Long-tailed Tit (Aegithalos caudatus)

2020 ◽  
Author(s):  
Simon Harrap
Keyword(s):  
Aegithalos Caudatus

A new feather mite species of the genus Proctophyllodes Robin, 1877 (Astigmata: Proctophyllodidae) from the Long-tailed Tit Aegithalos caudatus (Passeriformes: Aegithalidae)—morphological description with DNA barcode data

Zootaxa ◽  
2012 ◽  
Vol 3253 (1) ◽  
pp. 54 ◽  
Author(s):  
SERGEY V. MIRONOV ◽  
JACEK DABERT ◽  
MIROSLAWA DABERT
Keyword(s):  
Sequence Data ◽  
Russian Far East ◽  
Far East ◽  
Dna Barcode ◽  
Mite Species ◽  
Species Group ◽  
Morphological Description ◽  
Feather Mites ◽  
Aegithalos Caudatus ◽  
First Time

A new feather mites species, Proctophyllodes valchukae sp. n., is described from the Long-tailed Tit, Aegithalos caudatus(Linnaeus, 1758) (Passeriformes: Aegithalidae), captured in the Primoriye (Russian Far East). The new species belongsto the tricetratus species group and is most closely related to P. stachyris Atyeo et Braasch, 1966. For the first time forfeather mites the standard morphological description is supplemented by sequence data of the mitochondrial cytochrome c oxidase subunit I gene fragment (COI) and nuclear D2 region of 28S rDNA.

scholarly journals Cost, risk, and avoidance of inbreeding in a cooperatively breeding bird

2020 ◽  
Vol 117 (27) ◽  
pp. 15724-15730
Author(s):  
Amy E. Leedale ◽  
Michelle Simeoni ◽  
Stuart P. Sharp ◽  
Jonathan P. Green ◽  
Jon Slate ◽  
...  
Keyword(s):  
Mate Choice ◽  
Natural Populations ◽  
Positive Association ◽  
Kin Discrimination ◽  
Breeding Bird ◽  
First Order ◽  
Aegithalos Caudatus ◽  
Opposite Sex ◽  
Plausible Mechanism ◽  
Multiple Mate

Inbreeding is often avoided in natural populations by passive processes such as sex-biased dispersal. But, in many social animals, opposite-sexed adult relatives are spatially clustered, generating a risk of incest and hence selection for active inbreeding avoidance. Here we show that, in long-tailed tits (Aegithalos caudatus), a cooperative breeder that risks inbreeding by living alongside opposite-sex relatives, inbreeding carries fitness costs and is avoided by active kin discrimination during mate choice. First, we identified a positive association between heterozygosity and fitness, indicating that inbreeding is costly. We then compared relatedness within breeding pairs to that expected under multiple mate-choice models, finding that pair relatedness is consistent with avoidance of first-order kin as partners. Finally, we show that the similarity of vocal cues offers a plausible mechanism for discrimination against first-order kin during mate choice. Long-tailed tits are known to discriminate between the calls of close kin and nonkin, and they favor first-order kin in cooperative contexts, so we conclude that long-tailed tits use the same kin discrimination rule to avoid inbreeding as they do to direct help toward kin.

scholarly journals Inclusive fitness consequences of dispersal decisions in a cooperatively breeding bird, the long-tailed tit (Aegithalos caudatus)

2018 ◽  
Vol 115 (47) ◽  
pp. 12011-12016 ◽  
Author(s):  
Jonathan P. Green ◽  
Ben J. Hatchwell
Keyword(s):  
Inclusive Fitness ◽  
Natural Populations ◽  
Dispersal Distance ◽  
Relative Fitness ◽  
Lifetime Reproductive Success ◽  
Natal Philopatry ◽  
Dispersal Patterns ◽  
Long Term Study ◽  
Fitness Consequences ◽  
Aegithalos Caudatus

Natal dispersal is a demographic trait with profound evolutionary, ecological, and behavioral consequences. However, our understanding of the adaptive value of dispersal patterns is severely hampered by the difficulty of measuring the relative fitness consequences of alternative dispersal strategies in natural populations. This is especially true in social species, in which natal philopatry allows kin selection to operate, so direct and indirect components of inclusive fitness have to be considered when evaluating selection on dispersal. Here, we use lifetime reproductive success data from a long-term study of a cooperative breeder, the long-tailed titAegithalos caudatus, to quantify the direct and indirect components of inclusive fitness. We show that dispersal has a negative effect on the accrual of indirect fitness, and hence inclusive fitness, by males. In contrast, the inclusive, predominantly direct, fitness of females increases with dispersal distance. We conclude that the conflicting fitness consequences of dispersal in this species result in sexually antagonistic selection on this key demographic parameter.

Direct and indirect effects of pollution on the foraging behaviour of forest passerines during the breeding season

1998 ◽  
Vol 76 (3) ◽  
pp. 556-565 ◽  
Author(s):  
Lluís Brotons ◽  
Marc Magrans ◽  
Lluís Ferrús ◽  
Jacint Nadal
Keyword(s):  
Breeding Season ◽  
Indirect Effects ◽  
Foraging Behaviour ◽  
Negative Impact ◽  
Polluted Area ◽  
Direct And Indirect Effects ◽  
Breeding Performance ◽  
Coal Tit ◽  
Site Use ◽  
Aegithalos Caudatus

Direct and indirect effects of acid deposition on the foraging behaviour of three forest passerine species, the Crested Tit (Parus cristatus), Long-tailed Tit (Aegithalos caudatus), and Coal Tit (P. ater), during the breeding season were studied. In two areas, one affected by pollution from a nearby coal-fired power station and the other unaffected by pollution, we measured needle density and arthropod availability on tree branches; both factors are recognised as affecting the foraging behaviour of forest birds. Tree-site use and movement patterns of birds searching for prey were also determined in both areas. Branch needle density was lower in the polluted area, as were densities of the main arthropod groups found on needled twigs (Homoptera and Aranae); however, the total abundance of arthropods did not differ between the areas, and some groups even seemed to increase slightly in abundance in the polluted area. Bird behaviour differed between zones in both tree-site use and foraging activities. The Coal Tit showed the greatest number of differences between the areas. The three species showed lower pecking and higher vigilance rates in the polluted area. Higher vigilance rates are interpreted as a response to a higher predation risk due to thinned canopies in polluted forests. The results are discussed in relation to species' breeding performance and ecology. It is concluded that, through increasing levels of stress, the indirect effects of pollution have a negative impact on bird foraging behaviour during the breeding season.

Sharing of caring: nestling provisioning behaviour of long-tailed tit, Aegithalos caudatus, parents and helpers

2003 ◽  
Vol 66 (5) ◽  
pp. 955-964 ◽  
Author(s):  
Andrew D.C. MacColl ◽  
Ben J. Hatchwell
Keyword(s):  
Nestling Provisioning ◽  
Aegithalos Caudatus ◽  
Provisioning Behaviour

scholarly journals Home range structure of a population of Aegithalos caudatus

1972 ◽  
Vol 6 (5-6) ◽  
pp. 424-488 ◽  
Author(s):  
Toru Nakamura
Keyword(s):  
Home Range ◽  
Aegithalos Caudatus
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