Document Detail

Strategic 3-hydroxy-2-butanone release in the dominant male lobster cockroach, Nauphoeta cinerea.
MedLine Citation:
PMID:  17585357     Owner:  NLM     Status:  MEDLINE    
In the lobster cockroach Nauphoete cinerea, the dominant-subordinate hierarchy formed via the agonistic interactions is unstable, and changes in rank order are common. Our previous results showed that in the first encounter fight during initial rank formation, microgram levels of 3H-2B are released by the aggressive posture (AP)-adopting dominant male. In the present study, the pattern of daily pheromone (3H-2B) release during the domination period and on the day of rank switch, rank duration, and rank switch frequency were investigated in three-male groups and six-male groups to examine the effect of higher frequency of agonistic encounters. The results showed that, in the three-male groups (50-day observation period), daily 3H-2B release rate was not constant, but fluctuated, the average duration of dominant rank was 16.6 +/- 2.0 days, rank switch occurred in 58.8% of groups, and the frequency of rank switching (average number of rank switches/group/50 days) was 1.4 +/- 0.2. For the six-male groups (30-day observation period), the daily 3H-2B release rate also fluctuated, but the duration of dominant rank was significantly shorter at 4.2 +/- 0.6 days, rank switch occurred in 100% of groups, and the frequency of rank switching (average number of rank switches/group/30 days) was significantly higher at 6.9 +/- 0.6. The results for both sets of male groups showed that as a new rank formed (either on the first encounter day or on the day of rank switching), the dominant status was significantly associated with a higher 3H-2B release rate. In the animal kingdom, fighting usually involves communication or the exchange of signals, and the results of this study indicated that the fluctuating daily 3H-2B release rate adopted by the dominants is a kind of strategic release and the 3H-2B release rate is a signal used to determine dominance.
Shu-Chun Chen; Rou-Ling Yang; Hsiao-Yung Ho; Szu-Ying Chou; Rong Kou
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2007-06-22
Journal Detail:
Title:  Die Naturwissenschaften     Volume:  94     ISSN:  0028-1042     ISO Abbreviation:  Naturwissenschaften     Publication Date:  2007 Nov 
Date Detail:
Created Date:  2007-10-03     Completed Date:  2008-01-23     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0400767     Medline TA:  Naturwissenschaften     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  927-33     Citation Subset:  IM    
Section of Biometry, Department of Agronomy, College of Bioresources and Agriculture, National Taiwan University, Taipei, Taiwan, 116, Republic of China.
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MeSH Terms
Acetoin / metabolism*
Cockroaches / physiology*
Pheromones / secretion*
Sex Characteristics
Sexual Behavior, Animal
Social Dominance*
Reg. No./Substance:
0/Pheromones; 513-86-0/Acetoin

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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