Feeding Habits of the Scalloped Spiny Lobstrer, Panulirus homarus   (Linnaeus, 1758) (Decapoda: Palinuridae) from the South East Coast of   Iran

Nassrin Mashaii; Farhad Rajabipour; And Arash Shakouri

Makale detayları

Feeding Habits of the Scalloped Spiny Lobstrer, Panulirus homarus (Linnaeus, 1758) (Decapoda: Palinuridae) from the South East Coast of Iran

Yazarlar:

Nassrin Mashaii | Farhad Rajabipour | And Arash Shakouri

Yayıncı:

Trabzon Su Ürünleri Merkez Araştırma Enstitüsü

Dergi:

Turkish Journal of Fisheries and Aquatic Sciences 2011 Vol.11 Issue 1

Belge Tipi:

Makale

Yayın Tarihi:

1/2011

Belge Dili:

Türkçe

Document ID (Org No.):

2000838405

Sıklık:

Üç Aylık

pISSN:

1303-2712

Anahtar kelimeler:

Özet:

 

Certain ecological aspects of  the feeding habits of 260 scalloped  lobsters Panulirus homarus collected during monthly   dives off  the southeast coast of  Iran were considered. Parameters under consideration  included: water  temperature, salinity,   urbidity, pH, dissolved oxygen and macrobenthose of the lobsters habitat. The mean number of empty stomachs varied from   25%  to  62%.  Statistical  analysis  revealed  no  monthly  or  seasonal  significant  difference  in  the  frequency  of  non-empty   stomachs (P>0.05). 1 to 6 prey items were distinguishable in each non-empty stomach. Monthly mean of point counts of prey   obtained was  from 8.76±4.18  to 154.95±73.62, without any significant difference by Tukeys' HSD  test. Bivalves often had   he maximum  amounts  of Fi  and Pi  amongst  different  prey  items. Pearson  χ2    test did not  show  any  significant  difference   between frequency of occurrence of each prey item with different length classes, sex, moulting condition and presence of eggs   n females (P>0.05). Ivlev electivity  index of crabs, gastropods and bivalves was close  to 1 and sloped  to  -1 for polychaetes   and  echinoderms.  This  index  revealed  crabs,  bivalves  and  gastropods  were  more  important  in  the  diet  than  sediment   hroughout the year. Frequencies of food occurrence suggest bivalves as the main food; crabs, gastropods, barnacles and algae   as  secondary  food  and  polychaetes,  fish,  echinoderms  and  Ascidiacea  as  incidental  food  for  P.  homarus  in  the  area.   Spearmans'  correlation  coefficients  of  stomach  fullness  against  different  length  classes,  sexes,  moulting  and  ovigerous   females were not significantly different  (P>0.05). There was only a significant Pearsons' correlation between  the number of   point for bivalves in the stomach against body weight (P<0.05). 	 	 		 .

 

Certain ecological aspects of  the feeding habits of 260 scalloped  lobsters Panulirus homarus collected during monthly   dives off  the southeast coast of  Iran were considered. Parameters under consideration  included: water  temperature, salinity,   urbidity, pH, dissolved oxygen and macrobenthose of the lobsters habitat. The mean number of empty stomachs varied from   25%  to  62%.  Statistical  analysis  revealed  no  monthly  or  seasonal  significant  difference  in  the  frequency  of  non-empty   stomachs (P>0.05). 1 to 6 prey items were distinguishable in each non-empty stomach. Monthly mean of point counts of prey   obtained was  from 8.76±4.18  to 154.95±73.62, without any significant difference by Tukeys' HSD  test. Bivalves often had   he maximum  amounts  of Fi  and Pi  amongst  different  prey  items. Pearson  χ2    test did not  show  any  significant  difference   between frequency of occurrence of each prey item with different length classes, sex, moulting condition and presence of eggs   n females (P>0.05). Ivlev electivity  index of crabs, gastropods and bivalves was close  to 1 and sloped  to  -1 for polychaetes   and  echinoderms.  This  index  revealed  crabs,  bivalves  and  gastropods  were  more  important  in  the  diet  than  sediment   hroughout the year. Frequencies of food occurrence suggest bivalves as the main food; crabs, gastropods, barnacles and algae   as  secondary  food  and  polychaetes,  fish,  echinoderms  and  Ascidiacea  as  incidental  food  for  P.  homarus  in  the  area.   Spearmans'  correlation  coefficients  of  stomach  fullness  against  different  length  classes,  sexes,  moulting  and  ovigerous   females were not significantly different  (P>0.05). There was only a significant Pearsons' correlation between  the number of   point for bivalves in the stomach against body weight (P<0.05). 	 	 		 .

Makale detayları

Feeding Habits of the Scalloped Spiny Lobstrer, Panulirus homarus (Linnaeus, 1758) (Decapoda: Palinuridae) from the South East Coast of Iran

Yazarlar:

Nassrin Mashaii | Farhad Rajabipour | And Arash Shakouri

Yayıncı:

Trabzon Su Ürünleri Merkez Araştırma Enstitüsü

Dergi:

Turkish Journal of Fisheries and Aquatic Sciences 2011 Vol.11 Issue 1

Belge Tipi:

Makale

Yayın Tarihi:

1/2011

Belge Dili:

Türkçe

Document ID (Org No.):

2000838405

Sıklık:

Üç Aylık

pISSN:

1303-2712

Lobster

Panulirus homarus

feeding ecology

Oman Sea

Iran

Sayı

Makale detayları

Feeding Habits of the Scalloped Spiny Lobstrer, Panulirus homarus (Linnaeus, 1758) (Decapoda: Palinuridae) from the South East Coast of Iran

Yazarlar: Nassrin Mashaii | Farhad Rajabipour | And Arash Shakouri

Yayıncı: Trabzon Su Ürünleri Merkez Araştırma Enstitüsü

Dergi: Turkish Journal of Fisheries and Aquatic Sciences 2011 Vol.11 Issue 1

Belge Tipi: Makale

Yayın Tarihi: 1/2011

Belge Dili: Türkçe

Document ID (Org No.): 2000838405

Sıklık: Üç Aylık

pISSN: 1303-2712

Lobster

Panulirus homarus

feeding ecology

Oman Sea

Iran

Sayı

Yazarlar:

Nassrin Mashaii | Farhad Rajabipour | And Arash Shakouri

Yayıncı:

Trabzon Su Ürünleri Merkez Araştırma Enstitüsü

Dergi:

Turkish Journal of Fisheries and Aquatic Sciences 2011 Vol.11 Issue 1

Belge Tipi:

Makale

Yayın Tarihi:

1/2011

Belge Dili:

Türkçe

Document ID (Org No.):

2000838405

Sıklık:

Üç Aylık

pISSN:

1303-2712