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Sathyan R, Engelbrecht A, Couldridge VC. Phylogeographic investigation of the bladder grasshopper Bullacris unicolor (Orthoptera Pneumoroidea) in South Africa. ETHOL ECOL EVOL 2023. [DOI: 10.1080/03949370.2022.2157892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Rekha Sathyan
- Department of Biodiversity and Conservation Biology, University of the Western Cape, Bellville, South Africa
| | - Adriaan Engelbrecht
- Department of Biodiversity and Conservation Biology, University of the Western Cape, Bellville, South Africa
| | - Vanessa C.K. Couldridge
- Department of Biodiversity and Conservation Biology, University of the Western Cape, Bellville, South Africa
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Martinez-Sañudo I, Perin C, Cavaletto G, Ortis G, Fontana P, Mazzon L. Studying genetic population structure to shed light on the demographic explosion of the rare species Barbitistes vicetinus (Orthoptera, Tettigoniidae). PLoS One 2021; 16:e0250507. [PMID: 33956844 PMCID: PMC8101909 DOI: 10.1371/journal.pone.0250507] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Accepted: 04/07/2021] [Indexed: 11/19/2022] Open
Abstract
Insect outbreaks usually involve important ecological and economic consequences for agriculture and forestry. The short-winged bush-cricket Barbitistes vicetinus Galvagni & Fontana, 1993 is a recently described species that was considered rare until ten years ago, when unexpected population outbreaks causing severe defoliations across forests and crops were observed in north-eastern Italy. A genetic approach was used to analyse the origin of outbreak populations. The analysis of two mitochondrial regions (Cytochrome Oxidase I and II and 12S rRNA-Control Region) of 130 samples from the two disjunct ranges (Euganean and Berici Hills) showed high values of haplotype diversity and revealed a high geographical structure among populations of the two ranges. The high genetic variability observed supports the native origin of this species. In addition, results suggest that unexpected outbreaks are not a consequence of a single or few pestiferous haplotypes but rather the source of outbreaks are local populations which have experienced an increase in each area. The recent outbreaks have probably appeared independently of the genetic haplotypes whereas environmental conditions could have affected the outbreak populations. These findings contribute to a growing understanding of the status and evolutionary history of the pest that would be useful for developing and implementing biological control strategies for example by maximizing efforts to locate native natural enemies.
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Affiliation(s)
- Isabel Martinez-Sañudo
- Department of Agronomy, Food, Natural resources, Animals and Environment (DAFNAE), University of Padua, Legnaro, PD, Italy
| | - Corrado Perin
- Department of Agronomy, Food, Natural resources, Animals and Environment (DAFNAE), University of Padua, Legnaro, PD, Italy
| | - Giacomo Cavaletto
- Department of Agronomy, Food, Natural resources, Animals and Environment (DAFNAE), University of Padua, Legnaro, PD, Italy
| | - Giacomo Ortis
- Department of Agronomy, Food, Natural resources, Animals and Environment (DAFNAE), University of Padua, Legnaro, PD, Italy
| | - Paolo Fontana
- Istituto Agrario San Michele all’Adige (IASMA) Research and Innovation Centre, Foundation Edmund Mach (FEM), San Michele all’ Adige, Trento, TN, Italy
| | - Luca Mazzon
- Department of Agronomy, Food, Natural resources, Animals and Environment (DAFNAE), University of Padua, Legnaro, PD, Italy
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