美国佛罗里达州棕榈滩县野生玳瑁龟(Eretmochelys imbricata)的觅食行为

IF 0.9 4区生物学 Q3 ZOOLOGY

Chelonian Conservation and Biology Pub Date : 2017-05-19 DOI:10.2744/CCB-1242.1

Lawrence D. Wood, S. Milton, T. Maple

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引用次数: 8

摘要

摘要在佛罗里达州棕榈滩县的珊瑚礁上，用水肺潜水器记录了30只野生玳瑁(Eretmochelys briicata)的觅食行为。建立了过渡矩阵，计算了导致猎物摄食的5种行为类别的顺序和频率，并描述了与觅食行为相关的一般观察结果。可能是在嗅觉的帮助下，这个地方的鹰采用了一个多步骤的过程来优先定位和摄入隐藏良好的无根无脊椎动物，特别是Demospongiae类的多孔动物。累积起来，行为频率随着捕食顺序的进展而下降，并且只有一小部分被处理的物品被摄入。高度探索性的觅食行为可以帮助玳瑁适应地识别和优先考虑栖息地类型内和不同的饮食偏好。

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Foraging Behavior of Wild Hawksbill Turtles (Eretmochelys imbricata) in Palm Beach County, Florida, USA

Abstract Foraging behavior from 30 wild hawksbill turtles (Eretmochelys imbricata) was video-recorded by scuba divers on the coral reefs of Palm Beach County, Florida. A transition matrix was created to calculate the sequence and frequency of 5 behavioral categories leading to prey ingestion, and general observations associated with foraging behavior were described. Likely aided by olfaction, the hawksbills at this site employed a multistep process to preferentially locate and ingest well-concealed sessile invertebrates, notably poriferans of the class Demospongiae. Cumulatively, behavioral frequencies decreased as the sequence progressed toward prey consumption, and only a small proportion of the items handled were ingested. Highly exploratory foraging behavior may aid hawksbills to adaptively identify and prioritize dietary preferences within and among habitat types.

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来源期刊

Chelonian Conservation and Biology 生物-动物学

CiteScore

1.70

自引率

14.30%

发文量

审稿时长

>12 weeks

期刊介绍： Chelonian Conservation and Biology is a biannual peer-reviewed journal of cosmopolitan and broad-based coverage of all aspects of conservation and biology of all chelonians, including freshwater turtles, marine turtles, and tortoises. Manuscripts may cover any aspects of turtle and tortoise research, with a preference for conservation or biology. Manuscripts dealing with conservation biology, systematic relationships, chelonian diversity, geographic distribution, natural history, ecology, reproduction, morphology and natural variation, population status, husbandry, community conservation initiatives, and human exploitation or conservation management issues are of special interest.