Distribution of gall-inducing arthropods in areas of deciduous seasonal forest of Parque da Sapucaia (Montes Claros, MG, Brazil): effects of anthropization, vegetation structure and seasonality

Kelly Christie dos Santos Costa,Walter Santos de Araújo

doi:10.11606/1807-0205/2019.59.31

Kelly Christie dos Santos Costa, Walter Santos de Araújo

Open Access

https://doi.org/10.11606/1807-0205/2019.59.31

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Abstract

In the present study, we inventoried gall-inducing arthropod species and evaluated the effects of habitat anthropization, vegetation structure and seasonality on this group in areas of deciduous seasonal forest of Parque da Sapucaia, Montes Claros, MG, Brazil. The gall-inducing fauna was sampled between April 2017 and February 2018 from 20 plots distributed in anthropized and preserved habitats. A total of 29 morphospecies of gall-inducing arthropods and 21 species of host plants were recorded. The Fabaceae plant family had the highest number of gall morphospecies (n = 10), while the Cecidomyiidae (Diptera) insect family induced the most galls (41.3%). Mean gall richness did not differ between preserved and anthropized plots, but was negatively affected by mean vegetation height and density. The total number of gall morphospecies recorded during each sampling did not differ between dry and rainy seasons, but the mean richness of galls per plot was higher in the rainy season. In conclusion, natural factors, such as vegetation structure and seasonality, were more important for the distribution of gall-inducing species than anthropic factors, such as vegetation anthropization level.

Highlights

Galls are vegetative structures formed as the result of cellular modifications to plant tissues induced by different organisms, such as gall-inducing insects and mites (Shorthouse & Rohfritsch, 1992)
The objective of the present study was to inventory the diversity of arthropod galls in different areas of deciduous seasonal forest in Parque da Sapucaia, Montes Claros, Minas Gerais, Brazil
A total of 29 morphotypes of gall-inducing arthropods were found distributed among 21 species of host plants belonging to 13 botanical families (Table 1; Figs. 2‐3)

Summary

Introduction

Galls are vegetative structures formed as the result of cellular modifications to plant tissues induced by different organisms, such as gall-inducing insects and mites (Shorthouse & Rohfritsch, 1992). Gall-inducing arthropods are abundant in warm, dry habitats, and especially on sclerophyllous plants in tropical and temperate regions (Price et al, 1998). In addition to their enormous diversity, there is evidence that these arthropods’ galls can be used as indicators of habitat quality (Fernandes et al, 1995; Toma et al, 2014), since their occurrence responds to environmental and anthropic modifications (Araújo et al, 2011a; Araújo & Espírito-Santo Filho, 2012; Brito et al, 2018).

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