Comparison of reproductive traits of regular and irradiated male desert locust Schistocerca gregaria (Orthoptera: Acrididae): Evidence of last-male sperm precedence
Summary The sterile insect technique (SIT) is increasingly used to control pest insect populations. The success of SIT control programs depends on the ability to release sterile males and on the capacity of sterile males to compete with wild males to inseminate wild females. In this study, we evalua...
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| Format: | Article |
| Language: | English |
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The Company of Biologists
2012-02-01
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| Series: | Biology Open |
| Subjects: | |
| Online Access: | http://bio.biologists.org/content/1/3/232 |
| _version_ | 1819101896306065408 |
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| author | Severin Dushimirimana Thierry Hance David Damiens |
| author_facet | Severin Dushimirimana Thierry Hance David Damiens |
| author_sort | Severin Dushimirimana |
| collection | DOAJ |
| description | Summary
The sterile insect technique (SIT) is increasingly used to control pest insect populations. The success of SIT control programs depends on the ability to release sterile males and on the capacity of sterile males to compete with wild males to inseminate wild females. In this study, we evaluated the mating performance of Schistocerca gregaria (Försk.) males irradiated with 4 Gray. We compared reproductive traits, such as duration of precopulation time, mating duration, quantity of sperm stored by females after copulation, number of females mated successively and postmating competition of irradiated males with non-irradiated males. Irradiated males were able to mate but the resulting number of offspring was dramatically reduced compared to the average number of offspring observed during a regular mating. During a single copulation, irradiated males transferred fewer sperm than regular males but, theoretically, this quantity is enough to fertilize all the eggs produced by a female during its reproductive life. Irradiated males also had the ability to remove sperm from a previous mating with unirraditated males. This new information on the mating strategies helps explain the post-copulation guarding behaviour of S. gregaria. |
| first_indexed | 2024-12-22T01:25:57Z |
| format | Article |
| id | doaj.art-a4419b99f8294659b753c2cb0d9092c5 |
| institution | Directory Open Access Journal |
| issn | 2046-6390 |
| language | English |
| last_indexed | 2024-12-22T01:25:57Z |
| publishDate | 2012-02-01 |
| publisher | The Company of Biologists |
| record_format | Article |
| series | Biology Open |
| spelling | doaj.art-a4419b99f8294659b753c2cb0d9092c52022-12-21T18:43:37ZengThe Company of BiologistsBiology Open2046-63902012-02-011323223610.1242/bio.20123232012323Comparison of reproductive traits of regular and irradiated male desert locust Schistocerca gregaria (Orthoptera: Acrididae): Evidence of last-male sperm precedenceSeverin Dushimirimana0Thierry Hance1David Damiens2 Biodiversity Research Centre, Earth and Life Institute, Université Catholique de Louvain, 4-5 Place Croix du Sud 1348, Louvain-la-Neuve, Belgium Biodiversity Research Centre, Earth and Life Institute, Université Catholique de Louvain, 4-5 Place Croix du Sud 1348, Louvain-la-Neuve, Belgium Biodiversity Research Centre, Earth and Life Institute, Université Catholique de Louvain, 4-5 Place Croix du Sud 1348, Louvain-la-Neuve, Belgium Summary The sterile insect technique (SIT) is increasingly used to control pest insect populations. The success of SIT control programs depends on the ability to release sterile males and on the capacity of sterile males to compete with wild males to inseminate wild females. In this study, we evaluated the mating performance of Schistocerca gregaria (Försk.) males irradiated with 4 Gray. We compared reproductive traits, such as duration of precopulation time, mating duration, quantity of sperm stored by females after copulation, number of females mated successively and postmating competition of irradiated males with non-irradiated males. Irradiated males were able to mate but the resulting number of offspring was dramatically reduced compared to the average number of offspring observed during a regular mating. During a single copulation, irradiated males transferred fewer sperm than regular males but, theoretically, this quantity is enough to fertilize all the eggs produced by a female during its reproductive life. Irradiated males also had the ability to remove sperm from a previous mating with unirraditated males. This new information on the mating strategies helps explain the post-copulation guarding behaviour of S. gregaria.http://bio.biologists.org/content/1/3/232Last-male sperm precedenceIrradiationSperm managementSchistocerca gregaria |
| spellingShingle | Severin Dushimirimana Thierry Hance David Damiens Comparison of reproductive traits of regular and irradiated male desert locust Schistocerca gregaria (Orthoptera: Acrididae): Evidence of last-male sperm precedence Biology Open Last-male sperm precedence Irradiation Sperm management Schistocerca gregaria |
| title | Comparison of reproductive traits of regular and irradiated male desert locust Schistocerca gregaria (Orthoptera: Acrididae): Evidence of last-male sperm precedence |
| title_full | Comparison of reproductive traits of regular and irradiated male desert locust Schistocerca gregaria (Orthoptera: Acrididae): Evidence of last-male sperm precedence |
| title_fullStr | Comparison of reproductive traits of regular and irradiated male desert locust Schistocerca gregaria (Orthoptera: Acrididae): Evidence of last-male sperm precedence |
| title_full_unstemmed | Comparison of reproductive traits of regular and irradiated male desert locust Schistocerca gregaria (Orthoptera: Acrididae): Evidence of last-male sperm precedence |
| title_short | Comparison of reproductive traits of regular and irradiated male desert locust Schistocerca gregaria (Orthoptera: Acrididae): Evidence of last-male sperm precedence |
| title_sort | comparison of reproductive traits of regular and irradiated male desert locust schistocerca gregaria orthoptera acrididae evidence of last male sperm precedence |
| topic | Last-male sperm precedence Irradiation Sperm management Schistocerca gregaria |
| url | http://bio.biologists.org/content/1/3/232 |
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