Movements and feeding ecology of immature green turtles (Chelonia mydas) in a Florida Lagoon
Movements and feeding ecology of immature green turtles (Chelonia mydas) in a Florida Lagoon
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佛罗里达泻湖中未成熟绿海龟 (Chelonia mydas) 的运动和摄食生态
DOI：
10.2307/1445104
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发表时间：
1983
期刊：
影响因子：
2.6
通讯作者：
Mary T. Mendonsa
中科院分区：
文献类型：
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作者：
Mary T. Mendonsa
利用声波遥测技术对佛罗里达Moscow Lagoon的14只绿色海龟（Chelonia mydas）的季节和昼夜活动进行了监测。本研究亦利用解剖及胃冲洗技术，探讨此族群之摄食生态。未成熟的绿色海龟随机，长距离的运动（x = 8.2公里/天），并占据较深的沃茨（x = 1.6米），显然不进食，当水温范围从11-18摄氏度;在水温高于25摄氏度，他们采用了一个家的范围。海龟在高达34摄氏度的温度下活动。没有昼夜模式是明显的，在冬季，但一个明确的双峰模式是明显的，在高水温，与绿色海龟在上午和下午三点左右的草地上觅食，并在中午移动到更深的沃茨。家域面积与体重呈显著正相关，而放牧活动中心与体重无显著相关。海草占海龟全年食物的88%。
The seasonal and diel movements of 14 green turtles (Chelonia mydas) in Mosquito Lagoon, Florida were monitored using sonic telemetry. The feeding ecology of this population was also studied using dissection and stomach flushing techniques. Immature green turtles made random, long distance movements (x = 8.2 km/day) and occupied deeper waters (x = 1.6 m), apparently not feeding, when water temperatures ranged from 11-18 C; at water temperatures above 25 C they adopted a home range. Turtles were active at temperatures up to 34 C. No diel pattern was evident during winter months, but a definite bimodal pattern was evident at high water temperatures, with green turtles feeding on grass flats in midmorning and midafternoon and moving into deeper waters during the midday hours. Home range area was significantly correlated with body weight but the center of grazing activity was not. Seagrasses made up 88% of the turtles' diet throughout the year.