Some Population Parameters of Wedge Clam (Donax trunculus Linnaeus, 1758) in Sinop Coasts

Yakup Erdem; Funda Üstün

Makale detayları

Some Population Parameters of Wedge Clam (Donax trunculus Linnaeus, 1758) in Sinop Coasts

Yazarlar:

Yakup Erdem | Funda Üstün

Yayıncı:

Ordu University

Ana Başlıklar:

Fish Anatomy | Water Invertebrates | Aquaculture and Fisheries (Other)

Dergi:

Turkish Journal of Maritime and Marine Sciences Vol.9 Issue 1, pp.10-21

Belge Tipi:

Makale

Yayın Tarihi:

1/2023

Belge Dili:

Türkçe

Document ID (Org No.):

2001289633

pISSN:

2564-7016

Anahtar kelimeler:

Özet:

 This study was carried out to determine some population parameters of wedge clam D. trunculus in Sinop South Black Sea coasts. In the monthly samplings, a total of 1417 individuals were caught and the smallest, largest and average shell lengths were determined as 6.94 mm, 33.78 mm and 19.637  0.1202 mm, respectively. Only 108 7.6 of the sampled individuals were 2.5 cm or larger, which is the current minimum catch length. While the average shell width as 11.945  0.0650 mm and the ratio of crustal width to shell length was determined as 0.613  0.0008, mean shell height and the ratio of shell height to shell length was estimated as 6.192  0.0409 mm and 0.314  0.00046. The lengthweight relationship and Fultons condition factor for all sampled individuals was estimated as W0.00022 L2.82962 r0.992 and as 0.00013  0.0000004, and the mean meat yield ratio of samples was determined as 0.352  0.0016. It was determined that reproduction occurring in April and May and the sex ratio was 0.953:1.

 This study was carried out to determine some population parameters of wedge clam D. trunculus in Sinop South Black Sea coasts. In the monthly samplings, a total of 1417 individuals were caught and the smallest, largest and average shell lengths were determined as 6.94 mm, 33.78 mm and 19.637  0.1202 mm, respectively. Only 108 7.6 of the sampled individuals were 2.5 cm or larger, which is the current minimum catch length. While the average shell width as 11.945  0.0650 mm and the ratio of crustal width to shell length was determined as 0.613  0.0008, mean shell height and the ratio of shell height to shell length was estimated as 6.192  0.0409 mm and 0.314  0.00046. The lengthweight relationship and Fultons condition factor for all sampled individuals was estimated as W0.00022 L2.82962 r0.992 and as 0.00013  0.0000004, and the mean meat yield ratio of samples was determined as 0.352  0.0016. It was determined that reproduction occurring in April and May and the sex ratio was 0.953:1.

 This study was carried out to determine some population parameters of wedge clam D. trunculus in Sinop South Black Sea coasts. In the monthly samplings, a total of 1417 individuals were caught and the smallest, largest and average shell lengths were determined as 6.94 mm, 33.78 mm and 19.637  0.1202 mm, respectively. Only 108 7.6 of the sampled individuals were 2.5 cm or larger, which is the current minimum catch length. While the average shell width as 11.945  0.0650 mm and the ratio of crustal width to shell length was determined as 0.613  0.0008, mean shell height and the ratio of shell height to shell length was estimated as 6.192  0.0409 mm and 0.314  0.00046. The lengthweight relationship and Fultons condition factor for all sampled individuals was estimated as W0.00022 L2.82962 r0.992 and as 0.00013  0.0000004, and the mean meat yield ratio of samples was determined as 0.352  0.0016. It was determined that reproduction occurring in April and May and the sex ratio was 0.953:1.

 Bu çalışma Sinop kıyılarında kum şırlanının D. trunculus bazı populasyon parametrelerini belirlemek amacıyla yürütülmüştür. Aylık olarak yapılan örneklemelerde toplam 1417 adet birey elde edilmiş, en küçük, en büyük ve ortalama kabuk boyu sırasıyla 6.94 mm, 33.78 mm ve 19.637  0.1202 mm olarak belirlenmiştir. Örneklenen bireylerin sadece 108 adedi 7.6 geçerli asgari avlama boyu olan 2.5 cm ve daha büyük bireylerden oluşmaktadır. Ortalama kabuk genişliği 11.945  0.0650 mm, kabuk genişliğinin kabuk boyuna oranı 0.613  0.0008 olarak belirlenirken, ortalama kabuk yüksekliği 6.192  0.0409 mm ve kabuk yüksekliğinin kabuk uzunluğuna boyuna oranı 0.314  0.00046 olarak tahmin edilmiştir. Örneklenen tüm bireyler için boyağırlık ilişkisi denklemi W0.00022 L2.82962 r0.992, Fultonun kondisyon faktörü 0.00013  0.0000004 ve ortalama et oranı 0.352  0.0016 olarak hesaplanmıştır. Üreme Nisan ve Mayıs aylarında gerçekleşmekte olup cinsiyet oranı 0.953:1 olarak tespit edilmiştir.

Makale detayları

Some Population Parameters of Wedge Clam (Donax trunculus Linnaeus, 1758) in Sinop Coasts

Yazarlar:

Yakup Erdem | Funda Üstün

Yayıncı:

Ordu University

Ana Başlıklar:

Fish Anatomy | Water Invertebrates | Aquaculture and Fisheries (Other)

Dergi:

Turkish Journal of Maritime and Marine Sciences Vol.9 Issue 1, pp.10-21

Belge Tipi:

Makale

Yayın Tarihi:

1/2023

Belge Dili:

Türkçe

Document ID (Org No.):

2001289633

pISSN:

2564-7016

Donax trunculus

wedge clam

morphometric characters

population parametersDonax trunculus

kum şırlanı

şekilsel özellikler

populasyon parametreleri

Sayı

Makale detayları

Yazarlar: Yakup Erdem | Funda Üstün

Yayıncı: Ordu University

Ana Başlıklar: Fish Anatomy | Water Invertebrates | Aquaculture and Fisheries (Other)

Dergi: Turkish Journal of Maritime and Marine Sciences Vol.9 Issue 1, pp.10-21

Belge Tipi: Makale

Yayın Tarihi: 1/2023

Belge Dili: Türkçe

Document ID (Org No.): 2001289633

pISSN: 2564-7016

Sayı

Yazarlar:

Yakup Erdem | Funda Üstün

Yayıncı:

Ordu University

Ana Başlıklar:

Fish Anatomy | Water Invertebrates | Aquaculture and Fisheries (Other)

Dergi:

Turkish Journal of Maritime and Marine Sciences Vol.9 Issue 1, pp.10-21

Belge Tipi:

Makale

Yayın Tarihi:

1/2023

Belge Dili:

Türkçe

Document ID (Org No.):

2001289633

pISSN:

2564-7016