Implications of size‐selective fisheries on sexual selection
Uusi-Heikkilä, S. (2020). Implications of size‐selective fisheries on sexual selection. Evolutionary Applications, 13(6), 1487-1500. https://doi.org/10.1111/eva.12988
Published inEvolutionary Applications
© 2020 The Authors. Evolutionary Applications published by John Wiley & Sons Ltd.
Fisheries often combine high mortality with intensive size‐selectivity and can, thus, be expected to reduce body size and size variability in exploited populations. In many fish species, body size is a sexually selected trait and plays an important role in mate choice and mate competition. Large individuals are often preferred as mates due to the high fecundity and resources they can provide to developing offspring. Large fish are also successful in competition for mates. Fisheries‐induced reductions in size and size variability can potentially disrupt mating systems and lower average reproductive success by decreasing opportunities for sexual selection. By reducing population sizes, fisheries can also lead to an increased level of inbreeding. Some fish species avoid reproducing with kin and a high level of relatedness in a population can further disrupt mating systems. Reduced body size and size variability can force fish to change their mate preferences or reduce their choosiness. If mate preference is genetically determined, the adaptive response to fisheries‐induced changes in size and size variability might not occur rapidly. However, much evidence exists for plastic adjustments of mate choice, suggesting that fish might respond flexibly to changes in their social environment. Here, I first discuss how reduced average body size and size variability in exploited populations might affect mate choice and mate competition. I then consider the effects of sex‐biased fisheries on mating systems. Finally, I contemplate the possible effects of inbreeding on mate choice and reproductive success and discuss how mate choice might evolve in exploited populations. Currently, little is known about the mating systems of non‐model species and about the interplay between size‐selective fisheries and sexual selection. Future studies should focus on how reduced size and size variability and increased inbreeding affect fish mating systems, how persistent these effects are, and how this might in turn affect population demography. ...
Publication in research information system
MetadataShow full item record
Related funder(s)Academy of Finland
Funding program(s)Research costs of Academy Research Fellow, AoF; Research post as Academy Research Fellow, AoF
Additional information about fundingAcademy of Finland provided funding.
Showing items with similar title or keywords.
Sbragaglia, Valerio; Alós, Josep; Fromm, Kim; Monk, Christopher T.; Díaz-Gil, Carlos; Uusi-Heikkilä, Silva; Honsey, Andrew E.; Wilson, Alexander D.M.; Arlinghaus, Robert (John Wiley & Sons Ltd., 2019)In most fisheries, larger fish experience substantially higher mortality than smaller fish. Body length, life-history and behavioral traits often correlate, such that fisheries-induced changes in size or life-history can ...
Implications of fisheries‐induced evolution for population recovery : Refocusing the science and refining its communication Hutchings, Jeffrey A.; Kuparinen, Anna (John Wiley & Sons, 2020)The argument that sufficiently high fishing mortality (selective or not) can effect genetic change in fished populations has gained considerable traction since the late 1970s. The intervening decades have provided compelling ...
The relative roles of natural and sexual selection in the evolution of tardigrade gamete morphology Ryndov, Serge (2021)Siittiösolut ovat eläinkunnassa esiintyvistä solutyypeistä monimuotoisin ryhmä. Siittiösoluissa esiintyvän muuntelun on useissa eläintaksoneissa havaittu olevan yhteydessä parittelun jälkeisen seksuaalivalinnan tasoon sekä ...
Jusufovski, Dunja; Saavedra, Camilo; Kuparinen, Anna (Inter-Research Science Publisher, 2019)Competitive interactions between marine mammals and fisheries represent some of the most complex challenges in marine resource management worldwide. The development of commercial fisheries and recovering marine mammal ...
Size-selective harvesting fosters adaptations in mating behavior and reproductive allocation, affecting sexual selection in fish Sbragaglia, Valerio; Gliese, Catalina; Bierbach, David; Honsey, Andrew E.; Uusi-Heikkilä, Silva; Arlinghaus, Robert (Wiley-Blackwell Publishing Ltd., 2019)The role of sexual selection in the context of harvest‐induced evolution is poorly understood. However, elevated and trait‐selective harvesting of wild populations may change sexually selected traits, which in turn can ...