Temporal genetic structure and relatedness in the Tufted Duck<i>Aythya fuligula</i>suggests limited kin association in winter

Liu, Yang; Keller, Irene; Heckel, Gerald

doi:10.1111/ibi.12059

Cited by 11 publications

(12 citation statements)

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“…; Liu et al . ). However, although our study revealed no relation between kinship and social structure, it was somewhat surprising that many individuals did appear to have at least one close relative ( r ≥ 0.25) in the population.…”

Section: Discussionmentioning

confidence: 97%

“…this study; tufted duck ( Aythya fuligula ) Liu et al . ). These patterns of variation provide opportunities for exploring how ecological factors interact with kinship to produce variations in the structures of animal societies.…”

Section: Discussionmentioning

confidence: 97%

“…; Liu et al . ) and migrate different distances (Ketterson & Nolan ). Indeed, our winter population is consistently female biased (~75% females in both years), suggesting such differential migration in this species.…”

Section: Discussionmentioning

confidence: 99%

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Social network structure in wintering golden‐crowned sparrows is not correlated with kinship

et al. 2015

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Stable social organization in a wide variety of organisms has been linked to kinship, which can minimize conflict due to the indirect fitness benefits from cooperating with relatives. In birds, kin selection has been mostly studied in the context of reproduction or in species that are social year round. Many birds however are migratory, and the role of kinship in the winter societies of these species is virtually unexplored. In a previous study, we discovered striking social complexity and stability in a wintering population of migratory golden-crowned sparrows (Zonotrichia atricapilla) - individuals repeatedly form close associations with the same social partners, including across multiple winters. Here, we test the possibility that kinship might be involved in these close and stable social affiliations. We examine the relationship between kinship and social structure for two of the consecutive wintering seasons from the previous study. We found no evidence that social structure was influenced by kinship. Relatedness between most pairs of individuals was at most that of first cousins (and mostly far lower). Genetic networks based on relatedness do not correspond to the social networks, and Mantel tests revealed no relationship between kinship and pairwise interaction frequency. Kinship also failed to predict social structure in more fine-grained analyses, including analyses of each sex separately (in the event that sex-biased migration might limit kin selection to one sex), and separate analyses for each social community. The complex winter societies of golden-crowned sparrows appear to be based on cooperative benefits unrelated to kin selection.

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Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 97%

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Social network structure in wintering golden‐crowned sparrows is not correlated with kinship

et al. 2015

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“…Juvenile king eiders (S. spectabilis) appeared not to migrate with their mother to the wintering area (Bentzen & Powell, 2015), but young common eiders and harlequin ducks (Histrionicus histrionicus) may follow their mother (Franzmann, 1983;Regehr et al, 2001). In tufted duck (Aythya fuligula) some same-sex close relatives occurred together in wintering areas (Liu, Keller & Heckel, 2013). Relatedness in brood parasitism and merging may partly be outcomes of a more general strategy in female waterfowl of associating with kin, with potential inclusive fitness benefits in several social situations (Andersson & Waldeck, 2007).…”

Section: (4) Kin Association Outside the Breeding Seasonmentioning

confidence: 99%

Brood parasitism, relatedness and sociality: a kinship role in female reproductive tactics

2018

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Conspecific brood parasitism (CBP) is a reproductive tactic in which parasitic females lay eggs in nests of other females of the same species that then raise the joint brood. Parasites benefit by increased reproduction, without costs of parental care for the parasitic eggs. CBP occurs in many egg-laying animals, among birds most often in species with large clutches and self-feeding young: two major factors facilitating successful parasitism. CBP is particularly common in waterfowl (Anatidae), a group with female-biased natal philopatry and locally related females. Theory suggests that relatedness between host and parasite can lead to inclusive fitness benefits for both, but if host costs are high, parasites should instead target unrelated females. Pairwise relatedness (r) in host-parasite (h-p) pairs of females has been estimated using molecular genetic methods in seven waterfowl (10 studies). In many h-p pairs, the two females were unrelated (with low r, near the local population mean). However, close relatives (r = 0.5) were over-represented in h-p pairs, which in all 10 studies had higher mean relatedness than other females. In one species where this was studied, h-p relatedness was higher than between nesting close neighbours, and hosts parasitized by non-relatives aggressively rejected other females. In another species, birth nest-mates (mother-daughters, sisters) associated in the breeding area as adults, and became h-p pairs more often than expected by chance. These and other results point to recognition of birth nest-mates and perhaps other close relatives. For small to medium host clutch sizes, addition of a few parasitic eggs need not reduce host offspring success. Estimates in two species suggest that hosts can then gain inclusive fitness if parasitized by relatives. Other evidence of female cooperation is incubation by old eider Somateria mollissima females of clutches laid by their relatives, and merging and joint care of broods of young. Merging females tended to be more closely related. Eiders associate with kin in many situations, and in some geese and swans, related females may associate over many years. Recent genetic evidence shows that also New World quails (Odontophoridae) have female-biased natal philopatry, CBP and brood merging, inviting further study and comparison with waterfowl. Kin-related parasitism also occurs in some insects, with revealing parallels and differences compared to birds. In hemipteran bugs, receiving extra eggs is beneficial for hosts by diluting offspring predation. In eggplant lace bugs Gargaphia solani, host and parasite are closely related, and kin selection favours egg donation to related females. Further studies of kinship in CBP, brood merging and other contexts can test if some of these species are socially more advanced than presently known.

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“…This supports the possibility that winter pairing contributes to the avoidance of inbreeding. The level of genetic variation within Northern Pintail and other dabbling duck populations might result from gene flow that is determined in the wintering grounds (Robertson & Cooke 1999, Scribner et al 2001, Liu et al 2013.…”

Section: Discussionmentioning

confidence: 99%

Geographical origin of dabbling ducks wintering in Iberia: sex differences and implications for pair formation

Parejo

Navedo

Gutiérrez

et al. 2015

Ibis

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Natural and anthropogenic Iberian wetlands in southern Europe are well known for supporting large numbers of migratory Palaearctic waterbirds each winter. However, information on the geographical origin of dabbling ducks overwintering in these wetlands is scarce and mostly limited to data from ringing recoveries. Here, we used intrinsic isotopic markers to determine the geographical origin of male and female Northern Pintails Anas acuta and Eurasian Teal Anas crecca in Extremadura, inland Iberia, a key site for overwintering dabbling ducks. Additionally, we fitted six Northern Pintails with GPS‐GSM tags to complement the data derived from stable isotope analysis. Most (> 70%) first calendar‐year Northern Pintails were assigned to regions above 55°N, flying 2600–5600 km from their main natal regions to Extremadura. Mean values of δ2Hf varied significantly between male and female Northern Pintails, suggesting that the sexes had different geographical origins. Data from tagged adult Northern Pintails supported the isotopic data, one male flying more than 5000 km to the coast of the Pechora Sea (Russia). Most (> 70%) first calendar‐year Eurasian Teal were assigned to the region between 48° and 60°N, travelling 1500–4500 km to arrive in Extremadura. Male and female Eurasian Teal showed marginal differences in mean values of δ2Hf. In migratory dabbling ducks, pairing typically occurs on the wintering grounds, and ducks in their first winter can breed the following spring. For Northern Pintails, pair formation in Extremadura could occur between individuals with different geographical origins, which could contribute to the genetic variability of their offspring.

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Temporal genetic structure and relatedness in the Tufted DuckAythya fuligulasuggests limited kin association in winter

Cited by 11 publications

References 49 publications

Social network structure in wintering golden‐crowned sparrows is not correlated with kinship

Social network structure in wintering golden‐crowned sparrows is not correlated with kinship

Brood parasitism, relatedness and sociality: a kinship role in female reproductive tactics

Geographical origin of dabbling ducks wintering in Iberia: sex differences and implications for pair formation

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