Female ambrosia beetles adjust their offspring sex ratio according to outbreeding opportunities for their sons
نویسندگان
چکیده
منابع مشابه
Female ambrosia beetles adjust their offspring sex ratio according to outbreeding opportunities for their sons.
Recent studies on the effect of local mate competition (LMC) on sex ratios have focused on the effect of post-dispersal mating success by males. A higher proportion of males is expected to be produced as the potential for outbreeding increases. Here we demonstrate that males of a haplodiploid ambrosia beetle with LMC disperse to seek additional matings, and brood sex ratios increase with outbre...
متن کاملDo humans adjust offspring sex according to the local operational sex ratio?
Question: Do humans overproduce the rarer sex in response to skews in the local operational sex ratio (OSR)? And how should one define the OSR in humans? Hypothesis: We predicted that instead of the current adult sex ratio used in previous studies as a cue for the local OSR, parents should use the offspring sex ratio of the immediate preceding cohorts (estimated by an average spousal age differ...
متن کاملFemale common lizards (Lacerta vivipara) do not adjust their sex-biased investment in relation to the adult sex ratio.
Sex allocation theory predicts that facultative maternal investment in the rare sex should be favoured by natural selection when breeders experience predictable variation in adult sex ratios (ASRs). We found significant spatial and predictable interannual changes in local ASRs within a natural population of the common lizard where the mean ASR is female-biased, thus validating the key assumptio...
متن کاملNeighbours' Breeding Success and the Sex Ratio of Their Offspring Affect the Mate Preferences of Female Zebra Finches
Several hypotheses on divorce predict that monogamous pairs should split up more frequently after a breeding failure. Yet, deviations from the expected pattern "success-stay, failure-leave" have been reported in several species. One possible explanation for these deviations would be that individuals do not use only their own breeding performance (i.e., private information) but also that of othe...
متن کاملOutbreeding depression, but no inbreeding depression in haplodiploid Ambrosia beetles with regular sibling mating.
In sexual reproduction the genetic similarity or dissimilarity between mates strongly affects offspring fitness. When mating partners are too closely related, increased homozygosity generally causes inbreeding depression, whereas crossing between too distantly related individuals may disrupt local adaptations or coadaptations within the genome and result in outbreeding depression. The optimal d...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Evolutionary Biology
سال: 2004
ISSN: 1010-061X,1420-9101
DOI: 10.1111/j.1420-9101.2003.00687.x