鼎突多刺蚁取食习性的观察

在浙江省永康县城东南10km的山坡上,观察了鼎突多刺蚁的取食习性,发现它主要取食蚜和蚧的分泌物、小昆虫活体或大昆虫的尸体.回巢工蚁中有47.7％的工蚁在嗉囊内携带食物,在上颚间携带食物者有6.8％,不携带食物的工蚁为45.6％.5～6月和9～11月,工蚁取食率较高,7～8月因气候炎热而取食率较低.工蚁的取食道路很明显,邻近蚁巢问取食道路联成网络,成一个取食整体.不移巢或不分巢时的取食道路常较固定,每条取食道路上的工蚁也较固定.

Observations of the Foraging Behaviour of the Spined Ant Polyrhachis vicina Roger (Hymenoptcra; Formicidae)

This paper reports studies on the foraging behaviour of the spined ant, Polyrhachis vicina Roger. Observations were mainly carried out at hillsides 10 kilometers southeast of Yongkang county, Zhejiang province. P. vicina mainly fed on insects, other animals and honeydews from aphis and coccids; 47.7% of foragers carried food in their crops, 6.8% of foragers carried food between their mandibles, 45.0% of foragers didn't carry food. Foraging efficiency of workers was high in May, June, September, October, and November, and low in July and August. Workers had evident trunk routes for foraging, the routes among the nests connected together to form a complicated foraging net. The routes did not change and the workers on various routes did not exchange very much if individuals of the nests didn't remove or divide.