Locust Bacterial Symbionts: An Update
Open Access
- 24 September 2020
- Vol. 11 (10), 655
- https://doi.org/10.3390/insects11100655
Abstract
As one of the world’s most infamous agricultural pests, locusts have been subjected to many in-depth studies. Their ability at one end of their behavioral spectrum to live as solitary individuals under specific conditions, and at the other end of the spectrum to form swarms of biblical scale, has placed them at the focus of vast research efforts. One important aspect of locust ecology is that of their interactions with the bacteria that reside in and on them. Although this aspect of locust ecology has been little studied relative to the mainstream locust research, these bacteria have been shown both to affect locust immunity and to participate in maintaining swarm integrity through the secretion of attractant volatiles. The interaction between locusts and their bacteria seems, however, to be bi-directional, with the bacteria themselves, as recently shown, being influenced by their host’s swarming tendencies. This seems to be a consequence of the bacterial composition in the locust’s gut, reproductive organs, and integument undergoing change with the change in their host’s behavior. In this review we describe the current state of knowledge of the locust–bacteria interactions (data exists mainly for the desert and the migratory locusts), as well as highlighting some newly-gained understanding; and offer perspectives for future research.Keywords
This publication has 44 references indexed in Scilit:
- Small, Smaller, Smallest: The Origins and Evolution of Ancient Dual Symbioses in a Phloem-Feeding InsectGenome Biology and Evolution, 2013
- Facultative Symbionts in Aphids and the Horizontal Transfer of Ecologically Important TraitsAnnual Review of Entomology, 2010
- Diversity of gut microbiota increases with aging and starvation in the desert locustAntonie van Leeuwenhoek, 2009
- Composition of Acridid gut bacterial communities as revealed by 16S rRNA gene analysisJournal of Invertebrate Pathology, 2008
- Coevolved Crypts and Exocrine Glands Support Mutualistic Bacteria in Fungus-Growing AntsScience, 2006
- Diversity of locust gut bacteria protects against pathogen invasionEcology Letters, 2005
- Chemical Barriers to Gut Infection in the Desert Locust: In Vivo Production of Antimicrobial Phenols Associated with the Bacterium Pantoea agglomeransJournal of Invertebrate Pathology, 1995
- The Desert Locust: an international challengePhilosophical Transactions of the Royal Society of London. B, Biological Sciences, 1990
- The germ-free culture of desert locusts, Schistocerca gregariaJournal of Insect Physiology, 1985
- Abundance and distribution of the gut flora of the desert locust, Schistocerca gregariaJournal of Invertebrate Pathology, 1981