Feeding Choice and the Fate of Organic Materials Consumed by Sesarma Crabs Perisesarma bidens (De Haan) When Offered Different Diets
Feeding Choice and the Fate of Organic Materials Consumed by Sesarma Crabs Perisesarma bidens (De Haan) When Offered Different Diets
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喂养选择和 Sesarma 蟹 Perisesarma bidens (De Haan) 在提供不同饮食时消耗的有机物质的命运
DOI：
10.1155/2010/201932
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发表时间：
2010
影响因子：
--
通讯作者：
M. Tsuchiya
中科院分区：
文献类型：
--
作者：
I. Mchenga;M. Tsuchiya
研究了芝麻蟹在不同饵料条件下的取食偏好：肠Enteromorpha inalis（藻类）、倒花菜Kandelia obovata叶片和繁殖体。采用脂肪酸（FAs）和碳氮比的组合方法评估食物的营养价值、同化和命运。当提供混合饮食时，雄性蟹对藻类的偏好高于叶片和/或繁殖体，而雌性蟹对叶片和藻类的偏好相同，但低于繁殖体。从低碳氮比和高碳氮比来看，藻类的营养价值高于叶片和繁殖体。组织和粪便的脂肪酸比较表明，蟹对饲料中必需脂肪酸的有效吸收顺序为藻类大于叶片和繁殖体。尽管芝麻蟹是红树林的食叶动物，但肠蟹可能是红树林下bidens的重要氮补充来源。
The feeding preference of the sesarmid crab Perisesarma bidens was investigated when offered different diets: Enteromorpha intestinalis (algae), Kandelia obovata leaves, and propagules. Nutritional value of food, its assimilation, and fates were evaluated using a combination approach of the fatty acids (FAs) and C/N ratios. When offered a mixed diet, male crabs preferred algae than leaves and/or propagules, while a female preference was equally for leaves and algae but less than propagules. The nutritional value of algae was higher as indicated by low C : N ratios and high ratios than leaves and propagules. FAs comparison of tissues and faeces indicated that crabs efficiently assimilate essential fatty acids (EFAs) from a given diet in the order of algae greater than leaves and propagules. Despite of sesarmid crabs being a mangrove leaf-eater, E. intestinalis can potentially be important source of nitrogen supplement for P. bidens under mangrove forests.