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All Journal Bioscience Jurnal Ilmu Dasar BIOMA
Tri Rima Setyawati
Jurusan Biologi FMIPA Universitas Tanjungpura
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Control & Systems Engineering Education Immunology & microbiology Mathematics

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Morfometri Kepiting Air Tawar Parathelphulsa maindroni Dari Dua Tipe Habitat di Taman Nasional Gunung Palung Kalimantan Barat Junardi Junardi; Ina Idola; Tri Rima Setyawati
Bioscience Vol 4, No 2 (2020): Biology
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/0202042109331-0-00

Abstract

Freshwater crab Parathelphusa maindroni can live in various types of aquatic habitats. High adaptability can cause differences in body size in response to diverse habitat conditions. This species has been found at Stasiun Cabang Panti Gunung Palung National Park, West Kalimantan, in two different habitat types ununfortunately data on body size is still not available. The purpose of this study was to distinguish the morphometric characteristics of P. maindroni from two different habitats. The P. maindroni crabs were collected with traps and searched using a dip net. Morphometric analysis using 12 characters of body parts. The number of specimens was collected as many as 52 individuals, 28 individuals from river and 24 individuals from freshwater swamp habitat. The freshwater crab P. maindroni that lives in two different types of habitat can only be identified based on the width of the carapace, this character can also be used to differentiate of sex.
Gametogenesis of Nypha Palm Worm Namalycastis rhodochorde (Polychaeta: Nereididae) Junardi Junardi; Tri Rima Setyawati; Edy Yuwono
Jurnal ILMU DASAR Vol 11 No 1 (2010)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (308.444 KB)

Abstract

The Nypha Palm Worm Namalycastis rhodochorde has been used as bait for fishing in Pontianak. Culturing the worm is one potential effort for its commercialization as well as to overcome the overexploitation of the worm which also brings about the degradation of its natural habitat. Samples of the worm were collected from mangrove forest area in Sungai Kakap, West Kalimantan. Fresh sample of gametes from coelomic fluid were observed carefully under compound microscope to determine phase of gamete development. Oogenesis consisted of three consecutive stages namely immature, submature, and mature with ≤40 μm, 40<x<120 μm, and ≥120 μm in diameter, respectively. The spermatogenesis phases consisted of, spermatogonia, spermatid tetrad and spermatozoa. 
Growth of Bacillus spp. Isolated From Nipah Worm Intestine (Namalycastis rhodochorde) With Different Combination of pH and Salinity Rikhsan Kurniatuhadi; Ari Hepi Yanti; Tri Rima Setyawati; Eka Karunia
Bioma : Jurnal Ilmiah Biologi Vol 12, No 1: April 2023
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/bioma.v12i1.14387

Abstract

Bacillus spp. (NrLtF1, NrLtF5, and NrLtG2) isolated from the digestive tract of the Nypa palm worm (Namalycastis rhodochorde) were assumed to have growth characteristics according to the habitat conditions of the nypa worm. Nypa worms live in estuary environments that are affected by seawater intrusion. Salinity and pH are two environmental factors affecting gastrointestinal isolates' growth from nypa palm worms. This study aimed to determine the effect of pH and salinity on the media on growth patterns and determine the optimum combination of pH and salinity for Bacillus spp. The study was conducted using a spectrophotometry method using a microplate reader with Glucose Yeast Peptone (GYP) as a medium for bacterial growth. The medium's pH and salinity values were adjusted by adding 5M NaOH and 5M HCl to obtain pH values of 4, 5, 6, and 7, respectively. Addition of NaCl to the growing medium to get salinity values of 5%, 10%, and 15%. Optimization was determined by incubation at a density of 595 nm at a temperature of 31oC for 24 hours. The results showed that Bacillus spp. could grow well at pH 6 with a salinity value of 15%, pH 6 with a salinity value of 10%, and pH 6 with a salinity value of 5% based on contour plot design. The Optimum growth of Bacillus spp. with pH and salinity expects to be a reference for developing feed products based on indigenous nypa palm worms. 
Co-Authors Ari Hepi Yanti Edy Yuwono Eka Karunia Ina Idola Junardi Junardi Rikhsan Kurniatuhadi, Rikhsan