scholarly journals Costly mating delays drive female ornamentation in a capital breeder

2021 ◽  
Author(s):  
Juhani Hopkins ◽  
Topi K. Lehtonen ◽  
Gautier Baudry ◽  
Arja Kaitala
Keyword(s):  
Female Ornamentation ◽  
Capital Breeder

scholarly journals I'm sexy and I glow it: female ornamentation in a nocturnal capital breeder

2015 ◽  
Vol 11 (10) ◽  
pp. 20150599 ◽  
Author(s):  
Juhani Hopkins ◽  
Gautier Baudry ◽  
Ulrika Candolin ◽  
Arja Kaitala
Keyword(s):  
Female Size ◽  
Female Fecundity ◽  
Male Preference ◽  
Sexual Signal ◽  
Sexual Ornaments ◽  
Female Ornamentation ◽  
Female Ornament ◽  
Female Ornaments ◽  
Capital Breeder ◽  
Male Mate

In many species, males rely on sexual ornaments to attract females. Females, by contrast, rarely produce ornaments. The glow-worm ( Lampyris noctiluca ) is an exception where wingless females glow to attract males that fly in search of females. However, little is known about the factors that promote the evolution of female ornaments in a sexual selection context. Here, we investigated if the female ornament of the glow-worm is a signal of fecundity used in male mate choice. In support of this, we found brightness to correlate with female fecundity, and males to prefer brighter dummy females. Thus, the glow emitted by females is a reliable sexual signal of female fecundity. It is likely that male preference for the fecundity-indicating ornament has evolved because of large variation among females in fecundity, and because nocturnal males cannot directly assess female size and fecundity. These results indicate that female ornamentation may evolve in capital breeders (i.e. those in which stored resources are invested in reproduction) when females vary significantly in fecundity and this variation cannot be assessed directly by males.

Female ornamentation, incubation behavior, and reproductive success in a wild bird

2021 ◽  
Vol 75 (6) ◽  
Author(s):  
Conor C. Taff ◽  
Corey R. Freeman-Gallant
Keyword(s):  
Reproductive Success ◽  
Wild Bird ◽  
Incubation Behavior ◽  
Female Ornamentation

Contrasted breeding strategies in four sympatric sibling insect species: when a proovigenic and capital breeder copes with a stochastic environment

2011 ◽  
Vol 26 (1) ◽  
pp. 198-206 ◽  
Author(s):  
Pierre-François Pélisson ◽  
Marie-Claude Bel-Venner ◽  
Benjamin Rey ◽  
Lorraine Burgevin ◽  
François Martineau ◽  
...  
Keyword(s):  
Insect Species ◽  
Breeding Strategies ◽  
Stochastic Environment ◽  
Capital Breeder

scholarly journals The adjustment of reproductive threshold to prey abundance in a capital breeder

1999 ◽  
Vol 68 (3) ◽  
pp. 571-580 ◽  
Author(s):  
Thomas Madsen ◽  
Richard Shine
Keyword(s):  
Prey Abundance ◽  
Capital Breeder

scholarly journals Female ornamentation and the fecundity trade-off in a sex-role reversed pipefish

2018 ◽  
Vol 8 (18) ◽  
pp. 9516-9525 ◽  
Author(s):  
Kenyon B. Mobley ◽  
John R. Morrongiello ◽  
Matthew Warr ◽  
Dianne J. Bray ◽  
Bob B. M. Wong
Keyword(s):  
Sex Role ◽  
Trade Off ◽  
Female Ornamentation

Synthesis and Outlook

2021 ◽  
pp. 153-161
Author(s):  
Ingo Schlupp
Keyword(s):  
Sexual Selection ◽  
Mate Choice ◽  
Sex Ratios ◽  
Empirical Work ◽  
Male Mate Choice ◽  
Female Ornamentation ◽  
Female Quality ◽  
Investment In Reproduction ◽  
Selection Research ◽  
Male Mate

In this final chapter I want to briefly recap what I presented in the previous chapters and provide a few ideas on what might be done in the future to move the field forward. All three factors I discussed as relevant in male mate choice—male investment in reproduction, sex ratios, and variability in partner quality—are still emerging fields in sexual selection research and need more theoretical and empirical work. I suggest that variability in female quality is more important and more complex than currently known. The same is true for sex ratios. On the other hand, I suggest that sheer investment in gametes may be a little less important than currently assumed. Most importantly we need to explore the interactions of these three pathways to male mate choice. Female competition and also female ornamentation are still somewhat enigmatic and both topics are likely to grow in importance for our understanding of sexual selection. I think considering male and female choice together, as well as female and male competition will ultimately provide a more complete picture of Darwinian sexual selection.

scholarly journals No evidence for an adaptive role of early molt into breeding plumage in a female fairy wren

2019 ◽  
Vol 31 (2) ◽  
pp. 411-420
Author(s):  
Sergio Nolazco ◽  
Michelle L Hall ◽  
Sjouke A Kingma ◽  
Kaspar Delhey ◽  
Anne Peters
Keyword(s):  
Mating Systems ◽  
Reproductive Effort ◽  
Adaptive Function ◽  
Female Ornamentation ◽  
Extrapair Mating ◽  
Study Results ◽  
Selection For ◽  
Breeding Plumage ◽  
Adaptive Role

Abstract The evolution of ornaments as sexually selected signals is well understood in males, but female ornamentation remains understudied. Fairy wrens offer an excellent model system, given their complex social structure and mating systems, and the diversity of female ornamentation. We investigated whether early molt into ornamental breeding plumage plays an adaptive role in females of the monogamous purple-crowned fairy wren Malurus coronatus, the only fairy wren known to have female seasonal plumage. Using 6 years of monitoring, we found that the timing of female molt was similar to males, but there was no evidence for assortative mating. Like males (previous study), older and dominant individuals acquired their breeding plumage earlier; however, in contrast to males, early molt did not seem to be costly since unfavorable environmental conditions or previous reproductive effort did not delay molt. Early female molt was not associated with any indicator of reproductive quality nor did it attract additional offspring care by their partners. We also found no association between early molt and the likelihood of acquiring a dominant (breeding) position or with the presence or proximity to same-sex rivals. Our study results, which are similar to previous findings in conspecific males, suggest that directional selection for early molt might be relaxed in this species, in contrast to other genetically polygamous fairy wrens in which early molt predicts extrapair mating success in males. However, the finding that molt timing is status dependent raises the possibility that other attributes of the ornament may fulfill an adaptive function in females.

Capital or income breeding crabs: who are the better invaders?

Crustaceana ◽  
2014 ◽  
Vol 87 (14) ◽  
pp. 1648-1656 ◽  
Author(s):  
Yiwen Zeng ◽  
Colin McLay ◽  
Darren C. J. Yeo
Keyword(s):  
Life History ◽  
Gonadosomatic Index ◽  
Carcinus Maenas ◽  
Breeding Strategy ◽  
Life History Trait ◽  
Hepatosomatic Index ◽  
Hemigrapsus Sanguineus ◽  
Life History Pattern ◽  
Income Breeding ◽  
Capital Breeder

A recent study by Griffen et al. (2012) drew a link between invasiveness and breeding strategy (income or capital breeding), a hitherto unconsidered life-history trait, in crabs. The methods used by the authors identified Carcinus maenas (Linnaeus, 1758) as a capital breeder and Hemigrapsus sanguineus (De Haan, 1853) as an income breeder. We extend this association of breeding strategies and invasiveness to other crab species and note that crabs in general are capital breeders based on the concurrent opposing trends of gonadosomatic index and hepatosomatic index during secondary vitellogenesis (indicating an endogenous source of nutrients for reproduction). We identify possible reasons why H. sanguineus may be regarded as an exception to this brachyuran life history pattern. Given that some species could be capable of a mixed breeding strategy, we propose experimental methods for determining such strategies.

scholarly journals Female ornamentation influences male courtship investment in a lizard

2014 ◽  
Vol 2 ◽  
Author(s):  
Devi Stuart-Fox ◽  
Jennifer L. Goode
Keyword(s):  
Male Courtship ◽  
Female Ornamentation

scholarly journals Sperm depletion may not limit male reproduction in a capital breeder

2015 ◽  
Vol 116 (3) ◽  
pp. 684-690 ◽  
Author(s):  
Lindsey Swierk ◽  
Jennifer B. Tennessen ◽  
Tracy Langkilde
Keyword(s):  
Male Reproduction ◽  
Capital Breeder ◽  
Sperm Depletion
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