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Efeitos do sexo, do vigor e do tamanho da planta hospedeira sobre a distribuição de insetos indutores de galhas em Baccharis pseudomyriocephala Teodoro (Asteraceae) Rev. Bras. entomol.
Araújo,Ana Paula A.; Carneiro,Marco Antonio A.; Fernandes,G. Wilson.
Several hypotheses have been proposed to explain the patterns of host plant utilization by herbivorous insects in natural communities. We tested four hypotheses aiming to understand the pattern of attack by gall-inducing insects on the dioecious shrub, Baccharis pseudomyriocephala (Asteraceae). The shrub occurs in the Parque Estadual do Itacolomi, Southeastern Brazil, and supports ten species of galling insects. The following hypotheses were tested: i) male plants are more attacked by galling insects than female plants; ii) larger plant modules are preferentially attacked by galling insects; iii) galling insects perform better on larger modules than on smaller modules; iv) galling insects increase in abundance with meristematic availability. To address...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Dioecy; Galling insects; Insect herbivore; Plant architecture; Plant vigour hypothesis.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262003000400001
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Effect of temperature and substrate moisture on group survival of Constrictotermes sp. (Isoptera: Termitidae) under laboratory conditions Rev. Bras. entomol.
Ferreira,Dinamarta V.; Cruz,Joseane S.; Sacramento,Jailton J.M.; Rocha,Marcos Leandro C.; Cristaldo,Paulo F.; Araújo,Ana Paula A..
ABSTRACT Laboratory bioassays should be performed under appropriate conditions that minimize stress and promote greater longevity to tested animals. For social insects, for instance, the stress triggered by removal individuals from nests may result in changes in their survival and behavior. Here we analyzed the effects of variations of different combinations of temperature and substrate moisture (mL of water/g of nest substrate) on group survival of Constrictotermes sp. (Termitidae: Nasutitermitinae). In general, lower substrate moisture resulted in faster mortality. On the other hand, groups survival longer at a temperature of 26 ºC and under higher substrate moisture (2–3 mL/7 g of nest substrate). The result of this study may contribute to the...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Bioassays; Mortality; Termite.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262019000100009
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