Sexual conflict and parental care in magnificent frigatebirds: full compensation by deserted females

  title={Sexual conflict and parental care in magnificent frigatebirds: full compensation by deserted females},
  author={Jos{\'e} Luis Osorno and Tam{\'a}s Sz{\'e}kely},
  journal={Animal Behaviour},

Parental conflict and brood desertion by females in blue-headed vireos

Equal parental care in the sexes, genetic monogamy, and an adult sex ratio biased towards males has led to female control of brood desertion in blue-headed vireos, and prerequisites to predict its occurrence are discussed.

Offspring desertion and parental care in the Whiskered Tern Chlidonias hybrida

It is concluded that male and female Whiskered Terns adopt different reproductive strategies in the population studied here, with females invest much less in parental care than males, providing less food and deserting more frequently.

Sexual conflict over care: antagonistic effects of clutch desertion on reproductive success of male and female penduline tits

It is argued that the strong antagonistic interests of sexes explain the high frequency of biparental desertion in penduline tits, because both sexes enhance their own RS by deserting, whilst harming the RS of their mates.

Offspring desertion with care? Chick mortality and plastic female desertion in Snowy Plovers

It is concluded that offspring desertion is a highly plastic behavior that allows females to maximize their reproductive success in a stochastic environment and is sensitive to the needs and the value of their broods and adjust their parental care strategy accordingly.

The dynamics of brood desertion among communally breeding females in the treehopper, Publilia concava

It is found that double guarding is extremely rare in the population, with most communal broods having only one female guard, and the theoretical work in this area will be useful for future work that addresses the allocation of parental care among communal breeders.

Sex differences in response to experimentally induced sexual conflict in Cinereous Tits Parus cinereus

ABSTRACT Capsule The experimental removal of either the male or female from breeding pairs of Cinereous Tits Parus cinereus revealed that both sexes could increase their nestling provisioning rate to

Sexual Conflict and Division of Labour during Incubation

The findings suggest that incubation attentiveness is an appropriate proxy for parental investment since it enhances offspring survival at a cost to the mother’s future fitness.

The Role of Male Parental Care in Monogamous Hill Mynah (Gracula Religiosa)

Female allopreening was significantly correlated to male parental care (as indicated by nest-entry data), especially when nestlings were 1–20 days old, and monogamy in the Hill Mynah was reinforced.

Making the best of a bad job? Chick mortality and flexible female brood care in Snowy Plovers

Snowy Plover females monitor the condition of their offspring closely and adjust their care flexibly to the value and needs of their young, suggesting that for many females, desertion was not a strategy to escape the shackles of monogamy and secure higher reproductive success through sequential polygamy.



Sexual conflict reduces offspring fitness in zebra finches

It was found that when the number of offspring per parent, and hence the potential workload, were kept constant, offspring received a greater per capita parental investment from single females than from both parents working together, and that males reared by single mothers were more sexually attractive as adults than their biparentally reared siblings.

Sexual Conflict about Parental Care: The Role of Reserves

An integrated approach is taken and a state‐dependent dynamic game model of parental care is developed that predicts that females may strategically reduce their own reserves so as to “force” their mate to provide care.

Manipulation of sex differences in parental care

The data accord with models suggesting that equality of invesment in biparental species is evolutionarily stable, but reveal new dimensions of parental response that need to be taken into account in theoretical treatments.

Offspring desertion in the Magnificent Frigatebird: are males facing a trade-off between current and future reproduction?

Inter-individual variation is consistent with the idea that male frigatebirds may face a trade-off between current and future reproductive expectations: early-settled individuals began breeding before 16 October, deserted before the average deserting date, stayed with the chick for 92 days, their chicks survived well, and 75% of these males were seen in reproductive state the following breeding season.

On the evolutionary pathway of parental care in mouth–brooding cichlid fishes

The experiments and model suggest that interspecific variation in remating opportunities and clutch size may be responsible for differences in care patterns within the sub–family Tilapiini, and support the hypothesis that biparental mouth–brooding was the ancestral state of both male and female uniparental mouths in cichlid fishes.

Reversed Sexual Size Dimorphism and Parental Care: Minimal Division of Labour in the Blue-Footed Booby

Small size appears potentially to limit male provisioning of the brood, and is unlikely to be an adaptation for division oflabour in parental care, which casts doubt on the relevance of the division-of-labour hypothesis for adult size dimorphism.

Body condition and retaliation in the parental effort decisions of incubating great frigatebirds (Fregata minor)

The factors affecting parental effort decisions during incubation by the great frigatebird, a long-lived seabird that forms new pair bonds for each breeding attempt, are studied to demonstrate the relationship between incubation shift duration and foraging trip duration is due primarily to a need to increase body mass.

Female brood desertion increases with number of available mates in the Rock Sparrow

It is shown that sequential polyandry with brood desertion is a regularly occurring strategy in the female Rock Sparrow.

Importance of monogamous male birds in determining reproductive success

House wrens (Troglodytes aedon) is addressed by removing males early in the nestling stage, concluding that when males appear to be helping, their absence usually results in decreased survival of young whereas when the males render little apparent care their absence does not decrease survival of the young.