克氏原螯虾掘洞行为研究  

A Study on Burrowing Behavior of Procambarus clarkii

作　　者：龚世园[1] 李浪平[1] 吕建林[1] 张训蒲[1] 何绪刚[1] 熊传喜[1] 

机构地区：[1]华中农业大学水产学院,武汉430070

出　　处：《淡水渔业》2007年第6期3-7,共5页Freshwater Fisheries

基　　金：湖北省重大攻关项目(05AA205B0106AA203A03)

摘　　要：克氏原螯虾（Procambarus clarkii）掘洞时间多在夜间，可持续掘洞6-8h，一夜挖掘深度成虾可达40cm．幼虾可达25cm。成虾的洞穴深度大部分在50-80cm之间，少部分可以达到80-150cm；幼虾洞穴的深度在10-25cm之间；体长1．2cm的稚虾已经具备掘洞的能力，洞穴深度在10-20cm之间。洞穴分为简单洞穴和复杂洞穴两种：85％的洞穴是简单的，即只有一条穴道，位于水面上、下10cm之间；15％较复杂，即有2条以上的穴道，位于水面以上20cm处。洞穴的密度为2．8-5．6个／m^2。每个洞穴中一般有1-2只虾，但冬季也常发现一个洞中有3-5只虾。克氏原螯虾在繁殖季节掘洞强度增大，在寒冷的冬季，掘洞强度微弱。Procambarus clarkii burrowed more at night, and lasted for 6-8 h. The depth of burrows was 30 - 40 cm for the adult and 20 - 25 cm for the young over one night. The depth of burrows for most adults was 50 - 80 cm, some even reached 80 - 150 cm, the depth of burrows for the young was 10 - 25 cm. The juveniles which were 1.2 cm in length already had the capacity of burrowing, and the depth of burrows of them could reach 10 - 20 cm. The burrows could be divided into two types： the simple and the complex. About 85% burrows was the simple, which had only one tunnel, and 10 cm above or below the horizontal line, and 15% was the complex, which had more than two tunnels and 20 cm above the horizontal line. The density of the burrow was 2. 8/m^2 - 5.6/m^2. 1 - 2 individuals could be found in each burrow in whole year, and usually 3 - 5 individuals in winter. The burrowing intensity was the highest in breeding season. As the temperature decreased, it also decreased gradually. It became very weak in winter.

关 键 词：克氏原螯虾(Procambarus clarkii) 掘洞行为 

分 类 号：Q958.118[生物学—动物学]