Record Details

Stock assessment of the pharaoh cuttlefish Sepia pharaonis

CMFRI Repository

View Archive Info
 
 
Field Value
 
Relation http://eprints.cmfri.org.in/253/
 
Title Stock assessment of the pharaoh cuttlefish Sepia pharaonis
 
Creator Nair, K Prabhakaran
Srinath, M
Meiyappan, M M
Rao, K Satyanarayana
Sarvesan, R
Vidyasagar, Kuber
Sundaram, K S
Rao, G Syda
Lipton, A P
Natarajan, P
Radhakrishnan, G
Mohamed, K S
Narasimham, K A
Balan, K
Kripa, V
Sathianandan, T V
 
Subject Stock Assessment
Cephalopods
 
Description The data collected during 1979 to 1989 at different centres on both the coasts of India, indicate
that the landings of the cuttlefish Sepia pharaonis Ehrenberg, increased by 3 times (11,000 t in 1989).
Over 84% was from the west coast, with Maharashtra accounting for 44% and Kerala 33%. About 87%
of cuttlefish is obtained in trawl net as by-catch, while a small portion is taken in localized hand-jigging
operation. On the east coast over 63% of the total catch is during the second and third quarters of the
year (April-September). On the west coast the fourth quarter is the most productive (50%), the second
quarter being the least. The natural mortality (M) ranges from 1.08 to 1.8 iot males and 1.23 to 2.05
for females on the east coast; on the west coast the corresponding values were 1.41-2.35 and 1.5 - 2.5.
On both the coasts the M for females was higher than for males. On the east coast the maximum values
of fishing mortality ('F' in the range 1.65-2.9 in male cuttlefish) was observed at a size of 170 mm;
for females it is at 190 mm in the range 1.95 - 2.8. On the west coast it is at a uniform size of 190
mm in the range 1.27 - 2.14 in males and 1.33 -1.66 in females. The standing stock of male cuttlefish
is higher than that of females on the east coast, while the reverse is true for the west coast. Using
Thompson and Bell long-term forecast analysis the MSY and mean biomass at different M/K levels are
also estimated for males and females separately for each coast. Tlie present level of exploitation is
considered to be optimal on the east coast, whereas on the west coast there is scope for increase.
 
Publisher CMFRI/COCHIN
 
Date 1993
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/253/1/Article_09.pdf
Nair, K Prabhakaran and Srinath, M and Meiyappan, M M and Rao, K Satyanarayana and Sarvesan, R and Vidyasagar, Kuber and Sundaram, K S and Rao, G Syda and Lipton, A P and Natarajan, P and Radhakrishnan, G and Mohamed, K S and Narasimham, K A and Balan, K and Kripa, V and Sathianandan, T V (1993) Stock assessment of the pharaoh cuttlefish Sepia pharaonis. Indian Journal of Fisheries, 40 (1&2). pp. 85-94.