A comparative investigation between growth of Gladius and morphology of Uroteuthis duvaucelii in the Persian Gulf and Oman Sea

A comparative investigation between growth of Gladius and morphology of Uroteuthis duvaucelii in the Persian Gulf and Oman Sea

Authors

  • Shadi Khatami Department of Marine Biology, Science and Research Branch, Islamic Azad University, Iran, Islamic Republic of
  • Tooraj Valinassab Iranian Fisheries Research Organization (IFRO), Iran, Islamic Republic of
  • Pargol Ghavam Mostafavi Department of Marine Biology, Science and Research Branch, Islamic Azad University, Iran, Islamic Republic of
  • Seyed Mohammad Reza Fatemi Department of Marine Biology, Science and Research Branch, Islamic Azad University, Iran, Islamic Republic of
  • Farhad Keymaram Iranian Fisheries Research Organization (IFRO), Iran, Islamic Republic of

Abstract

A comparative investigation between growths of Gladius with some morphometric measurements of Uroteuthis duvaucelii was carried out within two water body of the Persian Gulf and Oman Sea in 2011. A total of 213 specimens were collected and 16 parameters were measured of which amongst them, 5 parameters of length and width of mantle, length and width of fin and Gladius width showed significant relationship with length of Gladius. There was no significant differences between Gladius of the Persian Gulf and Oman Sea but it is noteworthy to be mentioned that males and females have difference in shape, namely the width of Gladius in females are 1.32 times bigger than males. The Mantle length-Weight relationship showed an allometric growth (b=2.83, r2=0.97 in The Oman Sea and b=2.13, r2=0.84 in The Persian Gulf). A high significant correlation was determined between growth of Gladius with length of mantle both in the Persian Gulf and Oman Sea with estimated r=0.989 and 0.867, respectively.

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Published

2014-08-20

Issue

Vol. 6 No. 3 (2014)

Section

Articles

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