Population density,distribution,and incidental catches of bottlenose dolphins in Xiamen-Dongshan waters of the Taiwan Strait

作者：Zhou Kai · 年份：2000 · 被引用次数：7 · 研究领域：Marine animal studies overview

The population density of bottlenose dolphins (aduncus)in Xiamen Dongshan water of the Taiwan Strait is 0.0436±0.0286 individuals/km 2.The sighting frequency of bottlenose dolphins in the southern part of the water is higher than those in the middle and northern parts of the water.Questionnaire survey and on board observation indicated that the sighting rate and incidental catch rate of small cetaceans of purse net is higher than that of trawl net,whereas that of trawl net is higher than that of gillnets.Totally 20 individuals of small cetaceans were incidentally captured from Dongshan Ports during our study.Among them 6(30%) were bottlenose dolphins,and they were captured by trawl net (2 individuals) and purse net (4 individuals).It is necessary to educate the local fishermen to realize the importance of marine mammal conservation,and enhance the studies on the population biology of bottlenose dolphins in the Taiwan Strait.