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001-es BibID:	BIBFORM116725
035-os BibID:	(Scopus)85119406281 (WoS)000719833200001 (cikkazonosító)742588
Első szerző:	Fresneau, Nolwenn
Cím:	Sex Role Reversal and High Frequency of Social Polyandry in the Pheasant-Tailed Jacana (Hydrophasianus chirurgus) / Nolwenn Fresneau, Ya-Fu Lee, Wen-Chen Lee, András Kosztolányi, Tamás Székely, András Liker
Dátum:	2021
ISSN:	2296-701X
Megjegyzések:	In a few species, males invest more than females in parental care while the females invest in mating competition and producing multiple broods for several mates. Species in the family Jacanidae are commonly used for studying this type of breeding system (called sex-role reversal), and previous studies found discrepancies and variation between species in the expected characteristics of reversed sex roles. Yet, a better understanding of sex role differences in breeding behavior in such species is crucial for disentangling possible evolutionary mechanisms leading to this peculiar breeding system. Sex-role reversal in the pheasant-tailed jacana Hydrophasianus chirurgus has been documented long time ago. Since the very early observation of this species, however, there was no attempt to provide a comprehensive and quantitative description of their breeding. This study aims to fill these knowledge gaps by investigating the sex role differences in the breeding behavior of pheasant-tailed jacanas, by observing and monitoring a breeding population in Taiwan. We focused on three main characteristics of sex-role reversal: (1) competition between females for access to males, such as agonistic and courtship behaviors, (2) polyandrous mating, and (3) male-only care. As expected, we found that females provide most of the territory defense toward conspecifics. Males also participated in agonistic behaviors, although less frequently than females. Furthermore, contrary to what was expected, we found that males spent more time than females on courtship behavior. Polyandrous females performed mating and laying sequentially with different mates but maintained the pair bonds simultaneously with multiple males. For the first time for the species, we could estimate that the average number of mates per female (i.e., degree of polyandry) was 2.4 and that at least 81.8% of the females in the population were polyandrous. Finally, our observations corroborated that brood care is predominantly provided by males, nevertheless females were also participating to some degree in brood attendance but never in direct care (i.e., brooding). This study highlights that some aspects of polyandrous breeding might deviate from stereotyped view on sex-role reversal, and stress the importance of further within species and comparative studies in order to fully understand the mechanisms leading to sex-role reversal. Copyright ? 2021 Fresneau, Lee, Lee, Kosztolányi, Székely and Liker.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk Jacanidae male-only care polyandry sex-role reversal sexual competition
Megjelenés:	Frontiers in Ecology and Evolution. - 9 (2021), p.1-15. -
További szerzők:	Lee, Ya-Fu Lee, Wen-Chen Kosztolányi András (1971-) (biológus) Székely Tamás (1959-) (biológus) Liker András
Pályázati támogatás:	KH130430 Egyéb PD134414 Egyéb NN125642 Egyéb ÉLVONAL KKP-126949 Egyéb ÉLVONAL K-116310 Egyéb
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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001-es BibID:	BIBFORM114476
035-os BibID:	(WoS)001021686300008 (Scopus)85147046803
Első szerző:	McDonald, Grant C.
Cím:	Remating opportunities and low costs underlie maternal desertion / Grant C. McDonald, Innes C. Cuthill, Tamás Székely, András Kosztolányi
Dátum:	2023
ISSN:	0014-3820
Megjegyzések:	Parental care can enhance offspring survival but may impose significant costs to parents. The costs and benefits of care are key to understanding patterns of parental care, where parents can benefit by having their partner increase investment in care, while reducing their own effort. However, investigating the costs and benefits of parental care in wild populations is challenging. Here we use highly detailed behavioral observations in families of a small shorebird, where one parent frequently deserts its offspring, to explore the potential costs and benefits of desertion in a wild population. We first show that females desert their broods more frequently than males. Second, we investigate the benefits of this frequent female desertion in terms of additional mating opportunities, and the costs of desertion to females in terms of the growth and survival of deserted offspring. Our results indicate that female desertion is favored by a combination of remating benefits and a lack of costs to brood growth and survival, as abandoned male parents continue to provide care after desertion. Our results shed light on the costs and benefits underlying natural desertion strategies and suggest that female desertion is a fine-tuned behavior that responds to seasonally changing benefits of desertion.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk desertion parental care reproductive strategies sexual conflict
Megjelenés:	Evolution. - 77 : 1 (2023), p. 97-109. -
További szerzők:	Cuthill, Innes C. Székely Tamás Kosztolányi András (1971-) (biológus)
Pályázati támogatás:	ÉLVONAL KKP 126949 Egyéb K 116310 Egyéb
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