Multiple paternity and sperm competition in the sibling species Drosophila buzzatii and Drosophila koepferae
Sperm competition (SC) is a major component of sexual selection that enhances intra- and intersexual conflicts and may trigger rapid adaptive evolution of sexual characters. The actual role of SC on rapid evolution, however, is poorly understood. Besides, the relative contribution of distinctive fea...
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todo:paper_09621083_v22_n19_p5016_Hurtado2023-10-03T15:54:12Z Multiple paternity and sperm competition in the sibling species Drosophila buzzatii and Drosophila koepferae Hurtado, J. Iglesias, P.P. Lipko, P. Hasson, E. mating system polyandry sexual selection sperm competition sperm precedence sperm usage microsatellite DNA animal article comparative study Drosophila female fertility genetic variability genetics genotype male mating system physiology polyandry reproduction sexual behavior sexual selection sperm competition sperm precedence sperm usage spermatozoon mating system polyandry sexual selection sperm competition sperm precedence sperm usage Animals Drosophila Female Fertility Genetic Variation Genotype Male Microsatellite Repeats Reproduction Sexual Behavior, Animal Spermatozoa Sperm competition (SC) is a major component of sexual selection that enhances intra- and intersexual conflicts and may trigger rapid adaptive evolution of sexual characters. The actual role of SC on rapid evolution, however, is poorly understood. Besides, the relative contribution of distinctive features of the mating system to among species variation in the strength of SC remains unclear. Here, we assessed the strength of SC and mating system factors that may account for it in the closely related species Drosophila buzzatii and Drosophila koepferae. Our analyses reveal higher incidence of multiple paternity and SC risk in D. buzzatii wild-inseminated females. The estimated number of fathers per brood was 3.57 in D. buzzatii and 1.95 in D. koepferae. In turn, the expected proportion of females inseminated by more than one male was 0.89 in D. buzzatii and 0.58 in D. koepferae. Laboratory experiments show that this pattern may be accounted for by the faster rate of stored sperm usage observed in D. koepferae and by the greater female remating rate exhibited by D. buzzatii. We also found that the male reproductive cost of SC is also higher in D. buzzatii. After a female mated with a second male, first-mating male fertility was reduced by 71.4% in D. buzzatii and only 33.3% in D. koepferae. Therefore, we may conclude that postmating sexual selection via SC is a stronger evolutionary force in D. buzzatii than in its sibling. © 2013 John Wiley & Sons Ltd. Fil:Hurtado, J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Lipko, P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Hasson, E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_09621083_v22_n19_p5016_Hurtado |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
mating system polyandry sexual selection sperm competition sperm precedence sperm usage microsatellite DNA animal article comparative study Drosophila female fertility genetic variability genetics genotype male mating system physiology polyandry reproduction sexual behavior sexual selection sperm competition sperm precedence sperm usage spermatozoon mating system polyandry sexual selection sperm competition sperm precedence sperm usage Animals Drosophila Female Fertility Genetic Variation Genotype Male Microsatellite Repeats Reproduction Sexual Behavior, Animal Spermatozoa |
| spellingShingle |
mating system polyandry sexual selection sperm competition sperm precedence sperm usage microsatellite DNA animal article comparative study Drosophila female fertility genetic variability genetics genotype male mating system physiology polyandry reproduction sexual behavior sexual selection sperm competition sperm precedence sperm usage spermatozoon mating system polyandry sexual selection sperm competition sperm precedence sperm usage Animals Drosophila Female Fertility Genetic Variation Genotype Male Microsatellite Repeats Reproduction Sexual Behavior, Animal Spermatozoa Hurtado, J. Iglesias, P.P. Lipko, P. Hasson, E. Multiple paternity and sperm competition in the sibling species Drosophila buzzatii and Drosophila koepferae |
| topic_facet |
mating system polyandry sexual selection sperm competition sperm precedence sperm usage microsatellite DNA animal article comparative study Drosophila female fertility genetic variability genetics genotype male mating system physiology polyandry reproduction sexual behavior sexual selection sperm competition sperm precedence sperm usage spermatozoon mating system polyandry sexual selection sperm competition sperm precedence sperm usage Animals Drosophila Female Fertility Genetic Variation Genotype Male Microsatellite Repeats Reproduction Sexual Behavior, Animal Spermatozoa |
| description |
Sperm competition (SC) is a major component of sexual selection that enhances intra- and intersexual conflicts and may trigger rapid adaptive evolution of sexual characters. The actual role of SC on rapid evolution, however, is poorly understood. Besides, the relative contribution of distinctive features of the mating system to among species variation in the strength of SC remains unclear. Here, we assessed the strength of SC and mating system factors that may account for it in the closely related species Drosophila buzzatii and Drosophila koepferae. Our analyses reveal higher incidence of multiple paternity and SC risk in D. buzzatii wild-inseminated females. The estimated number of fathers per brood was 3.57 in D. buzzatii and 1.95 in D. koepferae. In turn, the expected proportion of females inseminated by more than one male was 0.89 in D. buzzatii and 0.58 in D. koepferae. Laboratory experiments show that this pattern may be accounted for by the faster rate of stored sperm usage observed in D. koepferae and by the greater female remating rate exhibited by D. buzzatii. We also found that the male reproductive cost of SC is also higher in D. buzzatii. After a female mated with a second male, first-mating male fertility was reduced by 71.4% in D. buzzatii and only 33.3% in D. koepferae. Therefore, we may conclude that postmating sexual selection via SC is a stronger evolutionary force in D. buzzatii than in its sibling. © 2013 John Wiley & Sons Ltd. |
| format |
JOUR |
| author |
Hurtado, J. Iglesias, P.P. Lipko, P. Hasson, E. |
| author_facet |
Hurtado, J. Iglesias, P.P. Lipko, P. Hasson, E. |
| author_sort |
Hurtado, J. |
| title |
Multiple paternity and sperm competition in the sibling species Drosophila buzzatii and Drosophila koepferae |
| title_short |
Multiple paternity and sperm competition in the sibling species Drosophila buzzatii and Drosophila koepferae |
| title_full |
Multiple paternity and sperm competition in the sibling species Drosophila buzzatii and Drosophila koepferae |
| title_fullStr |
Multiple paternity and sperm competition in the sibling species Drosophila buzzatii and Drosophila koepferae |
| title_full_unstemmed |
Multiple paternity and sperm competition in the sibling species Drosophila buzzatii and Drosophila koepferae |
| title_sort |
multiple paternity and sperm competition in the sibling species drosophila buzzatii and drosophila koepferae |
| url |
http://hdl.handle.net/20.500.12110/paper_09621083_v22_n19_p5016_Hurtado |
| work_keys_str_mv |
AT hurtadoj multiplepaternityandspermcompetitioninthesiblingspeciesdrosophilabuzzatiianddrosophilakoepferae AT iglesiaspp multiplepaternityandspermcompetitioninthesiblingspeciesdrosophilabuzzatiianddrosophilakoepferae AT lipkop multiplepaternityandspermcompetitioninthesiblingspeciesdrosophilabuzzatiianddrosophilakoepferae AT hassone multiplepaternityandspermcompetitioninthesiblingspeciesdrosophilabuzzatiianddrosophilakoepferae |
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1807319312110714880 |