Sexually attractive traits predict predation-threat sensitivity of male alternative mating tactics DOI
Jean‐Guy J. Godin, Heather E McDonough, Thomas M. Houslay

et al.

Behavioral Ecology, Journal Year: 2023, Volume and Issue: unknown

Published: Nov. 14, 2023

Abstract Although visual sexual signals, such as ornamental colors and courtship displays, large body size in males are attractive to females numerous species, they may also inadvertently attract the attention of eavesdropping predators thus be costly terms increasing individual risk mortality predation. Theoretically, more color ornamented larger should predation threat sensitive suppress their signaling and(or) mating effort relatively than less smaller counterparts when under hazard. Here, we experimentally tested this hypothesis by quantifying concurrently rates alternative tactics (courtship sneak attempts) expressed male Trinidadian guppies (Poecilia reticulata) varying ornamentation a staged immediate Males suppressed overall response perceived threat, decreasing frequency (presumably conspicuous) displays significantly on average behavior. Statistically controlling for length, color-ornamented were but not attempts, hazard drabber males. Controlling coloration, exhibited lower efforts both treatments, length only influenced sensitivity These results consistent with asset protection principle highlight phenotype dependency adaptive plasticity risk.

Language: Английский

UV‐Induced Fluorescence in the Balance: Mate Choice and Predation Risk in the Female Ornamented Jumping Spiders DOI

Yingna Zhou,

Long Yu, Xiaoyan Wang

et al.

Integrative Zoology, Journal Year: 2025, Volume and Issue: unknown

Published: April 9, 2025

ABSTRACT The adaptive significance of female ornamentation remains a central question in evolutionary biology, with ultraviolet (UV)‐induced fluorescence emerging as key area interest. This study investigates the potential advantages female‐specific UV‐induced male mate choice and predation risk, fitness costs, using two species ornate jumping spiders Phintella vittata Ph. bifurcilinea . In these species, palps adult females exhibit fluorescence, offering compelling model to explore interplay sexual natural selection acting on ornamentation. mate‐choice trials, males were presented between fluorescent (F+, UV‐visible) non‐fluorescent (F–, UV‐blocked) female. Males showed pronounced preference for F+ over F– females, that is, spending significantly more time interacting suggesting serves sexually selected signal. To assess costs we tested its effect risk spider‐eating spider Portia xishan predator under conditions. Predation rates higher than indicating increases detectability by predators. These findings provide empirical evidence trade‐off: While enhances preference, it also risk. is first demonstrate dual roles signaling spiders, challenging traditional male‐centric perspectives choice. By integrating behavioral ecological approaches, this work offers new insights into trade‐offs associated traits.

Language: Английский

Citations

0
Correction: Predation drives complex eco-evolutionary dynamics in sexually selected traits DOI Creative Commons
Brian A. Lerch, Maria R. Servedio

PLoS Biology, Journal Year: 2025, Volume and Issue: 23(4), P. e3003125 - e3003125

Published: April 4, 2025

[This corrects the article DOI: 10.1371/journal.pbio.3002059.].

Language: Английский

Citations

0
Does death drive the scaling of life? DOI
Douglas S. Glazier

Biological reviews/Biological reviews of the Cambridge Philosophical Society, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 29, 2024

ABSTRACT The magnitude of many kinds biological structures and processes scale with organismal size, often in regular ways that can be described by power functions. Traditionally, these “biological scaling” relationships have been explained based on internal geometric, physical, energetic constraints according to universal natural laws, such as the “surface law” “3/4‐power law”. However, during last three decades it has become increasingly apparent scaling vary greatly response various external (environmental) factors. In this review, I propose provide several lines evidence supporting a new ecological perspective call “mortality theory ecology” (MorTE). According viewpoint, mortality imposes time limits growth, development, reproduction organisms. Accordingly, small, vulnerable organisms subject high due predation other environmental hazards evolved faster, shorter lives than larger, more protected A MorTE also includes corollary, size‐related causative factors (e.g. intraspecific resource competition, geometric surface area volume effects supply/transport protection tissues from hazards, homeostatic regulatory systems, incidence pathogens parasites, etc.) impact life. mortality‐centred approach successfully predicts ranges body‐mass slopes observed for traits. Furthermore, argue rate should considered ultimate (evolutionary) driver life, is expressed context proximate (functional) drivers information‐based regulation spatial (geometric) (metabolic) constraints.

Language: Английский

Citations

1
Sexually attractive traits predict predation-threat sensitivity of male alternative mating tactics DOI
Jean‐Guy J. Godin, Heather E McDonough, Thomas M. Houslay

et al.

Behavioral Ecology, Journal Year: 2023, Volume and Issue: unknown

Published: Nov. 14, 2023

Abstract Although visual sexual signals, such as ornamental colors and courtship displays, large body size in males are attractive to females numerous species, they may also inadvertently attract the attention of eavesdropping predators thus be costly terms increasing individual risk mortality predation. Theoretically, more color ornamented larger should predation threat sensitive suppress their signaling and(or) mating effort relatively than less smaller counterparts when under hazard. Here, we experimentally tested this hypothesis by quantifying concurrently rates alternative tactics (courtship sneak attempts) expressed male Trinidadian guppies (Poecilia reticulata) varying ornamentation a staged immediate Males suppressed overall response perceived threat, decreasing frequency (presumably conspicuous) displays significantly on average behavior. Statistically controlling for length, color-ornamented were but not attempts, hazard drabber males. Controlling coloration, exhibited lower efforts both treatments, length only influenced sensitivity These results consistent with asset protection principle highlight phenotype dependency adaptive plasticity risk.

Language: Английский

Citations

1