Seasonal biotic and abiotic factors affecting hunting strategy in free-living Saharan sand vipers, Cerastes vipera

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• 作者：Sefi J.A. Horesh^a ; ^b ; Jaim Sivan^c ; ^d ; Avi Rosenstrauch^c ; Itay Tesler^b ; ^e ; A. Allan Degen^e ; Michael Kam^e ; ^{mkam@bgu.ac.il}
• 关键词：Active hunting ; Adaptive function ; Body condition index ; Hunting strategy ; Sit-and-wait ambush ; Zeitgebers ; Chronobiology
• 刊名：Behavioural Processes
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：135
• 期：Complete
• 页码：40-44
• 全文大小：911 K
• 卷排序：135

文摘

Day length change and body condition index (BCI) shaped hunting strategy. BCI of active hunters was higher than that of sit-and-wait foragers. The proportion of active hunters increased from 5% in April to over 30% in October. The proportion of active vipers increased with age. Vulnerable neonates only employed sit-and-wait ambush as a hiding technique.