A rare pelagic cephalopod Ocythoe tuberculata (Octopoda: Argonautoidea): The record fecundity for Octopoda and new data on morphometry

Ege Denizi’nde Ocythoe tuberculata’ya ait Nisan 2002 de Manto boyu ML=285 mm ve Mayıs 2003 de ML=335 mm olan iki adet olgun dişi birey elde edilmiştir. Manto boyu 335 mm olan dişi birey tüm denizlerde ve okyanuslarda bugüne kadar rapor edilen en büyük O. tuberculata bireyi olup, aynı zamanda yaklaşık bir milyon yumurta verimliliği ile Octopoda Ordosuna ait tüm türler içerisinde bu güne kadar rapor edilen en yüksek yumurtlama verimliliğine sahip bireydir. O. tuberculata için elimizde daha önceden rapor edilmemiş bireyler ile literatürdeki daha önce rapor edilen bireyler de bir araya getirilerek oluşturulan ML ve total ağırlık (TW) ilişkisi (TW=0,0061*ML2,231) ve dişlere ait alt diş başlık boyu (LHL) ile manto boyu ilişkisi (ML= 18,85*LHL-31,633) hesaplanarak bu çalışmada ilk kez rapor edilmektedir.

Anahtar Kelimeler:

morfometri, Cephalopoda, Octopodidae, döllenme gücü

Nadir rastlanan bir pelajik ahtapot Ocythoe tuberculata (Octopoda: Argonautoidea): Ahtapotların yumurta verimliliği ve morfometrisi üzerine yeni kayıtlar

Two adult female of Ocythoe tuberculata were caught in April 2002 (Mantle length, ML=285 mm) and in May 2003 (ML= 335 mm) in Izmir Bay, Aegean Sea the second one being the biggest individual ever found in all oceans as well as it had the highest known fecundity for the entire order Octopoda – around one million. Relations between mantle length (ML) to total weight (TW) was calculated as TW=0.0061*ML2.231, and to lower hood length (LHL) was as ML= 18.85*LHL-31.633. For this species relation between mantle length body weight and beak measurements were calculated for the first time using our unpublished and literature data.

Keywords:

morphometrics, Cephalopoda, Octopodidae, fecundity,

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