Sperm allocation and cost of mating in a tropical tephritid fruit fly.
Males that copulate repeatedly may suffer from reduced sperm stores. However, few studies have addressed sperm depletion from both the female and male perspective. Here, we show that male Anastrepha obliqua (Diptera: Tephritidae) do not ejaculate all available sperm and are left with mature sperm in...
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| Format: | info:eu-repo/semantics/article |
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Journal insect physiology
2006
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| Online dostop: | http://inecol.repositorioinstitucional.mx/jspui/handle/1005/85 |
| _version_ | 1799772266754473984 |
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| author | Diana Perez-Staples Martín Ramón Aluja Schuneman Hofer |
| author_facet | Diana Perez-Staples Martín Ramón Aluja Schuneman Hofer |
| author_sort | Diana Perez-Staples |
| collection | REPO |
| description | Males that copulate repeatedly may suffer from reduced sperm stores. However, few studies have addressed sperm depletion from both the female and male perspective. Here, we show that male Anastrepha obliqua (Diptera: Tephritidae) do not ejaculate all available sperm and are left with mature sperm in the seminal vesicles even after copulating as often as three times in half a day. Ejaculate size was not related to male mating history; time elapsed since the last mating, copulation duration, female thorax length or head width. Larval host origin did not affect the number of sperm stored by females. More sperm was found in the ventral receptacle compared to sperm stored in the three spermathecae. Males apparently do not suffer a cost of mating in terms of longevity, although we cannot rule out other fitness costs. Sperm production in this species may not be as costly as it is for other species. Results suggest that males strategically allocate similar numbers of sperm among successive mates without exhausting sperm reserves for future encounters. We discuss the role that differential sperm storage may have in mediating sperm competition and tie our results to the unique natural history of A. obliqua. |
| format | info:eu-repo/semantics/article |
| id | repo-1005-85 |
| institution | Repositorio INECOL |
| publishDate | 2006 |
| publisher | Journal insect physiology |
| record_format | dspace |
| spelling | repo-1005-852017-11-23T20:58:21Z Sperm allocation and cost of mating in a tropical tephritid fruit fly. Diana Perez-Staples Martín Ramón Aluja Schuneman Hofer Journal insect physiology 2006 info:eu-repo/semantics/article Males that copulate repeatedly may suffer from reduced sperm stores. However, few studies have addressed sperm depletion from both the female and male perspective. Here, we show that male Anastrepha obliqua (Diptera: Tephritidae) do not ejaculate all available sperm and are left with mature sperm in the seminal vesicles even after copulating as often as three times in half a day. Ejaculate size was not related to male mating history; time elapsed since the last mating, copulation duration, female thorax length or head width. Larval host origin did not affect the number of sperm stored by females. More sperm was found in the ventral receptacle compared to sperm stored in the three spermathecae. Males apparently do not suffer a cost of mating in terms of longevity, although we cannot rule out other fitness costs. Sperm production in this species may not be as costly as it is for other species. Results suggest that males strategically allocate similar numbers of sperm among successive mates without exhausting sperm reserves for future encounters. We discuss the role that differential sperm storage may have in mediating sperm competition and tie our results to the unique natural history of A. obliqua. info:eu-repo/classification/cti/2 info:eu-repo/classification/cti/2 http://inecol.repositorioinstitucional.mx/jspui/handle/1005/85 info:eu-repo/semantics/openAccess citation:Pérez Staples D., Aluja M. 2006. Sperm allocation and cost of mating in a tropical tephritid fruit fly. Journal insect physiology. 52: 839-845 http://creativecommons.org/licenses/by-nc-nd/4.0 application/pdf |
| spellingShingle | info:eu-repo/classification/cti/2 info:eu-repo/classification/cti/2 Diana Perez-Staples Martín Ramón Aluja Schuneman Hofer Sperm allocation and cost of mating in a tropical tephritid fruit fly. |
| title | Sperm allocation and cost of mating in a tropical tephritid fruit fly. |
| title_full | Sperm allocation and cost of mating in a tropical tephritid fruit fly. |
| title_fullStr | Sperm allocation and cost of mating in a tropical tephritid fruit fly. |
| title_full_unstemmed | Sperm allocation and cost of mating in a tropical tephritid fruit fly. |
| title_short | Sperm allocation and cost of mating in a tropical tephritid fruit fly. |
| title_sort | sperm allocation and cost of mating in a tropical tephritid fruit fly |
| topic | info:eu-repo/classification/cti/2 info:eu-repo/classification/cti/2 |
| url | http://inecol.repositorioinstitucional.mx/jspui/handle/1005/85 |
| work_keys_str_mv | AT dianaperezstaples spermallocationandcostofmatinginatropicaltephritidfruitfly AT martinramonalujaschunemanhofer spermallocationandcostofmatinginatropicaltephritidfruitfly |
