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RESEARCH ARTICLE

Insights into Super-host Plant Species of Galling Insects in the Neotropical Region



Julio M. Grandez-Rios1, Carlos G. H. Pizango2, Walter S. de Araújo3, *
1 Instituto de Investigaciones de la Amazonia Peruana (IIAP), Av. José A. Quiñones, Iquitos, Peru
2 School of Geography, University of Leeds, Leeds LS2 9JT, UK
3 Department of General Biology, Center of Biological Sciences and Health, Universidade Estadual de Montes Claros, 39401-089, Montes Claros, Brazil

Abstract

Background:

The term ‘super host’ plant is often used in the literature surrounding plant-galling interactions, but the different contexts in which the term is used generates doubt and confusion due to the absence of a systematic definition of the term’s meaning.

Objective:

In this study, we used 60 well-defined plant-galling assemblages to propose a systematic definition of super-host plants at the local and regional level. In addition, we investigated factors that explain the number of galling species per host plant at different geographic scales.

Methods:

Plant-galling assemblages were compiled from an extensive literature review on insect gall inventories carried out in Brazil.

Results:

We found 888 host plant species belonging to 94 families and 340 genera hosting 2,376 insect gall morphotypes. At a local scale, 33.2% of host plant species harbored one insect gall morphotype and 12.2% hosted two gall morphotypes, making up 45.4% of the host plant species in each locality. At the regional scale, 51.5% of host plant species harbored one insect gall morphotype, and 17.9% of host plant species hosted two gall morphotypes, corresponding to 69.4% of all host plant species. Based on the average number of galling species per plant species, we classified the plant species into: 1) Host species; 2) Multi-host species and 3) Super-host species. The super-host plant species that showed the greatest richness of gall morphotypes at the local level were Baccharis reticularia and Adenocalymma neoflavidu. Furthermore, we found a positive relationship between plant life-form architectural complexity and the number of galling species at the local level. At the regional scale, we registered five super-host species (Guapira opposita, Protium heptaphyllum, Copaifera langsdorffii, Myrcia splendens, and Byrsonima sericea) which hosted 21 or more insect gall morphotypes. The number of galling species per host plant species at the regional scale was influenced positively by geographic distribution rank and number of biomes in which each species of the plant occurs.

Conclusion:

The present study stands out as the first of its kind to provide a systematic standardization for the super-host plants and to investigate factors influencing these species.

Keywords: Ecological interactions, Galling arthropods, Herbivory, Insect galls, Plant-animal interactions, Neotropical region.


Article Information


Identifiers and Pagination:

Year: 2020
Volume: 8
First Page: 66
Last Page: 73
Publisher Id: TOBIOJ-8-66
DOI: 10.2174/1874196702008010066

Article History:

Received Date: 16/3/2020
Revision Received Date: 29/8/2020
Acceptance Date: 24/9/2020
Electronic publication date: 20/11/2020
Collection year: 2020

© 2020 Grandez-Rios et al.

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


* Address correspondence to this author at the Department of General Biology, Center of Biological Sciences and Health, Universidade Estadual de Montes Claros, 39401-089, Montes Claros, Brazil; E-mail: walterbioaraujo@gmail.com



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