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Abundance and stock management of whiting (Merlangius merlangus) in Southeastern Black Sea fisheries

Yıl 2025, Cilt: 10 Sayı: 3, 267 - 276, 30.05.2025

Erhan Çiloğlu , Cemalettin Şahin

https://doi.org/10.35229/jaes.1628391

Öz

In this study, 1.579 Merlangius merlangus were sampled from commercial trawl fisheries in the Eastern Black Sea. The collected samples' growth, recruitment, and stock structure were evaluated using the ELEFAN-I, Y/R, B/R, VPA, and Thompson and Bell models in the FISAT-II software package. The von Bertalanffy growth parameters, including asymptotic length (L∞), growth constant (K), and t0, were calculated as 40.89 cm, 0.10 cm, and -1.1411 cm, respectively. The first catch length (Lc50) varied between 11.82 cm and 13.40 cm. Total, natural, and fishing mortality rates were estimated at 0.85, 0.29, and 0.56, respectively. Three distinct recruitment periods were identified, occurring in March, August, and November. Based on VPA data, the fixed biomass was estimated at approximately 569,620.7 tonnes. The analysis suggests that the maximum sustainable yield (MSY) for whiting could be reached with an exploitation rate of 0.66. At the current exploitation level, calculated at 449.70 tonnes using the Thompson and Bell method with an F-factor of 0.56, the biomass has decreased. An F-factor of 1.0, representing the MSY, corresponds to 498.180 tonnes. At the current fishing rate (F = 0.56), the biomass has been reduced by 25% (168,026 tonnes) from its unfished state of 666,206 metric tonnes.

Anahtar Kelimeler

Eastern Black Sea, maximum sustainable yield (MSY), recruitment, relative yield per recruit (Y'/R), relative yield per biomass (B'/R), stock, whiting.

Kaynakça

  • Aksu, H. (2020). Estimation of growth parameters using length frequency data of whiting (Merlangius merlangus euxinus, Nordmann 1840), from black sea coasts of Turkey. Journal of New Results in Science, 9(2), 39-45. Anonymous. (2023) https://www.mgm.gov.tr/FILES/resmi- istatistikler/denizSuyu/2024-Karadeniz.pdf [14.10.2023]
  • Arkhipov, G., & Rovnina, O.A. (1990). Coll. papers vses. nauchno-issled. Inst. morsk. Rybn. Khoz. Oceanogr., 64-80 (in Russian)
  • Avşar, D. (2005). Balıkçılık biyolojisi ve popülasyon dinamiği. Nobel. Yayınevi, 289 s.
  • Avşar, D. (1998). Balıkçılık biyolojisi ve populasyon dinamiği. Çukurova Üniversitesi, Su Ürünleri Fakültesi, Ders Kitapları No:5, Adana, 303 s
  • Aydın, M., & Hacıoğlu, M.N. (2017). Trabzon Bölgesi’nde kullanılan mezgit uzatma ağlarının av verimi ve tür kompozisyonunun belirlenmesi. Ordu Üniversitesi Bilim ve Teknoloji Dergisi, 7(2), 226-238.
  • Barrios, A., Ernande, B., Mahé, K., Trenkel, V., & Rochet, M.J. (2017). Utility of mixed effects models to inform the stock structure of whiting in the Northeast Atlantic ocean. Fisheries Research, 190, 132-139. DOI: 10.1016/j.fishres.2017.02.005
  • Bat, L., Erdem, Y., Ustaoğlu, S., Yardım., Ö. & Satılmış, H.H. (2005). A study on the fishes of the central Black Sea coast of Turkey. Journal of the Black Sea/Mediterranean Environment 11, 281-296.
  • Bradova, N., & Prodanov, K. (2003). Growth rate of the whiting (Merlangius merlangus euxinus) from the western part of black sea. In Bulgarian academy of sciences (Vol. 4, pp. 157-164).
  • Beverton, R.J.H., & Holt, S.J. (1966). Manual of method for fish stock assessment Part 2. Tables of yield functions. FAO Fish. Tech. Pap.38 (Rev.1): 67p.
  • BSGM. (2024). 6/1 Numaralı Ticari Amaçlı Su Ürünleri Avcılığının Düzenlenmesi Hakkında Tebliğ https://www.resmigazete.gov.tr/eskiler/2024/08/ 20240811-3.htm [09.09.2024] BSGM. (2023). https://www.tarimorman.gov.tr/BSGM/Belgeler/ Icerikler/Su%20%C3%9Cr%C3%BCnleri%20V eri%20ve%20D%C3%B6k%C3%BCmanlar%C4 %B1/Bsgm-istatistik.pdf [14.10.2023]
  • Bilgin, S., Bal, H., & Taşçı, B. (2012). Length-based growth estimates and reproduction biology of whiting, Merlangius merlangus euxinus (Nordman, 1840) in the Southeast Black Sea. Turkish Journal of Fisheries and Aquatic Sciences, 12(4), 871-881. DOI: 10.4194/1303- 2712-v12_4_15
  • Cardinale, M., & Osio, G.C. (2013). Status of Mediterranean and black sea resources in European Waters in 2013. Results for stocks in GSA 1–29 (Mediterranean and Black Sea). DOI: 10.1016/j.marpolbul.2024.116200
  • Çiloğlu, E., Şahin, C., Zengin, M., & Genç, Y. (2001). Doğu Karadeniz, Trabzon-Yomra sahillerinde mezgit (Merlangius merlangus euxinus Nordmann, 1840) balığının bazı populasyon parametreleri ve üreme döneminin tespiti. Turkish Journal of Veterinary and Animal Sciences, 25(6), 831-837.
  • Erdem, Ü., Cebeci, M., & Yerli, B. (2006). Marmara denizi mezgit (Merlangius merlangus euxinus Nordmann, 1840) balığının bazı biyolojik özellikleri. Ege Journal of Fisheries and Aquatic Sciences, 23(1), 33-37.
  • FAO. (2022). The State Of World Fisheries and Aquaculture. https://www.fao.org/3/cc0461en/cc0461en.pdf
  • FAO. (2005). Agriculture organization of the United Nations, Marine Resources Service, Review of the state of world marine fishery resources (No. 457). Food & Agriculture Org.
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  • Gönener, S., & Özdemir, S. (2013). Karadeniz’de (Sinop- İnceburun) dip trolü ile avlanabilir balıkların stok büyüklükleri ve biyokütle değişimleri. Journal of FisheriesSciences. com, 7(2), 125.
  • Gönener, S., & Bilgin, S. (2010). Karadeniz’de (Sinop- İnceburun) ticari dip trolü ile avlanabilir balık biyokütle ve yoğunluk dağılımları. Journal of Fisheries Sciences. com, 4(3), 195-208.
  • Gulland, J.A. (1971). Science and fishery management. ICES Journal of Marine Science, 33(3), 471-477.
  • Gücü, A.C., Genç, Y., Dağtekin, M., Sakınan, S., Ak, O., Ok, M., & Aydın, İ. (2017). On Black Sea anchovy and its fishery. Reviews in Fisheries Science & Aquaculture, 25(3), 230- 244. DOI: 10.1080/23308249.2016.1276152
  • Henderson, P.A. (2019). A long-term study of Whiting, Merlangius merlangus (L) recruitment and population regulation in the Severn Estuary, UK. Journal of Sea Research, 155, 101825. DOI: 10.1016/j.seares.2019.101825
  • Heino, M., Søiland, H., Dahl, M., Alvarez, J., Anthonypillai, V., & Tangen, Ø. (2005). International blue whiting spawning stock survey, spring 2005.
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  • İşmen, A. (2002). A preliminary study on the population dynamics parameters of whiting (Merlangius merlangus euxinus) in Turkish black sea coastal waters. Turkish Journal of Zoology, 26(2), 157- 166.
  • Jones, R., & van Zalinge, N.P. (1981). Estimations of mortality rate and population size for shrimp in Kuwait waters. Kuwait Bulletin of Marine Science, 2, 273-288.
  • Kalaycı, F., & Yeşilçiçek, T. (2014). Effects of depth, season and mesh size on the catch and discards of whiting (Merlangius merlangus euxinus) gillnet fishery in the southern Black Sea, Turkey. Turkish Journal of Fisheries and Aquatic Sciences, 14(2), 449-456. DOI: 10.4194/1303-2712-v14_2_15
  • Karadurmuş, U. (2022). Marmara Denizi'ndeki Mezgit Balığının (Merlangius merlangus) Mevcut Durumu, Yönetimi ve Geleceğe Yönelik Çıkarımlar. https://agris.fao.org/search/en/ providers/123973/records/647481abbf943c8c798 89c81
  • Karahanlı, E. (2024). Türkiye Denizlerinde Önerilen Açık Deniz Koruma Alanları. Acta Aquatica Turcica, 20(2), 168-181. DOI: 10.22392/actaquatr.1347579
  • Kasapoğlu, N. (2018). Age, growth, and mortality of exploited stocks: anchovy, sprat, Mediterranean horse mackerel, whiting, and red mullet in the southeastern Black Sea. Aquatic Sciences and Engineering, 33(2), 39-49. DOI: 10.18864/ase201807
  • Mazlum, R.E, & Bilgin, S. (2014). Age, growth, reproduction and diet of the whiting, Merlangius merlangus euxinus (Nordmann, 1840), in the southeastern Black Sea. Cahiers de Biologie Marine, 55(4), 463-474.
  • Murua, H., & Saborido-Rey, F. (2003). Female reproductive strategies of marine, 200 of the North Atlantic. J. Northwest Atl. Fish. Sci. 33, 23- 31.
  • Nedreas, K., Florin, A., Cook, R., Fernandes, P., & Lorance, P. (2014). Merlangius merlangus. The IUCN Red List of Threatened Species 2014: e. T198585A45097610. http://dx.doi.org/ 10.2305/IUCN.UK.2014- 3.RLTS.T198585A45097610.en downloaded on 12 April 2023.
  • Prodanov, K., & Daskalov, G. (1995). Whiting (Merlangıus Merlangus Euxinus Nordmannı Along Bulgarıan Black Sea Durıng 1976-1993. Cahiers Options Méditerranéennes, 10, 73-75.
  • Prodanov, K., & Bradova, N. (2003). Stock Assessment of the Whiting (Merlangius merlangus) in the Western Part of the Black Sea During 1971‐1997. Proc., Institute of Oceanology, 4, 149-156.
  • Pauly, D. (1979). Gill size and temperature as governing factors in fish growth: a generalization of von Bertalanffy's growth formula. Ber. Inst. Meereskd. Christian-Albrechts Univ. Kiel 63, 156 pp.
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Güneydoğu Karadeniz balıkçılığında mezgit (Merlangius merlangus) bolluğu ve stoklarının yönetimi için stratejiler

Yıl 2025, Cilt: 10 Sayı: 3, 267 - 276, 30.05.2025

Erhan Çiloğlu , Cemalettin Şahin

https://doi.org/10.35229/jaes.1628391

Öz

Bu çalışmada, Doğu Karadeniz'deki ticari trol balıkçılığından 1,579 Merlangius merlangus örneklenmiştir. Toplanan örneklerin büyüme, stoka katılım ve stok yapısı FISAT-II yazılım paketindeki ELEFAN-I, Y/R, B/R, VPA ve Thompson ve Bell modelleri kullanılarak değerlendirilmiştir. Asimptotik boy (L∞), büyüme sabiti (K) ve t0 dahil olmak üzere von Bertalanffy büyüme parametreleri sırasıyla 40,89 cm, 0,10 cm ve -1,1411 cm olarak hesaplanmıştır. İlk yakalama boyu (Lc50) 11,82 cm ile 13,40 cm arasında değişmiştir. Toplam, doğal ve balıkçılık ölüm oranları sırasıyla 0,85, 0,29 ve 0,56 olarak tahmin edilmiştir. Mart, Ağustos ve Kasım aylarında meydana gelen üç farklı katılım dönemi tespit edilmiştir. VPA verilerine dayanarak, sabit biyokütlenin yaklaşık 569.620,7 ton olduğu tahmin edilmiştir. Analiz, mezgit için maksimum sürdürülebilir verime (MSY) 0,66'lık bir sömürü oranı ile ulaşılabileceğini göstermektedir. Thompson ve Bell yöntemi kullanılarak 0,56 F faktörü ile 449,70 ton olarak hesaplanan mevcut sömürü seviyesinde biyokütle azalmıştır. MSY'yi temsil eden 1,0'lık bir F faktörü 498,180 tona karşılık gelmektedir. Mevcut avlanma oranında (F = 0.56), biyokütle avlanmamış durumdaki 666,206 metrik tondan %25 (168,026 ton) azalmıştır.

Anahtar Kelimeler

Whiting, stoklara katılım başına nispi verim (Y'/R), biyokütle başına nispi verim (B'/R), maksimum sürdürülebilir verim (MSY), stok, doğu Karadeniz.

Kaynakça

  • Aksu, H. (2020). Estimation of growth parameters using length frequency data of whiting (Merlangius merlangus euxinus, Nordmann 1840), from black sea coasts of Turkey. Journal of New Results in Science, 9(2), 39-45. Anonymous. (2023) https://www.mgm.gov.tr/FILES/resmi- istatistikler/denizSuyu/2024-Karadeniz.pdf [14.10.2023]
  • Arkhipov, G., & Rovnina, O.A. (1990). Coll. papers vses. nauchno-issled. Inst. morsk. Rybn. Khoz. Oceanogr., 64-80 (in Russian)
  • Avşar, D. (2005). Balıkçılık biyolojisi ve popülasyon dinamiği. Nobel. Yayınevi, 289 s.
  • Avşar, D. (1998). Balıkçılık biyolojisi ve populasyon dinamiği. Çukurova Üniversitesi, Su Ürünleri Fakültesi, Ders Kitapları No:5, Adana, 303 s
  • Aydın, M., & Hacıoğlu, M.N. (2017). Trabzon Bölgesi’nde kullanılan mezgit uzatma ağlarının av verimi ve tür kompozisyonunun belirlenmesi. Ordu Üniversitesi Bilim ve Teknoloji Dergisi, 7(2), 226-238.
  • Barrios, A., Ernande, B., Mahé, K., Trenkel, V., & Rochet, M.J. (2017). Utility of mixed effects models to inform the stock structure of whiting in the Northeast Atlantic ocean. Fisheries Research, 190, 132-139. DOI: 10.1016/j.fishres.2017.02.005
  • Bat, L., Erdem, Y., Ustaoğlu, S., Yardım., Ö. & Satılmış, H.H. (2005). A study on the fishes of the central Black Sea coast of Turkey. Journal of the Black Sea/Mediterranean Environment 11, 281-296.
  • Bradova, N., & Prodanov, K. (2003). Growth rate of the whiting (Merlangius merlangus euxinus) from the western part of black sea. In Bulgarian academy of sciences (Vol. 4, pp. 157-164).
  • Beverton, R.J.H., & Holt, S.J. (1966). Manual of method for fish stock assessment Part 2. Tables of yield functions. FAO Fish. Tech. Pap.38 (Rev.1): 67p.
  • BSGM. (2024). 6/1 Numaralı Ticari Amaçlı Su Ürünleri Avcılığının Düzenlenmesi Hakkında Tebliğ https://www.resmigazete.gov.tr/eskiler/2024/08/ 20240811-3.htm [09.09.2024] BSGM. (2023). https://www.tarimorman.gov.tr/BSGM/Belgeler/ Icerikler/Su%20%C3%9Cr%C3%BCnleri%20V eri%20ve%20D%C3%B6k%C3%BCmanlar%C4 %B1/Bsgm-istatistik.pdf [14.10.2023]
  • Bilgin, S., Bal, H., & Taşçı, B. (2012). Length-based growth estimates and reproduction biology of whiting, Merlangius merlangus euxinus (Nordman, 1840) in the Southeast Black Sea. Turkish Journal of Fisheries and Aquatic Sciences, 12(4), 871-881. DOI: 10.4194/1303- 2712-v12_4_15
  • Cardinale, M., & Osio, G.C. (2013). Status of Mediterranean and black sea resources in European Waters in 2013. Results for stocks in GSA 1–29 (Mediterranean and Black Sea). DOI: 10.1016/j.marpolbul.2024.116200
  • Çiloğlu, E., Şahin, C., Zengin, M., & Genç, Y. (2001). Doğu Karadeniz, Trabzon-Yomra sahillerinde mezgit (Merlangius merlangus euxinus Nordmann, 1840) balığının bazı populasyon parametreleri ve üreme döneminin tespiti. Turkish Journal of Veterinary and Animal Sciences, 25(6), 831-837.
  • Erdem, Ü., Cebeci, M., & Yerli, B. (2006). Marmara denizi mezgit (Merlangius merlangus euxinus Nordmann, 1840) balığının bazı biyolojik özellikleri. Ege Journal of Fisheries and Aquatic Sciences, 23(1), 33-37.
  • FAO. (2022). The State Of World Fisheries and Aquaculture. https://www.fao.org/3/cc0461en/cc0461en.pdf
  • FAO. (2005). Agriculture organization of the United Nations, Marine Resources Service, Review of the state of world marine fishery resources (No. 457). Food & Agriculture Org.
  • Gayanilo, F.C., Jr Sparre, P., & Pauly, D. (1997). FAO- ICLARM stock assessment tools (FiSAT), Reference manual. FAO computerized information series (Fisheries), No.8. Rome, FAO, 262p.
  • Gönener, S., & Özdemir, S. (2013). Karadeniz’de (Sinop- İnceburun) dip trolü ile avlanabilir balıkların stok büyüklükleri ve biyokütle değişimleri. Journal of FisheriesSciences. com, 7(2), 125.
  • Gönener, S., & Bilgin, S. (2010). Karadeniz’de (Sinop- İnceburun) ticari dip trolü ile avlanabilir balık biyokütle ve yoğunluk dağılımları. Journal of Fisheries Sciences. com, 4(3), 195-208.
  • Gulland, J.A. (1971). Science and fishery management. ICES Journal of Marine Science, 33(3), 471-477.
  • Gücü, A.C., Genç, Y., Dağtekin, M., Sakınan, S., Ak, O., Ok, M., & Aydın, İ. (2017). On Black Sea anchovy and its fishery. Reviews in Fisheries Science & Aquaculture, 25(3), 230- 244. DOI: 10.1080/23308249.2016.1276152
  • Henderson, P.A. (2019). A long-term study of Whiting, Merlangius merlangus (L) recruitment and population regulation in the Severn Estuary, UK. Journal of Sea Research, 155, 101825. DOI: 10.1016/j.seares.2019.101825
  • Heino, M., Søiland, H., Dahl, M., Alvarez, J., Anthonypillai, V., & Tangen, Ø. (2005). International blue whiting spawning stock survey, spring 2005.
  • https://www.hi.no/resources/publikasjoner/toktra pporter/2005/nr.9_international_blue_whitting_s pawning_stock_survey_spring2005.pdf [20.09.2024]
  • Ishimura, G. (2003). Bioeconomic model approach for a fluctuating fish stock: bioeconomic assessment of harvest strategies for the Pacific whiting fishery (Doctoral dissertation, University of Washington). https://citeseerx.ist.psu.edu/ document?repid=rep1&type=pdf&doi=37dd53c1 9f6ff352bd4291cd9519ec5abfd09836
  • İşmen, A. (2002). A preliminary study on the population dynamics parameters of whiting (Merlangius merlangus euxinus) in Turkish black sea coastal waters. Turkish Journal of Zoology, 26(2), 157- 166.
  • Jones, R., & van Zalinge, N.P. (1981). Estimations of mortality rate and population size for shrimp in Kuwait waters. Kuwait Bulletin of Marine Science, 2, 273-288.
  • Kalaycı, F., & Yeşilçiçek, T. (2014). Effects of depth, season and mesh size on the catch and discards of whiting (Merlangius merlangus euxinus) gillnet fishery in the southern Black Sea, Turkey. Turkish Journal of Fisheries and Aquatic Sciences, 14(2), 449-456. DOI: 10.4194/1303-2712-v14_2_15
  • Karadurmuş, U. (2022). Marmara Denizi'ndeki Mezgit Balığının (Merlangius merlangus) Mevcut Durumu, Yönetimi ve Geleceğe Yönelik Çıkarımlar. https://agris.fao.org/search/en/ providers/123973/records/647481abbf943c8c798 89c81
  • Karahanlı, E. (2024). Türkiye Denizlerinde Önerilen Açık Deniz Koruma Alanları. Acta Aquatica Turcica, 20(2), 168-181. DOI: 10.22392/actaquatr.1347579
  • Kasapoğlu, N. (2018). Age, growth, and mortality of exploited stocks: anchovy, sprat, Mediterranean horse mackerel, whiting, and red mullet in the southeastern Black Sea. Aquatic Sciences and Engineering, 33(2), 39-49. DOI: 10.18864/ase201807
  • Mazlum, R.E, & Bilgin, S. (2014). Age, growth, reproduction and diet of the whiting, Merlangius merlangus euxinus (Nordmann, 1840), in the southeastern Black Sea. Cahiers de Biologie Marine, 55(4), 463-474.
  • Murua, H., & Saborido-Rey, F. (2003). Female reproductive strategies of marine, 200 of the North Atlantic. J. Northwest Atl. Fish. Sci. 33, 23- 31.
  • Nedreas, K., Florin, A., Cook, R., Fernandes, P., & Lorance, P. (2014). Merlangius merlangus. The IUCN Red List of Threatened Species 2014: e. T198585A45097610. http://dx.doi.org/ 10.2305/IUCN.UK.2014- 3.RLTS.T198585A45097610.en downloaded on 12 April 2023.
  • Prodanov, K., & Daskalov, G. (1995). Whiting (Merlangıus Merlangus Euxinus Nordmannı Along Bulgarıan Black Sea Durıng 1976-1993. Cahiers Options Méditerranéennes, 10, 73-75.
  • Prodanov, K., & Bradova, N. (2003). Stock Assessment of the Whiting (Merlangius merlangus) in the Western Part of the Black Sea During 1971‐1997. Proc., Institute of Oceanology, 4, 149-156.
  • Pauly, D. (1979). Gill size and temperature as governing factors in fish growth: a generalization of von Bertalanffy's growth formula. Ber. Inst. Meereskd. Christian-Albrechts Univ. Kiel 63, 156 pp.
  • Pauly, D. (1984). Fish population dynamics in tropical waters: a manual for use with programmable calculators (Vol. 8). WorldFish.
  • Pauly, D. (1986). Growth, mortality, and recruitment of commercially important fishes and penaeid shrimps in Indonesian waters (Vol. 351). WorldFish.
  • Radulescu, V. (2023). Environmental Conditions and the Fish Stocks Situation in the Black Sea, between Climate Change, War, and Pollution. Water, 15(6), 1012. DOI: 10.3390/w15061012
  • Raykov, V., Shlyakhov, V., Maximov, V., Radu, G., Staicu, I., Panayotova, M., & Bikarska, I. (2008). Limit and target reference points for rational exploitation of the turbot (Psetta maxima L.) and whiting (Merlangius merlangus euxinus Nordm.) in the western part of the Black Sea. In VI Annivers
  • Ricker, W.E. (1973). Linear regressions in fishery research. J Fish Res Board Can., 30, 409-434.
  • Ross, S.D., Nielsen, J.R., Gislason, H., Nielsen, A., & Andersen, N.G. (2018). Growth and food consumption of whiting Merlangius merlangus. Journal of Fish Biology, 93(2), 334-343. DOI: 10.1111/jfb.13763
  • Saeger, J., & Gayanilo, F.C. (1986). A revised graphics- orientated version of ELEFAN 0, I and II basic programs for use on HP 86/87 microcomputers. Tech. Rep. Dept. Mar. Fish. Tech. Rep. 8, 1-233.
  • Sağlam, N.E., & Sağlam, C. (2012). Population parameters of whiting (Merlangius merlangus euxinus L., 1758) in the South-Eastern Black Sea. Turkish Journal of Fisheries and Aquatic Sciences, 12(4). Conference of the Institute of zoology. Acta Zoologica Bulgarica (Vol. 2, pp. 305-315). DOI: 10.4194/1303-2712-v12_4_11
  • Salihoğlu, B., Arkin, S.S., Akoğlu, E., & Bettina, A.F. (2017). Evolution of future Black Sea fish stocks under changing environmental and climatic conditions. Frontiers in Marine Science, 4, 339.
  • Samsun, S. (2024). Karadeniz’in üç önemli demersal türüne ait av miktarlarının tarihsel değişiminin değerlendirilmesi. Turkish Journal of Maritime and Marine Sciences, 10(2), 105-115. DOI: 10.52998/trjmms.1400628
  • Samsun, O., & Akyol, O. (2017). Exploitation rate of whiting, Merlangius merlangus (Linnaeus, 1758) in the Central Black Sea, Turkey. Turkish Journal of Maritime and Marine Sciences, 3(1), 20-26.
  • Şahin, C., Öztürk, E., Emanet, M., & Ceylan, Y. (2021). Doğu Karadeniz’de mezgit (Merlangius merlangus, Nordmann, 1840) balığının yaş, büyüme ve ilk eşeysel olgunluk boyunun belirlenmesi. Acta Aquatica Turcica, 17(4), 450- 462. DOI: 10.22392/actaquatr.809314
  • Thompson, W.F., Bell, H. (1934). Biological statistics of the Pacific halibut fishery. 2. Effect of changes in intensity upon total yield, and yield per unit gear. Rep. Internat. Fish. Comm. 8, 48 pp.
  • Ünlüata, Ü. (2005). Türkiye'nin Karadeniz kıyısındaki balık stoklarının tespiti. Aquaculture Studies, 2005(2). https://dergipark.org.tr/tr/download/ article-file/204402
  • Yıldız, T., & Karakulak, F.S. (2018). "The catch composition of bottom trawl fishing in the Western Black Sea (Şı̇le-İğneada). Journal of Aquaculture Engineering and Fisheries Research 4(1), 20-34. DOI: 10.3153/JAEFR18003
  • Zengin, M., Akpınar, İ.Ö., Kaykaç, M.H., & Tosunoğlu, Z. (2019). Comparison of selectivity of the trawl codends for whiting (Merlangius merlangus euxinus) in the Black Sea. Ege Journal of Fisheries and Aquatic Sciences, 36(3), 301-311.
  • Zengin, M. (2000). Doğu Karadeniz Kıyılarındaki Kalkan (Scophthalmus maeoticus Pallas, 1811) Balığının Biyoekolojik Özellikleri ve Populasyon Parametreleri. Doktora Tezi, KTU. Fen Bilimleri Enstitüsü, Balıkçılık Teknolojisi Mühendisliği Anabilim Dalı, 221 s.
Toplam 54 adet kaynakça vardır.

Ayrıntılar

Birincil Dil İngilizce
Konular Balıkçılık Yönetimi, Sucul Kültür ve Balıkçılık Stok Değerlendirmesi
Bölüm Makaleler
Yazarlar

Erhan Çiloğlu 0000-0002-9995-0377

Cemalettin Şahin 0000-0002-7924-3536

Erken Görünüm Tarihi 15 Mayıs 2025
Yayımlanma Tarihi 30 Mayıs 2025
Gönderilme Tarihi 28 Ocak 2025
Kabul Tarihi 7 Mayıs 2025
Yayımlandığı Sayı Yıl 2025 Cilt: 10 Sayı: 3

Kaynak Göster

APA Çiloğlu, E., & Şahin, C. (2025). Abundance and stock management of whiting (Merlangius merlangus) in Southeastern Black Sea fisheries. Journal of Anatolian Environmental and Animal Sciences, 10(3), 267-276. https://doi.org/10.35229/jaes.1628391
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