SavedAdd your journal

Journals / Journal of Anatolian Environmental and Animal Sciences / 2021 / Cilt: 6 Sayı: 3

Distribution and Fishery of the Invasive Blue Crab (Callinectes sapidus) in Turkey Based on Local Ecological Knowledge of Fishers

Balıkçıların Lokal Ekolojik Bilgilerine Göre İstilacı Mavi Yengecin (Callinectes sapidus) Türkiye’deki Dağılımı ve Balıkçılığı

Fikret ÖNDES
Gökhan GÖKÇE
Pages
325–332
Publication Date
2021-09-28
DOI
—
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Results indicated that C. sapidus is commonly distributed along the Levantine and Southern Aegean coasts of Turkey, whilst it is rarely observed in the Sea of Marmara and the Black Sea.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:This study provides information on the distribution and ecology of Callinectes sapidus in Turkey, as well as its maximum daily catch in set nets (trammel nets and gillnets), and its commercial fishery in lagoons.
📊
Key Findings & Data:Data were collected in 2020 by utilizing a telephone based questionnaire survey.
💡
Conclusion & Impact:Results indicated that C. sapidus is commonly distributed along the Levantine and Southern Aegean coasts of Turkey, whilst it is rarely observed in the Sea of Marmara and the Black Sea.
🔬Design:Survey & Empirical Study
📍Scope:2020 Verileri
⚙️Variables:dalyan balıkçılığı · denizel istila · istilacı türler

Abstract

This study provides information on the distribution and ecology of Callinectes sapidus in Turkey, as well as its maximum daily catch in set nets (trammel nets and gillnets), and its commercial fishery in lagoons. Data were collected in 2020 by utilizing a telephone based questionnaire survey. Responses were gathered from fishers (n = 6) who fish in the lagoons and the head of fishery cooperatives or its members (n = 104) in 28 cities, including the coastal regions of the Mediterranean Sea (Levantine), Aegean Sea, Sea of Marmara and the Black Sea in Turkey. Results indicated that C. sapidus is commonly distributed along the Levantine and Southern Aegean coasts of Turkey, whilst it is rarely observed in the Sea of Marmara and the Black Sea. It has been reported by fishers that this species has been seen in the Black Sea for the last decade. The maximum daily catch of blue crab in set nets showed a significant difference in the Levantine and Aegean coasts. The species is mainly produced in the lagoons, whereas many coastal fishers returned it as discard and 79% of fishers emphasized that C. sapidus shred the nets and caused an economic loss. Ovigerous females have been observed between March and October and we have discussed related management issues including current fishery season.

Özet

Bu çalışma, Callinectes sapidus’un Türkiye’deki dağılımı, ekolojisi, uzatma ağlarındaki (fanyalı ve sade ağlar) günlük maksimum avı ve dalyanlardaki ticari balıkçılığı hakkında bilgi sağlamaktadır. Veriler, 2020 yılında yapılan telefon anketleri ile toplanmıştır. Dalyanlarda balıkçılık yapan 6 balıkçı ve Türkiye’nin Akdeniz, Ege, Marmara ve Karadeniz kıyılarını kapsayan toplam 28 ildeki su ürünleri kooperatifi başkanları ya da kooperatif üyeleri (örneklem sayısı = 104) anketleri cevaplamıştır. Bulgular, C. sapidus türünün Türkiye’nin Akdeniz ve Güney Ege kıyılarında yaygın olduğunu, Marmara ve Karadeniz kıyılarında ise nadiren gözlemlendiğini göstermiştir. Bu türün Karadeniz’de son 10 yıldır görüldüğü balıkçılar tarafından rapor edilmiştir. Uzatma ağlarındaki günlük maksimum yengeç avı Akdeniz ve Ege Denizi’nde anlamlı fark göstermiştir. Çoğu kıyı balıkçısı (%79), C. sapidus türünün ağları parçaladığını ve ekonomik kayba neden olduğunu belirtmiştir. Yumurtalı yengeçler Mart ve Ekim ayları arasında gözlemlenmiş olup, mevcut balıkçılık sezonu dâhil olmak üzere yönetim ile ilgili konular değerlendirilmiştir.

🔖

Cite This Article

ÖNDES, F., GÖKÇE, G. (2021). Distribution and Fishery of the Invasive Blue Crab (Callinectes sapidus) in Turkey Based on Local Ecological Knowledge of Fishers. Journal of Anatolian Environmental and Animal Sciences, Cilt: 6 Sayı: 3, 325–332. https://ajindex.com/articles/907625

📄 Full Text PDF Viewer

📄

PDF görüntüleyici hazırlanıyor...

References (5)

  1. Anderson, J. A. & Alford, A. B. (2014). Ghost fishing activity in derelict blue crab traps in Louisiana. Marine Pollution Bulletin, 79, 261-267. DOI: 10.1016/j.marpolbul.2013.12.002 Anon. (2020a). 5/1 Numarali ticari amaçli su ürünleri avciliğinin düzenlenmesi hakkinda tebliğ (tebliğ no: 2020/20) [Communiqué on the regulation of commercial fisheries No. 5/1 (Communiqué No. 2020/20).] [In Turkish.] Anon. (2020b). 5/2 Numarali amatör amaçli su ürünleri avciliğinin düzenlenmesi hakkinda tebliğ (tebliğ no: 2020/21) [Communiqué on the regulation of recreational fisheries No. 5/2 (Communiqué No. 2020/21).] [In Turkish.] Artüz, I. (1990). Mavi yengecin serüvenleri. Cumhuriyet Bilim Teknik, 148, 6. Atar, H. H., Ölmez, M., Bekcan, S. & Seçer, S. (2002). Comparison of three different traps for catching blue crab (Callinectes sapidus Rathbun 1896) in Beymelek Lagoon. Turkish Journal of Veterinary and Animal Sciences, 26, 1145-1150.
  2. Aydın, M. (2017). First record of Blue Crab Callinectes sapidus (Rathbun 1896) from the Middle Black Sea Coast. Turkish Journal of Maritime and Marine Sciences, 3(2). Belgrad, B. A. & Griffen, B. D. (2016). The influence of diet composition on fitness of the blue crab, Callinectes sapidus. PloS one, 11(1), e0145481. Bembe, S., Liang, D. & Chung, J. S. (2017). Optimal temperature and photoperiod for the spawning of blue crab, Callinectes sapidus, in captivity. Aquaculture Research, 48, 5498-5505.
  3. Bilgin, S. (2019). Review: An Update List of Crab Species (Crustacea: Decapoda: Brachyura) with Exotic Crabs in the Black Sea Fauna. Anatolian Env. and Anim. Sciences, 4, 211-215.
  4. Bulgurkov, K. (1968). Callinectes sapidus Rathbum (Crustacea-Decapoda) in the Black Sea. Izvnauchnoizsl Inst Rib Stop Okeanogr, 9, 33-36.
  5. Carver, A. M. (2001). Selective fishing pressure on large male blue crabs negatively affects male size, sex ratio, and population reproductive potential in the upper Chesapeake Bay. M.S. Thesis. Department of Marine, Earth and Atmospheric Sciences, North Carolina State University, Raleigh. 38 p. Cerri, J., Chiesa, S., Bolognini, L., Mancinelli, G., Grati, F., Dragičević, B.,. & Azzurro, E. (2020). Using online questionnaires to assess marine bio-invasions: A demonstration with recreational fishers and the Atlantic blue crab Callinectes sapidus (Rathbun, 1986) along three Mediterranean countries. Marine Pollution Bulletin, 156, 111209. Ceylan, Y. (2020). The Blue Crab (Callinectes sapidus, Rathbun, 1896) Is Spreading in the Southern C