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Journal : Jurnal Perikanan Universitas Gadjah Mada

Aspek Biologi dan Potensi Lestari Sumberdaya Lobster (Panulirus spp.) di Perairan Pantai Kecamatan Ayah Kabupaten Kebumen Kadafi, Muammar; Widaningroem, Retno; Soeparno, Soeparno
Jurnal Perikanan Universitas Gadjah Mada Vol 8, No 1 (2006)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.171

Abstract

The research on biological aspects and maximum sustainable yield of spiny lobster (Panulirus spp.) in Ayah coastal waters Kebumen Regency aimed to know biological aspects (including species of lobster, length-weight relationships, and sex-ratio), maximum sustainable yield, and exploitation rate of spiny lobster. Biological data were collected in January-February 2004 with census and survey methods. Production and effort data between 1998 to 2003 were used to estimate maximum sustainable yield of spiny lobster. This research found six species of lobsters (Panulirus homarus, P. ornatus, P. penicillatus, P. longipes, P. versicolor, and P. polyphagus). Length-weight relationships based on the sex and carapace length showed isometric and allometric growth models. Male and female ratio was 1,06:1. The maximum sustainable yield was 19,498 kg/year and the exploitation in this area was already overfished.
KEMAMPUAN ADAPTASI KEPITING BAKAU (Scyla serrata) TERHADAP PERUBAHAN SALINITAS AIR Widaningroem, Retno; Isnansetyo, Alim
Jurnal Perikanan Universitas Gadjah Mada Vol 1, No 1 (1996)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.8843

Abstract

Objectives of this research were to know water salinity change which can be use for culturing and fattening of mud crab, and to know adaptation of mud crab on water salinity change. The research used modified bioassay method and completely randomized factorial design consisted of two factor namely water salinity change (0,5 and 10 ppt of water salinity change) and duration of water salinity change (3 and 6 hours).The result indicated that decreasing salinity by 5 and 10 ppt per 3 and 6 hours from 20 to 0 ppt could be adapted by mud crab. As well as increasing if salinity by 5 and 10 ppt per 10 and 6 hours from 20 to 5 ppt could be adapted by mud crab. Mud crab was able to adapt water salinity change by 5 and 10 ppt per 3 and 6 hours from 0 to 50 ppt.
Parasit Anisakis sp. Pada Populasi Layur (Trichiurus sp.) yang Didaratkan di Pelabuhan Ikan Cilacap Suadi, Suadi; Helmiati, Senny; Widaningroem, Retno
Jurnal Perikanan Universitas Gadjah Mada Vol 9, No 2 (2007)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.35

Abstract

The aims of this research were to determine the population parameters of hairtails (Trichiurus sp.) and the potential use of fish parasite (Anisakis sp.) for its stock assessment. Fishery survey was conducted at southern coast of Cilacap, Central Java on September to October 2004. Total length and weight of 527 fish samples were measured in five periods during the field survey and 30 samples were collected randomly for further observation to analyze the Anasakis sp., sex ratio, and gonad maturity. The average length of catched fish was ranged between 62  to 70 cm and weight was 200  to 250 g. The  length-weight (L-W) relationship indicated positive allometric growth (b=3.6076). Sex ratio was balance at 1:1 with gonad maturity range between I to IV for female and I to III for male. Anisakis sp. were found as endoparasite and potentially used as biological tags for fish stock assessment such as migration pattern and feeding habit.
Toxicity Test for Evaluating Food Safety of New Edible Seaweeds, Enteromorpha sp. and Laurencia sp. Isnansetyo, Alim; Istiqomah, Indah; Widaningroem, Retno; Triyanto, Triyanto; Safia, Rina Anggraeni; Yosita, Riesa; Helmiati, Senny
Jurnal Perikanan Universitas Gadjah Mada Vol 21, No 1 (2019)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (58.06 KB) | DOI: 10.22146/jfs.34103

Abstract

Seaweeds are potential foodstuff and source of bioactive substances that are very useful in the food and pharmaceutical industries. The objective of this study was to evaluate toxicity of aqueous extracts of seaweeds by Brine shrimp lethality test (BLT) and cytotoxicity test. The seaweeds used in this study were Enteromorpha sp. and Laurencia sp. collected from the Gunungkidul coastal line. The cytotoxicity test was performed against a normal cells line of Vero cells and a cancer cells line of HeLa cells. The cells lines were cultured in M119 medium with addition of 10% FBS and incubated at 37°C in CO2 incubator until confluent. Cells were harvested and cultured in 96 microplate with an initial density of 2x104 cells / 100 ml / well. The cells lines were treated with seaweed extracts at 24 hours after incubation. After additional 24 h incubation, the cell proliferation was observed by MTT method (3- [4,5 dimethylthiazol-2-yl] -2,5- diphenyltetrazolium bromide.The results showed that the two aqueous extract were not toxic in the BLT test, and did not exhibited any cytotoxicity activity against HeLa and Vero cells lines. Concentration-dependent cell proliferation was also not found. This results indicated that Enteromorpha sp. and Laurencia sp. extracts were not cytotoxic and might be consumed safely. These overall results suggested that the two seaweeds might be developed to be a new foodstuff for humans.