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All Journal Advances in Tropical Biodiversity and Environmental Sciences
Yudiana Jasmanindar
Nusa Cendana University
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Environmental Science Immunology & microbiology Medicine & Pharmacology Veterinary Other

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Effect of Amazon Sword (Echinodorus grisebachii) Plant Density on Specific Growth Rate of Platy Fish (Xiphophorus maculatus) Ardiansyah Ardiansyah; Felix Rebhung; Yudiana Jasmanindar
Advances in Tropical Biodiversity and Environmental Sciences Vol. 8 No. 1 (2024): February 2024: Pages 1-57
Publisher : Institute for Research and Community Services Udayana University (LP2M Universitas Udayana)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/ATBES.2024.v08.i01.p07

Abstract

This study aimed to determine the effect of Amazon sword plant density on the specific growth rate of platyfish. The research during April-May was carried out in the dry land lab of the Semiri islands, University of Nusa Cendana. Platy fish that use as many as 120 tails. The research method used a completely randomized design with four treatments and 3 replications. Control treatment (without plants; treatment A (using three root plants), treatment B (using five root plants), and treatment C (using seven root plants). The best treatment results were shown in treatment C with an absolute average weight value of 0. 35 g. ANOVA showed that the difference in the density of Amazon sword plants in rearing media affected platyfish's water quality and growth rate.
Morphometric Feather Shells (Anadara antiquata) in Balauring and Dolulolong Waters, Lembata District Astuti Arni; Yudiana Jasmanindar; Welem L. Turupadang
Advances in Tropical Biodiversity and Environmental Sciences Vol. 9 No. 1 (2025): February 2025: Pages 1-66
Publisher : Institute for Research and Community Services Udayana University (LP2M Universitas Udayana)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/ATBES.2025.v09.i01.p06

Abstract

Shellfish (Anadara antiquata) is a type of marine biota from the bivalve class. This species is a vital source of income for coastal communities. This study aims to compare the morphometry and population density. The method used is line transect and quadrant transect. The size of the quadrant/plot is 2x2 m², and the distance between 1 quadrant and another quadrant is 2 m. The data analysis used is multiple linear regression and the t-test. The results showed that the morphometric length of the shells in the waters of Balauring Village = 22.7 mm, in the seas of Dolulolong = 25.9 mm, the width in the waters of Balauring Village = 15.6 mm, in the waters of Dolulolong Village = 18.4 mm, the height in the seas of Balauring Village = 12.3 mm, in Dolulolong waters = 17.1 mm, while the weight of clams in Balauring Village waters = 4.3 grams and in Dolulolong Village waters = 4.8 grams, and the value of the population density of shellfish for point I = 0.55 ind/m², point II = 0.94 ind/m², and point III = 1.01 ind/m². The morphometrics in Balauring waters are greater than in Dolulolong waters. The population density in Balauring and Dolulolong waters did not experience a significant difference.
Co-Authors Ardiansyah Ardiansyah Astuti Arni Felix Rebhung Welem L. Turupadang