FIGHTING SUCCESS IN RELATION TO BODY-MASS AND DRUMMING ACTIVITY IN THE MALE WOLF SPIDER HYGROLYCOSA-RUBROFASCIATA

Citation
J. Kotiaho et al., FIGHTING SUCCESS IN RELATION TO BODY-MASS AND DRUMMING ACTIVITY IN THE MALE WOLF SPIDER HYGROLYCOSA-RUBROFASCIATA, Canadian journal of zoology, 75(9), 1997, pp. 1532-1535
Citations number
26
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Zoology
Journal title
ISSN journal
0008-4301
Volume
75
Issue
9
Year of publication
1997
Pages
1532 - 1535
Database
ISI
SICI code
0008-4301(1997)75:9<1532:FSIRTB>2.0.ZU;2-Z
Abstract
In the wolf spider Hygrolycosa rubrofasciata, males court females by d rumming dry leaves with their abdomen. Females prefer to mate with the most actively drumming males, and courtship drumming activity is also positively correlated with male viability. However, body mass of the males seems to have only a minor, if any, effect on female choice or m ale viability. There is also no correlation between male body mass and courtship drumming activity. We studied the effect of body mass and c ourtship drumming activity on the outcome of agonistic encounters betw een male H. rubrofasciata. For this purpose, males and females were ra ndomly placed in a plastic arena, where male courtship drumming activi ty and agonistic encounters were recorded. Large differences in body m ass and drumming activity between two rivals seemed to independently i ncrease the probability of the larger or more active males winning. We conclude that while courtship drumming activity affects the fighting success of the males, and body mass more so, male-male interactions ma y not be of major importance in sexual selection of H. rubrofasciata.