ArticleProceedings. Biological sciences2019
Male responses to sperm competition when rivals vary in number and familiarity.
Article in Proceedings. Biological sciences, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
7 citing papers in PubMed.
- Sexual size dimorphism affecting mate choice and reproduction in the pine sawyer beetle, Monochamus alternatus.Oecologia · 2024Article
- Larval social cues influence testicular investment in an insect.Current zoology · 2022Article
- Article
- Quantifying variation in female internal genitalia: no evidence for plasticity in response to sexual conflict risk in a seed beetle.Proceedings. Biological sciences · 2021Article
- Male responses to sperm competition when rivals vary in number and familiarity.Proceedings. Biological sciences · 2019Article
- No evidence for phenotypic condition-dependent ejaculate allocation in response to sperm competition in a seed beetle.Behavioral ecology : official journal of the International Society for Behavioral EcologyArticle
- Short-term increases in rival number improves single mating productivity in maleBehavioral ecology : official journal of the International Society for Behavioral EcologyArticle
Corrections and comments
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Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Males of many species adjust their reproductive investment to the number of rivals present simultaneously. However, few studies have investigated whether males sum previous encounters with rivals, and the total level of competition has never been explicitly separated from social familiarity. Social familiarity can be an important component of kin recognition and has been suggested as a cue that males use to avoid harming females when competing with relatives. Previous work has succeeded in independently manipulating social familiarity and relatedness among rivals, but experimental manipulations of familiarity are confounded with manipulations of the total number of rivals that males encounter. Using the seed beetle Callosobruchus maculatus, we manipulated three factors: familiarity among rival males, the maximum number of rivals encountered simultaneously and the total number of rivals encountered over a 48 h period. Males produced smaller ejaculates when exposed to more rivals in total, regardless of the maximum number of rivals they encountered simultaneously. Males did not respond to familiarity. Our results demonstrate that males of this species can sum the number of rivals encountered over separate days, and therefore the confounding of familiarity with the total level of competition in previous studies should not be ignored.
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Registered trials
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