1
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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] [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.
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Affiliation(s)
- Kerstin Johannesson
- Tjärnö Marine Laboratory, Department of Marine Sciences University of Gothenburg Strömstad Sweden
| | - Erica H Leder
- Tjärnö Marine Laboratory, Department of Marine Sciences University of Gothenburg Strömstad Sweden.,Natural History Museum University of Oslo Oslo Norway
| | - Carl André
- Tjärnö Marine Laboratory, Department of Marine Sciences University of Gothenburg Strömstad Sweden
| | - Sam Dupont
- Department of Biology and Environmental Science University of Gothenburg, Kristineberg Marine Research Station Fiskebäckskil Sweden.,International Atomic Energy Agency Principality of Monaco Monaco
| | - Susanne P Eriksson
- Department of Biology and Environmental Science University of Gothenburg, Kristineberg Marine Research Station Fiskebäckskil Sweden
| | - Karin Harding
- Department of Biology and Environmental Science University of Gothenburg Gothenburg Sweden
| | - Jonathan N Havenhand
- Tjärnö Marine Laboratory, Department of Marine Sciences University of Gothenburg Strömstad Sweden
| | - Marlene Jahnke
- Tjärnö Marine Laboratory, Department of Marine Sciences University of Gothenburg Strömstad Sweden
| | - Per R Jonsson
- Tjärnö Marine Laboratory, Department of Marine Sciences University of Gothenburg Strömstad Sweden
| | - Charlotta Kvarnemo
- Department of Biology and Environmental Science University of Gothenburg Gothenburg Sweden
| | - Henrik Pavia
- Tjärnö Marine Laboratory, Department of Marine Sciences University of Gothenburg Strömstad Sweden
| | - Marina Rafajlović
- Department of Marine Sciences University of Gothenburg Gothenburg Sweden
| | - Eva Marie Rödström
- Tjärnö Marine Laboratory, Department of Marine Sciences University of Gothenburg Strömstad Sweden
| | - Michael Thorndyke
- Department of Biology and Environmental Science University of Gothenburg, Kristineberg Marine Research Station Fiskebäckskil Sweden.,Department of Genomics Research in Ecology & Evolution in Nature (GREEN) Groningen Institute for Evolutionary Life Sciences (GELIFES) De Rijksuniversiteit Groningen Groningen The Netherlands
| | - Anders Blomberg
- Department of Chemistry and Molecular Biology University of Gothenburg Gothenburg Sweden
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2
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Klug H, Langley C, Reyes E. Resource acquisition and pre-copulatory sexual selection. Ecol Evol 2022; 12:e9137. [PMID: 35898422 PMCID: PMC9309035 DOI: 10.1002/ece3.9137] [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: 02/22/2022] [Revised: 06/27/2022] [Accepted: 07/01/2022] [Indexed: 11/30/2022] Open
Abstract
Sexual selection influences the evolution of phenotypic traits and contributes to patterns of biodiversity. In many animals, mating involves sequential steps. Often, individuals must secure resources that are essential for mating (nests, territories, food), and then after securing a resource, individuals engage in competition for access to limited opposite sex mates and gametes. A large body of empirical research and some verbal models have illustrated that resource acquisition can influence sexual selection. In general, though, we lack a priori predictions of when and how resource acquisition will influence sexual selection. Here, we use a mathematical framework to explore the link between resource acquisition and sexual selection on an advantageous mate‐acquisition trait across biologically relevant trade‐off scenarios. Our findings provide a set of testable predictions of how resource acquisition can influence sexual selection on mating traits. In general, selection on mate‐acquisition traits is expected to be heavily influenced by: (1) the episode of selection considered, and in particular, whether one considers selection associated with the mating pool only or selection associated with both the mating pool and pre‐mating pool; (2) whether resource‐acquisition and mate‐acquisition traits are positively associated or whether they trade off; and (3) the proportion of males with the resource‐ and mate‐acquisition traits.
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Affiliation(s)
- Hope Klug
- Department of Biology, Geology, and Environmental Science University of Tennessee at Chattanooga Chattanooga Tennessee USA.,SimCenter University of Tennessee at Chattanooga Chattanooga Tennessee USA
| | - Chelsea Langley
- Department of Biology, Geology, and Environmental Science University of Tennessee at Chattanooga Chattanooga Tennessee USA
| | - Elijah Reyes
- Department of Biological Sciences Simon Fraser University Burnaby British Columbia Canada
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3
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Lindström K, Havenhand J, Leder E, Schöld S, Svensson O, Kvarnemo C. Sperm adaptation in relation to salinity in three goby species. JOURNAL OF FISH BIOLOGY 2021; 99:607-613. [PMID: 33878216 DOI: 10.1111/jfb.14749] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Revised: 03/24/2021] [Accepted: 04/04/2021] [Indexed: 06/12/2023]
Abstract
In externally fertilizing species, the gametes of both males and females are exposed to the influences of the environment into which they are released. Sperm are sensitive to abiotic factors such as salinity, but they are also affected by biotic factors such as sperm competition. In this study, the authors compared the performance of sperm of three goby species, the painted goby, Pomatoschistus pictus, the two-spotted goby, Pomatoschistus flavescens, and the sand goby, Pomatoschistus minutus. These species differ in their distributions, with painted goby having the narrowest salinity range and sand goby the widest. Moreover, data from paternity show that the two-spotted goby experiences the least sperm competition, whereas in the sand goby sperm competition is ubiquitous. The authors took sperm samples from dissected males and exposed them to high salinity water (31 PSU) representing the North Sea and low salinity water (6 PSU) representing the brackish Baltic Sea Proper. They then used computer-assisted sperm analysis to measure the proportion of motile sperm and sperm swimming speed 10 min and 20 h after sperm activation. The authors found that sperm performance depended on salinity, but there seemed to be no relationship to the species' geographical distribution in relation to salinity range. The species differed in the proportion of motile sperm, but there was no significant decrease in sperm motility during 20 h. The sand goby was the only species with motile sperm after 72 h.
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Affiliation(s)
- Kai Lindström
- Environmental and Marine Biology, Åbo Akademi University, Turku, Finland
| | - Jonathan Havenhand
- Tjärnö Marine Laboratory, Department of Marine Sciences, University of Gothenburg, Strömstad, Sweden
- Centre for Marine Evolutionary Biology, University of Gothenburg, Gothenburg, Sweden
| | - Erica Leder
- Tjärnö Marine Laboratory, Department of Marine Sciences, University of Gothenburg, Strömstad, Sweden
- Department of Biology, University of Turku, Turku, Finland
- Natural History Museum, University of Oslo, Oslo, Norway
| | - Sofie Schöld
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
| | - Ola Svensson
- Centre for Marine Evolutionary Biology, University of Gothenburg, Gothenburg, Sweden
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
- Department for Pre-School and School Teacher Education, University of Borås, Borås, Sweden
| | - Charlotta Kvarnemo
- Centre for Marine Evolutionary Biology, University of Gothenburg, Gothenburg, Sweden
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
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4
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Green L, Niemax J, Herrmann J, Temming A, Kvarnemo C. Alternative reproductive tactics are associated with sperm performance in invasive round goby from two different salinity environments. Ecol Evol 2020; 10:9981-9999. [PMID: 33005358 PMCID: PMC7520214 DOI: 10.1002/ece3.6657] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 07/16/2020] [Accepted: 07/20/2020] [Indexed: 12/27/2022] Open
Abstract
During male-male competition, evolution can favor alternative reproductive tactics. This often results in a dominant morph that holds a resource, such as a nest for egg laying, which competes with a smaller sneaker morph that reproduces by stealing fertilizations. The salinity environment can influence male growth rates, for example, via osmoregulatory costs, which in turn may influence the use of sneaker tactics for small males competing for mating opportunities. Salinity can also affect sperm directly; however, little is known of how salinity influences sneaker tactics through sperm performance. We sampled males of the invasive round goby (Neogobius melanostomus) from two environments, a freshwater river and a brackish estuary. This fish has two male morphs: nest-holding dark males and non-nest-holding light males. We examined the role of water salinity of 0, 8, and 16 on sperm performance and found that for estuarine males, a salinity of 0 reduced sperm velocity compared to a salinity of 8 and 16. Riverine males had low velocity in all salinities. Sperm viability also decreased by over 30% in 0 salinity, compared to 8 and 16, for fish from both environments. Gobies produce ejaculate contents in specialized glands that could in theory shield sperm in an adverse environment. However, gland contents did not improve sperm performance in our tests. Body mass and age estimates indicate that riverine males invested more in somatic growth compared to estuarine males. Estuarine light morph males had a high enough gonadosomatic index to indicate sneaker tactics. We propose that when sperm performance is low, such as for the riverine males, sneaker tactics are ineffective and will be selected against or phenotypically suppressed. Instead, we interpret the increased investment in somatic growth found in riverine males as a life-history decision that is advantageous when defending a nest in the next reproductive season.
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Affiliation(s)
- Leon Green
- Department of Biological and Environmental SciencesUniversity of GothenburgGothenburgSweden
- Linnaeus Centre for Evolutionary Marine BiologyUniversity of GothenburgGothenburgSweden
| | - Jan Niemax
- Department of BiologyInstitute of Marine Ecosystem and Fishery ScienceUniversity of HamburgHamburgGermany
| | - Jens‐Peter Herrmann
- Department of BiologyInstitute of Marine Ecosystem and Fishery ScienceUniversity of HamburgHamburgGermany
| | - Axel Temming
- Department of BiologyInstitute of Marine Ecosystem and Fishery ScienceUniversity of HamburgHamburgGermany
| | - Charlotta Kvarnemo
- Department of Biological and Environmental SciencesUniversity of GothenburgGothenburgSweden
- Linnaeus Centre for Evolutionary Marine BiologyUniversity of GothenburgGothenburgSweden
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5
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Leder EH, André C, Le Moan A, Töpel M, Blomberg A, Havenhand JN, Lindström K, Volckaert FAM, Kvarnemo C, Johannesson K, Svensson O. Post-glacial establishment of locally adapted fish populations over a steep salinity gradient. J Evol Biol 2020; 34:138-156. [PMID: 32573797 DOI: 10.1111/jeb.13668] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Accepted: 06/04/2020] [Indexed: 12/21/2022]
Abstract
Studies of colonization of new habitats that appear from rapidly changing environments are interesting and highly relevant to our understanding of divergence and speciation. Here, we analyse phenotypic and genetic variation involved in the successful establishment of a marine fish (sand goby, Pomatoschistus minutus) over a steep salinity drop from 35 PSU in the North Sea (NE Atlantic) to two PSU in the inner parts of the post-glacial Baltic Sea. We first show that populations are adapted to local salinity in a key reproductive trait, the proportion of motile sperm. Thereafter, we show that genome variation at 22,190 single nucleotide polymorphisms (SNPs) shows strong differentiation among populations along the gradient. Sequences containing outlier SNPs and transcriptome sequences, mapped to a draft genome, reveal associations with genes with relevant functions for adaptation in this environment but without overall evidence of functional enrichment. The many contigs involved suggest polygenic differentiation. We trace the origin of this differentiation using demographic modelling and find the most likely scenario is that at least part of the genetic differentiation is older than the Baltic Sea and is a result of isolation of two lineages prior to the current contact over the North Sea-Baltic Sea transition zone.
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Affiliation(s)
- Erica H Leder
- Centre for Marine Evolutionary Biology, University of Gothenburg, Gothenburg, Sweden.,Department of Biology, University of Turku, Turku, Finland.,Natural History Museum, University of Oslo, Oslo, Norway
| | - Carl André
- Centre for Marine Evolutionary Biology, University of Gothenburg, Gothenburg, Sweden.,Tjärnö Marine Laboratory, Department of Marine Sciences, University of Gothenburg, Strömstad, Sweden
| | - Alan Le Moan
- Centre for Marine Evolutionary Biology, University of Gothenburg, Gothenburg, Sweden.,Tjärnö Marine Laboratory, Department of Marine Sciences, University of Gothenburg, Strömstad, Sweden
| | - Mats Töpel
- Centre for Marine Evolutionary Biology, University of Gothenburg, Gothenburg, Sweden.,Department of Marine Sciences, University of Gothenburg, Gothenburg, Sweden
| | - Anders Blomberg
- Centre for Marine Evolutionary Biology, University of Gothenburg, Gothenburg, Sweden.,Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg, Sweden
| | - Jonathan N Havenhand
- Centre for Marine Evolutionary Biology, University of Gothenburg, Gothenburg, Sweden.,Tjärnö Marine Laboratory, Department of Marine Sciences, University of Gothenburg, Strömstad, Sweden
| | - Kai Lindström
- Environmental and Marine Biology, Åbo Akademi University, Turku, Finland
| | - Filip A M Volckaert
- Centre for Marine Evolutionary Biology, University of Gothenburg, Gothenburg, Sweden.,Laboratory of Biodiversity and Evolutionary Genomics, KU Leuven, Leuven, Belgium
| | - Charlotta Kvarnemo
- Centre for Marine Evolutionary Biology, University of Gothenburg, Gothenburg, Sweden.,Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
| | - Kerstin Johannesson
- Centre for Marine Evolutionary Biology, University of Gothenburg, Gothenburg, Sweden.,Tjärnö Marine Laboratory, Department of Marine Sciences, University of Gothenburg, Strömstad, Sweden
| | - Ola Svensson
- Centre for Marine Evolutionary Biology, University of Gothenburg, Gothenburg, Sweden.,Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden.,Department for Pre-School and School Teacher Education, University of Borås, Borås, Sweden
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6
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Green L, Kvarnemo C. Sperm-duct gland content increases sperm velocity in the sand goby. Biol Open 2019; 8:bio037994. [PMID: 30837224 PMCID: PMC6451343 DOI: 10.1242/bio.037994] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Accepted: 02/20/2019] [Indexed: 12/02/2022] Open
Abstract
Sperm performance is often tightly linked to male reproductive success. In many demersal gobiid fishes, the male attaches sperm embedded in a mucus produced by sperm-duct glands to the nest substrate before spawning takes place. Sperm are activated as the mucus and embedded gland content dissolve into the water. To test the importance of gland content on sperm function in Pomatoschistus minutus, a marine fish with external fertilization, we used a paired experimental design, with spermatozoa tested with and without sperm-duct gland content mixed into seawater. We measured sperm velocity, percentage of motile sperm and sperm viability over time. Sperm were found to swim 7.3% faster when gland content was mixed in the seawater. Percentage motile sperm was unaffected by the gland content. Sperm viability in seawater exceeded 24 h, but was unaffected by the gland content. An increase in sperm velocity of similar magnitude as found here has been shown by others to increase fertilization success. Since velocity-boosting properties of sperm-duct gland content have now been found in three distantly related goby species, this trait appears to be conserved across the Gobiidae family and may aid in reproduction across a range of species and environments.This article has an associated First Person interview with the first author of the paper.
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Affiliation(s)
- Leon Green
- Department of Biological and Environmental Sciences, University of Gothenburg, Box 463, SE-405 30 Göteborg, Sweden
- The Linnaeus Centre for Marine Evolutionary Biology, University of Gothenburg, SE-405 30 Gothenburg, Sweden
| | - Charlotta Kvarnemo
- Department of Biological and Environmental Sciences, University of Gothenburg, Box 463, SE-405 30 Göteborg, Sweden
- The Linnaeus Centre for Marine Evolutionary Biology, University of Gothenburg, SE-405 30 Gothenburg, Sweden
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7
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Wong BBM, Lehtonen TK, Lindström K. Spatial and temporal patterns of nest distribution influence sexual selection in a marine fish. OIKOS 2018. [DOI: 10.1111/oik.05058] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bob B. M. Wong
- School of Biological Sciences Monash Univ. Victoria Australia
- Dept of Biosciences Univ. of Helsinki Helsinki Finland
| | - Topi K. Lehtonen
- School of Biological Sciences Monash Univ. Victoria Australia
- Dept of Biosciences Univ. of Helsinki Helsinki Finland
| | - Kai Lindström
- Environmental and Marine Biology Åbo Akademi Univ. FI–20520 Turku Finland
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8
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Lehtonen TK, Vesakoski O, Yli-Rosti J, Saarinen A, Lindström K. The impact of an invasive mud crab on brood success of nest-building fish in the Northern Baltic Sea. Biol Invasions 2017. [DOI: 10.1007/s10530-017-1605-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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9
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Anthes N, Häderer IK, Michiels NK, Janicke T. Measuring and interpreting sexual selection metrics: evaluation and guidelines. Methods Ecol Evol 2016. [DOI: 10.1111/2041-210x.12707] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Nils Anthes
- Animal Evolutionary Ecology Group Institute for Evolution and Ecology University of Tübingen Auf der Morgenstelle 28 72076 Tübingen Germany
| | - Ines K. Häderer
- Animal Evolutionary Ecology Group Institute for Evolution and Ecology University of Tübingen Auf der Morgenstelle 28 72076 Tübingen Germany
| | - Nico K. Michiels
- Animal Evolutionary Ecology Group Institute for Evolution and Ecology University of Tübingen Auf der Morgenstelle 28 72076 Tübingen Germany
| | - Tim Janicke
- Centre d'Écologie Fonctionnelle et Évolutive UMR 5175 CNRS University of Montpellier 1919 Route de Mende 34293 Montpellier Cedex 05 France
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10
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Muniz DG, Machado G. Experimental limitation of oviposition sites affects the mating system of an arachnid with resource defence polygyny. Anim Behav 2015. [DOI: 10.1016/j.anbehav.2015.08.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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11
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Infections may select for filial cannibalism by impacting egg survival in interactions with water salinity and egg density. Oecologia 2015; 178:673-83. [DOI: 10.1007/s00442-015-3246-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2014] [Accepted: 01/19/2015] [Indexed: 10/24/2022]
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12
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Cogliati KM, Mistakidis AF, Marentette JR, Lau A, Bolker BM, Neff BD, Balshine S. Comparing population level sexual selection in a species with alternative reproductive tactics. Behav Ecol 2014. [DOI: 10.1093/beheco/aru147] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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13
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Filial cannibalism in a nest-guarding fish: females prefer to spawn in nests with few eggs over many. Behav Ecol Sociobiol 2014. [DOI: 10.1007/s00265-014-1766-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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14
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Teichert N, Keith P, Valade P, Richarson M, Metzger M, Gaudin P. Breeding pattern and nest guarding in Sicyopterus lagocephalus, a widespread amphidromous Gobiidae. J ETHOL 2013. [DOI: 10.1007/s10164-013-0372-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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15
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Schlicht E, Kempenaers B. EFFECTS OF SOCIAL AND EXTRA-PAIR MATING ON SEXUAL SELECTION IN BLUE TITS (CYANISTES CAERULEUS). Evolution 2013; 67:1420-34. [DOI: 10.1111/evo.12073] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2011] [Accepted: 02/03/2013] [Indexed: 11/29/2022]
Affiliation(s)
- Emmi Schlicht
- Department Behavioural Ecology and Evolutionary Genetics, Max Planck Institute for Ornithology; Eberhard-Gwinner-Straße; 82319 Seewiesen; Germany
| | - Bart Kempenaers
- Department Behavioural Ecology and Evolutionary Genetics, Max Planck Institute for Ornithology; Eberhard-Gwinner-Straße; 82319 Seewiesen; Germany
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16
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17
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Takegaki T, Svensson O, Kvarnemo C. Socially induced tactic change in 2 types of sand goby sneaker males. Behav Ecol 2012. [DOI: 10.1093/beheco/ars022] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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18
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Streatfeild CA, Mabry KE, Keane B, Crist TO, Solomon NG. Intraspecific variability in the social and genetic mating systems of prairie voles, Microtus ochrogaster. Anim Behav 2011. [DOI: 10.1016/j.anbehav.2011.09.023] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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19
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Changes in reproductive life-history strategies in response to nest density in a shell-brooding cichlid, Telmatochromis vittatus. Naturwissenschaften 2011; 99:23-31. [PMID: 22089034 DOI: 10.1007/s00114-011-0864-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2011] [Revised: 10/31/2011] [Accepted: 11/03/2011] [Indexed: 10/15/2022]
Abstract
To determine whether the appearance of a reproductively parasitic tactic varies, and how this variation affects territorial males of the Lake Tanganyika cichlid fish Telmatochromis vittatus, we examined the reproductive ecology of territorial males in Mtondwe and compared it with that of a neighboring Wonzye population, where nest density differs from that at Mtondwe. In Wonzye, with high nest density, male tactics change with their body size from a territorial to a non-territorial parasitic tactic called piracy in which they conquer several nests defended by territorial males and take over the nests while females are spawning. These "pirate" males could decrease the costs incurred by travelling among nests by exclusively targeting aggregations of nests in close proximity while avoiding separate nests. Territorial males in Wonzye sacrifice the potential higher attractiveness offered by large nests and instead compete for nests farther from neighbors on which pirates less frequently intrude. In contrast, the Mtondwe population had lower nest density and piracy was absent. Given that the success of piracy depends on the close proximity of nests, nest density is likely responsible for the observed variation in the occurrence of piracy between the two populations. Furthermore, in Mtondwe, territorial males competed for larger nests and were smaller than the territorial males in Wonzye. Thus, this lower nest density may free territorial males from the selection pressures for increased size caused by both defense against nest piracy and the need to develop into pirates as they grow.
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20
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Sefc KM. Mating and Parental Care in Lake Tanganyika's Cichlids. INTERNATIONAL JOURNAL OF EVOLUTIONARY BIOLOGY 2011; 2011:470875. [PMID: 21822482 PMCID: PMC3142683 DOI: 10.4061/2011/470875] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/30/2010] [Revised: 03/22/2011] [Accepted: 05/02/2011] [Indexed: 11/20/2022]
Abstract
Cichlid fishes of Lake Tanganyika display a variety of mating and parental care behaviors, including polygamous and monogamous mouthbrooding and substrate breeding, cooperative breeding, as well as various alternative reproductive tactics such as sneaking and piracy. Moreover, reproductive behaviors sometimes vary within species both in space and in time. Here, I survey reports on mating and parenting behaviors of Lake Tanganyika cichlid species and address the evolution of mating and parental care patterns and sexual dimorphism. Notes on measures of sexual selection intensity and the difficulties of defining mating systems and estimating selection intensities at species level conclude the essay.
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Affiliation(s)
- Kristina M. Sefc
- Department of Zoology, Karl-Franzens University Graz, Universitätsplatz 2, 8010 Graz, Austria
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21
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Järvi-Laturi M, Lindström K, Kvarnemo C, Svensson O. Sand goby males trade off between defence against egg predators and sneak intrusions. J Zool (1987) 2011. [DOI: 10.1111/j.1469-7998.2011.00788.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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22
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Klug H, Lindström K, Kokko H. Who to include in measures of sexual selection is no trivial matter. Ecol Lett 2010; 13:1094-102. [DOI: 10.1111/j.1461-0248.2010.01495.x] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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23
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Kvarnemo C, Svensson O, Manson W. Investment in testes, sperm-duct glands and lipid reserves differs between male morphs but not between early and late breeding season in Pomatoschistus minutus. JOURNAL OF FISH BIOLOGY 2010; 76:1609-1625. [PMID: 20557619 DOI: 10.1111/j.1095-8649.2010.02587.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
This study of the sand goby Pomatoschistus minutus, a nest-holding fish with paternal care, focused on gonadal investment among males of different sizes collected early and late in the breeding season. All males caught at the nest had breeding colour, whereas trawl-caught fish consisted of males both with and without colour. The absence or presence of breeding colour was a good predictor of testes investment. Compared to males with breeding colour, males without colour were smaller in body size but had extraordinarily large testes. In absolute terms, testes mass of males without breeding colour was on average 3.4 times greater than those of males with breeding colour. Since small colourless males are known to reproduce as sneaker males, this heavy investment in testes probably reflects that they are forced to spawn under sperm competition. Contrary to testes size, sperm-duct glands were largest among males with breeding colour. These glands produce mucins used for making sperm-containing mucous trails that males place in the nest before and during spawning. Since both sneakers and nest-holders potentially could benefit from having large glands, this result is intriguing. Yet, high mucus production may be more important for nest-holders, because it also protects developing embryos from infections. There was no significant effect of season on body size, testes or sperm-duct glands size, but colourless males tended to be less common late in the season. Possibly this may indicate that individual small colourless males develop into their more colourful counterparts within the breeding season.
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Affiliation(s)
- C Kvarnemo
- Department of Zoology, Stockholm University, SE-106 91 Stockholm, Sweden.
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Abstract
Sexual selection can explain major micro- and macro-evolutionary patterns. Much of current theory predicts that the strength of sexual selection (i) is driven by the relative abundance of males and females prepared to mate (i.e. the operational sex ratio, OSR) and (ii) can be generally estimated by calculating intra-sexual variation in mating success (e.g. the opportunity for sexual selection, I(s)). Here, we demonstrate the problematic nature of these predictions. The OSR and I(s) only accurately predict sexual selection under a limited set of circumstances, and more specifically, only when mate monopolization is extremely strong. If mate monopolization is not strong, using OSR or I(s) as proxies or measures of sexual selection is expected to produce spurious results that lead to the false conclusion that sexual selection is strong when it is actually weak. These findings call into question the validity of empirical conclusions based on these measures of sexual selection.
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Affiliation(s)
- H Klug
- Department of Biological and Environmental Science, University of Helsinki, Finland.
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Haesler MP, Lindeyer CM, Taborsky M. Reproductive parasitism: male and female responses to conspecific and heterospecific intrusions at spawning in a mouth-brooding cichlid Ophthalmotilapia ventralis. JOURNAL OF FISH BIOLOGY 2009; 75:1845-1856. [PMID: 20738652 DOI: 10.1111/j.1095-8649.2009.02442.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
A rare form of alternative reproductive behaviour without simultaneous parasitic spawning was observed in Ophthalmotilapia ventralis, a lekking mouth-brooding cichlid from Lake Tanganyika. Floater males attempted to sneak opportunistically into the territory to actively court the female, while the owner (bourgeois male) defended the territory against other potential intruders. Floater males had more body fat than territory owners and generally higher condition factors. In field experiments, the response of bourgeois males and courted females was tested towards floaters and egg predators (a catfish Synodontis multipunctatus) present in the territories. Territory owners responded aggressively particularly to floaters, and female responsiveness to bourgeois male courtship tended to decline when floaters were present. The potential influence of reproductive parasitism on sexual selection in mouth-brooding cichlids is discussed.
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Affiliation(s)
- M P Haesler
- Division of Behavioural Ecology, Department of Aquatic Ecology and Macroevolution, Institute of Ecology and Evolution, University of Bern, Wohlenstrasse 50a, CH-3032 Hinterkappelen, Switzerland.
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SEFC KM, HERMANN CM, KOBLMÜLLER S. Mating system variability in a mouthbrooding cichlid fish from a tropical lake. Mol Ecol 2009; 18:3508-17. [DOI: 10.1111/j.1365-294x.2009.04295.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Olsson KH, Kvarnemo C, Svensson O. Relative costs of courtship behaviours in nest-building sand gobies. Anim Behav 2009. [DOI: 10.1016/j.anbehav.2008.10.021] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Reichard M, Ondračková M, Bryjová A, Smith C, Bryja J. BREEDING RESOURCE DISTRIBUTION AFFECTS SELECTION GRADIENTS ON MALE PHENOTYPIC TRAITS: EXPERIMENTAL STUDY ON LIFETIME REPRODUCTIVE SUCCESS IN THE BITTERLING FISH (RHODEUS AMARUS). Evolution 2009; 63:377-90. [DOI: 10.1111/j.1558-5646.2008.00572.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Mobley KB, Amundsen T, Forsgren E, Svensson PA, Jones AG. Multiple mating and a low incidence of cuckoldry for nest-holding males in the two-spotted goby, Gobiusculus flavescens. BMC Evol Biol 2009; 9:6. [PMID: 19133131 PMCID: PMC2631507 DOI: 10.1186/1471-2148-9-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2008] [Accepted: 01/08/2009] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND A major question in behavioural ecology concerns the relationship between genetic mating systems and the strength of sexual selection. In this study, we investigated the genetic mating system of the two-spotted goby (Gobiusculus flavescens), a useful fish model for the study of sexual selection whose genetic mating system remains uncharacterized. We developed four polymorphic microsatellite markers and used them to conduct parentage analyses on 21 nests collected during the breeding season to examine the rates of multiple mating by males and to test for evidence of alternative mating strategies. RESULTS Results of this study indicate that male G. flavescens mate with multiple females and enjoy confidence of paternity. We detected only one instance of sneaking, so cuckoldry contributed a very small percentage (approximately 0.1%) of the total fertilizations in this population. Nests were nearly full and males that maintain larger nests have higher mating and reproductive success, irrespective of body size. CONCLUSION Overall, our investigation shows that G. flavescens is similar to other, related gobies in that the nests of care-giving males often contain eggs from multiple females. However, G. flavescens differs from other gobies in displaying an extremely low rate of cuckoldry. The study of ecological factors responsible for this important difference between G. flavescens and related species should be a fertile area for future work.
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Affiliation(s)
- Kenyon B Mobley
- Department of Biology, Texas A&M University, 3258 TAMU, College Station, TX 77843, USA
- Department of Biology, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway
| | - Trond Amundsen
- Department of Biology, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway
| | - Elisabet Forsgren
- Department of Biology, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway
- Norwegian Institute for Nature Research, NO-7485 Trondheim, Norway
| | - Per A Svensson
- Department of Biology, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway
- School of Biological Sciences, Monash University, Melbourne, VIC 3800, Australia
| | - Adam G Jones
- Department of Biology, Texas A&M University, 3258 TAMU, College Station, TX 77843, USA
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Cannibalize or care? The role of perceived paternity in the sand goby, Pomatoschistus minutus. Behav Ecol Sociobiol 2008. [DOI: 10.1007/s00265-008-0576-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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SEFC KRISTINAM, MATTERSDORFER KARIN, STURMBAUER CHRISTIAN, KOBLMÜLLER STEPHAN. High frequency of multiple paternity in broods of a socially monogamous cichlid fish with biparental nest defence. Mol Ecol 2008; 17:2531-43. [DOI: 10.1111/j.1365-294x.2008.03763.x] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Parasitic spawning in sand gobies: an experimental assessment of nest-opening size, sneaker male cues, paternity, and filial cannibalism. Behav Ecol 2007. [DOI: 10.1093/beheco/arl098] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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