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PREPUTIAL GLAND OF Rattus rattoides ATTRACTANT FUNCTION AND ITS SEASONAL CHANGE

LiAO Chonghui   

  1. Entomological Institute of Guangdong
  • Online:2011-11-23 Published:2011-11-22

在自然状态下黄毛鼠包皮腺的引诱力及季节变化

廖崇惠   

  1. 广东省昆虫研究所

Abstract: Attractant funtion of preputial gland and its useful possibility are discussed through the method of field attract-catch: squeeze the preputial gland`s secretion out from the adult Rattus rattoides just caught, and insert the straw with secretion's track into the artificial cave in field, and install a mousetrap in the mouth of the cave for catch the same species.The catch ratio of the experiment group has reached to 62%, and the control group is only 15%.Either adult of the same sex or the opposite sex can be seduced by preputial gland's secretion of a female adult,but it is more seductive to the lat-ter than to the former. The seduction of male preputial gland has not marked sexual differnce, which has relation with the male territory behavior.The prcputial gland of adult has more secretion than that of the young which has left its nest. Both volume of secretion and strength of seduction vary with seasons. They are greater between June and August than in April or December.The former seduction coeficient(expcrimcntal catches/control cntches)have reached2.8 and 2.6, and in the latter time It is only 1.3 or 0.8.

摘要: 黄毛鼠(Rattus rattoides Hodgson)包皮腺成对位于下腹部的皮下,腺体开口于尿道口外包皮内的两侧。腺体形态,雌雄各异。雌性呈豆瓣形;雄性呈瓜籽形。体长150毫米以上的成年鼠,其包皮腺的长和宽约18和9毫米。包皮腺是动物的一个外激素释放源,对于种群的调节有着重要的作用(Christiansen & Dving 1975)。关于它的性引诱作用见诸于Bronson & Caroom(1971)、刘炳谦、刘素霞(1979)等。但在自然情况下包皮腺分泌及其引诱作用尚少报道。本文通过野外试验,初步研究了黄毛鼠包皮腺的分泌及引诱力的变化规律,探讨利用此特性的可能性。无疑,这对进一步研究外激素对种群调节作用以及鼠害防治方面是有意义的。