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首页> 外文期刊>Entomologia Sinica >REPRODUCTIVE BEHAVIOUR OF TWO APHIDOPHAGOUS LADYBEETLES, CHEILOMENES SEXMACULATA AND COCCINELLA TRANSVERSALIS
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REPRODUCTIVE BEHAVIOUR OF TWO APHIDOPHAGOUS LADYBEETLES, CHEILOMENES SEXMACULATA AND COCCINELLA TRANSVERSALIS

机译：REPRODUCTIVE BEHAVIOUR OF TWO APHIDOPHAGOUS LADYBEETLES, CHEILOMENES SEXMACULATA AND COCCINELLA TRANSVERSALIS

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Reproductive behaviour of two aphidophagous ladybeetles, Cheilomenes sexmaculata and Coccinella transversalis was studied. A premating period of 5.0 ± 0.5 and 11.7 ± 0.4 days and a pre-oviposition period of 5.5 ± 0.7 and 12.7 ± 0.5 days was observed for C. sexmaculata and C. transversalis, respectively. Males of both the species exhibited courtship in five steps, viz. approach, watch, examine, mount and attempt. Sexually immature, recently mated and ovipositing females rejected male advances in both the species. Chemical, visual and behavioural cues probably play a role in mate recognition. Quiescent mating occurred in C. sexmaculata, whereas abdominal shakings in the form of bouts and strokes were characteristic in C. transversalis. C. sexmaculata had a relatively prolonged mating duration (133.4 ± 8.9 min) than C. transversalis (37.9 ± 2.0 min), possibly due to the absence of active processes, i.e., bouts and strokes. The active processes in C. transversalis decreased with multiple matingsin a day. Un-mated adults of both the species mated more vigorously than the mated ones. Reproductive performance of both the species was best after multiple matings.

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