This study has been conducted from May to July 2016 to inventory the species of fish from Sipogas lake, Rokan Hulu District, Riau Province. Result showed a total of 353 individuals of fish belonging to 3 order, 7 families, 13 genera and 14 species were recorded in this study, by using survey method at 4 stations, namely Anabas testudineus, Barbodes gonionotus, Belontia hasselti, Channa striata, Cyclocheilichthys apogon, Hampalamacrolepidota, Helostoma temminckii, Kryptopterus limpok, Ompok eugeneiatus, Osteochilus hasseltii, Osteochilus mycrocephalus, Pristolepis grooti, Puntius lateristriga and Rasbora sp. Cyprinidae was the predominant fish in this study.
This study was conducted in Sangkir river branch of Rokan Kiri river Sangkir village, Rokan Hulu district, Riau Province from May of July 2016. The aim of this study was to inventory the fish species in Sangkir river branch of Rokan Kiri River with direct observation (survey). Five sampling locations were determined purposely based on the environmental condition that could be represented by the river condition. A total of 288 individuals of fish belonging to 3 orders, 7 families, 13 genera and 16 species were recorded in this study, namely Barbodes balleroides, Barbodes gonionotus, Barbichthys leavis, Channa striata, Cyclocheilichthys apogon, Labiobarbus fasciatus, Mystus nigriceps, Ompok eugeneiatus, Osteochilus hasseltii, Osteochilus mycrocephalus, Pangio semicincta, Pristolepis grooti, Thynnichthys polylepis, Trichogaster leerii, Trichogaster trichopterus and Trichopsis vittata. Cyprinidae was the most abundance fish in this study.Penelitian ini telah dilaksanakan di sungai Sangkir, anak sungai Rokan Kiri, desa Sangkir, Kabupaten Rokan Hulu, Provinsi Riau pada bulan Mei sampai Juli 2016. Penelitian ini bertujuan untuk mengetahui jenis-jenis ikan di sungai Sangkir anak Sungai Rokan Kiri dengan metode pengamatan langsung (survei) dengan penetapan stasiun pengambilan sampel secara purposive sampling. Penetapan stasiun berdasarkan kondisi lingkungan yang terdiri dari 5 stasiun penelitian. Hasil penelitian didapatkan sebanyak 288 individu ikan yang terdiri dari 3 ordo, 7 famili 13 genus dan 16 spesies. Spesies yang didapatkan yaitu Barbodes balleroides, Barbodes gonionotus, Barbichthys leavis, Channa striata, Cyclocheilichthys apogon, Labiobarbus fasciatus, Mystus nigriceps, Ompok eugeneiatus, Osteochilus hasseltii, Osteochilus mycrocephalus, Pangio semicincta, Pristolepis grooti, Thynnichthys polylepis Trichogaster leerii, Trichogaster trichopterus dan Trichopsis vittata. Cyprinidae merupakan kelompok ikan yang paling banyak dalam penelitian ini.
A new mysid, Heteromysoides songkhlaensis, is reported from shallow water in the Songkhla Lagoon, southern Thailand. The new species is closely similar to H. nana in having a triangular rostrum and the eyestalk without a process at the anteromesial corner. However, the new species can be readily distinguished from H. nana by three setae on the inner margin and five setae on distal margin of the second segment of the mandibular palp; the carpopropodus of the fifth and sixth thoracic endopod of the new species is composed of four articles, and the telson of the new species is distally rounded, shorter than the sixth abdominal somite, and 1.3 times longer than its basal width; the spines on the telson form elongated spines from the distal to posterior margin. The new species also resembles H. dennisi, H. simplex, and H. stenoura; however, it differs by (1) the presence of a rounded distal margin of telson, and (2) absence of a sharp process on the distolateral corner of the eyestalk.
This study has been conducted from May to July 2016 in Panjang island, Bangka Tengah District,Bangka Belitung Province. The aims of this study was to evaluate the species of sea urchins by usingsurvey method at four sites. Sampling was done by using a square transect of 50 x 50 m. A total of868 individuals of sea urchin belonging to 2 species were recorded in this study, namely Diademasetosum and Echinothrix calamaris. D. setosum was the most abundant in individual number (828individuals) meanwhile E. calamaris only 40 individuals.Keywords: Diadema setosum, Echi nothrix calamaris, reef flat
The objective of this study was to determine the diversity of the suborder Ensifera in Dusun 3, Rambah Hilir Tengah, Rambah Hilir Sub-District, Rokan Hulu District, Riau Province, Indonesia. The study was conducted from September 2015 to January 2016 at six sampling locations by sweep net and hand picking at day and night hours. We recorded 17 species of the Ensifera belonging to 12 genera, 2 families, and 10 subfamilies. The diversity comprised of Conochepalus maculatus, Conochepalus melaenus, Conochepalus sp., Elbenia sp., Elimaea sp., Euscyrtus concinnus, Hexacentrus unicolor, Loxoblemus parabolicus, Mecopoda elongate, Mecopoda sp., Nisitrus vittatus, Orthelimaea sp., Podoscirtinae species 1 (unidentified), Teleogryllus emma, Teleogryllus sp., Trellius sp. and Xabea sp. The C. maculatus and E. concinnus were the predominant species in this study.
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