TY - JOUR
T1 - Individual- and condition-dependent effects on habitat choice and choosiness
AU - Pruitt, Jonathan N.
AU - DiRienzo, Nicholas
AU - Kralj-Fišer, Simona
AU - Johnson, James
AU - Sih, Andrew
N1 - Funding Information:
Acknowledgments We would like to thank Stephanie Kamel, Kyle Demes, Mark Hauber, and two anonymous reviewers for their helpful comments on previous versions of this manuscript. SKF was supported by Humboldt fellowship for postdoctoral researchers. Funds for this project were awarded by a fellowship from the Center for Population Biology to JNP.
PY - 2011/10
Y1 - 2011/10
N2 - Research on consistent individual differences in behavior, or "behavioral syndromes", continues to grow rapidly, and yet, the aspects of behavior under consideration have remained remarkably limited. Here, we consider individual variation in consistency of choice (termed here "choosiness"), as expressed during habitat choice. We repeatedly tested the responses of female Western Black Widows, Latrodectus hesperus, to two cues of habitat quality: prey chemical cues and variation in web site illuminance. We estimated females' response by the distance they positioned themselves from (1) the source of prey chemical cues and (2) the darkest edge of our test arena. Individuals with low variance in their responses are deemed more "choosy", whereas individuals with high variance are deemed less "choosy". Generally, most females initiated web construction near the source of the prey chemical cues and tended to place themselves in low-light conditions. However, we detected strong, repeatable differences in females' intensity of response, and within-individual variance of response (i.e., choosiness) was correlated across situations: females with highly consistent responses towards cricket chemical cues also exhibited highly consistent responses towards variation in light conditions. When deprived of food for extended periods, females were indistinguishable in their responses towards prey chemical cues, but tended to initiate web construction in brighter lighting conditions. Food-deprived females universally exhibited higher variance and diminished consistency in their responses (i.e., they were less choosy). Additionally, higher choosiness was associated with greater mass loss during choice trials, suggesting choosiness is energetically costly. Our results demonstrate that consistency of response to environmental cues is yet another element of behavior that varies among individuals and variation in choosiness could beget speed/quality trade-offs during animal decision making.
AB - Research on consistent individual differences in behavior, or "behavioral syndromes", continues to grow rapidly, and yet, the aspects of behavior under consideration have remained remarkably limited. Here, we consider individual variation in consistency of choice (termed here "choosiness"), as expressed during habitat choice. We repeatedly tested the responses of female Western Black Widows, Latrodectus hesperus, to two cues of habitat quality: prey chemical cues and variation in web site illuminance. We estimated females' response by the distance they positioned themselves from (1) the source of prey chemical cues and (2) the darkest edge of our test arena. Individuals with low variance in their responses are deemed more "choosy", whereas individuals with high variance are deemed less "choosy". Generally, most females initiated web construction near the source of the prey chemical cues and tended to place themselves in low-light conditions. However, we detected strong, repeatable differences in females' intensity of response, and within-individual variance of response (i.e., choosiness) was correlated across situations: females with highly consistent responses towards cricket chemical cues also exhibited highly consistent responses towards variation in light conditions. When deprived of food for extended periods, females were indistinguishable in their responses towards prey chemical cues, but tended to initiate web construction in brighter lighting conditions. Food-deprived females universally exhibited higher variance and diminished consistency in their responses (i.e., they were less choosy). Additionally, higher choosiness was associated with greater mass loss during choice trials, suggesting choosiness is energetically costly. Our results demonstrate that consistency of response to environmental cues is yet another element of behavior that varies among individuals and variation in choosiness could beget speed/quality trade-offs during animal decision making.
KW - Aggression
KW - Choice experiment
KW - Habitat selection
KW - Rapid environmental change
KW - Theridiidae
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U2 - 10.1007/s00265-011-1208-0
DO - 10.1007/s00265-011-1208-0
M3 - Article
AN - SCOPUS:80052765359
SN - 0340-5443
VL - 65
SP - 1987
EP - 1995
JO - Behavioral Ecology and Sociobiology
JF - Behavioral Ecology and Sociobiology
IS - 10
ER -