New Zealand Journal of Zoology abstracts
Influence of temperature on adult longevity, oviposition and fertility of
Agasicles hygrophila Selman & Vogt (Coleoptera: Chrysomelidae)
C. A. STEWART
R. B. CHAPMAN
Ecology and Entomology Group
P.O. Box 84
Lincoln University
Canterbury, New Zealand
A. M. BARRINGTON
Hort+Research
Private Bag 92169
Auckland, New Zealand
C. M. A. FRAMPTON*
Centre for Computing and Biometrics
P.O. Box 84
Lincoln University
Canterbury, New Zealand
* Present address: Ministry of Agriculture and Forestry, P. O. Box
2095, Auckland 1015, New Zealand.
Abstract Agasicles hygrophila, a leaf feeding
Chrysomelid beetle, was introduced into New Zealand in 1982 for the biological
control of alligator weed, Alternanthera philoxeroides. Laboratory
studies showed that egg laying rate and viability were optimal at a constant
temperature of 25deg.C. Adult female longevity decreased as the temperature was
increased from to 15deg.C to 30deg.C. The number of eggs laid and hatched
decreased during the last six weeks of adult life for females reared at 20 and
25deg.C.
Keywords Agasicles hygrophila; Alternanthera
philoxeroides; alligator weed; oviposition; egg viability; biological
control
Z98041
Received 5 November 1998; accepted 29 March 1999
PDF file of entire paper: medium quality (504K); (scanned from paper original: notes about this process)
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