| Pak. J. Bot., 36(1): 127-131, 2004. | Back to Contents | ||||
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Updated: 09-07-09 | ||||
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INSECT HERBIVORY IN POLLUTED MANGROVES OF THE INDUS DELTA S.M. SAIFULLAH AND MAHERA S. ALI
Abstract:
The study deals with estimation of insect herbivory on the attached
leaves of the grey mangrove Avicennia marina (Forsk.) Vierh., in
a highly polluted habitat of the Indus Delta. A greater proportion of
the leaves was affected by herbivory in varying degrees of consumption
by insects and mostly less than 20% of the leaf area was consumed. A
vertical zonation of herbivory was observed with an increasing trend
from upper to lower canopy. The overall estimate of herbivory in
mangroves revealed that insects consumed as much as 22% of the foliage
with an average value of 14.38 ± 4.37%.
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