New records of polymorphism in Asian libellulid dragonflies (Insecta: Odonata)

Joshi, Shantanu; Poorten, Nancy van der; Sumanapala, Amila P.; Nielsen, Erland Hejn; Patel, Jenis R.; Nielsen, Bo; Sawant, Dattaprasad; Sherif, Muhamed

doi:10.1080/13887890.2020.1788999

Cited by 4 publications

(2 citation statements)

References 23 publications

(24 reference statements)

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“…The high numbers of haplotypes are due to a high degree of cox1 and 16S gene polymorphisms in R. fenestrella samples in Peninsular Malaysia. In fact, the polymorphism that occurred in Odonata were widely reported in other studies [48,49]. Whereas this study showed extremely low haplotype numbers when compared to study done by Jiang et al (2023) [50] on the population of damselfly Ischnura senegalensis (Rambur, 1842) that revealed of 51 haplotype variations.…”

Section: Haplotype Variation and Distribution Of Rhinocypha Fenestrellasupporting

confidence: 46%

Genetic diversity and phylogeographic patterns of the peacock jewel-damselfly, Rhinocypha fenestrella (Rambur, 1842)

Noorhidayah,

Azrizal-Wahid,

Low

et al. 2024

PLoS ONE

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Despite is known to have widespread distribution and the most active species of the family Chlorocyphidae, the molecular data of Rhinocypha fenestrella (Rambur, 1842) are relatively scarce. The present study is the first that examined the genetic diversity and phylogeographic pattern of the peacock jewel-damselfly R. fenestrella by sequencing the cytochrome C oxidase I (cox1) and 16S rRNA gene regions from 147 individuals representing eight populations in Malaysia. A total of 26 and 10 unique haplotypes were revealed by the cox1 and 16S rRNA genes, respectively, and 32 haplotypes were recovered by the concatenated sequences of cox1+16S. Analyses indicated that haplotype AB2 was the most frequent and the most widespread haplotype in Malaysia while haplotype AB1 was suggested as the common ancestor haplotype of the R. fenestrella that may arose from the Negeri Sembilan as discovered from cox1+16S haplotype network analysis. Overall haplotype and nucleotide diversities of the concatenated sequences were Hd = 0.8937 and Pi = 0.0028, respectively, with great genetic differentiation (FST = 0.6387) and low gene flow (Nm = 0.14). Population from Pahang presented the highest genetic diversity (Hd = 0.8889, Pi = 0.0022, Nh = 9), whereas Kedah population demonstrated the lowest diversity (Hd = 0.2842, Pi = 0.0003, Nh = 4). The concatenated sequences of cox1+16S showed genetic divergence ranging from 0.09% to 0.97%, whereas the genetic divergence for cox1 and 16S rRNA genes were 0.16% to 1.63% and 0.01% to 0.75% respectively. This study provides for the first-time insights on the intraspecific genetic diversity, phylogeographic pattern and ancestral haplotype of Rhinocypha fenestrella. The understanding of molecular data especially phylogeographic pattern can enhance the knowledge about insect origin, their diversity, and capability to disperse in particular environments.

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Section: Haplotype Variation and Distribution Of Rhinocypha Fenestrellasupporting

confidence: 46%

Genetic diversity and phylogeographic patterns of the peacock jewel-damselfly, Rhinocypha fenestrella (Rambur, 1842)

Noorhidayah,

Azrizal-Wahid,

Low

et al. 2024

PLoS ONE

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“…Gutassociated fungi of dragonfly were highly diverse and discovered as the resource of bioactive compounds (Shao et al, 2015;Lu et al, 2017;Zhang et al, 2020). Crocothemis servilia is one of Asia's most widely distributed dragonfly species, mature males and most females are scarlet-red and yellow, respectively (Joshi et al, 2020). However, no study reported the gut fungal diversity of the dragonfly.…”

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confidence: 99%

Diversity, antibacterial activity and chemical analyses of gut-associated fungi isolated from the Crocothemis servilia

et al. 2022

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Insect-associated fungi are a potentially rich source of novel natural products with antibacterial activity. Here, we investigated the community composition and phylogenetic diversity of gut-associated fungi of the dragonfly (Crocothemis Servilia) using a combination of culture-dependent and culture-independent methods. A total of 42 fungal isolates were obtained from the guts of the dragonfly, which belonged to four classes and thirteen different genera. Amplicon sequencing analyses revealed that the fungal communities were more diverse, and a total of 136 genera were identified and dominated by the genera Wojnowiciella and Phoma. The antibacterial bioassay showed that five fungal crude extracts of representative isolates have shown antibacterial activities. Among them, the extract of Phoma sp. QTH17 showed the best antibacterial activities against Escherichia coli, Micrococcus tetragenus, and Staphylococcus aureus with the disc diameter of inhibition zone diameter (IZD) of 6.50, 10.80, and 8.70 mm, respectively. Chemical analysis of Phoma sp. QTH17 led to the discovery of five known compounds, including ergosterol (1), 3-Chlorogentisyl alcohol (2), epoxydon (3), epoxydon 6-methylsalicylate ester (4) and mannitol (5). Among them, the compound 3 exhibited potent antibacterial activities against E. coli, M. tetragenus, and S. aureus with the IZD of 7.00, 14.00, and 12.50 mm, respectively, which were slightly weaker than those of the positive gentamicin sulfate with the IZD of 11.13, 18.30, and 12.13 mm, respectively. In conclusion, our results confirmed that the diversity of gut-associated fungi of C. Servilia could be expected to explore the resource of new species and antibacterial substances.

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Polymorphisms in Insect Predators

Sahayaraj,

Hassan

2023

Worldwide Predatory Insects in Agroecosystems

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New records of polymorphism in Asian libellulid dragonflies (Insecta: Odonata)

Cited by 4 publications

References 23 publications

Genetic diversity and phylogeographic patterns of the peacock jewel-damselfly, Rhinocypha fenestrella (Rambur, 1842)

Genetic diversity and phylogeographic patterns of the peacock jewel-damselfly, Rhinocypha fenestrella (Rambur, 1842)

Diversity, antibacterial activity and chemical analyses of gut-associated fungi isolated from the Crocothemis servilia

Polymorphisms in Insect Predators

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