Till sidans topp

Sidansvarig: Webbredaktion
Sidan uppdaterades: 2012-09-11 15:12

Tipsa en vän
Utskriftsversion

Effects of female mating … - Göteborgs universitet Till startsida
Webbkarta
Till innehåll Läs mer om hur kakor används på gu.se

Effects of female mating order and male size on embryo survival in a pipefish.

Artikel i vetenskaplig tidskrift
Författare Inês Braga Gonçalves
Kenyon B. Mobley
Ingrid Ahnesjö
Gry Sagebakken
Adam G. Jones
Charlotta Kvarnemo
Publicerad i Biological Journal of the Linnean Society
Volym 114
Nummer/häfte 3
Sidor 639-645
ISSN 0024-4066
Publiceringsår 2015
Publicerad vid Institutionen för biologi och miljövetenskap
Sidor 639-645
Språk en
Länkar dx.doi.org/10.1111/bij.12441
Ämnesord differential allocation, mating constraints, parental investment, paternal care, reproductive compensation hypothesis, sex role-reversal
Ämneskategorier Biologiska vetenskaper, Ekologi, Marin ekologi, Etologi och beteendeekologi, Etologi, Evolutionsbiologi

Sammanfattning

In species that provide parental care, individuals should invest adaptively in their offspring in relation to the preand post-zygotic care provided by their partners. In the broad-nosed pipefish, Syngnathus typhle L., females transfer large, nutrient-rich eggs into the male brood pouch during mating. The male broods and nourishes the embryos for several weeks before independent juveniles emerge at parturition. Given a choice, females clearly prefer large partners. Yet, females provide protein-richer eggs when the same individual mates with a smaller than a larger male. In the present study, we allowed each female to mate with one small and one large male, in alternated order. We found a strong effect of female mating order, with larger clutches and higher embryo mortality in first- than second-laid broods, which may suggest that eggs over-ripen in the ovaries or reflect the negative effects of high embryo density in the brood pouch. In either case, this effect should put constraints on the possibility of a female being selective in mate choice. We also found that small and large males produced embryos of similar size and survival, consistent with the reproductive compensation hypothesis, suggesting that, in this species, larger males provide better nourishment to the embryos than smaller males.

Sidansvarig: Webbredaktion|Sidan uppdaterades: 2012-09-11
Dela:

På Göteborgs universitet använder vi kakor (cookies) för att webbplatsen ska fungera på ett bra sätt för dig. Genom att surfa vidare godkänner du att vi använder kakor.  Vad är kakor?