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Prolonged mate guarding and sperm competition in the weevil Diaprepes abbreviatus (L.)
Year:
2003
Source of publication :
Behavioral Ecology
Authors :
הררי, אלי
;
.
Volume :
14
Co-Authors:
Harari, A.R., USDA-ARS, PO Box 14565, Gainesville, FL 32604, United States, Department of Entomology, Volcani Center, Bet Dagan 50250, Israel
Landolt, P.J., USDA-ARS, PO Box 14565, Gainesville, FL 32604, United States, USDA-ARS, Wapato, WA 98951, United States
O'Brien, C.W., Center for Biological Control, Florida A and M University, Tallahassee, FL 32307-4100, United States
Brockmann, H.J., Department of Zoology, University of Florida, Gainesville, FL 32611-8525, United States
Facilitators :
From page:
89
To page:
96
(
Total pages:
8
)
Abstract:
The hypothesis that prolonged copulatory mate guarding coexists with last male sperm precedence was tested for the sugarcane rootstalk borer weevil, Diaprepes abbreviatus (L.) (Coleoptera: Curculionidae). Male D. abbreviatus showed a long copulatory guarding. Both males and females were less likely to remate when prolonged guarding occurred compared with terminating copulation early. Guarding was generally terminated by the struggling behavior of the female. Mating experiments using normal and sterile (X-ray irradiated) males revealed a similar value of last-male sperm precedence for both irradiated and normal males. The P2 values of normal and sterile males were similar when all oviposited eggs were counted over 30 days. These data made it possible to calculate the expected gain to a male from prolonged guarding compared with leaving a female early and seeking out an additional mate. We show that guarding has the higher fitness. Eggs were deposited in clutches in which normal fertilized eggs were grouped together and were attached to a group of sterile eggs. This, together with identifying the form of the cul-de-sac type spermatheca, allowed us to suggest a unique repositioning process, which has not been described elsewhere, as the likely mechanism by which last-male sperm precedence was achieved.
Note:
Related Files :
copulation
Copulation guarding
Cul-de-sac spermathecae
Diaprepes abbreviatus
mate guarding
sperm competition
עוד תגיות
תוכן קשור
More details
DOI :
10.1093/beheco/14.1.89
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
31013
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:59
Scientific Publication
Prolonged mate guarding and sperm competition in the weevil Diaprepes abbreviatus (L.)
14
Harari, A.R., USDA-ARS, PO Box 14565, Gainesville, FL 32604, United States, Department of Entomology, Volcani Center, Bet Dagan 50250, Israel
Landolt, P.J., USDA-ARS, PO Box 14565, Gainesville, FL 32604, United States, USDA-ARS, Wapato, WA 98951, United States
O'Brien, C.W., Center for Biological Control, Florida A and M University, Tallahassee, FL 32307-4100, United States
Brockmann, H.J., Department of Zoology, University of Florida, Gainesville, FL 32611-8525, United States
Prolonged mate guarding and sperm competition in the weevil Diaprepes abbreviatus (L.)
The hypothesis that prolonged copulatory mate guarding coexists with last male sperm precedence was tested for the sugarcane rootstalk borer weevil, Diaprepes abbreviatus (L.) (Coleoptera: Curculionidae). Male D. abbreviatus showed a long copulatory guarding. Both males and females were less likely to remate when prolonged guarding occurred compared with terminating copulation early. Guarding was generally terminated by the struggling behavior of the female. Mating experiments using normal and sterile (X-ray irradiated) males revealed a similar value of last-male sperm precedence for both irradiated and normal males. The P2 values of normal and sterile males were similar when all oviposited eggs were counted over 30 days. These data made it possible to calculate the expected gain to a male from prolonged guarding compared with leaving a female early and seeking out an additional mate. We show that guarding has the higher fitness. Eggs were deposited in clutches in which normal fertilized eggs were grouped together and were attached to a group of sterile eggs. This, together with identifying the form of the cul-de-sac type spermatheca, allowed us to suggest a unique repositioning process, which has not been described elsewhere, as the likely mechanism by which last-male sperm precedence was achieved.
Scientific Publication
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