scholarly journals IDENTIFIKASI IKAN DI PELABUHAN PERIKANAN TANJUNG LUAR, PULAU LOMBOK, PROVINSI NUSA TENGGARA BARAT

2020 ◽  
Vol 13 (1) ◽  
pp. 30-38
Author(s):  
Slamet Mardiyanto Rahayu
Keyword(s):  
Chanos Chanos ◽  
Prionace Glauca ◽  
Carcharhinus Limbatus ◽  
Galeocerdo Cuvier ◽  
Siganus Canaliculatus ◽  
Carcharhinus Obscurus ◽  
Sillago Sihama ◽  
Euthynnus Affinis ◽  
Parastromateus Niger ◽  
Lepturacanthus Savala

Sumberdaya ikan adalah jenis ikan termasuk biota perairan laut lainnya yang merupakan sumber kekayaan alam yang memiliki daya pulih kembali secara alami, sehingga pemanfaatannya dapat dilakukan secara berkelanjutan. Pelabuhan perikanan merupakan tempat pendaratan hasil tangkapan dan awal pemasarannya. jenis ikan hasil tangkapan nelayan yang didaratkan di Pelabuhan Perikanan Pantai Tanjung Luar, Kabupaten Lombok Timur. Penelitian dilakukan dengan metode survey dan identifikasi. Berdasarkan penelitian diperoleh sebanyak 34 jenis ikan hasil tangkapan nelayan di Pelabuhan Perikanan Tanjung Luar, Pulau Lombok, yaitu: Naso brevisrostris, Chanos chanos, Parastromateus niger, Thallasoma purpureum, Siganus canaliculatus, Plectorhinchus polytaenia, Diodon holocanthus, Upeneus vittatus, Caesio cuning, Dermogenys sp, Epinephelus areolatus, Rastrelliger sp, Pomadasys argenteus, Lepturacanthus savala, Decapterus macrosoma, Sillago sihama, Eusphyra blochii, Carcharhinus brevipinna, Carcharhinus albimarginatus, Carcharhinus limbatus, Carcharhinus obscurus, Galeocerdo cuvier, Prionace glauca, Taeniura lymma, Priancanthus hamrur, Scolopsis sp, Scombermorus guttatus, Euthynnus affinis, Nemipterus japonicas, Sardinella sp, Lutjanus bitaeniatus, Secutor interruptus, Sphyraena jello, dan Caranx ignobilis

scholarly journals Using logbook data to determine the immediate mortality of blue sharks (Prionace glauca) and tiger sharks (Galeocerdo cuvier) caught in the commercial U.S. pelagic longline fishery

2016 ◽  
Vol 115 (1) ◽  
pp. 27-41 ◽  
Author(s):  
Derek R. Dapp ◽  
Charlie Huveneers ◽  
Terence I. Walker ◽  
John Mandelman ◽  
David W. Kerstetter ◽  
...  
Keyword(s):  
Longline Fishery ◽  
Prionace Glauca ◽  
Galeocerdo Cuvier ◽  
Pelagic Longline Fishery ◽  
Logbook Data ◽  
Pelagic Longline

A case study of the forensic application of DNA Barcoding to sharkfin identification in the Mexican Pacific

DNA Barcodes ◽  
2015 ◽  
Vol 3 (1) ◽  
Author(s):  
Héctor Espinosa ◽  
Christian Lambarri ◽  
Armando Martínez ◽  
Andrea Jiménez
Keyword(s):  
Dna Barcoding ◽  
Mitochondrial Gene ◽  
Forensic Application ◽  
Mexican Pacific ◽  
Prionace Glauca ◽  
Carcharhinus Limbatus ◽  
Mexican Government ◽  
Mustelus Henlei ◽  
Shark Finning

AbstractOne of the problems that arose from the meetings of the Barcode in Mexico project was the urgency of having a method in which Mexican authorities could trust for detecting shark finning. This study examined DNA barcoding as a method to identify 14 dried shark fins confiscated by the Mexican Government in two exportation shipments in Mazatlán and Manzanillo ports. Fins were DNA barcoded using the COI mitochondrial gene and provided matching sequences of six species: Prionace glauca, Carcharhinus falciformis, Carcharhinus limbatus, Alopias pelagicus, Mustelus henlei and Rhizoprionodon longurio. There is no information on DNA barcoding sharkfin trade in the Mexican Pacific and this is the first group effort with Mexican Government Agencies for the conservation of sharks.

scholarly journals KOMPOSISI JENIS HIU DAN DISTRIBUSI TITIK PENANGKAPANNYA DI PERAIRAN PESISIR CILACAP, JAWA TENGAH

2016 ◽  
Vol 5 (4) ◽  
pp. 242-248
Author(s):  
Sheila Puspa Arrum ◽  
Abdul Ghofar ◽  
Sri Redjeki
Keyword(s):  
Total Weight ◽  
Fishing Gear ◽  
Blue Shark ◽  
Prionace Glauca ◽  
Sphyrna Lewini ◽  
Purposive Sampling ◽  
Hammerhead Shark ◽  
Galeocerdo Cuvier ◽  
Scalloped Hammerhead ◽  
Isurus Oxyrinchus

ABSTRAK Ikan hiu merupakan predator tertinggi serta merupakan penjaga dan pembersih pada rantai makanan.Indonesia merupakan salah satu negara yang melakukan penangkapan hiu terbesar di dunia.Penangkapan hiu di Indonesia selama kurun waktu tahun 2000-2010 rata-rata sebesar 106.288 ton/tahun. Sebagai tindak lanjut dan menjaga keseimbangan ekosistem, maka diperlukan monitoring. Penelitian bertujuan untuk mengetahui komposisi jenis, produksi hasil tangkapan ikan hiu, serta titik koordinat penangkapan.Penelitian dilaksanakan pada bulan April-Mei 2016 di Pelabuhan Perikanan Samudera Cilacap, Jawa Tengah. Metode penelitian yang digunakan yaitu metode deskriptif dan pengambilan sampel dilakukan dengan cara purposive sampling. Dari hasil penelitian terdapat 9 jenis ikan hiu yang didaratkan yaitu Tikusan (Alopias pelagicus), Paitan (Alopias superciliosus), Lanjaman (Carcharinus falciformis), Selendang (Prionace glauca), Cakilan Air (Isurus paucus), Cakilan (Isurus oxyrinchus), Buas (Galeocerdo cuvier), Pasiran (Carcharhius plumbeus), dan Caping (Sphyrna lewini). Produksi terbanyak didominasi oleh jenis Paitan dengan jumlah produksi sebesar 11.257 kg. Selendang dan Tikusan total berat mencapai 6.625 kg dan 7.055 kg sedangkan Caping memiliki total berat 392 kg. Tren produksi tangkap temporal cenderung mengalami kenaikan dari tahun 2012-2015. Sebaran titik koordinat penangkapan berada pada kisaran lintang 7048’58,0” sampai 8005’42,9” dan bujur 109005’07,1” sampai 109045’03,5” untuk alat tangkap longline. Untuk alat tangkap gillnet berada pada kisaran koordinat lintang 7044’51,8” sampai 7049’09,0” dan bujur 109005’12,1” sampai 109011’20,4”. Daerah sebaran keseluruhan dari kedua jenis alat tangkap berada antara lintang 7049’27,0” sampai 8002’43,1” dan bujur 109007’06,4” sampai 109045’03,5” yang merupakan bagian dari perairan di bagian selatan Cilacap. Kata kunci: jenis hiu; distribusi titik penangkapan; perairan Cilacap. ABSTRACT Shark is the top predator that is guards and cleaners in the food chain. Indonesia is one of country that does highest shark fishing in the world. Shark fishing in Indonesia for the period 2000-2010 produced an average of 106.288 tonnes / year. As a follow up of this and maintain the balance of the ecosystem, it is necessary monitoring. The study was aimed to determine the species composition, production of shark catches, and the coordinates of the fish catching. The study was conducted in April-May 2016 at the Cilacap Oceans Fishing Port, Central Java. This research used descriptive method and sampling was done by a purposive sampling. There were 9 species of shark were landed, there are pelagic thresher (Alopias pelagicus), big-eyed thresher (Alopias superciliosus), silky shark (Carcharinus falciformis), blue shark (Prionace glauca), longfin mako (Isurus paucus), shortfin mako (Isurus oxyrinchus), tiger shark (Galeocerdo cuvier), sandbar shark (Carcharhius plumbeus), and scalloped hammerhead shark (Sphyrna lewini). The highest production was big-eyed thresher with total production of 11.257 kg. Blue shark and pelagic thresher total weight reached 6.625 kg and 7.055 kg, while the scalloped hammerhead shark has a total weight of 392 kg. Temporally capture production trends tended to increase from year 2012 to 2015. Distribution of fishing coordinate point was in the range of latitude 7048'58,0"until 8005'42,9" and the longitude 109005'07,1"until 109045'03,5" for longline fishing gear. For gillnet fishing gear was in the range of latitude 7044'51,8"until 7049'09,0" and longitude 109005'12,1"until 109011'20,4". Overall distribution of both types of fishing gear were between latitude 7049'27,0"until 8002'43,1" and longitude 109007'06,4"until 109045'03,5" which is part of the southern part of Cilacap  waters.  Keywords :Shark species; catch distribution; Cilacap waters. 

scholarly journals Ecological importance of sharks and rays in a structural foodweb analysis in southern Brazil

2014 ◽  
Vol 71 (7) ◽  
pp. 1586-1592 ◽  
Author(s):  
Hugo Bornatowski ◽  
Andrés Felipe Navia ◽  
Raul Rennó Braga ◽  
Vinícius Abilhoa ◽  
Marco Fábio Maia Corrêa
Keyword(s):  
Fishery Management ◽  
Southern Brazil ◽  
Ecosystem Integrity ◽  
Sphyrna Lewini ◽  
Galeocerdo Cuvier ◽  
Carcharhinus Obscurus ◽  
Trophic Network ◽  
Ecological Importance ◽  
Large Predators ◽  
The Impact

Abstract Understanding the trophic interactions and the position of species within a foodweb is crucial if we want to understand the dynamics of marine communities and the impact individual components of the community have on trophic network compartments. Recent studies have indicated sharks and rays are important elements within foodwebs. In this study, we evaluated the ecological importance of sharks and rays in a subtropical ecosystem off the coast of southern Brazil by using topological analyses. We tested the hypotheses that some elasmobranchs can be considered key elements within the foodweb, and that large predators have topological importance (act as keystones), so that, when large predators are excluded, mesopredator elasmobranchs occupy higher topological positions. Our results indicate that Galeocerdo cuvier, Carcharhinus obscurus, Carcharias taurus, Sphyrna lewini and S. zygaena are species with large ecological function values and may exert a powerful influence over lower levels. These issues need to be considered by conservation and fishery management groups since it appears that ecosystem integrity may be compromised by reductions in the populations of large predators. Carcharhinus obscurus, S. zygaena and Zapteryx brevirostris were found to be the elasmobranchs with largest values of centrality, and can, therefore, be considered key elements in the topological structure.

scholarly journals Behavioural responses to fisheries capture among sharks caught using experimental fishery gear

2017 ◽  
Vol 74 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Austin J. Gallagher ◽  
Erica R. Staaterman ◽  
Steven J. Cooke ◽  
Neil Hammerschlag
Keyword(s):  
Stress Responses ◽  
Strong Correlation ◽  
Fishing Gear ◽  
Plasma Lactate ◽  
Maximum Acceleration ◽  
Carcharhinus Limbatus ◽  
Behavioural Responses ◽  
Catch And Release ◽  
Galeocerdo Cuvier ◽  
Fighting Behaviour

The response to capture is important in fisheries because it can reveal potential threats to species beyond fishing mortalities resulting from direct harvest. To date, the vast majority of studies assessing shark stress responses have used physiology or biotelemetry to look at sensitivity after capture, leaving a gap in our understanding of the behaviours of sharks during capture. We examined the behavioural responses of sharks to capture by attaching accelerometers to fishing gear and measuring the immediate and prolonged forces they exerted while on the line. We recorded acceleration vectors and derived the rate of intense fighting behaviours of 23 individual sharks comprising three species. Results suggest that blacktip sharks (Carcharhinus limbatus) exhibited intense bouts of fighting behaviour at the onset of hooking, while nurse (Ginglymostoma cirratum) and tiger sharks (Galeocerdo cuvier) displayed more subdued acceleration values during capture. We also obtained plasma lactate from a subset of individuals and detected a strong correlation with maximum acceleration. These results align with previously published values and suggest that shark movement during fisheries capture is an important factor during bycatch and catch-and-release interactions.

scholarly journals KOMUNITAS IKAN PADA EKOSISTEM PADANG LAMUN DAN TERUMBU KARANG DI PULAU SIBU KECAMATAN OBA UTARA KOTA TIDORE KEPULAUAN

2018 ◽  
Vol 3 (2) ◽  
pp. 197-210 ◽  
Author(s):  
Rina Rina ◽  
Salim Abubakar ◽  
Nebuchadnezzar Akbar
Keyword(s):  
Mesh Size ◽  
Siganus Canaliculatus ◽  
Sillago Sihama

Penelitian bertujuan untuk melihat komposisi jenis dan indeks ekologi ikan pada ekosistem lamun dan terumbu karang di Pulau Sibu Kecamatan Oba Utara. Proses penangkapan ikan baik pada ekosistem padang lamun maupun terumbu karang menggunakan jaring insang dengan panjang 50 meter dan lebar 2 meter dan ukuran mesh size 2,5 inchi. Komposisi jenis hasil tangkapan pada ekosistem terumbu karang sebanyak 16 spesies yaitu Tylosurus crocodiles, Cheilio inermis, Gerres oyena, Choerodon robustus, Parupeneus berbirinus,  Sillago sihama, Hermigymnus melapterus, Lethrinus erythropterus, Lutjanus decussates, Lutjanus fulvilamma, Lutjanus bengalensis,  Siganus canaliculatus, Siganus chrysospilos, Caranx melampygus, Selar boops dan Cephalopholis microprion. Sedangkan pada ekosistem padang lamun sebanyak 13 spesies yaitu Myripristis burndti, Tylosorus strongylurus, Caranx melampygus, Siganus canaliculatus, Siganus chrysospilos, Sillago sihama, Lutjanus ehrenbergii, Lutjanus decussates, Lutjanus fulvilamma, Monotaxis granduculis, Parachaetodon ocellatus, Hermigymnus melapterus dan Sphyraena jello. Keanekaragaman jenis ikan baik pada ekosistem terumbu karang maupun padang lamun tergolong sedang, tidak ada jenis yang mendominasi serta penyebaran jenisnya sangat merata. Hasil tangkapan jenis ikan antara ekosistem terumbu karang dan padang lamun memiliki kemiripan. Kata Kunci : Ikan, lamun, terumbu karang

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