Morphometric Variations of Rasbora Group (Pisces: Cyprinidae) in Lake Laut Tawar, Aceh Province, Indonesia, Based on Truss Character Analysis

Abstract

The genetic variation of Rasbora group in Lake Laut Tawar has been reported previously, however information on morphometric variations of this Genus was not available. Hence, the objective of the present study was to evaluate the morphometric characters of Rasbora group in Lake Laut Tawar, in order to contribute useful information on the biology of this important fish. The truss morphometric method was utilized in this study. A total of 45 samples of Depik, 42 samples of Eas and 44 samples of Relo were used in this evaluation. Eight homologous landmarks were determined along the outline of the fish, and based on these landmarks, 14 characters or linear measurements were recognized. Discriminant function analysis was employed to distinguish the fish sample. The results showed that the truss morphological characters could highlight the high differentiation between Relo and the other two groups, and the closeness of Eas and Depik. The morphometric data strongly indicated that Eas and Depik should be regarded as a same species, Rasbora tawarensis, and Relo may be considered as a cryptic species. This finding is in agreement to the genetic data which was published previously.

Morphometrics and genetics variations of mullets (Pisces: Mugillidae) from Aceh waters. Indonesia

“…Similarly, Rahman and Khan (2013) reported an asynchronous relationship between genetic and morphology data of 10 species from Parangipettai Waters, Southeast Coast of India. However, data of agreement was reported by Rasbora group in Lake Laut Tawar, Indonesia (Muchlisin 2013) and genus Kuhlia (Kuhlia xenura and K. sandvicensis) from O'ahu and Hawaii Islands (McRae 2007).…”

“…The supernatant was discharged, and the pellet was washed twice using 70% ethanol, and dried at room temperature for 30 minutes. After that, 60 µL of distilled water was added into the tube and the sample was kept at -20 °C for electrophoresis (Muchlisin et al 2013). The electrophoresis was conducted using 0.8 agaroses,100 voltage and the process lasted for 45 minutes.…”

Effect of Dimethyl sulfoxide (DMSO) and egg yolk on sperm motility, fertility and hatching rates of depikRasbora tawarensis(Pisces: Cyprinidae) eggs after short‐term cryopreservation

“…Hence, conservation and aquaculture programmes for depik are crucially needed. Information of the physiology, ecology and genetics of the depik have been well documented (Muchlisin, , ; Muchlisin, Fadli, & Siti‐Azizah, ; Muchlisin, Musman, Fadli, & Siti‐Azizah, ; Muchlisin, Musman, & Siti‐Azizah, ; Muchlisin, Rinaldi, Fadli, Adlim, & Siti‐Azizah, ). These basic data are essential for aquaculture and conservation development programmes.…”

Morfometrik lima species ikan yang dominan tertangkap di Danau Aneuk Laot, Kota Sabang

“…Menurut Turan (1999) kajian morfometrik telah banyak digunakan dalam biologi perikanan dengan tujuan untuk dapat mengetahui deferensiasi serta hubungan antar spesies ikan dalam populasi, atau dalam spesies antar populasi. Kajian morfometrik ikan dari perairan Aceh masih minim dilakukan, diantara laporan yang ada adalah pada ikan depik, Rasbora tawarensis dan ikan kawan, Poropuntius tawarensis (Muchlisin, 2013), julung-julung, Zenarchopterus dispar (Fadhil et al, 2016), ikan keureling Tor spp. (Thaib, 2012) dan belanak, Mugil spp.…”

“…Teknik morfometrik dapat digunakan untuk mendeskriminan ikan yang tertangkap, serta berguna dalam pengujian yang dapat menampilkan perbedaan bentuk kombinasi dengan statistik multivariat. Sejauh ini teknik truss morphometric dilaporkan lebih efektif dalam mendeskriminan kelompok ikan yang memiliki kemiripan tinggi, teknik ini juga dilaporkan sesuai dan berhasil mendeskriminan tiga kelompok ikan Rasbora di Danau Laut Tawar (Muchlisin, 2013). Hasil yang sama dilaporkan oleh Fernando dan Amarasinghe (2011) pada dua spesies ikan Cichlid di Perairan Sri Langka.…”