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All Journal AGRICOLA Bioscientist : Jurnal Ilmiah Biologi
Dandi Saleky
Universitas Musamus
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Immunology & microbiology Social Sciences Veterinary

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Produksi Serasah Mangrove di Biangkuk, Kabupaten Merauke Dandi Saleky; Reny Sianturi
AGRICOLA Vol 10 No 2 (2020): AGRICOLA
Publisher : Universitas Musamus, Merauke, Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35724/ag.v10i2.2736

Abstract

Mangroves are plants that live in tidal or interface areas between terrestrial and marine ecosystems in tropical and subtropical regions. Mangrove ecosystem is one of the coastal ecosystems that have a very important role, especially for organisms, namely as a supplier of nutrients produced by mangrove litter. An observation regarding litter productivity is still limited in Papua, especially in the city of Merauke. The method used in this study is the transect method, using 3 (three) transects. Mangrove litter is taken by using a litter trap container placed under the mangrove tree. The results obtained from litter production in each transect are as follows transect 1 of 167.8 g/m²/Month, Transect 2 of 65.4 g/m²/Month, and Transect 60 g/m²/Month while density mangrove in each transect 1 transect has a higher tree density value of 65 Ind/ m² while in Transect 2 it has a total litter production of 32 Ind / m² and the mangrove density value in Transect 3 is lower compared to stations 1 and 2 which are 25 Ind/m².
Karakter Morfologi dan Genetik Lunella sp. Simon P.O Leatemia; Isma Isma; Thomas F Pattiasina; Dandi Saleky
AGRICOLA Vol 11 No 1 (2021): AGRICOLA
Publisher : Universitas Musamus, Merauke, Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Environmental degradation and the utilization of excess are very influential in a reduction of thepotential of Turbinidae Gastropod Resources. Morphology of shells can changes due to adaptation tothe surrounding environment resulting in misidentification. This study aims to analyze morphology andmolecular character of Turbinidae. Morphometric analysis is done by comparing the measureddimensions of the shell, while the molecular identification is done by using the DNA barcoding usingCOI gene to species identification. The results showed a comparison of growth between thedimensions shell of the Lunella sp. showed the negative allometric and positive allometric. Characterof shell growth between dimensions of the Lunella sp. shows the negative allometric and positiveallometric. Molecular analysis identified Turbinidae was found Lunella sp. its similar to DNAsequence Lunella sp. Sulawesi. The molecular analysis identifies Turbinidae found is Lunella sp. withsimilarities of 98.41 and 98.31%. The environmental conditions can affect change the morphology andgenetic of Turbinidae. DNA barcoding has been successful to identify Turbinidae gastropods.
Growth Pattern and Reproductive Biology of the Mudskipper (Boleophthalmus boddarti) in the Maro River Area, Semangga District, Merauke Regency Nova Permaeta Hartanty; Sunarni; Dandi Saleky
Bioscientist : Jurnal Ilmiah Biologi Vol. 14 No. 1 (2026): March
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v14i1.19986

Abstract

This study aimed to analyze the growth and reproductive patterns of the mudskipper (Boleophthalmus boddarti) in the Maro River area, Semangga District, Merauke Regency. The study was conducted in the Maro River area, Semangga District, Merauke Regency, from August to October 2024. Sampling was carried out twice per month using a purposive sampling technique. Quantitative data analysis was applied to evaluate growth patterns and reproductive characteristics, including sex ratio and gonadal maturity stage (GMS), of the mudskipper (Boleophthalmus boddarti). The results showed that a total of 56 mudskippers were collected during the study, consisting of 20 males and 36 females. The growth pattern analysis yielded the equation W = 0.0018L3.5138 in Sidomulyo Village and W = 0.0015L3.5831 in Urumb Village, indicating a positive allometric growth pattern. In terms of reproduction, the sex ratio of the mudskipper population remained relatively balanced. Regarding gonadal maturity stage, males were found only at GMS I, whereas females were recorded at GMS I and GMS II.
Co-Authors Isma Isma Nova Permaeta Hartanty Reny Sianturi Simon P.O Leatemia Sunarni Sunarni Thomas Frans Pattiasina