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Frequency and consequences of damage to male copulatory organs in a widow spider
Year:
2008
Source of publication :
Journal of Arachnology
Authors :
Harari, Ally
;
.
Volume :
36
Co-Authors:
Segoli, M., Department of Life Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
Lubin, Y., Mitrani Department of Desert Ecology, Jacob Blaustein Institute for Desert Research, Ben-Gurion University of the Negev, Israel
Harari, A.R., Department of Life Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel, Department of Entomology, Agricultural Research Organization, Volcani Center, Bet Dagan, Israel
Facilitators :
From page:
533
To page:
537
(
Total pages:
5
)
Abstract:
Copulatory organ breakage, in which a portion of the male's genitalia breaks off and remains in or attached to the female's genitalia may represent a male strategy of high investment in a single mating. Such a strategy is expected when mating opportunities for males are limited and competition for females is high. We studied costs and benefits for males as a consequence of male organ breakage in the white widow spider (Latrodectus pallidus O. Pickard-Cambridge 1872). In order to estimate the frequency and consequences of such damage we provided each male with four virgin females simultaneously in an outdoors enclosure. We recorded male mating success and loss of the tip of the embolus (the male intromittent organ) inside the female's genitalia for each male. In order to test the effect of the broken tip as a mating plug, we collected females from natural populations and observed the location of embolus tips inside their genitalia. We found that damage to the male organ was frequent but did not necessarily result in male sterility. From the field data, we found that the likelihood of a second embolus tip entering the spermatheca is significantly lower than that of the first tip, suggesting the possibility that the tip functions as a partial mating plug.
Note:
Related Files :
animal behavior
Araneae
Embolus tip
Latrodectus pallidus
Male mating strategy
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More details
DOI :
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
23866
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:03
Scientific Publication
Frequency and consequences of damage to male copulatory organs in a widow spider
36
Segoli, M., Department of Life Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
Lubin, Y., Mitrani Department of Desert Ecology, Jacob Blaustein Institute for Desert Research, Ben-Gurion University of the Negev, Israel
Harari, A.R., Department of Life Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel, Department of Entomology, Agricultural Research Organization, Volcani Center, Bet Dagan, Israel
Frequency and consequences of damage to male copulatory organs in a widow spider
Copulatory organ breakage, in which a portion of the male's genitalia breaks off and remains in or attached to the female's genitalia may represent a male strategy of high investment in a single mating. Such a strategy is expected when mating opportunities for males are limited and competition for females is high. We studied costs and benefits for males as a consequence of male organ breakage in the white widow spider (Latrodectus pallidus O. Pickard-Cambridge 1872). In order to estimate the frequency and consequences of such damage we provided each male with four virgin females simultaneously in an outdoors enclosure. We recorded male mating success and loss of the tip of the embolus (the male intromittent organ) inside the female's genitalia for each male. In order to test the effect of the broken tip as a mating plug, we collected females from natural populations and observed the location of embolus tips inside their genitalia. We found that damage to the male organ was frequent but did not necessarily result in male sterility. From the field data, we found that the likelihood of a second embolus tip entering the spermatheca is significantly lower than that of the first tip, suggesting the possibility that the tip functions as a partial mating plug.
Scientific Publication
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