Influence of sex and egg-case presence on predatory behavior of the wolf spider Pardosa valens Barnes (Araneae: Lycosidae)

The wolf spider, Pardosa valens, displayed distinct "sit-and-wait" predatory behaviors during interactions with the smaller, congeneric prey, Pardosa distincta, in experimental chambers. Adult female P. valens, from which the egg cases had been removed, more frequently captured and attempt...

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Bibliographic Details
Published in:The Southwestern naturalist 1992-06, Vol.37 (2), p.132-137
Main Authors: Moring, J.B. (University of North Texas, Denton, TX), Stewart, K.W
Format: Article
Language:English
Subjects:
BEHAVIOUR
Biodiversity & Conservation
BOSQUES
COLORADO
COMPORTAMIENTO
COMPORTEMENT
DEPREDACION
DEPREDADORES
Ecology
Egg masses
Environmental Sciences & Ecology
Female animals
FORESTS
FORET
HIGHLAND
INTERACTIONS
Legs
Life Sciences & Biomedicine
LYCOSIDAE
Male animals
Mating behavior
MOUNTAIN FORESTS
OVA
OVULE
OVULO
PARDOSA DISTINCTA
PREDATEUR
PREDATION
PREDATOR PREY RELATIONS
PREDATORS
REGION D'ALTITUDE
RELACIONES PREDATOR PRESA
RELATION PREDATEUR PROIE
Sample size
Science & Technology
SEX
SEXE
SEXO
Spiders
Wolves
ZONA DE MONTANA
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Description
Summary:The wolf spider, Pardosa valens, displayed distinct "sit-and-wait" predatory behaviors during interactions with the smaller, congeneric prey, Pardosa distincta, in experimental chambers. Adult female P. valens, from which the egg cases had been removed, more frequently captured and attempted to capture prey and had the highest value for a measure of speed or efficiency of capture. Females without egg cases exhibited higher frequencies for those behaviors that were components of the orientation, approach, and capture sequence observed during interactions. The greater frequencies of predatory behaviors displayed by these reproductively mature wolf spiders are predictable for a terrestrial arthropod in a high-elevation, seasonally extreme environment, where energy allocated to a large number of small eggs may be the best strategy.
ISSN:0038-4909
1943-6262
DOI:10.2307/3671661