Size-selective harvesting fosters adaptations in mating behavior and reproductive allocation, affecting sexual selection in fish
Sbragaglia, V., Gliese, C., Bierbach, D., Honsey, A. E., Uusi-Heikkilä, S., & Arlinghaus, R. (2019). Size-selective harvesting fosters adaptations in mating behavior and reproductive allocation, affecting sexual selection in fish. Journal of Animal Ecology, 88 (9), 1343-1354. doi:10.1111/1365-2656.13032
Published in
Journal of Animal EcologyAuthors
Date
2019Discipline
Akvaattiset tieteetCopyright
© 2019 The Authors, Journal of Animal Ecology and British Ecological Society
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 affect mate choice and reproduction.
We experimentally evaluated the potential for fisheries‐induced evolution of mating behaviour and reproductive allocation in fish.
We used an experimental system of zebrafish (Danio rerio) lines exposed to large, small or random (i.e. control) size‐selective mortality. The large‐harvested line represented a treatment simulating the typical case in fisheries where the largest individuals are preferentially harvested. We used a full factorial design of spawning trials with size‐matched individuals to control for the systematic impact of body size during reproduction, thereby singling out possible changes in mating behaviour and reproductive allocation.
Both small size‐selective mortality and large size‐selective mortality left a legacy on male mating behaviour by elevating intersexual aggression. However, there was no evidence for line‐assortative reproductive allocation. Females of all lines preferentially allocated eggs to the generally less aggressive males of the random‐harvested control line. Females of the large‐harvested line showed enhanced reproductive performance, and males of the large‐harvested line had the highest egg fertilization rate among all males. These findings can be explained as an evolutionary adaptation by which individuals of the large‐harvested line display an enhanced reproductive performance early in life to offset the increased probability of adult mortality due to harvest.
Our results suggest that the large‐harvested line evolved behaviourally mediated reproductive adaptations that could increase the rate of recovery when populations adapted to high fishing pressure come into secondary contact with other populations.
...


Publisher
Wiley-Blackwell Publishing Ltd.ISSN Search the Publication Forum
0021-8790Keywords
Metadata
Show full item recordCollections
License
Related items
Showing items with similar title or keywords.
-
Experimental size-selective harvesting affects behavioral types of a social fish
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 size‐selective fisheries on sexual selection
Uusi-Heikkilä, Silva (Wiley-Blackwell, 2020)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 ... -
Female Sexual Signaling in a Capital Breeder, the European Glow-Worm Lampyris noctiluca
Baudry, Gautier; Hopkins, Juhani; Watts, Phillip C.; Kaitala, Arja (Springer, 2021)Theory predicts that because costs constrain female sexual signaling, females are expected to have a low signaling effort that is increased with passing time until mating is secured. This pattern of signaling is expected ... -
Condition-dependence of male sexual signalling in the drumming wolf spider Hygrolycosa rubrofasciata
Ahtiainen, Jari J. (Jyväskylän yliopisto, 2003)Jari Ahtiaisen väitöskirjatyön tutkimusten perusteella voidaan todeta, että H. rubrofasciata susihämähäkkinaaraat voivat käyttää koiraan seksuaalista kuntoa mittana arvioidessaan koiraan fenotyyppistä ja geneettistä laatua. ... -
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 ...