Potential strategic allocation of nuptial gift proteins of the neotropical katydid Conocephalus ictus (Orthoptera Tettigoniidae).

Autor: Cueva Del Castillo R; UBIPRO, Facultad de Estudios Superiores Iztacala, A.P. 314, Tlalnepantla 54090. Mexico. Electronic address: rcueva@ecologia.unam.mx., Elias-Quevedo A; UBIPRO, Facultad de Estudios Superiores Iztacala, A.P. 314, Tlalnepantla 54090. Mexico., Medrano JV; UBIPRO, Facultad de Estudios Superiores Iztacala, A.P. 314, Tlalnepantla 54090. Mexico., Ruíz-Flores A; UBIPRO, Facultad de Estudios Superiores Iztacala, A.P. 314, Tlalnepantla 54090. Mexico., Flores-Ortiz CM; UBIPRO, Facultad de Estudios Superiores Iztacala, A.P. 314, Tlalnepantla 54090. Mexico.
Jazyk: angličtina
Zdroj: Journal of insect physiology [J Insect Physiol] 2024 May; Vol. 154, pp. 104633. Date of Electronic Publication: 2024 Mar 28.
DOI: 10.1016/j.jinsphys.2024.104633
Abstrakt: In many katydids, the male feeds his mate with a large gelatinous spermatophore. While providing large spermatophores can increase female fecundity and lifespan, it may also decrease their sexual receptivity, benefiting male fitness. Allocating resources to these edible gifts may entail a lower apportionment of them to other functions, generating a trade-off between somatic and reproductive functions. Despite their effect on male and female fitness, little is known of the compounds associated with katydid spermatophores. Our study found 177 different putative proteins in the spermatophore of Conocephalus ictus, with no correlation between male body size with spermatophore mass, number, concentration and mass of proteins. However, we did observe a negative relationship between male forewing length and protein concentration, and a negative relationship between the mass of the spermatophore transferred to the females and their body size, suggesting a resource allocation trade-off in males, but also strategic transference of resources based on female quality.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 The Authors. Published by Elsevier Ltd.. All rights reserved.)
Databáze: MEDLINE
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