Author:
ABOU-FAKHR HAMMAD E. M.,NEMER N. M.
Abstract
Liriomyza huidobrensis, the pea leafminer, is a recently identified pest on vegetables in Lebanon. The
objectives of this study were to survey the leafminer infestation, to study its dispersion and its
development on cucumber, swisschard and bean. In general, the infestation level was found to be
higher in the middle coastal sites than in the other sites during the period of the study 1994–95. In
the former sites, the pest was found to thrive on swisschard in October and November, in presence
of cucumber under greenhouses, while it was encountered in significantly higher numbers on
cucumber during the spring season, in absence of swisschard. Pairwise comparisons of Taylor's and
Iwao's regression slope for L. huidobrensis larval mines indicated a contagious dispersion on leaves
of cucumber and bean, while the pattern was random to slightly aggregated on swisschard. There was
a significantly higher number of larval mines on the lower plant stratum compared to the middle and
upper strata of cucumber through the cropping season. There was a significant difference in the
overall development duration (19·6–22·3 days) of the insect among the three hosts. The larval
development duration was significantly shorter on bean compared to swisschard and cucumber
consecutively. However, there was no significant difference in egg or pupa duration among the three
hosts. Results of this study provide bases for appropriate management of the pest, taking into
consideration its infestation level, spatial pattern, and development duration on the mentioned hosts.
Publisher
Cambridge University Press (CUP)
Subject
Genetics,Agronomy and Crop Science,Animal Science and Zoology
Cited by
12 articles.
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