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                                       Details for article 6 of 10 found articles
 
 
  Ovipositional Rhythmicity in Ladybirds (Coleoptera: Coccinellidae): A Laboratory Study
 
 
Title: Ovipositional Rhythmicity in Ladybirds (Coleoptera: Coccinellidae): A Laboratory Study
Author: Mishra, Geetanjali
Srivastava, Shefali
Gupta, Avanish K.
Appeared in: Biological rhythm research
Paging: Volume 35 (2004) nr. 4-5 pages 277-287
Year: 2004-10
Contents: Complete and diel ovipositional rhythms have been observed in three aphidophagous ladybirds (Coleoptera: Coccinellidae): Coccinella septempunctata Linnaeus, Coccinella transversalis Fabricius and Propylea dissecta (Mulsant) for the first time. The complete ovipositional rhythm could be described in terms of a polynomial curve and daily fluctuations in all three species. In the diel cycle, all three ladybird species oviposited significantly in the scotophase. C. septempunctata females preferred to oviposit at the end of scotophase in the early morning hours (0300-0700), P. dissecta laid most eggs in the middle of scotophase during the night (2100-2300), and C. transversalis laid most at the beginning of the scotophase at dusk (1700-1900). While the diel ovipositional rhythm of C. septempunctata and P. dissecta did not differ between days, that of C. transversalis changed dramatically; there was a single peak on the first and second day of observation, and four oviposition peaks on the fifth day with the peaks being situated in the two hours preceding and succeeding the onset and end of the scotophase. Diel rhythms of C. septempunctata and P. dissecta appear to be endogenous in nature while that of C. transversalis is partly modified by exogenous factors.
Publisher: Taylor & Francis
Source file: Elektronische Wetenschappelijke Tijdschriften
 
 

                             Details for article 6 of 10 found articles
 
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