Recent Submissions

  • Kepadatan kerang lumpur Anodontia edentula Linnaeus, 1758 kaitannya dengan parameter lingkungan di Kabupaten Muna

    Rochmady, R; Omar, Sharifuddin Bin Andy; Tandipayuk, Lodewyck S.; Sekolah Tinggi Ilmu Pertanian Wuna Raha, Sulawesi Tenggara 93600, Indonesia; Universitas Hasanuddin, Makassar, Indonesia; Universitas Hasanuddin, Makassar, Indonesia (2016-05-09)
    The research aims to analyze the density of mud clams Anodintia edentula Linnaeus, 1758 relation to environmental parameters, covering organic material content and composition of sediment in Muna regency. Research carried out in coastal Lambiku and Tobea Island. The sample collection begins in March until May 2011, intervals collection example once a month for three months. A collection of mud clams example in a plot trasek (Line Transect Plot) is determined (purposive sampling). A plot observation based on three categories, Plot I near coast, Plot II the transition and Plot III far from the beach, intervals 50m each a plot observation. Analysis data the density use Krebs (1978) formula, relations of density and environmental parameters use corelation and descriptif analysis. The research results show that the density is different of mud clams between Tobea Island and coastal Lambiku. The density of mud clams on the Tobea Island have higher is 33 ind m-2 or 29-40 ind m-2. While density of mud clams in coast Lambiku is 10 ind m-2 or 8-11 ind m-2. The density of mud clams far from the beach between the coastal areas relatively different. While composition sediment and the organic matter on Tobea Island and coastal Lambiku relatively is the same. Phosphates and sulphur concentration on the Tobea island each of 13,90 ppm and 15,76 ppm. Phosphates and sulphur concentration in coastal Lambiku each of 14,55 ppm and 17,01 ppm. Phosphate and sulfur concentrate far from shore show organic material content of sulphur and phosphates is high with density mud clams.
  • Struktur dan komposisi jenis mangrove Desa Bonea dan Kodiri, Kabupaten Muna, Sulawesi Tenggara

    Rochmady, R; Sekolah Tinggi Ilmu Pertanian Wuna Raha, Sulawesi Tenggara 93600, Indonesia (2015-10-19)
    The condition of mangrove ecosystem in Kodiri village is in good condition, because the management effort has been done by indigenous community self-supporting. Mangrove in the village of Bonea classified as damaged, due to the high utilization rate, especially the taking of firewood. The research aimed to analyze the structure and composition of mangrove vegetation in Bonea village, Lasalepa district and Kodiri village, Lohia district. Relative density parameters, relative closure, relative closure type and Important Value Index (INP) are used as indicators to describe the structure and composition of mangrove vegetation. The study was conducted from June to December 2014 located on the coast of Bonea village and Kodiri village. Data analysis was conducted at STIP Wuna Raha Fisheries Laboratory. Observation of mangrove vegetation using the method of line transect and 3 (three) observation points at each location. The point of observation was determined purposively, based on the representation of the mangrove vegetation pattern studied, so there were 6 lines and 18 observation plots at two locations. The data of mangrove vegetation were analyzed descriptively-qualitative. Result of research, found mangrove vegetation in Bonea village dominated Ceriops tagal and Rhizophora apiculata. The relative closure of the type of category is broken and the density of this type of category is rare. Vegetation of mangroves Kodiri village dominated Rhizophora apiculata, Soneratia alba, Bruguera sexangula, Rhizophora stylosa, Soneratia caseolaris, Bruguera gymnorhiza, and Avicenia marina. The relative closing value of both category types and the relative density of this type of category are rare.
  • Aspek bioekologi kerang lumpur Anodontia edentula (Linnaeus, 1758) (Bivalvia: Lucinidae) di perairan pesisir Kabupaten Muna

    Rochmady, R (Universitas Hasanuddin, Fisheries Sciences, 2011-08-05)
    The study was conducted in Tobea Island and coastal Lambiku for analysis: 1) biology aspects, 2) environmental aspects. Data were analysed to see the difference in the two locations using t-test analysis (student) and descriptive. The analysis showed that mangrove ecosystems in Tobea island, the closure of the (51%) and density (1.000 trees ha-1), in coastal Lambiku close (43%) and density (944 trees ha-1). Biological aspects of the growth population of mudclams in the Tobea Island (L∞= 65.6 mm, K= 1.18) lower than in coastal Lambiku (L∞= 73,75 mm, K= 0.73). Results of the t-test (student), morphometric characters of mudclams in Tobea Island and coastal Lambiku significantly different. The length-weight relationship of mudclams of sex male and female in the Tobea Island and coastal Lambiku positive allometric (b ≠ 3). Relative condition factor and sex ratio of mudclams in Tobea Island, significantly different between male and female in coastal Lambiku. The size of the first measure of mature gonads of mudclams in Tobea Island (average of 39,62 mm ranges of 39,20 - 40,04 mm) is lower than in coastal Lambiku (average of 39,58 mm, range of 39,21 - 39,96 mm). The density of mudclams of the Tobea Island (the highest 48 ind m-2, the lowest of the 21 ind m-2) is greater than coastal Lambiku (the highest 15.67 ind m-2, the lowest 5,67 ind m-2). Bioecologycal aspects of mudclams in Tobea Island affected by organic carbon and phosphate. While in coastal Lambiku affected by nitrogen and sulphur by both the growth and density.
  • Perbandingan karakter morfometrik kerang lumpur Anodontia edentula, Linnaeus 1758 di pulau Tobea dan pesisir Lambiku, Kecamatan Napabalano, Kabupaten Muna

    Rochmady, R; Omar, Sharifuddin Bin Andy; Tandipayuk, Lodewyck S. (2011)
    The objective of the research was to aim the morphometric characters of mudclams, Anodontia edentula Linnaeus, 1758 in Tobea Island and in the coast of Lambiku, Napabalano District of Muna Regency. The research carried out in Tobea Island and in the coast of Lambiku was to analyse morphometrics character of mudclams. Data were analysed to perceive the comparison of morphometrics characters of mudclams in Tobea Island and in the coast of Lambiku by using t-test (student) and descriptive analysis. The results of t-test (student) analysis showed morphometric characters of mudclams in Tobea Island and in the coast of Lambiku significantly different as indicated by the t-value is greater than t-tables at the confidence level (=0.05). The morphometric characters of mudclams between the male sex in Tobea island and male in the coast of Lambiku different significantly as indicated by the t-value is greater than t-tables at the convidence level (=0.05). The morphometric characters of mudclams at the confidence level at the male sex in Tobea Island and female in the coast of Lambiku significantly different as indicated by the t-value is greater than t-table. For morphometric characters mudclams in Tobea Island of female and male sex significantly different in the coast of Lambiku as indicated by the t-value is greater than t-table. Morphometric characters in female of mudclams in Tobea Island and female gender were significantly different in the coast of Lambiku. Morphometric characters of mudclams in Tobea Island tend to be smaller than in the coast of Lambiku which the mudclams there tends to be larger.