首页 | 本学科首页   官方微博 | 高级检索  
     


Refuge size preference in the field cricket Gryllus bimaculatus
Authors:Okada Jiro  Mizuta Shogo  Toh Yoshihiro
Affiliation:Department of Biology, Graduate School of Sciences, Kyushu University, Fukuoka 812-8581, Japan. jokata@nagasaki-u.ac.jp
Abstract:
Size preference for artificial refuges was examined in the adult field cricket Gryllus bimaculatus under laboratory conditions. Blinded crickets were placed individually in a container consisting of a circular arena and six different-sized artificial refuges (triangular tent-like shelters). The crickets were allowed to walk freely inside the container for a constant period. Size preference was evaluated by determining cumulative stay period in each shelter. When the depth of the shelters varied from 60 to 160 mm at 20-mm intervals, and the width was fixed at 30 mm, both males and females tended to remain in relatively longer shelters (≥ 140 mm). Females, in particular, exhibited a distinct preference for the longest shelter (160 mm). The width of the shelters was then varied from 20 to 40 mm at 4-mm intervals, and the depth was fixed at 100 mm. Although males did not show selectivity to specific shelters, females tended to select a shelter with a particular width (32 mm). These results suggest that adults of G. bimaculatus have size preferences for refuges under blinded conditions. However, the preferences may involve sexual differences as well.
Keywords:
本文献已被 PubMed 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号