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Distribution of Triturus cristatus camifex (Amphibia: Salamandridae) on São Miguel island (Azores)
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Abstract(s)
Este é o primeiro trabalho sobre a ecologia de Triturus cristatus na ilha de São Miguel (Açores), onde foi introduzido no início deste século. A população açoreana apresenta a pele relativamente lisa, com pouco ponteado branco, ventre alaranjado, com grandes manchas cinzentas-escuras, bem definidas, e uma linha vertebral amarela nas fêmeas, características que a identificam como a subespécie T. cristatus carnifex. Foram mapeados 45 locais onde T. cristatus carnifex foi encontrado na zona central da ilha de São Miguel, entre o sopé ocidental da Serra de Água de Pau e a freguesia das Furnas, entre os 200 e os 700 m de altitude, sobretudo em charcos e bebedoiros, em pastagens. O sucesso desta espécie está relacionado com o aumento da área de pastagem, pelo que a sua conservação, nos Açores, está grandemente dependente da actividade pecuária.
ABSTRACT: This is the first study of the ecology of Triturus cristatus on São Miguel Island (Azores), where it was introduced in the early 1900. Morphological traits of the Azorean population are those expected for the subspecies T. cristatus carnifex, namely relatively smooth skin, reduced white punctuation, orange ventral surface with large, well defined dark spots, a vertebral yellow line in the females and a conspicuous dorsal crest in males. T. cristatus carnifex was found at 45 sites in the central part of São Miguel Island, from the western foot of Serra de Água de Pau to Furnas, between 200-700 m of altitude, mainly in ponds and water basins associated with pastures. The success of this species is related to the expansion of pasture land, so that its conservation, in the Azores, is greatly dependent on cattle raising practices.
ABSTRACT: This is the first study of the ecology of Triturus cristatus on São Miguel Island (Azores), where it was introduced in the early 1900. Morphological traits of the Azorean population are those expected for the subspecies T. cristatus carnifex, namely relatively smooth skin, reduced white punctuation, orange ventral surface with large, well defined dark spots, a vertebral yellow line in the females and a conspicuous dorsal crest in males. T. cristatus carnifex was found at 45 sites in the central part of São Miguel Island, from the western foot of Serra de Água de Pau to Furnas, between 200-700 m of altitude, mainly in ponds and water basins associated with pastures. The success of this species is related to the expansion of pasture land, so that its conservation, in the Azores, is greatly dependent on cattle raising practices.
Description
Keywords
Triturus cristatus carnifex Ilha de São Miguel (Açores) São Miguel Island (Azores) Açores Azores
Citation
"ARQUIPÉLAGO. Ciências Biológicas e Marinhas = Life and Marine Sciences". ISSN 0873-4704. Nº 15A (1997): 97-102