Pakistan Research Repository

POPULATION STRUCTURE AND BEHAVIORAL OF ECHIS CARINATUS SOCHUREKI IN SINDH (MAKLI, THATTA)

Rehan, Hafizur (1993) POPULATION STRUCTURE AND BEHAVIORAL OF ECHIS CARINATUS SOCHUREKI IN SINDH (MAKLI, THATTA). PhD thesis, University of Karachi, Karachi.

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Abstract

The saw-scaled viper population studied at Makli, Sindh province, is morphologically typical to that called Echis carinatus sochureki. This is based on both scale and colour patterns. Mean SVL s established as 420.9mm. Females are significantly larger (mean 449.2 mm) than males (mean 347.5 mm) Males have a proportionately longer tail than females. Mean weight of adult males is 48.8 g, and that for females is 82.1g In saw-scaled vipers that liver comprises about 9 percent of the total weight of adults. However, is size varies significantly through the year. Visceral fat deposits also vary seasonally in both exes, showing an annual pattern of growth and regression which can also be linked to the annual reproductive cycle-particularly in adult females. This study suggests that the annual accumulation of fat in both males and females of saw-scaled viper during one year is probably utilized during the early and middle part of the next year, for three purposes; reproduction during fall, for hibernation, and for sustenance during the typically generally widespread and important period of food shortage or these snakes after they emerge from their period of winter torpidity The species of viper produces living young. It breeds in fall and bears its young during ** season preceding the first monsoon. The size at which individuals of this species are mature at ** akli is SLV 249mm for females. The average sex ration demonstrated for this species is more positively skewed to the females than most other vipers studied so far. This study indicates that there is great variation in the kinds of prey categories taken, basically as a class level. Scorpions, Centipedes and mice are the most common prey types eaten. Her prey species I have reported in this study are cockroaches, beetles, lizards, frogs and birds

Item Type:Thesis (PhD)
Uncontrolled Keywords:echis carinatus sochureki, vipers, saw-scaled viper, snake
Subjects:Biological & Medical Sciences (c) > Biological Sciences(c1) > Paleo-zoology(c1.10)
ID Code:1091
Deposited By:Mr. Muhammad Asif
Deposited On:20 Feb 2007
Last Modified:04 Oct 2007 21:04

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