南京大学学报(自然科学版) ›› 2011, Vol. 47 ›› Issue (5): 635–641.

• • 上一篇    

 克氏原鳌虾在洞穴和角落生境下生长差异及生存策略分析**

 陈婷1，郭建英2，唐建清3 **，黄成1
  

  • 出版日期:2015-04-29 发布日期:2015-04-29
  • 作者简介: (1.南京大学生命科学学院，南京，210093
    2.中国农业科学院植物保护研究所植物病虫害生物学国家重点实验室，北京，1001933
    3.江苏省淡水水产研究所，南京，210017)
  • 基金资助:
     国家公益性行业科研,l项(201003070)

 The differences of growth and living strategies between burrow
and corner habitat in Procambarus clarkii

 Chen Ting1,Guo Jian-Ying2,Tang Jiang-Qing3,Huang Cheng1   

  • Online:2015-04-29 Published:2015-04-29
  • About author: (1 .School of Life Sciences，Nanjing University, Nanjing, 210093，China
    2. State Key Laboratory for Biology of Plant Diseases and insect Pests, institute of Plant Protection
    Chinese Academy of Agricultural Sciences，Beijing, 100193，China;
    3. Freshwater Fisheries Research institute of Jiangsu Province, Nanjing, 210017，China)

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摘要：  为研究克氏原赘虾在不同庇护所生境卜的生长差异及其采取的不同生存策略，木实验在水池中设置洞穴、角落2种庇护所生境，并以无任何庇护所的水池为对照，饲养亚成体克氏原赘虾一个月.计
算各组克氏原赘虾存活、生长的参数及耗饵量、转化率等摄食参数.实验结果表明，存活率指标以洞穴组最高，为84.0%，对照组最小，为22. 000;群体增重、个体增重和转化率指标均以角落组最高，分别为
324. 2 g,10. 3 g, 72. 5 0 o;群体耗饵量以对照组最小，为218.28.木研究得出了不同庇护所生境对克氏原赘虾存活、摄食和生长影响显著的结论.洞穴遮蔽程度最大，能提供最大程度的保护，赘虾多藏匿在洞
中，觅食和打斗行为较少，其采取的生存策略为更利于存活的相对保守型.角落的遮蔽程度较小，其觅食和打斗行为都较多，其采取的生存策略则为更利于生长的相对冒险型.

Abstract:  purpose of the experiment is to find out the differences of crayfish’s growth between different habitats and presume the differences in their living strategics. In the experiment, we set up two types of sheltered living condition for P.
clurkii in the ponds including burrows and corners, and the control group without any shelter. After one month，we calculated the survival rate，total weight gain, individual weight gain. Meanwhile, we obtained data of feeding and
residual bait，and their sum and the growth increment in weight so as to calculate total feed consumption and feed convert ratio. The results indicated that survival rate of the burrow group ranks the highest(84. 0%)，then the
corner group(63.。%)，and then the control group (22. 0%).Concerning the total weight gain, individual weight gain and feed convert ratio, the corner group ranks the first，with significantly higher total weight gain (324. 2 g)，
feed convert ratio (72. 5%)than the other two groups，significantly higher individual weight gain(10. 3 g) than the burrow group.Total feed consumption of the control group is the lowest (248. 2 g) and significantly lower than the
other two groups between which there is no significant difference. Our study indicated that the habitats of shelter have significant effects on the survival，foraging and growth of
P. clarkii. Burrow has the biggest cover area which can provide protection to the greatest degree. Hiden in the burrows P. clarkii live in a relative conservative way, foraging and fighting little, which is good for survival. On
the contrary, the cover area of corner is not as big as burrow, crayfish arc fighting each other for shelter, their foraging and fighting behaviors arc more obvious, their living strategics is relatively more adventurous，which is good for growth.

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