Article Per Year (5 Year)
p-Index From 2019 - 2024
0
P-Index
This Author published in this journals
All Journal Journal of Marine Research
Ria Azizah
Fakultas Perikanan dan Ilmu Kelautan Universitas Diponegoro, Semarang, Indonesia
Earth & Planetary Sciences

Published : 3 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search

 1 
PENGARUH PENGGUNAAN DIVINE CIGARETTE TERHADAP LAJU PERTUMBUHAN IKAN BANDENG (Chanos chanos Forskåll, 1775) Aisa, Aulia; Sunaryo, Sunaryo; Azizah, Ria
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (233.463 KB) | DOI: 10.14710/jmr.v2i2.2354

Abstract

Market demand for milkfish (C. chanos Forskåll, 1775) is continually to increase, since it is used for consumption and live bait for tuna and skipjack. The purpose of this research was to determine the effect of the Divine cigarette fumigation in fish feed on the growth of milkfish (C. chanos Forskåll, 1775). This research used experimental laboratories method with 4 treatments and 3 replications. The first treatment (A) was fumigation the Divine cigarette on fish feed for 5 minutes, the second treatment (B) for 10 minutes, the third treatment (C) for 15 minutes, and the fourth treatment (K) for without fumigation (control). Results of this research showed the highest specific growth rate was obtioned in treatment C which was equal to 2.51% daily. The lowest of mercury content was on the treatment A and C, resulting in decreased levels of mercury in milkfish (C. chanos Forskåll, 1775). Based on the result it can be concluced that the fumigation treatment of Divine cigarette for 15 minutes in fish feed can increased the specific growth rate of the milkfish (C. chanos Forskåll, 1775).
Struktur Komunitas Zooplankton di Ekosistem Lamun Alami dan Berbagai Lamun Buatan Perairan Teluk Awur, Jepara Hibatul, Tasa; Riniatsih, Ita; Azizah, Ria
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (225.601 KB) | DOI: 10.14710/jmr.v2i4.3679

Abstract

Zooplankton are one component in the food chain as measured in relation to the productivity value of an ecosystem. This is because the zooplankton is a major connecting link between plankton and nekton. Teluk Awur Waters are shallow waters with depths less than 10 meters. These waters are also under pressure from various human activities. The aim of this research were to find out the community structure of Zooplankton on native and artificial seagrass ecosystems in Teluk Awur waters, Jepara. The method of this research was a case study method with the exploratory nature of data collection used Sample Survey Method. The location was set as a research Station was the Station 1, as the native seagrass, and Station 2, 3, and 4 as the artificial seagrass. Sampling was conducted every 2 weeks for 4 times of sampling of each 3 times making use planktonnet with mesh size 45 μm. Sampling was carried out horizontally in the morning on July 2012 to September 2012. The results obtained 37 genera on native seagrass, while on the third of artificial seagrass was obtained 51 genera. Abundance obtained on the native seagrass was an average of 3845,482 specs/L and on the artificial seagrass was an average of 3146,303 specs/L. Diversity of zooplankton showed the medium diversity, an average of 2,08 obtained on the native seagrass and an average of 2,15 obtained on the artificial seagrass. Homogenity obtained average of 0,48 on the native seagrass and 0,50 on the artificial seagrass which is showed that the level of homogeneity is in medium range. The index of domination on the native seagrass was obtained an average 0,51 which is showed that the level of dominance is in medium range and on the artificial was obtained an average 0,49 which is showed that the level of dominance is in low range.
Hubungan Panjang Berat Dan Faktor Kondisi Loligo chinensis yang Didaratkan di TPI Tambak Lorok Semarang Sitompul, Noel Mansen; Azizah, Ria; Munasik, Munasik
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jmr.v10i2.29991

Abstract

Loligo chinensis merupakan salah satu jenis cumi-cumi yang memiliki nilai ekonomis penting di TPI Tambak Lorok Semarang. Produksi cumi-cumi merupakan hasil tangkapan dari alam, upaya penangkapan yang semakin tinggi dapat menyebabkan penurunan stok sumberdaya cumi-cumi. Tujuan penelitian ini adalah untuk mengetahui aspek biologi L.chinensis yang ada di Tambak Lorok yang meliputi hubungan panjang berat, faktor kondisi, dan pola pertumbuhan. Penelitian ini dilaksanakan pada bulan Juni-Juli 2020. Analisis data yang digunakan dalam penelitian adalah regresi linier sederhana dari log PM (panjang mantel) dan log W (weight) untuk mengetahui hubungan panjang beratnya. Nilai hubungan panjang berat L.chinensis mempunyai persamaan W = 0,00048L2,4921 untuk keseluruhan sampel, W = 3,237L0,84 pada betina dan W = 3,29L0,827 pada jantan dengan nilai slope (b) 2,4921; 0,84; dan 0,827. Nilai slope tersebut menunjukkan bahwa pertumbuhan L.chinensis bersifat alometrik negatif. Nilai faktor kondisi (Kn) = 1,064 pada keseluruhan sampel, Kn = 1,713 pada betina dan Kn = 1,63 pada jantan, nilai tersebut menunjukkan spesies ini tergolong memiliki badan yang kurus. Pertumbuhan panjang mantel (PM) L.chinensis tumbuh lebih lambat dibanding organ tubuh lain, kecuali terhadap berat tubuhnya. Loligo chinensis is one type of squid that has economic value crucial in the Tambak Lorok Semarang. Squid production mainly comes from nature, high fishing effort can cause a decrease in squid resource stock. The purpose of this study is to know the biological aspect L.chinensis in the Tambak Lorok include long weight relationships, condition factors, and the quality of alometry growth. The study was carried out in June-July 2020. The data analysis used is simple linear regression from the PM’s log (mantle length) and log W (weight) to know the relationship of its weight length. The relationship value between total length and total weight of L.chinensis has a W = 0,00048L2,4921 equation for the entire sample, W = 3,237L0,84 in the female and W = 3,29L0,827 in the male with slope (b) 2,4921; 0,84; and 0,827. Value slope shows the growths L.chinensis is negative alometrice. The value of the condition factor (Kn) = 1,064 in the entire sample, Kn = 1,713 in the female and Kn = 1,63 in the male. The value suggests that the species is thick-skinned. The growth of the mantle length (PM) of L.chinensis grows slower than other organs of the body, except for its total weight.
Co-Authors Aulia Aisa Ita Riniatsih Munasik Munasik Sitompul, Noel Mansen Sunaryo Sunaryo Tasa Hibatul