Climate and the Presence of Generation Glands in Female Girdled Lizards: A Case Study of the cordylus-niger-oelofseni Complex
Geographic variation in the presence/absence of generation glands in female lizards of the cordylus-niger-oelofseni complex was described and correlations with climatic variables investigated. Preserved and live specimens from 95 localities in the area south of 32°30′S and west of 19°45′E in the Wes...
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| Veröffentlicht in: | Journal of herpetology 2005-09, Vol.39 (3), p.384-388 |
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| creator | du Toit, Dahné A Mouton, Ple Fras N Flemming, Alexander F van Niekerk, Adriaan |
| description | Geographic variation in the presence/absence of generation glands in female lizards of the cordylus-niger-oelofseni complex was described and correlations with climatic variables investigated. Preserved and live specimens from 95 localities in the area south of 32°30′S and west of 19°45′E in the Western Cape, South Africa, were examined for the presence or absence of generation glands. A GIS analysis was performed to determine mean annual minimum temperature, mean annual maximum temperature, potential evaporation, mean annual precipitation, mean annual fog, and mean annual cloud cover for each locality. Discriminant function and canonical analyses showed highly significant correlations between presence and absence of generation glands and five of the six climatic variables. Females from western coastal localities and from the Cape Fold Mountains generally lacked generation glands, whereas females from inland lowland localities generally possessed glands. |
| doi_str_mv | 10.1670/218-04A.1 |
| format | Article |
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Preserved and live specimens from 95 localities in the area south of 32°30′S and west of 19°45′E in the Western Cape, South Africa, were examined for the presence or absence of generation glands. A GIS analysis was performed to determine mean annual minimum temperature, mean annual maximum temperature, potential evaporation, mean annual precipitation, mean annual fog, and mean annual cloud cover for each locality. Discriminant function and canonical analyses showed highly significant correlations between presence and absence of generation glands and five of the six climatic variables. 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Preserved and live specimens from 95 localities in the area south of 32°30′S and west of 19°45′E in the Western Cape, South Africa, were examined for the presence or absence of generation glands. A GIS analysis was performed to determine mean annual minimum temperature, mean annual maximum temperature, potential evaporation, mean annual precipitation, mean annual fog, and mean annual cloud cover for each locality. Discriminant function and canonical analyses showed highly significant correlations between presence and absence of generation glands and five of the six climatic variables. Females from western coastal localities and from the Cape Fold Mountains generally lacked generation glands, whereas females from inland lowland localities generally possessed glands.</abstract><pub>Society for the Study of Amphibians and Reptiles</pub><doi>10.1670/218-04A.1</doi><tpages>5</tpages></addata></record> |
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| ispartof | Journal of herpetology, 2005-09, Vol.39 (3), p.384-388 |
| issn | 0022-1511 1937-2418 |
| language | eng |
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| source | BioOne Complete; JSTOR Archive Collection A-Z Listing |
| subjects | Animal glands Climate models Climatology CONTENTS Discriminants Female animals Fog Lacertilia Lizards Lowlands Morphology Skin glands Zoology |
| title | Climate and the Presence of Generation Glands in Female Girdled Lizards: A Case Study of the cordylus-niger-oelofseni Complex |
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