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Intraspecific variation in bionomic characters of the Mexican bean weevil, Zabrotes subfasciatus
Author(s) -
Credland P. F.,
Dendy J.
Publication year - 1992
Publication title -
entomologia experimentalis et applicata
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.765
H-Index - 83
eISSN - 1570-7458
pISSN - 0013-8703
DOI - 10.1111/j.1570-7458.1992.tb01625.x
Subject(s) - phaseolus , biology , weevil , pest analysis , intraspecific competition , fecundity , cultivar , lima beans , host (biology) , population , botany , agronomy , ecology , demography , sociology
Zabrotes subfasciatus (Boheman) (Coleoptera: Bruchidae) is native to parts of Central and South America but has now been spread to many others areas. It commonly infests the seeds of both Lima beans, Phaseolus lunatus , and common beans, Phaseolus vulgaris. Five geographic populations were found to differ in fecundity, patterns of egg distribution, times of development and adult sizes when they were kept under the same conditions. Each population also differed unpredictably from the others in its response to different cultivars of host seed. These differences have been shown to be of considerable importance in determining the potential pest status of the populations and should also promote caution in making predictions about the responses of different populations to new cultivars of bean for agricultural use.