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Effect of larval density on development and induction of reproductive diapause in Bruchidius atrolineatus



Effect of larval density on development and induction of reproductive diapause in Bruchidius atrolineatus



Entomologia Experimentalis et Applicata, 613: 255-263



In Bruchidius atrolineatus (Pic), an increase in larval density inside the seed led to a reduction in the survival rate during post-embryonic development, with only a limited decrease in the weight of adults. A high larval density increased the proportion of adults in reproductive diapause under certain thermoperiodic conditions. Under other conditions that already promote the emergence of a high proportion of diapausing beetles, an increase in larval density had no effect on diapause. There was no correlation between the larval developmental time and the weights of adults in a strain with a very low incidence of diapause. However, such a correlation was observed when both sexually-active and diapausing beetles emerged. This correlation was explained by the longer developmental times and lower weights of diapausing beetles.

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Accession: 002083812

Download citation: RISBibTeXText

DOI: 10.1111/j.1570-7458.1991.tb01558.x



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