Plant organ abscission and the green island effect caused by a coleopteran’s gall on Miconia cf cinnamomifolia (Melastomataceae): larval survival and mortality factors

Authors

  • Jean Carlos Santos Universidade Federal de Uberlândia
  • Rodrigo de Queiroga Miranda
  • Jarcilene Silva de Almeida-Cortez

DOI:

https://doi.org/10.24221/jeap.2.1.2017.967.1-6

Keywords:

Atlantic forest, beetle, coleoptera, gall-inducing insects, insect gall, insect-plant interactions, natural enemies

Abstract

Galls are characterized by inducing cellular differentiation (hyperplasia or hypertrophy) resultant of the action of some organisms, mainly insects, on structures/organs of their host plants. The galls cause physiological changes in host plants, altering host traits, and their growth and survival. The early abscission of galled plant organs can be a form of plant defense. Therefore, the galls decayed more slowly than the healthy leaves, or the surrounding healthy leaf tissue in some abscised galled leaves, forming “green island galls”. This study reported an instance where the host plant Miconia cinnamomifolia (Melastomataceae) abscises leaves galled by an unidentified coleopteran’s gall on the soil of a fragment of Atlantic Forests, Brazil. Once on the forest soil galls were exposed to a new set of potential natural enemies, as pathogens and predators. Consequently, larval survival decrease of 79% to 36% in four months and fungal infestation increase of 2% to 21%. Neither size nor weight of the galls differed between categories of mortality factors and larval survival. It was discussed the adaptive nature of the “Green Island Effect” as a counter-response of gallers to leaf abscission, which is a known plant defense strategy.

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Author Biography

Jean Carlos Santos, Universidade Federal de Uberlândia

Graduação em Ciências Biológicas - Bacharelado pela Universidade Federal de Uberlândia (2000), graduação em Ciências Biológicas - Licenciatura Plena pela Universidade Federal de Uberlândia (2000), mestrado em Ecologia e Conservação de Recursos Naturais pela Universidade Federal de Uberlândia (2002) e doutorado em Ecologia (Conservação e Manejo da Vida Silvestre) pela Universidade Federal de Minas Gerais (2006). Atualmente é professor adjunto III da Universidade Federal de Uberlândia. Tem experiência na área de Ecologia, com ênfase em Biodiversidade e Ecologia Evolutiva, atuando principalmente nos seguintes temas: interações entre insetos e plantas, resistência de plantas contra herbívoros, herbivoria, galhas e seus indutores, ecologia e comportamento de insetos, plantas invasoras e seus herbívoros. Maiores informações, acesse o site laboratório: http://jcsantosbio.wix.com/leebio

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Published

2017-01-31

How to Cite

Santos, J. C., Miranda, R. de Q., & Almeida-Cortez, J. S. de. (2017). Plant organ abscission and the green island effect caused by a coleopteran’s gall on Miconia cf cinnamomifolia (Melastomataceae): larval survival and mortality factors. Journal of Environmental Analysis and Progress, 2(1), 1–6. https://doi.org/10.24221/jeap.2.1.2017.967.1-6