Morphological variation in the Common Fiscal Lanius collaris along an altitudinal gradient in southern Africa

Autor:	Shernice Soobramoney, Nigel J. Adams, Colleen T. Downs
Rok vydání:	2005
Předmět:	Altitude biology Lanius collaris Ecology Morphological variation Geographic variation biology.organism_classification Arid Ecology Evolution Behavior and Systematics
Zdroj:	Ostrich: Journal of African Ornithology; Vol 76, No 3 (2005); 130-141
ISSN:	1727-947X 0030-6525
DOI:	10.2989/00306520509485485
Popis:	Geographic variation among four Common Fiscal subpopulations along an altitudinal gradient in South Africa demonstrated significant variation of 13 morphological features and 38 skeletal characters. Common Fiscals were largest in cooler, less humid, more arid areas and smallest in warmer, wetter, more humid localities, supporting Bergmann's Rule. Patterns of variation in morphology, anatomy and skeletal trends were significantly correlated with 11 climatic trends. Cardiopulmonary organ mass and blood haematocrit increased with altitude and reflected adaptations to low ambient temperatures and decreased oxygen pressures associated with high altitudes. These trends are concordant with those reported in various other avian species.Ostrich 2005, 76(3&4): 130–141
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::722d1ba9276c629d852e26bc1aa21eb1 https://doi.org/10.2989/00306520509485485 Zobrazit plný text záznamu