.applanim.2021.105275] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
10
|
Jansson E, Besnier F, Malde K, André C, Dahle G, Glover KA. Genome wide analysis reveals genetic divergence between Goldsinny wrasse populations. BMC Genet 2020; 21:118. [PMID: 33036553 PMCID: PMC7547435 DOI: 10.1186/s12863-020-00921-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 09/24/2020] [Indexed: 12/11/2022] Open
Abstract
Background Marine fish populations are often characterized by high levels of gene flow and correspondingly low genetic divergence. This presents a challenge to define management units. Goldsinny wrasse (Ctenolabrus rupestris) is a heavily exploited species due to its importance as a cleaner-fish in commercial salmonid aquaculture. However, at the present, the population genetic structure of this species is still largely unresolved. Here, full-genome sequencing was used to produce the first genomic reference for this species, to study population-genomic divergence among four geographically distinct populations, and, to identify informative SNP markers for future studies. Results After construction of a de novo assembly, the genome was estimated to be highly polymorphic and of ~600Mbp in size. 33,235 SNPs were thereafter selected to assess genomic diversity and differentiation among four populations collected from Scandinavia, Scotland, and Spain. Global FST among these populations was 0.015–0.092. Approximately 4% of the investigated loci were identified as putative global outliers, and ~ 1% within Scandinavia. SNPs showing large divergence (FST > 0.15) were picked as candidate diagnostic markers for population assignment. One hundred seventy-three of the most diagnostic SNPs between the two Scandinavian populations were validated by genotyping 47 individuals from each end of the species’ Scandinavian distribution range. Sixty-nine of these SNPs were significantly (p < 0.05) differentiated (mean FST_173_loci = 0.065, FST_69_loci = 0.140). Using these validated SNPs, individuals were assigned with high probability (≥ 94%) to their populations of origin. Conclusions Goldsinny wrasse displays a highly polymorphic genome, and substantial population genomic structure. Diversifying selection likely affects population structuring globally and within Scandinavia. The diagnostic loci identified now provide a promising and cost-efficient tool to investigate goldsinny wrasse populations further.
Collapse
Affiliation(s)
- Eeva Jansson
- Institute of Marine Research, P. O. Box 1870, Nordnes, 5817, Bergen, Norway.
| | - Francois Besnier
- Institute of Marine Research, P. O. Box 1870, Nordnes, 5817, Bergen, Norway
| | - Ketil Malde
- Institute of Marine Research, P. O. Box 1870, Nordnes, 5817, Bergen, Norway
| | - Carl André
- Department of Marine Sciences-Tjärnö, University of Gothenburg, 45296, Strömstad, Sweden
| | - Geir Dahle
- Institute of Marine Research, P. O. Box 1870, Nordnes, 5817, Bergen, Norway
| | - Kevin A Glover
- Institute of Marine Research, P. O. Box 1870, Nordnes, 5817, Bergen, Norway.,Institute of Biology, University of Bergen, P. O. Box 7803, 5020, Bergen, Norway
| |
Collapse
|
11
|
Long JM, Taylor AT, Buonaccorsi V. A conservation-oriented SNP panel for Smallmouth Bass (Micropterus dolomieu), with emphasis on Interior Highlands lineages. CONSERV GENET RESOUR 2020. [DOI: 10.1007/s12686-020-01170-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
12
|
Seljestad GW, Quintela M, Faust E, Halvorsen KT, Besnier F, Jansson E, Dahle G, Knutsen H, André C, Folkvord A, Glover KA. "A cleaner break": Genetic divergence between geographic groups and sympatric phenotypes revealed in ballan wrasse ( Labrus bergylta). Ecol Evol 2020; 10:6120-6135. [PMID: 32607218 PMCID: PMC7319121 DOI: 10.1002/ece3.6404] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 04/20/2020] [Accepted: 04/27/2020] [Indexed: 12/11/2022] Open
Abstract
Capture and long-distance translocation of cleaner fish to control lice infestations on marine salmonid farms has the potential to influence wild populations via overexploitation in source regions, and introgression in recipient regions. Knowledge of population genetic structure is therefore required. We studied the genetic structure of ballan wrasse, a phenotypically diverse and extensively used cleaner fish, from 18 locations in Norway and Sweden, and from Galicia, Spain, using 82 SNP markers. We detected two very distinct genetic groups in Scandinavia, northwestern and southeastern. These groups were split by a stretch of sandy beaches in southwest Norway, representing a habitat discontinuity for this rocky shore associated benthic egg-laying species. Wrasse from Galicia were highly differentiated from all Scandinavian locations, but more similar to northwestern than southeastern locations. Distinct genetic differences were observed between sympatric spotty and plain phenotypes in Galicia, but not in Scandinavia. The mechanisms underlying the geographic patterns between phenotypes are discussed, but not identified. We conclude that extensive aquaculture-mediated translocation of ballan wrasse from Sweden and southern Norway to western and middle Norway has the potential to mix genetically distinct populations. These results question the sustainability of the current cleaner fish practice.
Collapse
Affiliation(s)
- Gaute W. Seljestad
- Institute of Marine ResearchBergenNorway
- Department of Biological SciencesUniversity of BergenBergenNorway
| | | | - Ellika Faust
- Department of Marine Sciences—TjärnöUniversity of GothenburgStrömstadSweden
| | - Kim T. Halvorsen
- Institute of Marine ResearchAustevoll Research StationStorebøNorway
| | | | | | - Geir Dahle
- Institute of Marine ResearchBergenNorway
| | - Halvor Knutsen
- Institute of Marine ResearchFlødevigenNorway
- Centre for Coastal ResearchUniversity of AgderKristiansandNorway
| | - Carl André
- Department of Marine Sciences—TjärnöUniversity of GothenburgStrömstadSweden
| | - Arild Folkvord
- Institute of Marine ResearchBergenNorway
- Department of Biological SciencesUniversity of BergenBergenNorway
| | - Kevin A. Glover
- Institute of Marine ResearchBergenNorway
- Department of Biological SciencesUniversity of BergenBergenNorway
| |
Collapse
|
13
|
Barrett LT, Overton K, Stien LH, Oppedal F, Dempster T. Effect of cleaner fish on sea lice in Norwegian salmon aquaculture: a national scale data analysis. Int J Parasitol 2020; 50:787-796. [PMID: 32035989 DOI: 10.1016/j.ijpara.2019.12.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 11/25/2019] [Accepted: 12/03/2019] [Indexed: 11/24/2022]
Abstract
The salmon aquaculture industry has adopted the use of invertivorous 'cleaner fishes' (CF) for biological control of sea louse infestations on farmed salmon. At present, ~50 million CF are used annually in Norway alone, with variable success in experimental and industrial contexts. We used a national scale database of louse counts, delousing treatments and CF stocking events on Norwegian salmon farms to test for evidence of CF efficacy at 488 sites that completed a grow-out cycle within 2016-2018. Our analysis revealed that sites using more CF over the duration of a grow-out cycle did not have fewer lice on average, likely because CF use is reactive and in proportion to the scale of the louse problem. Over time within sites, we found that (i) sites using more CF early in the grow-out cycle were able to wait slightly longer (conservatively, a 5.2 week delay with 5000 CF stocked week-1) before conducting the first delousing treatment, and (ii) CF stocking events were followed, on average, by a small reduction in louse population growth rates. However, both effects were small and highly variable, and louse population growth rates remained positive on average, even when large numbers of CF were used (tens of thousands per site). Moreover, effects of CF on louse density tended to be short-lived, likely reflecting mortality and escape of stocked CF. Overall, the data indicate that while some sites consistently obtain good results from CF, there is also widespread suboptimal use. A better understanding of factors affecting CF efficacy in commercial sea cages is required to inform legislation and drive more efficient and ethical use of CF by the salmon aquaculture industry.
Collapse
Affiliation(s)
- Luke T Barrett
- Sustainable Aquaculture Laboratory - Temperate and Tropical (SALTT), School of BioSciences, University of Melbourne, Victoria 3010, Australia.
| | - Kathy Overton
- Sustainable Aquaculture Laboratory - Temperate and Tropical (SALTT), School of BioSciences, University of Melbourne, Victoria 3010, Australia
| | - Lars H Stien
- Institute of Marine Research, Matre Research Station, 5984 Matredal, Norway
| | - Frode Oppedal
- Institute of Marine Research, Matre Research Station, 5984 Matredal, Norway
| | - Tim Dempster
- Sustainable Aquaculture Laboratory - Temperate and Tropical (SALTT), School of BioSciences, University of Melbourne, Victoria 3010, Australia
| |
Collapse
|
14
|
Mattingsdal M, Jorde PE, Knutsen H, Jentoft S, Stenseth NC, Sodeland M, Robalo JI, Hansen MM, André C, Blanco Gonzalez E. Demographic history has shaped the strongly differentiated corkwing wrasse populations in Northern Europe. Mol Ecol 2019; 29:160-171. [DOI: 10.1111/mec.15310] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 11/06/2019] [Accepted: 11/13/2019] [Indexed: 12/11/2022]
Affiliation(s)
- Morten Mattingsdal
- Department of Natural Sciences Centre for Coastal Research University of Agder Kristiansand Norway
| | | | - Halvor Knutsen
- Department of Natural Sciences Centre for Coastal Research University of Agder Kristiansand Norway
- Institute of Marine Research Flødevigen Norway
| | - Sissel Jentoft
- Department of Biosciences Centre for Ecological and Evolutionary Synthesis University of Oslo Oslo Norway
| | - Nils Christian Stenseth
- Department of Natural Sciences Centre for Coastal Research University of Agder Kristiansand Norway
- Department of Biosciences Centre for Ecological and Evolutionary Synthesis University of Oslo Oslo Norway
| | - Marte Sodeland
- Department of Natural Sciences Centre for Coastal Research University of Agder Kristiansand Norway
| | - Joana I. Robalo
- Marine and Environmental Sciences Centre ISPA Instituto Universitário de Ciências Psicológicas, Sociais e da Vida Lisboa Portugal
| | | | - Carl André
- Department of Marine Sciences‐Tjärnö Göteborg University Strömstad Sweden
| | - Enrique Blanco Gonzalez
- Department of Natural Sciences Centre for Coastal Research University of Agder Kristiansand Norway
- Norwegian College of Fishery Science UiT The Arctic University of Norway Tromsø Norway
| |
Collapse
|
15
|
McMurtrie J, Verner-Jeffreys DW, Cochrane-Dyet T, White P, van Aerle R, Ryder D, Stone D, Green M, Feist SW, Cano I. Health assessment of the cleaner fish ballan wrasse Labrus bergylta from the British south-west coast. DISEASES OF AQUATIC ORGANISMS 2019; 136:133-146. [PMID: 31621646 DOI: 10.3354/dao03394] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Wild-caught ballan wrasse Labrus bergylta are translocated en masse from the British south-west coast to Scotland for use as cleaner fish to tackle Atlantic salmon Salmo salar sea lice infestations; however, very little is known about the background health status of this species. This is the first health assessment of wild ballan wrasse from the British south-west. Wild-caught ballan wrasse (n = 75) from coastal populations off Dorset and Cornwall were subjected to a full health screen for viral, bacterial and parasitic infections and associated pathology. A range of metazoan and protozoan parasites were observed in histological sections, including copepods (sea lice Caligus centrodonti), nematodes, cestodes, digenean metacercariae, Cryptocaryon-like ciliates and an intestinal coccidian (Eimeria sp.) observed in 26.6% of the samples. The mycoplasma Acholeplasma laidlawii was associated with cytopathic effect in cell culture inoculated with tissue homogenates. The opportunistic pathogen Photobacterium damselae damselae was isolated from a single fish with a systemic infection. The isolate was confirmed to possess the virulence factors hlyAch and plpV, previously associated with cell toxicity and pathogenicity to fish. There are no immediate concerns for the continued mass translation of ballan wrasse, however careful monitoring of the population is recommended.
Collapse
Affiliation(s)
- Jamie McMurtrie
- Cefas Weymouth Laboratory, Centre for Environment, Fisheries and Aquaculture Science, Weymouth DT4 8UB, UK
| | | | | | | | | | | | | | | | | | | |
Collapse
|
16
|
Blanco Gonzalez E, Espeland SH, Jentoft S, Hansen MM, Robalo JI, Stenseth NC, Jorde PE. Interbreeding between local and translocated populations of a cleaner fish in an experimental mesocosm predicts risk of disrupted local adaptation. Ecol Evol 2019; 9:6665-6677. [PMID: 31236251 PMCID: PMC6580302 DOI: 10.1002/ece3.5246] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 04/19/2019] [Accepted: 04/23/2019] [Indexed: 12/11/2022] Open
Abstract
Translocation of organisms within or outside its native range carries the risk of modifying the community of the recipient ecosystems and induces gene flow between locally adapted populations or closely related species. In this study, we evaluated the genetic consequences of large-scale translocation of cleaner wrasses that has become a common practice within the salmon aquaculture industry in northern Europe to combat sea lice infestation. A major concern with this practice is the potential for hybridization of escaped organisms with the local, recipient wrasse population, and thus potentially introduce exogenous alleles and breaking down coadapted gene complexes in local populations. We investigated the potential threat for such genetic introgressions in a large seminatural mesocosm basin. The experimental setting represented a simulated translocation of corkwing wrasse (Symphodus melops) that occurs on a large scale in the Norwegian salmon industry. Parentage assignment analysis of mesocosm's offspring revealed 30% (195 out of 651 offspring) interbreeding between the two populations, despite their being genetically (F ST = 0.094, p < 0.05) and phenotypically differentiated. Moreover, our results suggest that reproductive fitness of the translocated western population doubled that of the local southern population. Our results confirm that human translocations may overcome the impediments imposed by natural habitat discontinuities and urge for immediate action to manage the genetic resources of these small benthic wrasses.
Collapse
Affiliation(s)
- Enrique Blanco Gonzalez
- Department of Natural SciencesUniversity of AgderKristiansandNorway
- Centre for Coastal ResearchUniversity of AgderKristiansandNorway
- Norwegian College of Fishery ScienceUiT The Arctic University of NorwayTromsøNorway
| | - Sigurd H. Espeland
- Centre for Coastal ResearchUniversity of AgderKristiansandNorway
- Institute of Marine ResearchFlødevigenNorway
| | - Sissel Jentoft
- Centre for Ecological and Evolutionary Synthesis, Department of BiosciencesUniversity of OsloOsloNorway
| | | | - Joana I. Robalo
- MARE ‐ Marine and Environmental Sciences CentreISPA Instituto Universitário de Ciências Psicológicas, Sociais e da VidaLisboaPortugal
| | - Nils C. Stenseth
- Centre for Coastal ResearchUniversity of AgderKristiansandNorway
- Centre for Ecological and Evolutionary Synthesis, Department of BiosciencesUniversity of OsloOsloNorway
| | | |
Collapse
|
17
|
Perry WB, Solberg MF, Besnier F, Dyrhovden L, Matre IH, Fjelldal PG, Ayllon F, Creer S, Llewellyn M, Taylor MI, Carvalho G, Glover KA. Evolutionary drivers of kype size in Atlantic salmon ( Salmo salar): domestication, age and genetics. ROYAL SOCIETY OPEN SCIENCE 2019; 6:190021. [PMID: 31183145 PMCID: PMC6502380 DOI: 10.1098/rsos.190021] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Accepted: 03/20/2019] [Indexed: 06/09/2023]
Abstract
The diversity of reproduction and associated mating patterns in Atlantic salmon (Salmo salar) has long captivated evolutionary biologists. Salmo salar exhibit strategies involving migration, bold mating behaviours and radical morphological and physiological change. One such radical change is the elongation and curvature of the lower jaw in sexually mature males into a hook-like appendage called the kype. The kype is a secondary sexual characteristic used in mating hierarchies and a prime candidate for sexual selection. As one of the core global aquaculture fish species, however, mate choice, and thus sexual selection, has been replaced by industrial artificial fertilization seeking to develop more commercially viable strains. Removal of mate choice provides a unique opportunity to examine the kype over successive generations in the absence of sexual selection. Here we use a large-scale common-garden experiment, incorporating six experimental strains (wild, farmed and wild × farmed hybrids), experiencing one to three sea winters, to assess the impact of age and genetic background. After controlling for allometry, fork length-adjusted kype height (AKH) was significantly reduced in the domesticated strain in comparison to two wild strains. Furthermore, genetic variation at a locus on linkage group SSA1 was associated with kype height, and a locus on linkage group SSA23 was associated with fork length-adjusted kype length (AKL). The reduction in fork length-AKH in domesticated salmon suggests that the kype is of importance in mate choice and that it has decreased due to relaxation of sexual selection. Fork length-AKL showed an increase in domesticated individuals, highlighting that it may not be an important cue in mate choice. These results give us insight into the evolutionary significance of the kype, as well as implications of genetic induced phenotypic change caused by domesticated individuals escaping into the natural environment.
Collapse
Affiliation(s)
- William Bernard Perry
- Molecular Ecology and Fisheries Genetics Laboratory, School of Natural Sciences, Bangor University, Bangor, Gwynedd LL57 2UW, UK
| | - Monica Favnebøe Solberg
- Population Genetics Research Group, Institute of Marine Research, P.O. Box 1870, Nordnes, NO-5817 Bergen, Norway
| | - Francois Besnier
- Population Genetics Research Group, Institute of Marine Research, P.O. Box 1870, Nordnes, NO-5817 Bergen, Norway
| | - Lise Dyrhovden
- Matre Research Station, Institute of Marine Research, Matredal, Norway
| | - Ivar Helge Matre
- Matre Research Station, Institute of Marine Research, Matredal, Norway
| | - Per Gunnar Fjelldal
- Population Genetics Research Group, Institute of Marine Research, P.O. Box 1870, Nordnes, NO-5817 Bergen, Norway
| | - Fernando Ayllon
- Population Genetics Research Group, Institute of Marine Research, P.O. Box 1870, Nordnes, NO-5817 Bergen, Norway
| | - Simon Creer
- Molecular Ecology and Fisheries Genetics Laboratory, School of Natural Sciences, Bangor University, Bangor, Gwynedd LL57 2UW, UK
| | - Martin Llewellyn
- Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Glasgow G12 8QQ, UK
| | - Martin I. Taylor
- School of Biological Sciences, University of East Anglia, Norwich NR4 7TJ, UK
| | - Gary Carvalho
- Molecular Ecology and Fisheries Genetics Laboratory, School of Natural Sciences, Bangor University, Bangor, Gwynedd LL57 2UW, UK
| | - Kevin Alan Glover
- Population Genetics Research Group, Institute of Marine Research, P.O. Box 1870, Nordnes, NO-5817 Bergen, Norway
- Institute of Biology, University of Bergen, N-5020 Bergen, Norway
| |
Collapse
|
18
|
Genetic heterogeneity of two bioeconomically important kelp species along the Norwegian coast. CONSERV GENET 2019. [DOI: 10.1007/s10592-019-01162-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
19
|
Whittaker BA, Consuegra S, Garcia de Leaniz C. Genetic and phenotypic differentiation of lumpfish ( Cyclopterus lumpus) across the North Atlantic: implications for conservation and aquaculture. PeerJ 2018; 6:e5974. [PMID: 30498640 PMCID: PMC6251346 DOI: 10.7717/peerj.5974] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Accepted: 10/19/2018] [Indexed: 11/20/2022] Open
Abstract
Demand for lumpfish (Cyclopterus lumpus) has increased exponentially over the last decade, both for their roe, which is used as a caviar substitute, and increasingly also as cleaner fish to control sea lice in salmon farming. The species is classified as Near Threatened by the IUCN and there are growing concerns that over-exploitation of wild stocks and translocation of hatchery-reared lumpfish may compromise the genetic diversity of native populations. We carried out a comparative analysis of genetic and phenotypic variation across the species' range to estimate the level of genetic and phenotypic differentiation, and determined patterns of gene flow at spatial scales relevant to management. We found five genetically distinct groups located in the West Atlantic (USA and Canada), Mid Atlantic (Iceland), East Atlantic (Faroe Islands, Ireland, Scotland, Norway and Denmark), English Channel (England) and Baltic Sea (Sweden). Significant phenotypic differences were also found, with Baltic lumpfish growing more slowly, attaining a higher condition factor and maturing at a smaller size than North Atlantic lumpfish. Estimates of effective population size were consistently low across the North East Atlantic (Iceland, Faroe Islands and Norway), the area where most wild lumpfish are fished for their roe, and also for the aquaculture industry. Our study suggests that some lumpfish populations are very small and have low genetic diversity, which makes them particularly vulnerable to over-exploitation and genetic introgression. To protect them we advocate curtailing fishing effort, closing the breeding cycle of the species in captivity to reduce dependence on wild stocks, restricting the translocation of genetically distinct populations, and limiting the risk of farm escapes.
Collapse
Affiliation(s)
- Benjamin Alexander Whittaker
- Department of Biosciences, Centre for Sustainable Aquatic Research, Swansea University, Swansea, Wales, United Kingdom
| | - Sofia Consuegra
- Department of Biosciences, Centre for Sustainable Aquatic Research, Swansea University, Swansea, Wales, United Kingdom
| | - Carlos Garcia de Leaniz
- Department of Biosciences, Centre for Sustainable Aquatic Research, Swansea University, Swansea, Wales, United Kingdom
| |
Collapse
|
20
|
Näslund J, Lundgren M. Mapping the distribution of scale-rayed wrasse Acantholabrus palloni in Swedish Skagerrak using angling records. PeerJ 2018; 6:e5900. [PMID: 30416890 PMCID: PMC6225840 DOI: 10.7717/peerj.5900] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 10/02/2018] [Indexed: 11/20/2022] Open
Abstract
In this paper, we map the distribution of scale-rayed wrasse Acantholabrus palloni in eastern Skagerrak based on a combination of verified and personally communicated angling records. Long thought to be occasional vagrants outside its known range in the eastern Atlantic Ocean and Mediterranean Sea, we ask if this rare and understudied labrid has expanded its range and become established in Swedish waters. A recent surge in verified angling records in the Swedish Anglers Association's specimen database Storfiskregistret provides information to suggest that this species should no longer be considered an occasional guest, but rather a species established in the Swedish parts of Skagerrak. These records are supported by additional personal communications with anglers. The species is currently well spread geographically along the Swedish Skagerrak coast, with many locations providing repeated captures of adult fish over multiple years. The typical Swedish catch sites are rocky reefs located between the general 40- and 80-m depth curves, likely influenced by currents bringing higher-salinity water from the North Sea. The present study show that angling records can provide an important, but underutilized, resource for mapping the distribution of data-deficient fish species.
Collapse
Affiliation(s)
- Joacim Näslund
- Department of Zoology, Stockholm University, Stockholm, Sweden
| | | |
Collapse
|
21
|
A continuous genome assembly of the corkwing wrasse (Symphodus melops). Genomics 2018; 110:399-403. [DOI: 10.1016/j.ygeno.2018.04.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Revised: 04/06/2018] [Accepted: 04/10/2018] [Indexed: 12/20/2022]
|