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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Diving behaviour of hawksbill turtles during the inter-nesting interval: Strategies to conserve energy
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Diving behaviour of hawksbill turtles during the inter-nesting interval: Strategies to conserve energy

机译：互interval期间的潜水行为：节约能源的策略

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摘要

Hawksbill sea turtles (Eretmochelys imbricata) nesting in Barbados were outfitted with time-depth recorders (TDRs) with temperature sensors to investigate the form and patterns of diving behaviour during the inter-nesting interval (INI; average 14.7 days). All females, regardless of size, surfaced infrequently during dives of average 56 min duration, and the majority of dives (90%) were spent in the bottom phase at 15-25 m depths, which corresponded to the depth of benthic habitat at each location. Diving activity was highest while commuting to and from the nesting beach (about 1-2 days each way), with a level of quiescence during the intermediate period (i.e. the majority of the INI). Despite little thermal variation in seawater at this latitude (13.1°N), the length of the INI was influenced by ambient sea water temperature. Diving behaviour was consistent with females conserving energy reserves built up at foraging grounds prior to arrival at the nesting beach and minimising time spent in the water column away from safe refuge at night. The frequency of surfacing and the depths at which females spend most of their time varies between sites even within one species and may be crucial in managing the risks to animals temporarily residing offshore from important nesting beaches.
机译：在巴巴多斯筑巢的海龟（Eretmochelys imbricata）配备了带有温度传感器的时深记录仪（TDR），以研究在嵌套间隔（INI；平均14.7天）内潜水行为的形式和模式。所有雌性，无论大小，均在平均56分钟的潜水时间内不频繁浮出水面，并且大多数潜水（90％）都在底部阶段的15-25 m深度停留，这对应于每个位置的底栖生境深度。往返嵌套海滩的潜水活动最高（单程约1-2天），并且在中间阶段（即INI的大部分时间）处于静止状态。尽管在此纬度（13.1°N）下海水的热变化很小，但INI的长度受周围海水温度的影响。潜水行为与女性保持到达储备海滩之前在觅食场积累的能量储备以及使夜间远离安全避难所的水柱中的时间最小化相一致。即使在一个物种内，堆焊的频率和雌性花费大部分时间的深度也有所不同，这对于管理暂时远离重要筑巢海滩的动物暂时面临的风险可能至关重要。

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