Fisheries and Biological Aspects of Dusky Shark Carcharhinus obscurus (Lesueur, 1818) in Muncar Fishing Port, Banyuwangi, Indonesia

Ahmad IRSAN, (Department of Biology, Faculty of Science and Technology, Universitas Islam Negeri Syarif Hidayatullah, Jl. Ir H. Juanda No. 95, Tangerang Selatan, Banten, Indonesia)
Fahma WIJAYANTI, (Department of Biology, Faculty of Science and Technology, Universitas Islam Negeri Syarif Hidayatullah, Jl. Ir H. Juanda No. 95, Tangerang Selatan, Banten, Indonesia)
Yayan Mardiansyah ASSUYUTI, (Laboratory of Ecology, Center for Integrated Laboratory, Universitas Islam Negeri Syarif Hidayatullah, Jl. Ir H. Juanda No. 95, Tangerang Selatan, Banten, Indonesia)
Ranny Ramadhani YUNENI (WWF Indonesia, Graha Simatupang Tower 2 Unit C Lt 7th-11th, Jl. TB Simatupang, Jakarta)
Acta Aquatica Turcica
2 0
Yıl: 2021 Cilt: 17 Sayı: 4 Sayfa Aralığı: 463 - 473 Metin Dili: İngilizce DOI: 10.22392/actaquatr.812 İndeks Tarihi: 26-01-2022

Fisheries and Biological Aspects of Dusky Shark Carcharhinus obscurus (Lesueur, 1818) in Muncar Fishing Port, Banyuwangi, Indonesia

Öz:
The high of catching intensity or overfishing of dusky whaler shark, Carcharhinus obscurus (Lesueur, 1818), has threatened its sustainability. Even though fisheries and biological aspects of C. obscurus are important as a basic assessment for making regulation of shark fisheries management. However, those studies never been reported in Indonesia. The aim of this study is to identify the number of catches and biological aspects of C. obscurus. This study was conducted from January to March 2018 at Fishery Port Technical Implementation Unit (FP-TIU) Muncar, Banyuwangi, Indonesia. 54 C. obscurus individuals were obtained using random sampling survey method. Here, we found that the number of C. obscurus landed in 2018 was higher compared to 2014 and 2017. The shark length ranged from 172 to 394 cm. Percentages of male and female adults of C. obscurus were 22.22 and 46.30%, respectively. Whilst in the juveniles were 20.37% males and 11.11% females. The maturity rate based on clasper length, male landed sharks was 82.61% classified within full calcification and 17.39% non-full calcification level. The sex ratio of C. obscurus sharks that are landed was 1:1.34 (M: F).
Anahtar Kelime:

Muncar Balıkçı Limanı, Banyuwangi, Endonezya'daki Gölgeli Köpek Balığının Carcharhinus obscurus'un (Lesueur, 1818) Biyolojik Özellikleri ve Balıkçılık Açısından Değerlendirilmesi

Öz:
Gölgeli köpekbalığı Carcharhinus obscurus'un (Lesueur, 1818) yüksek yakalama yoğunluğu veya aşırı avlanması, sürdürülebilirliğini tehdit etmektedir. C. obscurus'un balıkçılık ve biyolojik yönlerinin bilinmesi, köpek balığı balıkçılığı yönetiminin düzenlenmesinde temel teşkil etmektedir. Ancak, bu çalışmalar şimdiye kadar Endonezya'da hiç rapor edilmemiştir. Bu çalışmanın amacı, C. obscurus'un avlanma sayısını ve biyolojik yönlerini belirlemektir. Bu çalışma OcakMart 2018 tarihleri arasında Endonezya, Banyuwangi, Muncar'da Balıkçılık Limanı Teknik Uygulama Birimi (FP-TIU) gerçekleştirilmiştir. Rastgele örnekleme yöntemi kullanılarak toplam 54 C. obscurus bireyi elde edilmiştir. 2018 yılında C. obscurus sayısının 2014 ve 2017 yıllarına göre daha fazla olduğu tespit edilmiştir. Yakalanan köpekbalıklarının boyu 172 ile 394 cm arasında değişmektedir. C. obscurus'un erkek ve dişi erişkinlerinin yüzdeleri sırasıyla %22,22 ve %46,30 olarak belirlenmiştir. Gençlerde ise %20,37 erkek ve %11,11 dişi idi. Klape uzunluğuna göre olgunluk oranı, karaya çıkan erkek köpekbalıkları %82,61 tam kalsifikasyon ve %17,39 tam olmayan kalsifikasyon düzeyinde sınıflandırılmıştır. Karaya çıkan C. obscurus köpekbalıklarının cinsiyet oranı 1:1.34 (E:D) olarak belirlenmiştir.
Anahtar Kelime:

Belge Türü: Makale Makale Türü: Araştırma Makalesi Erişim Türü: Erişime Açık
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APA Irsan A, Wijayanti F, Mardiansyah Assuyuti Y, Yuneni R (2021). Fisheries and Biological Aspects of Dusky Shark Carcharhinus obscurus (Lesueur, 1818) in Muncar Fishing Port, Banyuwangi, Indonesia. , 463 - 473. 10.22392/actaquatr.812
Chicago Irsan Ahmad,Wijayanti Fahma,Mardiansyah Assuyuti Yayan,Yuneni Ranny Fisheries and Biological Aspects of Dusky Shark Carcharhinus obscurus (Lesueur, 1818) in Muncar Fishing Port, Banyuwangi, Indonesia. (2021): 463 - 473. 10.22392/actaquatr.812
MLA Irsan Ahmad,Wijayanti Fahma,Mardiansyah Assuyuti Yayan,Yuneni Ranny Fisheries and Biological Aspects of Dusky Shark Carcharhinus obscurus (Lesueur, 1818) in Muncar Fishing Port, Banyuwangi, Indonesia. , 2021, ss.463 - 473. 10.22392/actaquatr.812
AMA Irsan A,Wijayanti F,Mardiansyah Assuyuti Y,Yuneni R Fisheries and Biological Aspects of Dusky Shark Carcharhinus obscurus (Lesueur, 1818) in Muncar Fishing Port, Banyuwangi, Indonesia. . 2021; 463 - 473. 10.22392/actaquatr.812
Vancouver Irsan A,Wijayanti F,Mardiansyah Assuyuti Y,Yuneni R Fisheries and Biological Aspects of Dusky Shark Carcharhinus obscurus (Lesueur, 1818) in Muncar Fishing Port, Banyuwangi, Indonesia. . 2021; 463 - 473. 10.22392/actaquatr.812
IEEE Irsan A,Wijayanti F,Mardiansyah Assuyuti Y,Yuneni R "Fisheries and Biological Aspects of Dusky Shark Carcharhinus obscurus (Lesueur, 1818) in Muncar Fishing Port, Banyuwangi, Indonesia." , ss.463 - 473, 2021. 10.22392/actaquatr.812
ISNAD Irsan, Ahmad vd. "Fisheries and Biological Aspects of Dusky Shark Carcharhinus obscurus (Lesueur, 1818) in Muncar Fishing Port, Banyuwangi, Indonesia". (2021), 463-473. https://doi.org/10.22392/actaquatr.812
APA Irsan A, Wijayanti F, Mardiansyah Assuyuti Y, Yuneni R (2021). Fisheries and Biological Aspects of Dusky Shark Carcharhinus obscurus (Lesueur, 1818) in Muncar Fishing Port, Banyuwangi, Indonesia. Acta Aquatica Turcica, 17(4), 463 - 473. 10.22392/actaquatr.812
Chicago Irsan Ahmad,Wijayanti Fahma,Mardiansyah Assuyuti Yayan,Yuneni Ranny Fisheries and Biological Aspects of Dusky Shark Carcharhinus obscurus (Lesueur, 1818) in Muncar Fishing Port, Banyuwangi, Indonesia. Acta Aquatica Turcica 17, no.4 (2021): 463 - 473. 10.22392/actaquatr.812
MLA Irsan Ahmad,Wijayanti Fahma,Mardiansyah Assuyuti Yayan,Yuneni Ranny Fisheries and Biological Aspects of Dusky Shark Carcharhinus obscurus (Lesueur, 1818) in Muncar Fishing Port, Banyuwangi, Indonesia. Acta Aquatica Turcica, vol.17, no.4, 2021, ss.463 - 473. 10.22392/actaquatr.812
AMA Irsan A,Wijayanti F,Mardiansyah Assuyuti Y,Yuneni R Fisheries and Biological Aspects of Dusky Shark Carcharhinus obscurus (Lesueur, 1818) in Muncar Fishing Port, Banyuwangi, Indonesia. Acta Aquatica Turcica. 2021; 17(4): 463 - 473. 10.22392/actaquatr.812
Vancouver Irsan A,Wijayanti F,Mardiansyah Assuyuti Y,Yuneni R Fisheries and Biological Aspects of Dusky Shark Carcharhinus obscurus (Lesueur, 1818) in Muncar Fishing Port, Banyuwangi, Indonesia. Acta Aquatica Turcica. 2021; 17(4): 463 - 473. 10.22392/actaquatr.812
IEEE Irsan A,Wijayanti F,Mardiansyah Assuyuti Y,Yuneni R "Fisheries and Biological Aspects of Dusky Shark Carcharhinus obscurus (Lesueur, 1818) in Muncar Fishing Port, Banyuwangi, Indonesia." Acta Aquatica Turcica, 17, ss.463 - 473, 2021. 10.22392/actaquatr.812
ISNAD Irsan, Ahmad vd. "Fisheries and Biological Aspects of Dusky Shark Carcharhinus obscurus (Lesueur, 1818) in Muncar Fishing Port, Banyuwangi, Indonesia". Acta Aquatica Turcica 17/4 (2021), 463-473. https://doi.org/10.22392/actaquatr.812
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17-04-2024 23:7

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