The Experts below are selected from a list of 249 Experts worldwide ranked by ideXlab platform
Howard A. Ross - One of the best experts on this subject based on the ideXlab platform.
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Genetic differentiation of starling (Sturnus vulgaris: Aves) populations in New Zealand and Great Britain
Journal of Zoology, 2009Co-Authors: Howard A. RossAbstract:Several hundred starlings (Sturnus vulgaris) were introduced to New Zealand from Great Britain during1860–1880. Allozymic variation at 24 loci was analysed in winter populations sampled at six localities in each country. New Zealand samples had fewer alleles per locus but the same mean heterozygosity (3% per locus) and proportion of polymorphic loci as did British samples. Winter populations in Britain contain European migrants and were genetically homogeneous. Paradoxically, genetic distances among derived New Zealand populations, and between New Zealand and Great Britain were much greater, similar in magnitude to those observed among allopatric populations in other avian species. The geographical pattern of genetic variation in New Zealand suggests that reproductive isolation of populations and random drift have contributed to the development of population differentiation.
Julia Inés Diaz - One of the best experts on this subject based on the ideXlab platform.
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Helminth parasites of the European starling (Sturnus vulgaris) (Aves, Sturnidae), an invasive bird in Argentina
Parasitology research, 2014Co-Authors: Romina Valente, Diego Montalti, Lucía Mariel Ibañez, Eliana Andrea Lorenti, Vanina D. Fiorini, Julia Inés DiazAbstract:The aim of this work is to contribute to the knowledge of gastrointestinal parasites of the European starling Sturnus vulgaris, an invasive bird from Argentina. Seventy-six birds were collected during the spring of 2007 and were examined for helminths. Six parasite species were found: one trematoda of the Echinostoma revolutum “group,” four nematodes (Synhimantus nasuta, Microtetrameres sp., Pterothominx exilis, and Ornithocapillaria ovopunctata), and one acanthocephalan (Plagiorhynchus cylindraceus). All species found have been recorded in Eurasia and/or North America previously, although present reports enlarge their geographical distribution. As expected in an invasive host, the parasite community shows much lower species richness (n = 6) than those observed in their native area (79 and 35 in the Eurasia and North America, respectively).
Clive K. Catchpole - One of the best experts on this subject based on the ideXlab platform.
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developmental stress social rank and song complexity in the european starling Sturnus vulgaris
Proceedings of The Royal Society B: Biological Sciences, 2004Co-Authors: Karen A. Spencer, Katherine L. Buchanan, A R Goldsmith, Clive K. CatchpoleAbstract:Bird song is a sexually selected trait and females have been shown to prefer males that sing more complex songs. However, for repertoire size to be an honest signal of male quality it must be associated with some form of cost. This experiment investigates the effects of food restriction and social status during development on song complexity in the European starling (Sturnus vulgaris). Birds that experienced an unpredictable food supply early in life produced a significantly smaller repertoire of song phrases than those with a constant food supply. Social status during development was also significantly correlated with repertoire size, with dominant birds producing more phrase types. This study therefore provides novel evidence that social as well as nutritional history may be important in shaping the song signal in this species.
C J Feare - One of the best experts on this subject based on the ideXlab platform.
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Is the distribution of Starlings Sturnus vulgaris within roosts determined by competition
Ibis, 2008Co-Authors: C J Feare, Elaine L. Gill, Helen V Mckay, Julie D BishopAbstract:Observations were made in five aviaries to determine the role of competition in roost site selection by captive Starlings Sturnus vulgaris. Their behaviour in selecting perches in a simple roost “tree” indicated that (1) a dominance hierarchy exists in birds selecting roosting locations, (2) the roost positions occupied are determined through competition, (3) higher and inner roost positions are preferred over others and (4) dominant Starlings tend to occupy these most preferred positions.
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Intraspecific nest parasitism in Starlings Sturnus vulgaris: effects of disturbance on laying females
Ibis, 2008Co-Authors: C J FeareAbstract:Female Starlings Sturnus vulgaris that laid distinctive eggs at Worplesdon, Surrey, in 1988 and 1989 were made to desert their partially completed first clutches by removing their eggs part way through the laying sequence. Most of these Starlings continued to lay, but in other Starlings' nests, and most of them subsequently laid a replacement clutch that they reared themselves. Using estimates of the success of nests in the colony over 14 breeding seasons, it is concluded that intraspecific nest parasitism offers a means of maximizing annual chick production in the event of disturbance causing the loss of first-clutch eggs.
Romina Valente - One of the best experts on this subject based on the ideXlab platform.
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Helminth parasites of the European starling (Sturnus vulgaris) (Aves, Sturnidae), an invasive bird in Argentina
Parasitology research, 2014Co-Authors: Romina Valente, Diego Montalti, Lucía Mariel Ibañez, Eliana Andrea Lorenti, Vanina D. Fiorini, Julia Inés DiazAbstract:The aim of this work is to contribute to the knowledge of gastrointestinal parasites of the European starling Sturnus vulgaris, an invasive bird from Argentina. Seventy-six birds were collected during the spring of 2007 and were examined for helminths. Six parasite species were found: one trematoda of the Echinostoma revolutum “group,” four nematodes (Synhimantus nasuta, Microtetrameres sp., Pterothominx exilis, and Ornithocapillaria ovopunctata), and one acanthocephalan (Plagiorhynchus cylindraceus). All species found have been recorded in Eurasia and/or North America previously, although present reports enlarge their geographical distribution. As expected in an invasive host, the parasite community shows much lower species richness (n = 6) than those observed in their native area (79 and 35 in the Eurasia and North America, respectively).
