Provisioning of nestlings by dunnocks, Prunella modularis, in pairs and trios compensation reactions by males and females

Hatchwell, Ben J.; Davies, N. B.

doi:10.1007/bf00180304

Cited by 57 publications

(41 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1b,c). However, it is inappropriate to use our feeding results as evidence for no compensation or adjustment of care, because a variety of ecological factors could account for our observations (see Hatchwell and Davies 1990). Taken together with results from other studies, there appears to be very little evidence to support the diVerential allocation hypothesis in relation to male house sparrow badge size; a study by Mazuc et al (2003) also reached the same conclusion.…”

Section: Discussionsupporting

confidence: 64%

Does the badge of status influence parental care and investment in house sparrows? An experimental test

et al. 2007

View full text Add to dashboard Cite

Theory predicts that traits which signal parental quality might evolve in males of species with biparental care. In avian species, male ornaments may be the most likely candidates for such signals. Male house sparrows (Passer domesticus) possess a black throat patch often referred to as a "badge" or a "badge of status". By assuming a trade-off between male attractiveness (reflected in male ornaments) and parental care under the differential allocation hypothesis, we predicted that badge size would be negatively correlated with male parental investment. An experiment in which the badge was enlarged in one group and unchanged in a control group was conducted. Our manipulation was predicted to affect female as well as male parental investment. However, we found that eight variables associated with parental investment-the start date for breeding, clutch size, male and female incubation time, male and female food provisioning rate, and average chick weight and the number of fledglings-barely differed between treatments. Also, little evidence for correlations between natural variation in badge size and any of these eight variables was found. Instead, the start date for breeding and the number of fledglings were significantly correlated with both male and female age, while clutch size increased with female age. Female condition was a positive predictor of clutch size and number of fledglings. Female tarsus length, unexpectedly, is related to both male and female incubation time. Badge size was also positively correlated with male age. However, parental age (male or female) was not related to parental care. We conclude that badge size does not signal parental quality, but that the ages of both sexes and the condition of the female play significant roles in the reproductive performance of this species.

show abstract

Section: Discussionsupporting

confidence: 64%

Does the badge of status influence parental care and investment in house sparrows? An experimental test

et al. 2007

View full text Add to dashboard Cite

show abstract

“…c Interaction between brood size and brood age. provisioning rate per nest compared to monogamous males (Hatchwell & Davies 1990, Redpath et al 2006. In these situations secondary harrier females are able to compensate for the lower provisioning rate by males, by bringing larger prey, not by increasing the provisioning rate (Redpath et al 2006).…”

Section: Discussionmentioning

confidence: 98%

Parental differences in brood provisioning by Hen HarriersCircus cyaneus

Leckie¹,

Arroyo²,

Thirgood³

et al. 2008

Bird Study

View full text Add to dashboard Cite

“…For instance, in willow tits (Parus montanus), there was a positive relationship early in the nestling period, but this relationship tended towards negative at the end of the nestling period [66]. Further, in dunnocks (Prunella modularis), there was no relationships between male and female provisioning rates in unmanipulated pairs/trios, but both female and beta-male provisioning rates increased when investment by others in the pair/group was experimentally reduced [25].…”

Section: Female and Male Offspringmentioning

confidence: 98%

“…Finally, males may simply adjust their care level to female efforts, rather than using any perceived measure of female quality or aggression. The relationship between male and female parental effort is an important question for the evolution of mating systems and parental care and has been examined in a number of species (e.g., [24][25][26][27][28][29]). However, few studies have examined the relationship between female aggression and male quality or paternal care, all of which could alter the social pair's reproductive success.…”

Section: Introductionmentioning

confidence: 99%

Mates of Competitive Females: The Relationships between Female Aggression, Mate Quality, and Parental Care

Cain

2014

Advances in Zoology

View full text Add to dashboard Cite

Though rarely mate-limited, females in a wide variety of species express traits commonly associated with mate competition in males. Recent research has shown that these competitive traits (ornaments, armaments, and intense aggression) often function in the context of female-female competition for nonsexual reproductive resources and are often positively related to reproductive success. Increased success could occur because competitive females acquire limited ecological resources (nest sites, territories, etc.) or because they pair with high quality males, that is, older, more ornamented, or more parental males. Further, males paired with aggressive/low care females may compensate by increasing their paternal efforts. Here, I examined patterns of social pairing and parental care in free-living dark-eyed juncos (Junco hyemalis), a biparental songbird. I found no detectable relationship between female competitive behavior (aggression) and male quality (age, size, or ornamentation) or male provisioning. Thus, neither of the mate choice hypotheses (females compete for males or males prefer aggressive females) was supported. Instead, these results suggest that females compete for nonsexual resources and mate quality is a secondary consideration. I also found a negative relationship between male and female provisioning rates, suggesting that partners adjust their level of parental effort in response to their partner's efforts.

show abstract

Provisioning of nestlings by dunnocks, Prunella modularis, in pairs and trios compensation reactions by males and females

Cited by 57 publications

References 28 publications

Does the badge of status influence parental care and investment in house sparrows? An experimental test

Does the badge of status influence parental care and investment in house sparrows? An experimental test

Parental differences in brood provisioning by Hen HarriersCircus cyaneus

Mates of Competitive Females: The Relationships between Female Aggression, Mate Quality, and Parental Care

Contact Info

Product

Resources

About