2010 Fiscal Year Final Research Report
Male reproductive strategies of the sorghum plant bug : how do males enhance their own fitness?
Project/Area Number |
21880052
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Research Category |
Grant-in-Aid for Research Activity Start-up
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Allocation Type | Single-year Grants |
Research Field |
Applied entomology
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Research Institution | National Agricultural Research Organization |
Principal Investigator |
OKU Keiko 独立行政法人農業・食品産業技術総合研究機構, 中央農業総合研究センター・斑点米カメムシ研究チーム, 任期付研究員 (80508143)
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Project Period (FY) |
2009 – 2010
|
Keywords | アカスジカスミカメ / 精包 / 交尾間隔 / 再交尾 / 産卵数 / 孵化率 / 性フェロモン |
Research Abstract |
Males of the sorghum plant bug transfer a spermatophore to females during copulation. But, when the mating interval is quite short, males transfer no spermatophore to females at the second copulation. The copula duration of mated males that did not transfer spermatophores to females was longer than that of males that transferred a spermatophore, suggesting that males engage in post-copulatory mate guarding. On the other hand, almost all mated females with a spermatophore did not remate, and their fecundity was greater than mated females without a spermatophore. Males have the same substances with female sex pheromone components. Male component levels did not change both when males were alone and when males lived with conspecific males. By contrast, male component levels decreased when males lived with females. These results suggest that male components are related with mating.
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Research Products
(6 results)