Differences in parental contribution among pair types in the polymorphic White-throated Sparrow

Knapton, Richard W.; Falls, J. Bruce

doi:10.1139/z83-173

Cited by 74 publications

(70 citation statements)

References 6 publications

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“…For example, if males perceived aggressive females to be of higher quality, that is, have greater access to limited resources or higher breeding status, they may invest more in that reproductive attempt. Greater male care could also emerge if aggressive females invest less in some forms of maternal care [8,11,23] and males act to compensate for this reduction. Finally, males may simply adjust their care level to female efforts, rather than using any perceived measure of female quality or aggression.…”

Section: Introductionmentioning

confidence: 99%

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

Cain

2014

Advances in Zoology

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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.

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Section: Introductionmentioning

confidence: 99%

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

Cain

2014

Advances in Zoology

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“…WS females are more likely to perform courtship displays, and WS males are more likely to engage in copulation outside the social pair bond (Tuttle 2003). TS birds of both sexes feed young more often during the parental phase of the breeding season than do WS birds (Knapton and Falls 1983;Kopachena and Falls 1993b). WS males and females thus exhibit behavior that is more male like than their sex-matched TS counterparts.…”

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confidence: 99%

The Chromosomal Polymorphism Linked to Variation in Social Behavior in the White-Throated Sparrow (Zonotrichia albicollis) Is a Complex Rearrangement and Suppressor of Recombination

et al. 2008

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Variation in social behavior and plumage in the white-throated sparrow (Zonotrichia albicollis) is linked to an inversion polymorphism on chromosome 2. Here we report the results of our comparative cytogenetic mapping efforts and population genetics studies focused on the genomic characterization of this balanced chromosomal polymorphism. Comparative chromosome painting and cytogenetic mapping of 15 zebra finch BAC clones to the standard (ZAL2) and alternative (ZAL2 m ) arrangements revealed that this chromosome is orthologous to chicken chromosome 3, and that at a minimum, ZAL2 and ZAL2 m differ by a pair of included pericentric inversions that we estimate span at least 98 Mb. Population-based sequencing and genotyping of multiple loci demonstrated that ZAL2 m suppresses recombination in the heterokaryotype and is evolving as a rare nonrecombining autosomal segment of the genome. In addition, we estimate that the first inversion within the ZAL2 m arrangement originated 2.2 6 0.3 million years ago. Finally, while previously recognized as a genetic model for the evolution of social behavior, we found that the ZAL2/ZAL2 m polymorphism also shares genetic and phenotypic features with the mouse t complex and we further suggest that the ZAL2/ZAL2 m polymorphism is a heretofore unrecognized model for the early stages of sex chromosome evolution.

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“…Approximately 3.5% of bird species have color polymorphism, and for some species, these morphs have been shown to match distinctive behavioral patterns (Roulin 2004). For example, in whitethroated sparrows (Zonotrichia albicollis), color morphs differ in agonistic and dominance and mate disassortatively (Knapton and Falls 1983;Watt et al 1984).…”

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confidence: 99%

Territorial male color predicts agonistic behavior of conspecifics in a color polymorphic species

Korzan

Fernald

2006

Behavioral Ecology

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Male cichlid fish, Astatotilapia burtoni, live in a lek-like social system in shore pools of Lake Tanganyika, Africa, as one of two distinct social phenotypes: territorial (T) males that comprise approximately 10-30% of the population and nonterritorial (NT) males that make up the rest. T males are brightly colored either blue or yellow with chromatic body patterns and are larger, reproductively capable, and defend territories containing a food resource used to entice females to spawn with them. NT males are camouflage colored, smaller, have regressed gonads, and shoal with females. Importantly, males shift between these social states depending on their success in aggressive encounters. It is not known whether there is a difference between yellow and blue T morphs. Here we asked whether T males preferentially defend their territory against a male of the same or opposite color. T males observed in social groups had agonistic interactions predominantly with neighboring T males of the opposite color, and yellow morphs initiated significantly more aggressive interactions. When agonistic preference was tested experimentally, T males had significantly more agonistic interactions toward males of the opposite color, and yellow T males became territorial in the majority of those interactions. Taken together, these results suggest that male coloration is an important social signal among neighboring T males in this species and support the hypothesis that T males differentially direct agonistic behavior depending on the color of neighboring males.

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Differences in parental contribution among pair types in the polymorphic White-throated Sparrow

Cited by 74 publications

References 6 publications

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

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

The Chromosomal Polymorphism Linked to Variation in Social Behavior in the White-Throated Sparrow (Zonotrichia albicollis) Is a Complex Rearrangement and Suppressor of Recombination

Territorial male color predicts agonistic behavior of conspecifics in a color polymorphic species

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