Long-term climatic trend and body size variation in teal Anas crecca
نویسندگان
چکیده
منابع مشابه
A flyway perspective of foraging activity in Eurasian Green-winged Teal, Anas crecca crecca
Time–activity budgets in the family Anatidae are available for the wintering and breeding periods. We present the first flyway-level study of foraging time in a long-distance migrant, the Eurasian Green-winged Teal, Anas crecca crecca L., 1758 (‘‘Teal’’). Behavioral data from early and late spring staging, breeding, and molting sites were collected with standardized protocols to explore differe...
متن کاملSpread of Avian Influenza Viruses by Common Teal (Anas crecca) in Europe
Since the recent spread of highly pathogenic (HP) H5N1 subtypes, avian influenza virus (AIV) dispersal has become an increasing focus of research. As for any other bird-borne pathogen, dispersal of these viruses is related to local and migratory movements of their hosts. In this study, we investigated potential AIV spread by Common Teal (Anas crecca) from the Camargue area, in the South of Fran...
متن کاملEarly breeding teal Anas crecca use the best lakes and have the highest reproductive success
1) Department of Mathematics and Natural Sciences, Kristianstad University, SE-291 88 Kristianstad, Sweden (e-mail: [email protected]) 2) Department of Applied Biology, University of Helsinki, P.O. Box 27, FI-00014 University of Helsinki, Finland 3) Finnish Game and Fisheries Research Institute, Joensuu Game and Fisheries Research, Yliopistokatu 6, FI-80100 Joensuu, Finland 4) Department...
متن کاملHeteropatric speciation in a duck, Anas crecca.
Heteropatric differentiation is a mode of speciation with gene flow in which divergence occurs between lineages that are in sympatry and allopatry at different times during cyclic spatial movements. Empirical evidence suggests that heteropatric differentiation may prove to be common among seasonally migratory organisms. We examined genetic differentiation between the sedentary Aleutian Islands ...
متن کاملA parapatric propensity for breeding precludes the completion of speciation in common teal (Anas crecca, sensu lato).
Speciation is a process in which genetic drift and selection cause divergence over time. However, there is no rule dictating the time required for speciation, and even low levels of gene flow hinder divergence, so that taxa may be poised at the threshold of speciation for long periods of evolutionary time. We sequenced mitochondrial DNA (mtDNA) and eight nuclear introns (nuDNA) to estimate geno...
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ژورنال
عنوان ژورنال: Wildlife Biology
سال: 2005
ISSN: 0909-6396
DOI: 10.2981/0909-6396(2005)11[81:lctabs]2.0.co;2