Insect Symbiosis

A special issue of Diversity (ISSN 1424-2818). This special issue belongs to the section "Animal Diversity".

Deadline for manuscript submissions: closed (31 July 2019) | Viewed by 4219

Special Issue Editor


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Guest Editor
Department of Sustainable Crop Production, Università Cattolica del Sacro Cuore, Milan, Italy
Interests: honey bee; ecosystem services; crop pests; contaminants
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Special Issue Information

Dear Colleagues,

The term symbiosis, which comes from the ancient Greek words “σύν” (with) and “βίος” (life), refers to close and long-term biological interactions between different living entities. Ground-breaking researches on the universality and diversity of symbiont associations are now challenging the life sciences. In particular, the conventional notion of individuality, from the anatomical, developmental, physiological, and evolutionary points of view, is now questioned: Each living entity should no longer be considered as an autonomous entity but rather as a “holobiont” (i.e., the host and its full symbiont population) with a “hologenome” (i.e., the combination of the host genome and the genomes of all its symbiotic organisms).

Insects display a wide range of heritable symbionts that may be obligate or facultative for the host, have an intracellular or extracellular lifestyle, are vertically and/or horizontally transmitted. Most of them (e.g., reproductive manipulators, microbes in the gut and in the bacteriome, etc.) are known to play an essential role in the host ecology, physiology, behavior, and evolution.

In this Diversity Special Issue entitled “Insect Symbiosis”, we encourage researchers to expand the knowledge on insects as micro-ecosystems by submitting works addressing the complex interactions among living organisms (the insect host and its symbionts) and between organisms and the environment in which they live, i.e., the insect as an ecological niche.

Dr. Ilaria Negri
Guest Editor

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Keywords

  • Insects
  • Symbiont
  • Microbiome
  • Reproductive manipulators
  • Holobiome
  • Hologenome

Published Papers (1 paper)

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Research

26 pages, 6494 KiB  
Article
Aquatic Hemiptera in Southwest Cameroon: Biodiversity of Potential Reservoirs of Mycobacterium ulcerans and Multiple Wolbachia Sequence Types Revealed by Metagenomics
by Seraphine N. Esemu, Xiaofeng Dong, Achah J. Kfusi, Catherine S. Hartley, Roland N. Ndip, Lucy M. Ndip, Alistair C. Darby, Rory J. Post and Benjamin L. Makepeace
Diversity 2019, 11(12), 225; https://doi.org/10.3390/d11120225 - 25 Nov 2019
Cited by 4 | Viewed by 3731
Abstract
Buruli ulcer (BU), caused by Mycobacterium ulcerans, is a neglected tropical disease associated with freshwater habitats. A variety of limnic organisms harbor this pathogen, including aquatic bugs (Hemiptera: Heteroptera), which have been hypothesized to be epidemiologically important reservoirs. Aquatic Hemiptera exhibit high [...] Read more.
Buruli ulcer (BU), caused by Mycobacterium ulcerans, is a neglected tropical disease associated with freshwater habitats. A variety of limnic organisms harbor this pathogen, including aquatic bugs (Hemiptera: Heteroptera), which have been hypothesized to be epidemiologically important reservoirs. Aquatic Hemiptera exhibit high levels of diversity in the tropics, but species identification remains challenging. In this study, we collected aquatic bugs from emerging foci of BU in the Southwest Region of Cameroon, which were identified using morphological and molecular methods. The bugs were screened for mycobacterial DNA and a selection of 20 mycobacteria-positive specimens from the families Gerridae and Veliidae were subjected to next-generation sequencing. Only one individual revealed putative M. ulcerans DNA, but all specimens contained sequences from the widespread alpha-proteobacterial symbiont, Wolbachia. Phylogenetic analysis placed the Wolbachia sequences into supergroups A, B, and F. Circularized mitogenomes were obtained for seven gerrids and two veliids, the first from these families for the African continent. This study suggests that aquatic Hemiptera may have a minor role (if any) in the spread of BU in Southwest Cameroon. Our metagenomic analysis provides new insights into the incursion of Wolbachia into aquatic environments and generated valuable resources to aid molecular taxonomic studies of aquatic Hemiptera. Full article
(This article belongs to the Special Issue Insect Symbiosis)
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