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Food and feeding of the blue swimmer crab, Portunus pelagicus (Linnaeus, 1758) (Decapoda, brachyura) along the Coast of Mandapam, Tamil Nadu, India

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Title Food and feeding of the blue swimmer crab, Portunus pelagicus (Linnaeus, 1758) (Decapoda, brachyura) along the Coast of Mandapam, Tamil Nadu, India
Not Available
 
Creator Josileen,Jose
 
Subject Food
feeding
blue swimmer crab
Portunus pelagicus
Coast Mandapam
Tamil Nadu
India
 
Description Not Available
Food habits of the blue swimmer crab, Portunus pelagicus were investigated using specimens
collected from trawl catches in the Mandapam region, Tamil Nadu, along the east coast of India
(9◦20-25_N 79 ◦ 5-10_E), during the period January to December, 1999. The stomach contents
of 452 crabs, ranging from 61 to 180 mm carapace width, were analysed. Their diet included
crustaceans, molluscs, fishes, unidentifiable matter, and debris. In adult crabs, crustaceans constituted
the dominant food source and these were present in 78.43% of the stomachs analysed. The
stomach contents of juveniles and sub-adults were dominated by debris. There was no significant
difference between sexes in the frequency of occurrence of food items or in their “percentage points”
[= the (virtual) percentual contribution to the fullness of a 100% full stomach]. However, there
was a difference between the stomachs of ovigerous and non-ovigerous females. There were also
significant differences in the preference for food items in the different size groups of the crab. The
results collected from the present study showed that P. pelagicus exhibits, in this region at least, a
clear preference for crustaceans.
Not Available
 
Date 2021-09-16T06:09:48Z
2021-09-16T06:09:48Z
2011
 
Type Article
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/62803
 
Language English
 
Relation Not Available
 
Publisher Kluwer