Four New Species of the Rasbora trifasciata-Group (Teleostei: Cyprinidae) from Northwestern Sumatra, Indonesia

Lumbantobing, Daniel N.

doi:10.1643/ci-09-155

Cited by 19 publications

(15 citation statements)

References 13 publications

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“…Rasbora adisi sp. nov. is distinguished from its congeners by a combination of the following characters: symphysial knob not well developed (Figure 7); postdorsal length, when carried forward, falling short of the posterior margin of the eye (Figure ); lachrymal groove indistinct (Figure 7); lateral line complete, with 29–33 (mode 31) perforated scales; usually ½4 (rarely 5 or ½5) scales between the dorsal‐fin origin and the lateral line; predorsal scales usually 15 or 16 (rarely 14 or 17); circumpeduncular scales 14; midlateral stripe intense, about ¼–⅓ scale width wide anteriorly, ½ scale width wide posteriorly; basal reticulation parenthesis‐shaped (sensu Lumbantobing, 2010, 2014; Figure 8), 3–3½ scales wide, not apparent posterior to the origin of the anal fin; and by the absence of a dark patch in the mid‐humeral region (Figure 8).…”

Section: Resultsmentioning

confidence: 99%

A molecular phylogeny of the freshwater‐fish genusRasbora(Teleostei: Cyprinidae) in Sri Lanka reveals a remarkable diversification—And a cryptic species

Sudasinghe

Pethiyagoda

Ranasinghe³

et al. 2020

J. Zool. Syst. Evol. Res.

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The diversity of the freshwater‐fish genus Rasbora (Cyprinidae) on Sri Lanka (five species) is high compared with the four species reported from the peninsula of India, from which the island's cyprinid fauna is derived. The paucity of characters by which species of Rasbora can be phenotypically distinguished renders field identification difficult, adversely affecting the estimation of populations and distributions, with consequences for conservation and management, increasing also the risk of taxonomic inflation. From a sampling of 90 sites across Sri Lanka and based on phylogenetic and haplotype analyses of sequences of cox1 and cytb mitochondrial, and rag1 and irbp nuclear markers, we review the species diversity and phylogeography of Rasbora on the island. Molecular analyses recover, in addition to the five species previously reported, a new (cryptic) species: Rasbora adisi sp. nov. Uncorrected pairwise cox1 genetic distances between species range from 2.0 to 12.3 percent. The Sri Lankan diversification derives from a common ancestor which arrived from India during a sea‐level low‐stand in the mid‐Miocene (15.1 Ma [95% HPD: 11.5–19.8 Ma]), when the present‐day island was subaerially connected to the Indian subcontinent by a broad isthmus. This gave rise to a clade comprising five species—R. adisi sp. nov.,Rasbora armitagei, Rasbora microcephalus, Rasbora naggsi and Rasbora wilpita—with a crown age of 9.9 Ma (95% HPD: 7.1–13.3 Ma) and to a clade comprising Indian and Sri Lankan populations of Rasbora dandia, which themselves are reciprocally monophyletic. Morphological analysis of 334 specimens discriminates between most species which, however, are most reliably diagnosed by chromatic characters. The four endemic species exhibit a pattern of inter‐basin dispersal via headwater capture, followed by vicariance, explaining the high diversity of the genus on the island.

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Section: Resultsmentioning

confidence: 99%

A molecular phylogeny of the freshwater‐fish genusRasbora(Teleostei: Cyprinidae) in Sri Lanka reveals a remarkable diversification—And a cryptic species

Sudasinghe

Pethiyagoda

Ranasinghe³

et al. 2020

J. Zool. Syst. Evol. Res.

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“…Terdapat 12 jenis ikan dari famili Cyprinidae menempati D. Maninjau ( Weber dan Beauford ,1913, 1916dan 1922 Rosma, 2013. Jenis ikan lainnya puyu Anabas testudinius, baung (Hemibargus nemurus), tidak ditemukan pada pengamatan ini, namun ditemukan jenis baru ikan Rasbora maninjau (Lumbantobing, 2014) yang sebelumnya ikan bada diidentifikasi sebagai Rasbora argyrotaenia (Triyanto 2003dalam Sulastri (et al, 2012.…”

Section: Keanekaragaman Sumber Daya Ikanunclassified

Kondisi Lingkunganperairandankeanekaragaman Sumberdaya Ikan Di Danaumaninjau, Sumaterabarat

Sulastri

Nomosatriyo

Hamdani

2016

BAWAL Widya Riset Perikanan Tangkap

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ABSTRAKDanau Maninjau merupakan perairan eutrofik yang telah mengalami degradasi kualitas air serta sering terjadi kematian ikan secara masal. Degradasi kualitas air dikhawatirkan mempengaruhi perkembangan populasi dan keanekaragaman sumberdaya ikan. Penelitian ini bertujuan untuk mengetahui kondisi kualitas air terkini dan perkembangan keanekaragaman sumber daya ikan di Danau Maninjau. Pengamatan kualitas air dilakukan pada tahun 2014 di delapan stasiun, mencakup parameter suhu, pH, DO, konduktivitas, potensi oksidasi reduksi, kecerahan perairan yang diukur secara in situ. Parameter amonia, nitrit, total nitrogen, fosfat, total fosfor, total bahan organik, klorofil-a dianalisis di laboratorium menggunakan metoda standard, dan fitoplankton menggunakan metoda Lacey Drop Microtransect. Informasi keanekaragaman sumber daya ikan diperoleh dari hasil tangkapan nelayan, pedagang ikan dan hasil pengamatan terdahulu. Kecerahan perairan menunjukkan nilai yang rendah (1,75-2,15 m). Suhu 27,5-30,33 o C, nilai pH pH>9 atau di atas baku mutu untuk perikanan dijumpai di dua stasiun. Konsentrasi DO rendah (<2 mg/L) dan kondisi anoksik (0 mg/L) ditemukan pada kedalaman 9 -15 m. Kolom anoksik terus naik ke kolom bagian atas perairan, mengindikasikan kondisi kualitas air Danau Maninjau terus mengalami degradasi. Konsentrasi amonia umumnya diatas 0,02 mg/L atau kurang mendukung kehidupan ikan. Danau Maninjau diindikasikan kaya unsur hara fosfor. Fitoplankton didominasi oleh jenis alga biru hijau (Planktolyngbia sp). Terdapat peningkatan sumber daya ikan eksotik dan beberapa diketahui merupakan species asing invasif yang mampu beradaptasi pada kondisi kualitas air yang rendah. Di sisi lain beberapa jenis sumber daya ikan asli danau jarang dan tidak dijumpai pada pengamatan ini. Kata Kunci: Kualitas air; eutrofik; degradasi sumber daya ikan; Danau; Maninjau ABSTRACT Lake Maninjau is a eutrophic lake which has experienced a degradation of water quality and mass fish kill frequently. It worried about their effect to the fish resources diversity and population of indigenous species. This study conducted in 2014 was to know the current of environmental condition and the development of fish resources diversity in Lake

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“…Ikan seluang dinilai potensial untuk dikembangkan sebagai ikan hias maupun konsumsi di daerah Sumatera. Ikan ini dikenal dengan nama Rasbora (Lumbantobing, 2014), pada beberapa daerah misalnya Aceh Tengah ikan sejenis yang dikembangkan adalah Depik (Rasbora tawarensis) (Hasri et al, 2011;Muchlisin, 2011). Di Pulau Jawa dikembangkan ikan dengan istilah ikan wader (Rasbora lateristriata, Rasbora argyrotaenia, Rasbora aprotaenia) (Budiharjo, 2002).…”

Section: Introductionunclassified

Karakter Morfometrik, Pertumbuhan, Dan Sintasan Tiga Spesies Ikan Seluang (Famili: Cyprinidae) Asal Pulau Bangka

Syarif

Prasetiyono

2019

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Penelitian ini bertujuan untuk mengevaluasi profil keragaman fenotipe ikan seluang (Rasbora) asal Pulau Bangka untuk pengembangan budidaya. Sampel ikan yang dikoleksi berasal dari lokasi sungai sekitar Desa Balunijuk, Kabupaten Bangka. Sebanyak tiga jenis ikan Seluang (Famili Cyprinidae) antara lain Rasbora einthovenii, Brevibora dorsiocellata, dan Trigionopoma gracile telah ditemukan. Pengukuran truss morfometrik dilakukan untuk melihat profil fenotipe ketiga spesies ikan seluang tersebut. Hasil penelitian menunjukkan bahwa penciri utama yang dapat membedakan ketiga spesies secara spesifik adalah perbandingan rasio truss morfometrik antara karakter panjang ekor (PE) dengan lebar badan III (LB-III). Persentase sintasan tertinggi pada Brevibora dorsicellata yang dipelihara pada pH 5-6 yaitu 93,30 ± 5,80%; sedangkan persentase sintasan terendah adalah Trigonopoma gracile dengan nilai 76,60 ± 5,80% dipelihara pada pH 5-6 dan 7. Rasbora einthovenii yang dipelihara pada pH 5-6 menunjukkan nilai rata-rata pertambahan bobot mutlak yang lebih tinggi dibandingkan pH 7. Rata-rata pertambahan bobot mutlak dan pertambahan panjang mutlak pada Brevibora dorsiocellata dan Trigonopoma gracile memiliki kecenderungan lebih tinggi pada pemeliharaan di pH 5-6 dibandingkan pH 7.The research was aimed to evaluate the phenotypes profile of rasbora fish from Bangka Belitung Islands for aquaculture development. Samples of rasbora fish were collected from the rivers near Balunijuk Village, Bangka Residence. Three species of rasbora (Cyprinidae Family) which consisted of Rasbora einthovenii, Brevibora dorsiocellata, and Trigionopoma gracile.were collected . The truss morphometrics measurement was conducted to determine the phenotypic profiles of the three species. The results showed that the main identity characteristics to differentiate the three species were tail length (TL) and body width III (W-III). The highest survival rate was achieved by Brevibora dorsiocellata cultured in waters with pH 5-6 which was 93.30 ± 5.80%. The lowest survival rate was attained by Trigonopoma gracile which was 76.60 ± 5.80% cultured in pH 5-6 and 7. The Rasbora einthovenii cultured in waters with pH 5-6 showed the highest absolute weight gain compared to that of cultured in waters of pH 7. Brevibora dorsiocellata and Trigonopoma gracile tended to have better absolute weight and absolute length gain when cultured in waters with pH 5-6 compared to that of pH 7.

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Four New Species of the Rasbora trifasciata-Group (Teleostei: Cyprinidae) from Northwestern Sumatra, Indonesia

Cited by 19 publications

References 13 publications

A molecular phylogeny of the freshwater‐fish genusRasbora(Teleostei: Cyprinidae) in Sri Lanka reveals a remarkable diversification—And a cryptic species

A molecular phylogeny of the freshwater‐fish genusRasbora(Teleostei: Cyprinidae) in Sri Lanka reveals a remarkable diversification—And a cryptic species

Kondisi Lingkunganperairandankeanekaragaman Sumberdaya Ikan Di Danaumaninjau, Sumaterabarat

Karakter Morfometrik, Pertumbuhan, Dan Sintasan Tiga Spesies Ikan Seluang (Famili: Cyprinidae) Asal Pulau Bangka

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