Record Details

<span style="font-size:15.0pt;line-height: 115%;font-family:"Times New Roman","serif";mso-fareast-font-family:Calibri; mso-ansi-language:EN-US;mso-fareast-language:EN-US;mso-bidi-language:AR-SA" lang="EN-US">Reproductive biology of <i style="mso-bidi-font-style:normal">Macrobrachium lar</i> <span style="mso-bidi-font-style:italic">(fabricius, 1798) in Andaman Islands</span></span>

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Title Reproductive biology of Macrobrachium lar (fabricius, 1798) in Andaman Islands
 
Creator Sethi, S. N.
Ram, Nagesh
Venkatesan, V.
 
Subject Fresh water prawn
Macrobrachium lar
Andaman Islands
Sex ratio
Reproductive biology
 
Description 2269-2276
Reproductive
biology of the Monkey river prawn (Macrobrachium lar) was studied in the
Rangat river, Andaman Islands, during 2007 to
2009, with the aim of determining the male: female ratio, maturity cycle,
spawning seasons and the fecundity in those ecosystems. During 18 months
period, 2078 individuals were collected, with a male: female ratio (M/F) of 1:
2.84.   Total number of individuals
caught per month ranged 65 -172. Males were generally larger than females.
Percentage occurrence of reproducing and non-reproducing females, ovigerous
females, seasonal occurrence of maturity stages, and maturity indices (GSI and
HSI) exhibited that M. lar breeds twice in a year with two breeding
peaks  (June and November) every
year.  Highest reproduction indices (GSI)
in female were observed in November (4.0 ± 0.07), December (3.88 ± 0.28), May
(3.63 ± 0.08), and June (3.88 ± 0.16). In both the sexes, HSI showed inversely
proportional relationships with GSI. With respect to average fecundity (F) by
length classes, the lowest and highest number of eggs observed was 3090 and
8177, respectively. As for fecundity by weight classes, the lowest number of
eggs observed was 4069 and the highest, 8543. 
Overall mean fecundity irrespective of the length and weight classes was
5402 (± 772.35) eggs per female. 
Diameter of non-eyed and eyed eggs ranged between 0.32 mm to 0.50 mm and
0.52 mm to 0.68 mm respectively.
 
Date 2016-06-30T08:31:14Z
2016-06-30T08:31:14Z
2014-12
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://hdl.handle.net/123456789/34598
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.43(12) [December 2014]