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The status of Bactrocera invadens Drew, Tsuruta & White (Diptera: tephritidae) inferred from complete mitochondrial genome analysis.

ABSTRACT: In this study, the complete 15,911?bp mitochondrial genome (mitogenome) of Bactrocera invadens was sequenced. To estimate the status of B. invadens, all available mitogenomes of Bactrocera were downloaded from GenBank for phylogenetic analysis. Phylogenetic analyses showed that B. invadens, B. philippinensis, B. papayae, and three B. dorsalis sequences formed a well-supported clade with very short terminal branch lengths, indicting the relatively close evolutionary relationships of these taxa. The results further supported that B. invadens, the same as B. philippinensis and B. papayae, belongs to the same species as B. dorsalis.

SUBMITTER: Zhang LJ

PROVIDER: S-EPMC7800549 | biostudies-literature | 2016 Sep

REPOSITORIES: biostudies-literature

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The status of Bactrocera invadens Drew, Tsuruta & White (Diptera: tephritidae) inferred from complete mitochondrial genome analysis.

Zhang Li-Jie LJ Jiang Li-Hui LH Wei Chun-Yan CY Liu Ruo-Si RS Liu Xing-Liang XL Li Jian-Guang JG Xue Huai-Jun HJ

Mitochondrial DNA. Part B, Resources 20160903 1

In this study, the complete 15,911 bp mitochondrial genome (mitogenome) of Bactrocera invadens was sequenced. To estimate the status of B. invadens, all available mitogenomes of Bactrocera were downloaded from GenBank for phylogenetic analysis. Phylogenetic analyses showed that B. invadens, B. philippinensis, B. papayae, and three B. dorsalis sequences formed a well-supported clade with very short terminal branch lengths, indicting the relatively ...[more]

PMID: 33473596

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Project description:The complete 16,043 bp mitochondrial genome (mitogenome) of Bactrocera minax (Diptera: Tephritidae) has been sequenced. The genome encodes 37 genes usually found in insect mitogenomes. The mitogenome information for B. minax was compared to the homologous sequences of Bactrocera oleae, Bactrocera tryoni, Bactrocera philippinensis, Bactrocera carambolae, Bactrocera papayae, Bactrocera dorsalis, Bactrocera correcta, Bactrocera cucurbitae and Ceratitis capitata. The analysis indicated the structure and organization are typical of, and similar to, the nine closely related species mentioned above, although it contains the lowest genome-wide A+T content (67.3%). Four short intergenic spacers with a high degree of conservation among the nine tephritid species mentioned above and B. minax were observed, which also have clear counterparts in the control regions (CRs). Correlation analysis among these ten tephritid species revealed close positive correlation between the A+T content of zero-fold degenerate sites (P0FD), the ratio of nucleotide substitution frequency at P0FD sites to all degenerate sites (zero-fold degenerate sites, two-fold degenerate sites and four-fold degenerate sites) and amino acid sequence distance (ASD) were found. Further, significant positive correlation was observed between the A+T content of four-fold degenerate sites (P4FD) and the ratio of nucleotide substitution frequency at P4FD sites to all degenerate sites; however, we found significant negative correlation between ASD and the A+T content of P4FD, and the ratio of nucleotide substitution frequency at P4FD sites to all degenerate sites. A higher nucleotide substitution frequency at non-synonymous sites compared to synonymous sites was observed in nad4, the first time that has been observed in an insect mitogenome. A poly(T) stretch at the 5' end of the CR followed by a [TA(A)]n-like stretch was also found. In addition, a highly conserved G+A-rich sequence block was observed in front of the poly(T) stretch among the ten tephritid species and two tandem repeats were present in the CR.

Project description:Mating compatibility among recently colonized (wildish) populations of Bactrocera dorsalis (Hendel) from different geographic origins in Thailand was assessed through inter-regional mating tests. Outdoor octagonal nylon screen field cages containing single potted mango trees (Mangifera indica L.) were used. Sexual compatibility was determined using the index of sexual isolation (ISI), the male relative performance index (MRPI), and the female relative performance index (FRPI). The ISI values indicated that the northern population of Bactrocera dorsalis from Chiang Mai province was sexually compatible with the southern population of Bactrocera dorsalis (previously Bactrocera papayae) from Nakhon Si Thammarat province. The MRPI values showed that the northern males had a slightly higher tendency to mate than southern males, while the FRPI data reflected that females of both origins participated equally in matings. In all combinations there were no differences between homotypic and heterotypic couples in mating latency. Southern males tended to mate first with southern females, followed by northern males mating with northern females, while the latest matings involved heterotypic couples, in particular northern males mating with southern females. Overall, more couples were collected from higher parts of the field cage and the upper tree canopy, while there were no differences between the origins of flies in terms of elevation of couples within the cage. Laboratory assessments of fecundity showed no differences in the average number of eggs resulting from inter-regional crosses. Development of immature stages was also equal in the two hybrid crosses, with no differences found in the number of pupae produced, percentage pupal recovery, and percent adult emergence. The practical implication of this study is that colony of Bactrocera dorsalis derived from any northern or southern region of Thailand can potentially be used in sterile insect technique programs against this pest.

Dataset Information

The status of Bactrocera invadens Drew, Tsuruta & White (Diptera: tephritidae) inferred from complete mitochondrial genome analysis.

Publications

The status of <i>Bactrocera invadens</i> Drew, Tsuruta & White (Diptera: tephritidae) inferred from complete mitochondrial genome analysis.

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