Browsing by Author "Elvyra, R."
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Item ANALISIS ISI LAMBUNG IKAN SELAIS DANAU (Ompok hypophthalmus, Bleeker 1846) DI SUNGAI TAPUNG HILIR PROVINSI RIAU(2013-06-26) Saputra, I. I.; Elvyra, R.; YusfiatiStudy on gut content of selais danau fish (Ompok hypophthalmus) at three stations (Selembakan Palas, Flamboyan, Kota Garo) in Tapung Hilir river was conducted from November 2012 to January 2013. The objective of this study was to know about the kinds of selais danau fish food categorized as main food, supplement food and additional food in Tapung Hilir. The gut content was analized using the Index of Preponderance. The result revealed that the main food of selais Danau fish in Selembakan Palas station is Puntius sp (91%) and supplement food are Periplaneta sp (Arhtropoda) (4%), animal debris (3%) and the other Arhtropoda (3%). Selais danau fish in Flamboyan station eats Puntius sp (60%) as a main food, beside that it also eats Periplaneta sp (Arhtropoda) (24%) and animal debris (14%) as supplement food. As an additional food it eats the other Arthropoda (2%). In Kota Garo station the main food is Periplaneta sp (Arhtropoda) (59%), supplement food is Puntius sp (37%) and additional food is animal debris (4%) and the other Arthropoda (0,25%). Male fishes at three stations have Puntius sp as the main food, and the female eat Puntius sp and Periplaneta sp as the main food. The different happens because of habitat condition and energy demand that vary on male and female fishes.Item ANALISIS ISI LAMBUNG IKAN TAPAH ( Wallago leeri ) DI PERAIRAN SUNGAI SIAK DAN SUNGAI KANDIS DESA KARYA INDAH KECAMATAN TAPUNG(2014-03-28) Sari, S.K.; Elvyra, R.; YusfiatiA st udy on gut content analysis of Tapah fish (Wallago leeri) at two stations of Siak and Kandis river has been carried out in February to July 2013. The objective of this study was to know about the kinds of food for Tapah fish ,such a s main, suplement and additional food in Siak and Kandis river. The data was analyzed usi ng the Index of Prepondera nce (the largest part i ndex) by Natarjan and Jingran cit. Effendie (1979). The result of the studyrevealed that the main food of Tapah fish in Siak river station consists of Cyclocheilichthyss p. (48%), the supplement food consists of Ompok sp. (28%), Puntius sp. (12%) , and animal debris (11%), whereas additional food is Rasbora sp . (1 %). Tapah fish in Kandis river has main food which consists of Cyclocheilichthyssp. (43%) , and supplement food consists of Ompok sp. (27%), Puntius sp. (10%), and animal debris (18%) . As an additional food, Tapah fish also feed s on Rasbora sp. (2%).Item INVENTARISASI JENIS-JENIS IKAN DI SUNGAI SINGINGI KABUPATEN KUANTAN SINGINGI(2013-03-04) Zalmi, G.; Elvyra, R.; YusfiatiSingingi river has an important role as one of freshwater fishery resources in Kuantan Singingi. Therefore data and information relating to fish species are needed. The objective of this study is to create inventory of fish species in Singingi river, Kuantan Singingi. The research is conducted by survey method. The samples of fish consist of three individual from each species. The samples of fish were preserved with formalin 4%, 10% and alcohol 70%. Identification of fish was carried in Zoology laboratory, Biology Department, Faculty of Mathematic and Science, Riau University. Fishes founded in Singingi river consists of 4 orders, 13 family, 23 genera, and 38 species. They are family Cyprinidae (21 species), Cobitidae (3 species), Anabantidae (2 species), Channidae (2 species), Bagridae (2 species), Balitoridae (1 species), Belontiidae (1 species), Mastacembelidae (1 species), Akysidae (1 species), Clariidae (1 species), Pangasidae (1 species), Siluridae (1 species), Synbranchidae (1 species)Item KELIMPAHAN ZOOPLANKTON DI PERAIRAN LAUT BANGKA(2013-05-24) Firman, S.; Elvyra, R.; Mahatma, R.This study aims to determine the abundance of zooplankton which in Bangka Sea Waters. This study is part of a collaboration of the Directorate General of Higher Education (DITJEN DIKTI) of the Ministry of National Education and the Directorate of Institutional Research Center for Oceanography Indonesian Institute of Sciences (P2O-LIPI). Sampling for this study was conducted during the Sailing Nationality for Young Scientists Program (PKIM) Batch II 2010 on boat RV. Baruna Jaya VIII on 22th September - 4 October 2010. Sampling for zooplankton was conducted on 20 stations which were divided into 3 locations: south, east and north. Zooplankton sampling method performed by the method of vertical using Plankton nets (Norpac). The amount of zooplankton which were found in Bangka Sea Waters is 4052 individuals. This consist of 6 phyla (Annelida, Arthropoda, Coelenterata, Chaetognatha, Echinodermata and Mollusca), these 6 phyla contain classes of zooplankton which consisting of Polychaeta, Crustacea, Scypozoa, Sagittoidea, Ophiuroidea, and Gastropoda. The most dominant class zooplankton in Bangka Sea Waters is crustaceans at 86,13 %. Abundance mean of zooplankton in Bangka Sea Waters ranges between 8,583-24,662 ind/m3.Item MORFOMETRIK IKAN TAPAH (Wallago leeri Bleeker, 1851) DARI SUNGAI SIAK DAN SUNGAI KANDIS PROVINSI RIAU(2014-03-28) Nathasya, N.; Elvyra, R.; YusfiatiThe study about morphometric of tapah fish (Wallago leeri Bleeker, 1851) from Siak River and Kandis River had been done. The purpose of this study was to compare tapah fish from Siak River and Kandis River using 26 morphometric characters. This study was carried out from February 2013 to July 2013 using survey method. The number of samples which collected was 60 individual of tapah fish, consisted of 30 tapah fish from Siak River and 30 tapah fish from Kandis River. The results indicated the differences of morphometric characters between tapah fish from Siak River and Kandis River. Linear regression analysis showed that tapah fish from Siak River and Kandis River have very weak to very strong relationship. Its growth status showed the positive allometric, isometric, and negative allometric