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001-es BibID:	BIBFORM087510
035-os BibID:	(WoS)000487910900004 (Scopus)85073193198
Első szerző:	Rosa Márta Erzsébet
Cím:	Size-dependent investment in tusk length, testis size and sperm length in a biparental geotrupid beetle / M. E. Rosa, J. Kiss, Z. Barta, A. Kosztolányi
Dátum:	2019
ISSN:	0952-8369
Megjegyzések:	Males of extreme small or large sizes often experience different levels of pre- and postcopulatory sexual selection that result in alternative ways to gain fertilization success. Here, we investigated such alternative mating tactics in Lethrus apterus, a biparental geotrupid beetle species with noticeable intermale size variation by comparing tusk (mandibular process) length, testis size and sperm length between large and small males. Firstly, we demonstrated evidence for male polymorphism as extremely large males had longer tusks relative to their body size than extremely small individuals. Secondly, large males had bigger testes than small males throughout the breeding season, however, a significant decrease was observed overtime in large but not in small individuals. Thirdly, sperm length did not differ between the two size categories. Although these results do not explain how the observed large body size variation can be maintained in L. apterus, the non allo-metric relationship found between tusk length and body size and the lower decrease in testis size over the breeding season in case of small individuals might refer to the presence of alternative mating tactics in this species.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk body size sperm competition reproductive strategies insects Geotrupidae polymorphism testis size Lethrus apterus
Megjelenés:	Journal of Zoology. - 309 : 2 (2019), p. 106-113. -
További szerzők:	Kiss Johanna (1989-) (zoológus) Barta Zoltán (1967-) (biológus, zoológus) Kosztolányi András (1971-) (biológus)
Pályázati támogatás:	EFOP-3.6.1-16-2016-00022 EFOP NKFIH K112670 egyéb
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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