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Mating and oviposition behaviour as affected by difference in sex ratio of rice hispa


, : Mating and oviposition behaviour as affected by difference in sex ratio of rice hispa. Crop Research (Hisar) 13(1): 163-167

A laboratory experiment was conducted to observe if the mating behaviour and fecundity of rice hispa, Dicladispa armigera (Oliv.) (Coleoptera:Chrysomelidae) was affected due to change in the ratio of males and females in a population. It was revealed that the life time mating (LTM) period of a female was the highest (181.72 h at a ratio of 3M:1F which was followed by 163.63 h at 5 male to 3 female. The least LTM (82.00 h was observed at 3 male:5 female. The total mating period was the highest (928.30 h) at the ratio of 5 male to 10 female. But the false mating per male was the highest (10.92 h) at the sex ratio of 3 male to 1 female followed by 9.50 h at a sex ratio of 5 male to 3 female. The lowest false mating (93.00 h) was observed at a ratio of 1 male to 2 female. The total fecundity was the highest (950.30) at 5 male and 10 female. However, the life time fecundity per female was the highest (160.75) at a ratio of 3 male to 1 female and the lowest fecundity (78.13) per female was observed at 3 male:5 female.

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Related references

Deka, M.K.; Hazarika, L.K., 1997: Mating and oviposition behaviour as affected by differences in sex ratio of rice hispa. A laboratory experiment was conducted to observe if the mating behaviour and fecundity of the rice pest Dicladispa armigera was affected by a change in the ratio of males and females in a population. It was found that the life time mating (LTM) pe...

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