Food, shelter or competitors? Overlapping of life stages and host plant selection in a Neotropical stink bug species

Autor: R. R. Moura, P. V. A. Ribeiro, B. G. Pereira, A. Quero, R. L. Carvalho, D. C. Oliveira
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Zdroj: Journal of Plant Interactions, Vol 12, Iss 1, Pp 560-566 (2017)
Druh dokumentu: article
ISSN: 1742-9145
1742-9153
17429145
DOI: 10.1080/17429145.2017.1401678
Popis: Phytophagous insects may choose host plants based on conditions that enhance offspring performance. However, some insect species may also select plants based on attributes that enhance their own performance regardless of the consequences for offspring survival. An approach evaluating both hypotheses could provide a more comprehensive understanding of the host plant selection by phytophagous insects. In this study, we described the life stages of a Neotropical stink bug, Edessa contermina, co-occurring on Byrsonima verbascifolia plants in a conservation area of the Brazilian Savannah. We also empirically evaluated how food supply, shelter availability and competitors’ density on the host plants affected the densities of nymphs, adults and mating pairs. We identified and described five life stages of E. contermina. The amount of plant resources did not explain the nymph, adult and mating pairs’ density. However, adults and mating pairs chose plants with a low density of nymphs, probably because egg laying on the host plants with a high density of competitors may negatively affect offspring performance.
Databáze: Directory of Open Access Journals
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