Diversity of Macroalgae in Kasiak Gadang Island Nirwana Beach Padang West Sumatera Indonesia

This study had been conducted in October – November 2014. This study aims to know about the diversity of macroalgae in Kasiak Gadang Island, Nirwana Beach, Padang, West Sumatra Indonesia. The method used in this research is line and belt transect. The result of this study is five species of macroalgae founded on this island. There are Padine minor, Sargassum crassifolium, Sargassum cristaefolium, Turbinaria decurrens, and Halimeda sp. Based on relative density, P. minor had 67.15% at Station I and 51.72% at Station II. S. crassifolium had 83.52% at Station III. T. decurrens had 50.86% at Station IV. The index of diversity of macroalgae in Kasiak Gadang Island is about 0.48 – 1.27. According to the diversity index criteria, macroalgae diversity in this island is considered being in low

Deskripsi Ikan Pantau Janggut, Esomus Metallicus Ahl 1924 (Cyprinidae) dari Anak Sungai Siak dan Kanal-kanal di Provinsi Riau [Description Of Pantau Janggut Fish, Esomus Metallicus Ahl 1924 (Cyprinidae) From Tributaries Of Siak River And Canals In Riau Province]

Pantau janggut (Esomus metallicus) adalah ikan air tawar yang tergolong ke dalam famili Cyprinidae dan genus Esomus. Ikan ini dijumpai di anaksungai-anaksungai Siak, yaitu: Sungai Tenayan (berada di wilayah Kecamatan, Tenayan Raya, Kota Pekanbaru) dan Sungai Tapung Mati (berada di wilayah Desa Bencah Kelubi, Kecamatan Tapung, Kabupa-ten Kampar) serta di parit-parit Kota Pekanbaru sekitar Jalan H.R. Soebrantas. Ikan pantau merupakan ikan berukuran kecil (panjang tubuh maksimum 7,3 cm), tubuhnya pipih memanjang, bukaan mulut kecil dengan posisi mulut menga-rah ke atas, memiliki dua pasang sungut (sungut rostral mencapai belakang bola mata dan sungut rahang atas mencapai permulaan dasar sirip anal), pada sisi lateral tubuh terdapat pola warna hitam berbentuk seperti pita memanjang mulai dari bagian atas tutup insang hingga ke pangkal sirip ekor. Sirip dorsal dan analnya berukuran pendek dengan posisi ke-dua sirip pada tubuh saling bertolak belakang, akan tetapi permulaan sirip dorsal sedikit di depan awal dasar sirip anal. Ikan ini memiliki gurat sisi tetapi tidak lengkap

Sebaran Ukuran, Hubungan Panjang-Berat dan Faktor Kondisi Ikan Pantau Janggut (Esomus Metallicus AHL) di Sungai Tenayan dan Tapung Mati, Riau

The research about length frekuency distribution, length-weight relationshipand factor condition stripped flying barb in Tenayan and Tapung Mati River, RiauProvince have been conducted from May 2010 until April 2011. Fishes were caughtby floating net (2 x 5 m) and scoopnet (diameter 0,5 m). The fish samples werecollected every month, and fish collecting based on sensus method. The researchpurpose to know the biggest length frekuency distribution of stripped flying barb inthe nature population. Growth pattern and condition factor of stripped flying barb.Result shown that the population of stripped flying barb is dominate by lengthfrekuency distribution 41 – 50 mm, growth pattern of fish was allometric negativeand value condition factor of the female is the biggest than the male fishes