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Population Dynamics of Echinometra mathaei (Echinoidea: Echinodermata) Found on Buleji, Pakistan, North Arabian Sea

Population Dynamics of Echinometra mathaei (Echinoidea: Echinodermata) Found on Buleji, Pakistan, North Arabian Sea

Saima Siddique1* and Zarrien Ayub2

1Marine Reference collection and Resource Centre, University of Karachi, Karachi-75270, Pakistan
2Centre of Excellence in Marine Biology, University of Karachi, Karachi-75270, Pakistan

* Corresponding author: saima_siddiq@hotmail.com

Fig. 1.

Map showing the collection site. Scale bar 2 km. Inset shows the coastline of Pakistan.

Fig. 2.

Relationships between total wet weight -test diameter; total wet weight-test height and test height and test diameter for sea urchin Echinometra mathaei during study period (April 2011-November 2012) at Buleji.

Fig. 3.

Temporal variability of the morphometric characters of Echinometra mathaei population from April 2011 to November 2012 at Buleji.

Fig. 4.

Modal progression analysis of Echinometra mathaei size-frequency data (thick line) based on Battacharya’s method at Buleji.

Fig. 5.

Length-frequency distribution output from FiSAT with superimposed growth curve for Echinometra mathaei at Buleji. D∞ = 8.2 cm (test diameter), K = 0.48 year-1.

Fig. 6.

Von Bertalanffy population model estimates of size-at-age for Echinometra mathaei at Buleji.

Pakistan Journal of Zoology

June

Vol. 53, Iss. 3, Pages 801-1200

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