| Autor: |
de Deus, Ezequiel, Passos, Joseane, van Sauers-Muller, Alies, Jesus, Cristiane, Silva, Janisete Gomes, Adaime, Ricardo |
| Předmět: |
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| Zdroj: |
Insects (2075-4450); Dec2024, Vol. 15 Issue 12, p949, 14p |
| Abstrakt: |
Simple Summary: This study assessed the genetic diversity of carambola fruit fly populations in Brazil and Suriname, comparing them with Asian populations. The results suggest that Indonesia is the likely source of this species' introduction into South America, and the low genetic diversity supports the hypothesis of a recent introduction of a single lineage. Additionally, our findings may be useful for invasion risk assessment and for establishing priorities in the control and management of this important pest species. The carambola fruit fly, Bactrocera carambolae Drew & Hancock, is native to Southeast Asia, infests about 150 plant species, and is considered a quarantine pest insect in several regions of the world. Bactrocera carambolae has invaded Suriname, French Guyana, and northern Brazil. In Brazil, it was first recorded in 1996 and has been restricted to the states of Amapá and Roraima due to official control efforts of the Ministry of Agriculture and Food Supply (Ministério da Agricultura e Pecuária—MAPA). This is the first study to estimate the genetic structure and diversity of South American populations of B. carambolae. A total of 116 individuals from 11 localities in Brazil and 7 localities in Suriname were analyzed. Additional sequences available at GenBank from Indonesia (Lampung) and Thailand (San Pa Tong and Muang District) were also used in the analysis. We sequenced a fragment of the mitochondrial gene cytochrome oxidase subunit I. A total of 35 haplotypes were found. Haplotypes from Indonesia were closest to the haplotypes from South America, separated only by a few mutational steps. This suggests that Indonesia is the likely source for the introduction of B. carambolae into South America. The Southeast Asian populations appeared as the most ancestral group in the phylogenetic trees. The high similarity and sharing of several haplotypes among populations within South America indicate a lack of genetic structure. The mismatch distribution and neutrality tests suggest that South American populations have undergone a rapid growth and expansion following a single founder event. The low genetic diversity and the population expansion evidenced by the neutrality tests lend support to the hypothesis of a recent introduction of a single lineage of the carambola fruit fly into South America. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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