Climate and the Presence of Generation Glands in Female Girdled Lizards: A Case Study of the cordylus-niger-oelofseni Complex
Climate and the Presence of Generation Glands in Female Girdled Lizards: A Case Study of the cordylus-niger-oelofseni Complex
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气候和雌性环带蜥蜴中世代腺的存在：以 Cordylus-niger-oelofseni 复合体为例
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
A. van Niekerk
中科院分区：
文献类型：
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作者：
D. D. du Toit;P. L. F. Mouton;A. Flemming;A. van Niekerk
摘要描述了cordylus-niger-oelofseni复合体雌性蜥蜴生殖腺存在/不存在的地理变异，并研究了与气候变量的相关性。对南非西开普省32°30′S以南和19°45′E以西地区95个地点的保存和活标本进行了检查，以确定是否存在生殖腺。进行GIS分析，以确定平均年最低温度，平均年最高温度，潜在蒸发，平均年降水量，平均年雾，平均年云量为每个地方。判别函数和典型分析表明，存在和不存在的代腺体和六个气候变量中的五个之间的高度显着的相关性。女性从西部沿海地区和从角褶皱山脉普遍缺乏代腺，而女性从内陆低地地区普遍拥有腺体。
Abstract 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.