Research Article

Length-Frequency Distribution of European Hake, Merluccius merluccius from 1995 to 2016 in the Sea of Marmara

Volume: 2 Number: 2 December 27, 2019
TR EN

Length-Frequency Distribution of European Hake, Merluccius merluccius from 1995 to 2016 in the Sea of Marmara

Abstract

In this study, European hake (Merluccius merluccius) is one of the most important demersal species of the Sea of Marmara, has been subjected to estimate variation in length and size distribution based on obtained data from Sea of Marmara. A total of 174 bottom trawl hauls were performed in 19 stations representing the entire Sea of Marmara from 1995 to 2016 (July and November 1995, March and October 1996, December 2009, December 2010, February 2011 and August 2016). The estimation of length-weight relationships (LWRs) and distribution of length frequency was estimated according to years and sexes. A total of 5453 speciemens were evaluated. Sex ratio was calculated as 1:1.2 males to females. Overall length-weight relations were estimated W=0.006L3.077 (r2=0.97) for females, W=0.008L2.97 (r2=0.95) for males. According to the length frequency results, observed changes were not significant in size distribution of the samples between 1995 to 1996 and from 2009 to 2011. However, the median value of the total lengths of the individuals obtained in the 90s is greater than the values obtained at the end of the 2000s. The size distributions of the samples obtained in the 1990s are in a wider range than the size range of samples in 2000s. Especially in 2009 and 2016, it was observed that the size distribution was very narrow, also very few large-sized individuals were obtained. 

Keywords

Supporting Institution

The Scientific and Technological Research Council of Turkey (TUBITAK)

Project Number

115Y107

Thanks

This study is dedicated to Prof. Erdoğan Okuş, who always will be remembered with his great contribution to the Turkish marine sciences. Authors are grateful to Dr. Ayhan Uysal, the crew of R/V ARAR and R/V ALEMDAR II for their help in samplings.

References

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Details

Primary Language

English

Subjects

Structural Biology

Journal Section

Research Article

Publication Date

December 27, 2019

Submission Date

October 18, 2019

Acceptance Date

December 17, 2019

Published in Issue

Year 2019 Volume: 2 Number: 2

APA
Gül, G., Yüksek, A., Murat-dalkara, E., & Demirel, N. (2019). Length-Frequency Distribution of European Hake, Merluccius merluccius from 1995 to 2016 in the Sea of Marmara. Çanakkale Onsekiz Mart University Journal of Marine Sciences and Fisheries, 2(2), 167-172. https://izlik.org/JA98RD45GB
AMA
1.Gül G, Yüksek A, Murat-dalkara E, Demirel N. Length-Frequency Distribution of European Hake, Merluccius merluccius from 1995 to 2016 in the Sea of Marmara. JMSF. 2019;2(2):167-172. https://izlik.org/JA98RD45GB
Chicago
Gül, Güzin, Ahsen Yüksek, Elif Murat-dalkara, and Nazlı Demirel. 2019. “Length-Frequency Distribution of European Hake, Merluccius Merluccius from 1995 to 2016 in the Sea of Marmara”. Çanakkale Onsekiz Mart University Journal of Marine Sciences and Fisheries 2 (2): 167-72. https://izlik.org/JA98RD45GB.
EndNote
Gül G, Yüksek A, Murat-dalkara E, Demirel N (December 1, 2019) Length-Frequency Distribution of European Hake, Merluccius merluccius from 1995 to 2016 in the Sea of Marmara. Çanakkale Onsekiz Mart University Journal of Marine Sciences and Fisheries 2 2 167–172.
IEEE
[1]G. Gül, A. Yüksek, E. Murat-dalkara, and N. Demirel, “Length-Frequency Distribution of European Hake, Merluccius merluccius from 1995 to 2016 in the Sea of Marmara”, JMSF, vol. 2, no. 2, pp. 167–172, Dec. 2019, [Online]. Available: https://izlik.org/JA98RD45GB
ISNAD
Gül, Güzin - Yüksek, Ahsen - Murat-dalkara, Elif - Demirel, Nazlı. “Length-Frequency Distribution of European Hake, Merluccius Merluccius from 1995 to 2016 in the Sea of Marmara”. Çanakkale Onsekiz Mart University Journal of Marine Sciences and Fisheries 2/2 (December 1, 2019): 167-172. https://izlik.org/JA98RD45GB.
JAMA
1.Gül G, Yüksek A, Murat-dalkara E, Demirel N. Length-Frequency Distribution of European Hake, Merluccius merluccius from 1995 to 2016 in the Sea of Marmara. JMSF. 2019;2:167–172.
MLA
Gül, Güzin, et al. “Length-Frequency Distribution of European Hake, Merluccius Merluccius from 1995 to 2016 in the Sea of Marmara”. Çanakkale Onsekiz Mart University Journal of Marine Sciences and Fisheries, vol. 2, no. 2, Dec. 2019, pp. 167-72, https://izlik.org/JA98RD45GB.
Vancouver
1.Güzin Gül, Ahsen Yüksek, Elif Murat-dalkara, Nazlı Demirel. Length-Frequency Distribution of European Hake, Merluccius merluccius from 1995 to 2016 in the Sea of Marmara. JMSF [Internet]. 2019 Dec. 1;2(2):167-72. Available from: https://izlik.org/JA98RD45GB