Observations on the Stock Dynamics of Red-Blue Shrimp Aristeus antennatus (Risso, 1816) in Antalya Bay

Coşkun Menderes Aydın; Eyüp Mümtaz Tıraşın

Makale detayları

Observations on the Stock Dynamics of Red-Blue Shrimp Aristeus antennatus (Risso, 1816) in Antalya Bay

Yazarlar:

Coşkun Menderes Aydın | Eyüp Mümtaz Tıraşın

Yayıncı:

Isparta University of Applied Sciences

Ana Başlıklar:

Yapısal Biyoloji

Dergi:

Acta Aquatica Turcica Vol.19 Issue 2, pp.88-108

Belge Tipi:

Makale

Yayın Tarihi:

1/2023

Belge Dili:

Türkçe

Document ID (Org No.):

2001290078

pISSN:

2651-5474

Anahtar kelimeler:

Özet:

 The samples of Aristeus antennatus used in the present investigation were collected from Antalya Bay northeastern Mediterranean Sea during the experimental trawl surveys carried out monthly between July 2016 and July 2017 in accordance with the MEDITS International Bottom Trawl Survey in the Mediterranean protocol. The biomass index and the abundance index were calculated as 13.6 kgkm2 and 794 nkm2, respectively. The relationship between total weight TW and carapace length CL was estimated to be TW0.0029CL2.433 r20.99 for both sexes combined. The von Bertalanffy growth parameter estimates were CL62.47 mm, K0.293 year-1, tanchor0.795 year for females, and CL34.19 mm, K0.614 year-1, tanchor0.287 year for males. The summer season was determined as the reproduction period. Recruitment took place in spring and autumn, and the sex ratio was found to be 1:0.14 in favor of females. The median CL at first maturity was estimated as 26.15 mm for females and 20.53 mm for males. The annual total mortality rate Z was 1.38 and 1.56, the annual natural mortality rate M 0.55 and 0.59, and the exploitation rate E 0.60 and 0.62 for females and males, respectively. The temporal closure of Antalya Bay between 15 April and 15 September for commercial trawl fisheries in accordance with the national fishery regulations in effect is of great importance for the sustainable fisheries of this species.

 The samples of Aristeus antennatus used in the present investigation were collected from Antalya Bay northeastern Mediterranean Sea during the experimental trawl surveys carried out monthly between July 2016 and July 2017 in accordance with the MEDITS International Bottom Trawl Survey in the Mediterranean protocol. The biomass index and the abundance index were calculated as 13.6 kgkm2 and 794 nkm2, respectively. The relationship between total weight TW and carapace length CL was estimated to be TW0.0029CL2.433 r20.99 for both sexes combined. The von Bertalanffy growth parameter estimates were CL62.47 mm, K0.293 year-1, tanchor0.795 year for females, and CL34.19 mm, K0.614 year-1, tanchor0.287 year for males. The summer season was determined as the reproduction period. Recruitment took place in spring and autumn, and the sex ratio was found to be 1:0.14 in favor of females. The median CL at first maturity was estimated as 26.15 mm for females and 20.53 mm for males. The annual total mortality rate Z was 1.38 and 1.56, the annual natural mortality rate M 0.55 and 0.59, and the exploitation rate E 0.60 and 0.62 for females and males, respectively. The temporal closure of Antalya Bay between 15 April and 15 September for commercial trawl fisheries in accordance with the national fishery regulations in effect is of great importance for the sustainable fisheries of this species.

 The samples of Aristeus antennatus used in the present investigation were collected from Antalya Bay northeastern Mediterranean Sea during the experimental trawl surveys carried out monthly between July 2016 and July 2017 in accordance with the MEDITS International Bottom Trawl Survey in the Mediterranean protocol. The biomass index and the abundance index were calculated as 13.6 kgkm2 and 794 nkm2, respectively. The relationship between total weight TW and carapace length CL was estimated to be TW0.0029CL2.433 r20.99 for both sexes combined. The von Bertalanffy growth parameter estimates were CL62.47 mm, K0.293 year-1, tanchor0.795 year for females, and CL34.19 mm, K0.614 year-1, tanchor0.287 year for males. The summer season was determined as the reproduction period. Recruitment took place in spring and autumn, and the sex ratio was found to be 1:0.14 in favor of females. The median CL at first maturity was estimated as 26.15 mm for females and 20.53 mm for males. The annual total mortality rate Z was 1.38 and 1.56, the annual natural mortality rate M 0.55 and 0.59, and the exploitation rate E 0.60 and 0.62 for females and males, respectively. The temporal closure of Antalya Bay between 15 April and 15 September for commercial trawl fisheries in accordance with the national fishery regulations in effect is of great importance for the sustainable fisheries of this species.

 Bu çalışmada değerlendirilen Aristeus antennatus örnekleri, Antalya Körfezinde Temmuz 2016 ile Temmuz 2017 arasında aylık olarak balıkçılıktan bağımsız ve MEDITS International Bottom Trawl Survey in the Mediterranean protokolüne uygun olarak yapılan trol sörveyleri ile toplanmıştır. Biyokütle indeksi 13,6 kgkm2 ve bolluk indeksi 794 bireykm2 olarak hesaplanmıştır. Toplam vücut ağırlığı TW ile karapaks boyu CL arasındaki ilişki, TW0,0029CL2,433 r20.99 olarak tahmin edilmiştir. von Bertalanffy büyüme parametreleri, dişiler için CL62,47 mm, K0,293 yıl-1, tçapa0,795 yıl ve erkekler için CL34,19 mm, K0,614 yıl-1, tçapa0,287 yıl olarak bulunmuştur. Üreme dönemi yaz mevsimi olarak belirlenmiş olup stoka katılım ilkbahar ve sonbahar aylarında gerçekleşmektedir. Dişi:erkek oranı, 1:0,14 olarak bulunmuştur. İlk üreme boyu, dişiler için 26,15 mm CL, erkekler için de 20,53 mm CL olarak tahmin edilmiştir. Dişiler ve erkekler için yıllık toplam ölüm oranı Z sırasıyla 1,38 ve 1,56, yıllık doğal ölüm oranı M 0,55 ve 0,59, yıllık sömürü oranı E da 0,60 ve 0,62 olarak bulunmuştur. Yürürlükte olan mevzuat gereğince Antalya Körfezinin 15 Nisan-15 Eylül tarihleri arasında trol balıkçılığına kapalı olması yerinde bir uygulama olup türün sürdürülebilir balıkçılığı için büyük önem taşımaktadır.

Makale detayları

Observations on the Stock Dynamics of Red-Blue Shrimp Aristeus antennatus (Risso, 1816) in Antalya Bay

Yazarlar:

Coşkun Menderes Aydın | Eyüp Mümtaz Tıraşın

Yayıncı:

Isparta University of Applied Sciences

Ana Başlıklar:

Yapısal Biyoloji

Dergi:

Acta Aquatica Turcica Vol.19 Issue 2, pp.88-108

Belge Tipi:

Makale

Yayın Tarihi:

1/2023

Belge Dili:

Türkçe

Document ID (Org No.):

2001290078

pISSN:

2651-5474

Aristeus antennatus

Antalya Bay

ELEFAN

CPUE

MEDITSAntalya Körfezi

Aristeus antennatus

ELEFAN

MEDITS

CPUE

Sayı

Makale detayları

Yazarlar: Coşkun Menderes Aydın | Eyüp Mümtaz Tıraşın

Yayıncı: Isparta University of Applied Sciences

Ana Başlıklar: Yapısal Biyoloji

Dergi: Acta Aquatica Turcica Vol.19 Issue 2, pp.88-108

Belge Tipi: Makale

Yayın Tarihi: 1/2023

Belge Dili: Türkçe

Document ID (Org No.): 2001290078

pISSN: 2651-5474

Sayı

Yazarlar:

Coşkun Menderes Aydın | Eyüp Mümtaz Tıraşın

Yayıncı:

Isparta University of Applied Sciences

Ana Başlıklar:

Yapısal Biyoloji

Dergi:

Acta Aquatica Turcica Vol.19 Issue 2, pp.88-108

Belge Tipi:

Makale

Yayın Tarihi:

1/2023

Belge Dili:

Türkçe

Document ID (Org No.):

2001290078

pISSN:

2651-5474