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Male mate choice in a sexually cannibalistic widow spider
Year:
2018
Source of publication :
Animal Behaviour
Authors :
הררי, אלי
;
.
Volume :
137
Co-Authors:

Waner, S.; Motro, U.; Lubin, Y.

Facilitators :
From page:
189
To page:
196
(
Total pages:
8
)
Abstract:

Males of the brown widow spider, Latrodectus geometricus (Theridiidae), invest energy in courtship displays and are often cannibalized after mating; accordingly, partial sex role reversal is expected. In this species, subadult females are able to mate and produce viable offspring. In contrast to mature females, these subadult females do not cannibalize their mates after copulation. Nevertheless, when given a choice, males preferred mature over subadult females and older over young mature females. We found no benefit for males in mating with the females of their choice. Older females were significantly less fecund than young mature females, and were not more fecund than subadult females. We tested possible advantages in mating with cannibalistic (mature) females, such as an increased probability of plugging the female's genital duct or longer copulations, or disadvantages in mating with subadult females, such as higher remating risk. None of these explanations was supported. Thus, we lack an adaptive explanation for male preference for mature older females. We suggest that older females produce more pheromone to attract males and that males are thus misled into mating with older, more aggressive and less fecund females. © 2018 The Association for the Study of Animal Behaviour

Note:
Related Files :
animal behavior
Araneae
brown widow spider
courtship
Latrodectus geometricus
Mate choice
sexual cannibalism
Theridiidae
עוד תגיות
תוכן קשור
More details
DOI :
https://doi.org/10.1016/j.anbehav.2018.01.016
Article number:
0
Affiliations:

Department of Ecology, Evolution and Behavior and Federmann Center for the Study of Rationality, The Hebrew University of Jerusalem, Jerusalem, Israel; Department of Desert Ecology, Ben Gurion University of the Negev, Midreshet Ben Gurion, Israel; Department of Entomology, The Volcani Center, Rishon Lezion, Israel

Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
36351
Last updated date:
02/03/2022 17:27
Creation date:
05/08/2018 09:57
Scientific Publication
Male mate choice in a sexually cannibalistic widow spider
137

Waner, S.; Motro, U.; Lubin, Y.

Male mate choice in a sexually cannibalistic widow spider

Males of the brown widow spider, Latrodectus geometricus (Theridiidae), invest energy in courtship displays and are often cannibalized after mating; accordingly, partial sex role reversal is expected. In this species, subadult females are able to mate and produce viable offspring. In contrast to mature females, these subadult females do not cannibalize their mates after copulation. Nevertheless, when given a choice, males preferred mature over subadult females and older over young mature females. We found no benefit for males in mating with the females of their choice. Older females were significantly less fecund than young mature females, and were not more fecund than subadult females. We tested possible advantages in mating with cannibalistic (mature) females, such as an increased probability of plugging the female's genital duct or longer copulations, or disadvantages in mating with subadult females, such as higher remating risk. None of these explanations was supported. Thus, we lack an adaptive explanation for male preference for mature older females. We suggest that older females produce more pheromone to attract males and that males are thus misled into mating with older, more aggressive and less fecund females. © 2018 The Association for the Study of Animal Behaviour

Scientific Publication
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