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Allometric variations and condition factor in <i style="mso-bidi-font-style:normal">Cellana karachiensis </i> (Winckworth, 1930) found at two adjacent rocky coasts of Karachi, Pakistan

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Title Allometric variations and condition factor in Cellana karachiensis (Winckworth, 1930) found at two adjacent rocky coasts of Karachi, Pakistan
 
Creator Zafar, Fatima Hayat Shaheen
Ayub, Zarrien
 
Subject Length-weight
Condition factor
Cellana karachiensis
Karachi
Northern Arabian Sea
 
Description 794-799
Length-length and length-weight
relationship and condition factor is described for Cellana karachiensis (Winckworth,
1930) collected between November 2007 and April 2009 from rocky shores of
Buleji and Paradise Point. Maximum total length registered for this species was
50 mm at Buleji and 40 mm at Paradise Point. Shell length-shell width, shell
length-shell height and shell width-shell height showed strong relationship
between the variables. Shell length-shell height relationships for C. karachiensis showed a positive
allometry, which is common in high-shore limpets in order to lower the rate of
water loss in these animals. Value of b,
the value of b > 3.0 for shell length and weight relationship
indicated a positive allometric growth in C. karachiensis at both sites.
Analysis of variance showed significant
difference between the value of b during different seasons at Buleji and
Paradise Point. Condition factor (CF) calculated for C. karachiensis ranged between 1.007 to 1.108 at Buleji and 1.008 to 1.064
at Paradise Point. Analysis of variance showed no significant difference
between CF values in different seasons at two sites. A similar condition factor
in different seasons showed that food availability remained constant throughout
the year in coastal waters of Pakistan.
 
Date 2013-12-13T12:41:04Z
2013-12-13T12:41:04Z
2013-10
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://hdl.handle.net/123456789/24807
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.42(6) [October 2013]