手机知网 App
24小时专家级知识服务
打 开
生物学
Habitat structure directly affects aggression in convict cichlids Archocentrus nigrofasciatus
<正> Aggressive behavior can be an important factor in determining how animals use and divide space and resources. Previousstudies have shown that aggression in fishes can be influenced by a variety of factors, including water temperature and resourcelevels. In this study, we tested if the amount of habitat structure in the environment affected aggression levels in femaleconvict cichlids Archocentrus nigrofasciatus. We performed a laboratory experiment in which we placed female convict cichlidsinto an aquarium with low or high amounts of habitat structure and monitored the dominant female's behavior toward the subordinatefemale. Aggressive behavior in convict cichlids primarily consists of chases and bites. We found that the total time thedominant female spent chasing the subordinate female was greater when there was a low amount of habitat structure as comparedto when there was a high amount of habitat structure. We also found that both the average duration of a chasing bout and thenumber of bites directed at the subordinate fish increased when there was a low amount of structure, but the number of chases didnot. These results indicate that increased habitat structural complexity decreases aggressive behavior in convict cichlids
1 1
Current Zoology
2010年01期

搜 索