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Effects of Primary Sex Ratio on Operational Sex Ratio in Sea Urchin, Echinometra mathaei

Effects of Primary Sex Ratio on Operational Sex Ratio in Sea Urchin, Echinometra mathaei

Mousa Keshavarz1*, Maryam Soyuf Jahromi2

1Department of Marine Biology, Faculty of Marine Science and Technology, University of Hormozgan, Post Box: 3995 Bandar Abbas, Iran
2Department of Physical Oceanography, Faculty of Marine Science and Technology, University of Hormozgan, Post Box: 3995 Bandar Abbas, Iran

*           Corresponding author: musakeshavarz@gmail.com 

Fig 1

A map of study area, Bandar Lengeh, in the Persian Gulf. Bottom left corner: The position of Persian Gulf; Bottom left middle: The position of Bandar Lengeh (map source: Iranian Army Geographic Agency); and finally the position of the station in Bandar Lengeh (map source: Google Earth). The rocky coasts are obvious in this map.

Fig 2

Distributions of weights of 217 E. mathaei samples (March to September, 2014) by gender. A, Total Wet Weight (40.38±20.59 g); B, Wet Weight of Gonads (3.13±2.72 g).

Fig 3

Different parameters of E.mathaei from March to September, 2014. Bars (left vertical axis): the operational sex ratio and sex ratio (Mean ± Standard Deviation). The different alphabet above numbers as a superscript show significant differences between months (p<0.05). Lines (right vertical axis): the total wet weights, the total dry weights; the gonad wet weights, and the gonad dry weights.

Fig 4

The relationship between total wet and dry weights.

Fig 5

The relationship between gonad and total weights. A, wet weights (females, gray solid line; males, gray dotted line; the two sex combinations: gray shaded zone); B, dry weights (females, gray solid line; males, gray dotted lines).

OSR
Primary Sex Ratio
GMC

Pakistan Journal of Zoology (Associated Journals)

June

Vol. 49, Iss. 3, Pages 761-1149

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