Exploring hidden diversity in Southeast Asia’s Dermogenys spp. (Beloniformes: Zenarchopteridae) through DNA barcoding

Farhana, Samsudin Nurul; Muchlisin, Zainal A.; Duong, Thuy Yen; Tanyaros, Suwat; Page, Larry M.; Zhao, Ya-Hui; Adamson, Eleanor A. S.; Khaironizam, Md. Zain; Bruyn, Mark de; Azizah, Mohd Nor Siti

doi:10.1038/s41598-018-29049-7

Cited by 20 publications

(18 citation statements)

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“…Halfbeaks are a relatively understudied group of fishes that represent an independent evolutionary origin of viviparity that occurred in a geographically distinct region (Southeast Asia) from the more commonly studied Poeciliids. Specifically, we focus on the pygmy halfbeak, Dermogenys collettei, a small, internally fertilizing, viviparous fish inhabiting freshwater rivers, streams and lakes in the Malay Peninsula (Downing Meisner, 2001;Nurul Farhana et al, 2018). Pygmy halfbeaks are characterized by an elongated lower jaw that facilitates prey capture at the surface of the water, where they spend the vast majority of their time.…”

Section: Introductionmentioning

confidence: 99%

Behavioral Variation in the Pygmy Halfbeak Dermogenys collettei: Comparing Shoals With Contrasting Ecologies

et al. 2021

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Variation in biotic and abiotic factors among populations affects individual behaviors by transforming the social landscape and shaping mating systems. Consequently, describing behaviors in natural populations requires consideration of the biological and physical factors that different individuals face. Here, we examined variation in socio-sexual and locomotor behaviors in a small, livebearing, freshwater fish, the pygmy halfbeak Dermogenys collettei, across natural populations in Singapore. The pygmy halfbeak is a surface feeding fish that spends most of the time near the water surface, making it ideal for non-invasive behavioral observations. We compared behaviors between sexes among 26 shoals while simultaneously accounting for environmental variation. We demonstrated that sexual interactions and locomotor behaviors differed among shoals with varying levels of canopy cover and water flow. Specifically, in areas with greater canopy cover, sexual interactions decreased, whereas time spent in a stationary position increased. Sexual interactions were more numerous in still water, where fish spent less time swimming. Variation in the expression of socio-sexual and locomotor behaviors were not associated with differences in the amount of aquatic vegetation, water depth or halfbeak shoal size. Agonistic interactions were robust to environmental effects, showing little variation among environments. However, there were strong sex effects, with males performing more agonistic behaviors and spending less time in a stationary position compared to females, regardless of the environment. Moreover, sexual interactions, measured as actively performed by males and passively received by females, were on average more frequent in males than in females. Our findings help us explore the proximal causes of intraspecific behavioral variation and suggest that fundamental information on socio-sexual behaviors from wild populations can lead to a better understanding of how sexual selection operates when the strength of natural selection varies across environments.

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Section: Introductionmentioning

confidence: 99%

Behavioral Variation in the Pygmy Halfbeak Dermogenys collettei: Comparing Shoals With Contrasting Ecologies

et al. 2021

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“…is collected from the Keisalam River only. It is worth mentioning here that members of the freshwater halfbeak genus Dermogenys are hard to identify to the species level, due to morphometric and colour pattern differences (Farhana et al, 2018). The highly encountered order Cypriniformes is again dominated by the family Cyprinidae where Garra nigricollis is reported for the first time from the Karnaphuli drainage.…”

Section: Garra Sp Common Name: -Local Name: Nghalim Hnarchatmentioning

confidence: 94%

Ichthyofauna of Dampa Tiger Reserve Rivers, Mizoram, North-Eastern India

Lalramliana¹,

Zirkunga²,

Lalronunga³

2020

JEB

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The present study was undertaken to assess the fish biodiversity in buffer zone of rivers of the Dampa Tiger Reserve, Mizoram, India and to evaluate whether the protected river area provides some benefits to riverine fish biodiversity. Surveys were conducted in different Rivers including the buffer zone of Dampa Tiger Reserve during the period of November, 2013 to May, 2014 and October, 2019. Fishes were caught using different fishing nets and gears. Collected fish specimens were identified to the lowest possible taxon using taxonomic keys. Specimens were deposited to the Pachhunga University College Museum of Fishes (PUCMF) and some specimens to Zoological Survey of India (ZSI) Kolkata. Shannon-Wiener diversity index was calculated. A total of 50 species belonging to 6 orders, 18 families and 34 genera were collected. The order Cypriniformes dominated the collections comprising 50% of the total fish species collected. The survey resulted in the description of 2 new fish species, viz. Pethia rutila and Channa aurantipectoralis; 2 new records from India viz., Badis rhabdotus and Psilorhynchus rahmani; one new record from Mizoram viz., Dermogenys sp. and two new records from the Karnaphuli drainage viz., Garra nigricollis and Schistura paucireticulata. The result revealed high diversity of fish species with diversity index of 3.78. The high ichthyofaunal diversity was observed, in this study, revealed the importance of the Dampa Tiger Reserve. The protected area could be important for conservation and management of fish diversity in the region, especially for resident and threatened species.

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“…Several regional DNA barcoding studies have demonstrated its e cacy to delimitate sh species, for instance, in Australia 22 , South China Sea 23 , Indian Ocean 24 , and Indo-Paci c coral shes 25 . DNA barcoding has proven to be a reliable method in identifying cryptic and potentially new sh species [26][27][28][29] , marine larval shes [30][31][32][33] , and food origins .…”

Section: Introductionmentioning

confidence: 99%

Assessing fish diversity of Merbok Estuary and adjacent marine waters by DNA taxonomy: towards building comprehensive DNA barcode reference library

Abidin

Nor

Lavoué

et al. 2021

Preprint

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The Merbok Estuary comprises one of the largest remaining mangrove forests in Peninsular Malaysia. Its value is significant as it provides both direct and indirect services to local and global communities. It also offers a unique opportunity to study the structure and functioning of mangrove ecosystems. However, its biodiversity is still partially described, limiting its research value. Recent inventories based on morphological examination, documented 138 fish species residing, frequenting or subject to entering the Merbok Estuary. Using a molecular approach, we assessed the fish diversity of the Merbok Estuary and its adjacent waters in DNA barcoding 350 specimens assignable to 135 species initially identified based on morphology. Our results revealed the presence of 140 MOTUs, 130 of them are congruent with morphology-based species delimitation. In two cases, barcodes did not permit to differentiate between two morphotypes while they unveiled cryptic diversity within six other species, calling for further taxonomic investigations. This study provides a comprehensive core-list of fish taxa in Merbok Estuary, demonstrating the advantages of combining morphological and molecular evidence to describe diverse but still poorly studied tropical fish communities. It also delivers a large DNA reference collection for brackish fishes occurring in this region which will facilitate further biodiversity-oriented research studies and management activities.

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Exploring hidden diversity in Southeast Asia’s Dermogenys spp. (Beloniformes: Zenarchopteridae) through DNA barcoding

Cited by 20 publications

References 73 publications

Behavioral Variation in the Pygmy Halfbeak Dermogenys collettei: Comparing Shoals With Contrasting Ecologies

Behavioral Variation in the Pygmy Halfbeak Dermogenys collettei: Comparing Shoals With Contrasting Ecologies

Ichthyofauna of Dampa Tiger Reserve Rivers, Mizoram, North-Eastern India

Assessing fish diversity of Merbok Estuary and adjacent marine waters by DNA taxonomy: towards building comprehensive DNA barcode reference library

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