Effects of Primary Sex Ratio on Operational Sex Ratio in Sea Urchin, Echinometra mathaei
Mousa Keshavarz1*, Maryam Soyuf Jahromi2
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.
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).
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.
The relationship between total wet and dry weights.
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).