A review of biological patterns of the blue-red shrimp Aristeus antennatus in the Mediterranean Sea: a case study of the population of Antalya Bay, eastern Mediterranean Sea

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DEVAL M. C., KAPIRIS K.

SCIENTIA MARINA, cilt.80, sa.3, ss.339-348, 2016 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Derleme
  • Cilt numarası: 80 Sayı: 3
  • Basım Tarihi: 2016
  • Doi Numarası: 10.3989/scimar.04411.22a
  • Dergi Adı: SCIENTIA MARINA
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.339-348
  • Anahtar Kelimeler: blue-red shrimp, Aristeus antennatus, Antalya Bay, Mediterranean, growth, mortality, DEEP-WATER SHRIMP, BALEARIC-ISLANDS, ARISTAEOMORPHA-FOLIACEA, GROWTH-PARAMETERS, GENETIC-STRUCTURE, RISSO, DECAPODA, WESTERN, FISHERY, DENDROBRANCHIATA
  • Akdeniz Üniversitesi Adresli: Evet

Özet

During three surveys between September 2009 and June 2011, a total of 20867 specimens of A. antennatus were caught from the 127 successful hauls with a total towing time of 219.5 h. Carapace length ranged between 12-61 mm for females (mean length, 35.8 +/- 8.2 mm) and 14-35 mm for males (24.8 +/- 3.4 mm). The two-way MANOVA shoved that depth had a significant effect on the abundance (p<0.05) and biomass (p<0.01) indices. However, season showed an insignificantly effect on both indices. The highest values of abundance and biomass were obtained in the depth stratum of 500 m. There was a statistically significant difference in the overall sex ratio from the expected 1:1 (p<0.05). The highest percentages of mature adult females (carapace length >27 mm) were recorded in June, July and August. The monthly gonadosomatic index of A. antennatus females changed seasonally, reaching a maximum value between July and August. The length-weight relationships in female and male specimens exhibited a strong negative allometry. The monthly length-frequency distributions showed that females of A. antennatus exhibited a maximum of six modal size groups per year. The recruitment of young-of-the-year took place mainly between January-April. The fishing mortality, reference point (F-0.1) of fisheries mortality and exploitation rate were 0.498 year(-1), 0.444 year(-1) and 0.524 year(-1), respectively. The fishery activity and the biological aspects of A. antennatus in the Antalya Bay have a lot of common and non-common points with other areas of the Mediterranean Sea. The above-mentioned differences could be attributed to the different oceanographic and environmental parameters in the present study area.

During three surveys between September 2009 and June 2011, a total of 20867 specimens of A. antennatus were caught from the 127 successful hauls with a total towing time of 219.5 h. Carapace length ranged between 12-61 mm for females (mean length, 35.8±8.2 mm) and 14-35 mm for males (24.8±3.4 mm). The two-way MANOVA shoved that depth had a significant effect on the abundance (p<0.05) and biomass (p<0.01) indices. However, season showed an insignificantly effect on both indices. The highest values of abundance and biomass were obtained in the depth stratum of 500 m. There was a statistically significant difference in the overall sex ratio from the expected 1:1 (p<0.05). The highest percentages of mature adult females (carapace length >27 mm) were recorded in June, July and August. The monthly gonadosomatic index of A. antennatus females changed seasonally, reaching a maximum value between July and August. The length-weight relationships in female and male specimens exhibited a strong negative allometry. The monthly length-frequency distributions showed that females of A. antennatus exhibited a maximum of six modal size groups per year. The recruitment of young-of-the-year took place mainly between January-April. The fishing mortality, reference point (F0.1) of fisheries mortality and exploitation rate were 0.498 year−1, 0.444 year−1 and 0.524 year−1, respectively. The fishery activity and the biological aspects of A. antennatus in the Antalya Bay have a lot of common and non-common points with other areas of the Mediterranean Sea. The above-mentioned differences could be attributed to the different oceanographic and environmental parameters in the present study area.