Revista de Biología Tropical ISSN Impreso: 0034-7744 ISSN electrónico: 2215-2075

OAI: https://revistas.ucr.ac.cr/index.php/rbt/oai
Why do some Australian onychophorans have fantastic heads?
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Keywords

male onychophoran
modified papillae
palps and spines
male genital apparatus
spermatophore
sexual selection onicóforo macho
papilas modificadas
palpos y espinas
aparato genital masculino
espermatóforo
selección sexual

How to Cite

Monge, J. (2019). Why do some Australian onychophorans have fantastic heads?. Revista De Biología Tropical, (1), Darwin. Retrieved from https://revistas.ucr.ac.cr/index.php/rbt/article/view/36260

Abstract

Males of some Australian onychophorans transfer their spermatophores with spectacular structures in their head, such as pits with palps and spines. No one has explained why these structures allow this species to be identified. Here we propose that, when its head is the genital apparatus, natural selection treats it as a genital apparatus. Probably these fantastic heads of Australian onychophorans are just another case of divergent sexual evolution by sexual selection.

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References

Eberhard, W. G., Rodríguez, R. L., Huber, B. A., Speck, B., Miller, H., Buzatto, B. A., & Machado, G. (2018). Sexual selection and static allometry: the importance of function. The Quarterly Review of Biology, 93(3), 207-250.

Klaczko, J., Ingram, T., & Losos, J. (2015). Genitals evolve faster than other traits in Anolis lizards. Journal of Zoology, 295(1), 44-48.

Puniamoorthy, N., Kotrba, M., & Meier, R. (2010). Unlocking the” Black box”: internal female genitalia in Sepsidae (Diptera) evolve fast and are species-specific. BMC Evolutionary Biology, 10(1), 275.

Schaller, F. (1971). Indirect sperm transfer by soil arthropods. Annual review of entomology, 16(1), 407-446.

Tait, N. N., & Norman, J. M. (2001). Novel mating behaviour in Florelliceps stutchburyae gen. nov., sp. nov.(Onychophora: Peripatopsidae) from Australia. Journal of Zoology, 253(3), 301-308.

Weygoldt, P. (1999). Spermatophores and the evolution of female genitalia in whip spiders (Chelicerata, Amblypygi). Journal of Arachnology, 27(1), 103-116.

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