ArticleScientific reports2016
Comparative morphological trade-offs between pre- and post-copulatory sexual selection in Giant hissing cockroaches (Tribe: Gromphadorhini).
Article in Scientific reports, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed.
- Diagnosing confounded Bateman gradients.Evolution; international journal of organic evolution · 2025Article
- Ejaculate Ejection by Female Fruit Flies Does Not Correlate With Mating Latency or Male Presence, Irrespective of How Ejection Is Measured.Ecology and evolution · 2025Article
- Monogamy removes constraints on reproductive tissue investment imposed by intense sexual selection.Scientific reports · 2025Article
- Fight, retreat, repeat: The male-male agonistic behavior in the wood-feeding cockroach,Ecology and evolution · 2024Article
- Sperm competition increases sperm production and quality inProceedings. Biological sciences · 2023Article
- Experimental evolution under varying sex ratio and nutrient availability modulates male mating success inBiology letters · 2022Article
- Reproductive trade-offs of the estuarine copepod Eurytemora affinis under different thermal and haline regimes.Scientific reports · 2021Article
- Pre- and post-copulatory traits working in concert: sexual dichromatism in passerines is associated with sperm morphology.Biology letters · 2020Article
- Fundamental Understanding of Cellular Water Transport Process in Bio-Food Material during Drying.Scientific reports · 2018Article
- Fight outcome briefly affects the reproductive fitness of male crickets.Scientific reports · 2018Article
- Ecological contexts shape sexual selection on male color morphs in wood tiger moths.Behavioral ecology : official journal of the International Society for Behavioral EcologyArticle
- No Evidence for a Trade-Off Between Competitive Traits and Ejaculate Quality in Humans.Evolutionary psychology : an international journal of evolutionary approaches to psychology and behaviorArticle
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4 authors.
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Abstract
Sperm competition theory predicts that animals face a trade-off between investment in weaponry and investment in ejaculate composition. Within the Madagascan giant hissing cockroaches (Tribe Gromphadorhini) differences in morphology exist that may indicate differing strategies of male-male competition. We compared relative pronotal horn length using high-resolution X-ray CT scanning data, relative testes mass, and male-male agonistic behaviour between two species of hissing cockroaches, Gromphadorhina oblongonota and Aeluropoda insignis. The gross morphology and behaviour of these two species indicated that G. oblongonota is selected for pre-copulatory mate acquisition and that A. insignis is selected for post-copulatory sperm competition. We found evidence for a trade-off when investing in testes mass vs. horn length between the species. The large, aggressive G. oblongonota follows a strategy of greater investment in weapons at the expense of testes mass while the smaller, less-aggressive A. insignis invests in relatively greater testes mass and less in pronotal weapon length. We also found evidence of a trade-off within each species, where individuals invest more heavily in weapon length at the expense of testes mass. These findings support the predictions of pre- and post-copulatory competitive investment trade-offs for a relatively understudied Tribe of cockroaches.
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