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Penetapan Strategi Pengelolaan Penangkapan Berdasarkan Studi Distribusi Spasial Dan Temporal Ukuran Rajungan Betina Yang Mengerami Telur Muh Saleh Nurdin; Teuku Fadlon Haser; Fauziah Azmi; Nurhasanah
Jurnal Ilmiah Samudra Akuatika Vol 3 No 2 (2019): Jurnal Ilmiah Samudra Akuatika
Publisher : Fakultas Pertanian Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (461.022 KB)

Informasi distribusi spasio-temporal ukuran rajungan betina yang mengerami telur (BEF) masih sangat terbatas. Penelitian ini bertujuan untuk menganalisis dan membandingkan ukuran lebar karapas rajungan BEF pada ekosistem estuaria dan laut di Pulau Salemo. Penelitian dilaksanakan pada bulan Maret – Juli 2015 pada dua lokasi yaitu estuaria (mangrove) dan laut (lamun dan terumbu karang) pada setiap fase bulan terang dan gelap. Analisis data menggunakan statistik deskriptif dan uji-t. Hasil analisis data menunjukkan terdapat perbedaan signifikan lebar karapas rajungan BEF yang tertangkap secara spasial tapi tidak secara temporal. Rajungan BEF melakukan pelepasan telur di laut dan daerah ini juga dijadikan sebagai daerah penangkapan utama oleh nelayan, sehingga diperlukan strategi pengelolaan dengan mengimplementasikan kawasan larangan penangkapan pada daerah pelepasan untuk mempertahankan populasi dan stok.

EFFECTS OF ANTHROPOGENIC ACTIVITY ON STREAM WATER QUALITY IN LANGSA, ACEH Helmy Akbar; Iwan Suyatna; Jailani Jailani; Singgih Afifa Putra; Fauziah Azmi
Jurnal Biologi Tropis Vol. 18 No. 2 (2018): Juli - Desember
Publisher : Universitas Mataram

Increased human activity towards the water bodies will change the condition of water quality. Case study in Langsa, Aceh, It was found that an increase in Some physical parameter (TSS) that exceeds the value determined in PP 82 of 2001 (Indonesian government standard). The high value of TSS in Station 2 and Station 3 indicates that the sediment loading to the water body is high, especially in Station 3, where the TSS concentrations far exceed the standard. Activity of type C surface mining materials tends to affect the brightness, turbidity, depth and TSS. Water conditions with low pH were also found in this study. In location studied no EPT larvae were foundÃÂ Keyword: Langsa, Water Quality, Stream, Total Suspended Solid, Anthropogenic Activity

OPTIMIZING EMBRYONIC DEVELOPMENT, EGG HATCHABILITY, AND LARVAL SURVIVAL OF ASIAN SEABASS, Lates calcarifer USING PAPAYA LEAF EXTRACT (Carica papaya) TREATMENTS Teuku Fadlon Haser; Fauziah Azmi; Muh Saleh Nurdin; Suri Purnama Febri; Tri Heru Prihadi; Joel Aubin; Bahtiar Sah Putra; Riris Yuli Valentine; Deni Radona; Kurniawan Kurniawan; Muhammad Haritza Laitte
Indonesian Aquaculture Journal Vol 17, No 1 (2022): (June, 2022)
Publisher : Center for Fisheries Research, Agency for Marine and Fisheries Research and Human Resource

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/iaj.17.1.2022.29-36

Embryonic development of Asian seabass, Lates calcarifer is a critical phase in the success of larval rearing production in a hatchery. Low production of larvae has been the drawback of the Asian seabass aquaculture owing to diseases and microbial infection to the eggs, causing low egg viability. This study aims to evaluate the effect of different doses of papaya leaf extracts during embryonic development to improve egg hatchability and larval survival. Six different doses of papaya leaf extracts of 2, 4, 6, 10, 20, and 25 mL were used as treatments arranged triplicates in five liter aquaria. The newly fertilized eggs (99 eggs) were immersed in each treatment for five minutes and fifteen seconds. Subsequently, the eggs were moved into 10 L incubation tanks, and samples were collected for embryogenesis observation. The hatchability of eggs was significantly different among treatments. The hatchability of larvae in group with dose of 4 mL was the best treatment (93.94 ± 0.1%) followed by 2 mL (93.88 ± 3%), and 6 mL (90.91 ± 3.0%). The different doses of papaya leaf extract significantly affected larval survival. The highest survival rate of larvae was 2 mL (93%) followed by 4 mL (90%) and 6 mL (70%). There was no significant difference in the hatching time of larvae. The fastest hatching time occurred at the dose of 6 mL about 13 hours and 30 minutes, followed by 2 mL and 4 mL treatment for about 14 hours. This study recommends that the doses of 2 mL or 4 mL of papaya leaf extracts have potential impacts on the improvement of larval rearing production for Asian seabass hatchery.

Biological Aspect of the Grey-eel catfish in Kuala Langsa Estuaries, Aceh Teuku Fadlon Haser; Muh Saleh Nurdin; Fauziah Azmi; Muhammad Fauzan Isma; Suri Purnama Febri; Eddy Supriyono; Siska Mellisa
Depik Vol 11, No 2 (2022): August 2022
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

The grey-eel catfish is a highly valued fish species in some parts of Indonesia. The fish is common in brackish water of estuaries, marine and freshwater habitat. They are not are not usually catched in commercial scale because of the limited population in its habitat. Although the status is not evaluated, the fish is predicted facing extinction in several countries. We conducted a study to examine the biological information and reproductive biology of the fish in Kota Langsa to gather information that can be utilize to evaluate reproductive status of the fish in several habitats. Parameters tested in the study includes sex ratio, length-weight relationships, candition factor, size at first maturity fecundity and reproductive potential of the fish. Research results provide information that the fish follows negative allometric model with constant condition factor throughout the study. The catches were relatively young fish which have not reached maturity stage. Fishes in the class sized at 510-550 mm provide the largest contribution to total eggs production. To ensure sustainability of the fish it is advised that the fish must catched at size larger than 550 mm.

Biological Aspect of the Grey-eel catfish in Kuala Langsa Estuaries, Aceh Teuku Fadlon Haser; Muh Saleh Nurdin; Fauziah Azmi; Muhammad Fauzan Isma; Suri Purnama Febri; Eddy Supriyono; Siska Mellisa
Depik Vol 11, No 2 (2022): August 2022
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.11.2.23498

The grey-eel catfish is a highly valued fish species in some parts of Indonesia. The fish is common in brackish water of estuaries, marine and freshwater habitat. They are not are not usually catched in commercial scale because of the limited population in its habitat. Although the status is not evaluated, the fish is predicted facing extinction in several countries. We conducted a study to examine the biological information and reproductive biology of the fish in Kota Langsa to gather information that can be utilize to evaluate reproductive status of the fish in several habitats. Parameters tested in the study includes sex ratio, length-weight relationships, candition factor, size at first maturity fecundity and reproductive potential of the fish. Research results provide information that the fish follows negative allometric model with constant condition factor throughout the study. The catches were relatively young fish which have not reached maturity stage. Fishes in the class sized at 510-550 mm provide the largest contribution to total eggs production. To ensure sustainability of the fish it is advised that the fish must catched at size larger than 550 mm.

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