Physiologic, Morphologic and Behavioural Changes in Zabrotes subfasciatus (Boheman) (Coleoptera, Bruchidae) Related at Diferents Beans Varieties (Phaseolus vulgaris L.)

by Marteleto, Patrícia Bonifácio

Abstract (Summary)
The phenotypic plasticity defines the organism ability to modify itsphysiology/morphology in response to the environmental conditions without majorgenetic changes (Scheiner). This study was developed in order to verify physiologic,morphologic and behavioral changes in two different Zabrotes subfasciatus (Boheman)(Coleoptera, Bruchidae) populations submitted to different diets of beans varieties(Phaseolus vulgaris L.) (Fabaceae). Female longevity (medium life time), fertility andpreference for oviposition site, as well as size and levels of fluctuanting asymmetry(FA) were registered. There were observed physiologic and morphologic modificationrelated to the diet used. Z. subfasciatus is a generalist specie, consuming andovipositioning in different bean varieties. Its ability to use different resources isimportant to the population survivorship preventing it against extinction. The Hopkinsprinciple that determines the influence of previous female experience in the choice ofoviposition sites was not confirmed. The studied populations had different plasticresponses for the same treatments, indicating genetic, physiology and behavioralvariation on its plastic response. Males and females have different abilities to obstructFA occurrence and this evidentiate the influence of genomic factors determining thischaracter.
This document abstract is also available in Portuguese.
Bibliographical Information:

Advisor:Warwick Estevam Kerr; Cecilia Lomônaco de Paula

School:Universidade Federal de Uberlândia

School Location:Brazil

Source Type:Master's Thesis

Keywords:Zabrotes subfasciatus Phenotypic plasticity Fluctuating asymmetry Morphometry Development homeosta Coleoptero


Date of Publication:05/15/2007

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