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Biochemical studies and energetics of the spiny lobster Panulirus homarus (Linnaeus. 1758)(TH 105)

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Relation http://eprints.cmfri.org.in/7184/
 
Title Biochemical studies and energetics of the spiny lobster Panulirus homarus (Linnaeus. 1758)(TH 105)
 
Creator Anil Kumar, P K
 
Subject Theses
Biochemical Study
Lobsters
 
Description The spiny lobster landings at Chennai Fisheries Harbour was 5532 kg between
February 1999 and January 2000, of which Panulirus homarus contributed 77.6%.
The tail muscle of the landed spiny lobsters yielded 312.3 kg, 41.4 kg, 6.4 kg and
8.1 x 106 kj of protein, lipid, carbohydrate and energy respectively. In P. homarus,
among the tissues studied (tail muscle, hepatopancreas and exoskeleton), the
hepatopancreas had the highest energy (24.6 ± 0.7 kj/g) and lipid contents (31 .6 ±
1.8%). There was no significant difference in the proximate composition and
energy contents between the juvenile (body weight: 50-100 g) and maturing (body
weight: 150-200 g) P. homarus. No specific trend in the seasonal variation was
observed in the proximate composition and energy content. In the experiment on
the effect of starvation, the control and bilaterally eyestalk ablated P. homarus
survived for 97.0 ± 5.3 and 48.3 ± 4.8 days respectively. The weight loss due to
starvation was 37.1% of initial wet weight in the control and 51.6% in the ablated
lobsters. The dry hepatosomatic index (HSld) decreased from 4.72% to 1.75%
(control) and 1.64% (ablated) in p, homarus at the time of death. All the
biochemical components decreased with starvation, with lipid as the major energy
source. The protein energy ratio changed from 0.0903 to 0.1342 and 0.1471 in the
hepatopancreas of the control and ablated groups respectively. For achieving the
maximum growth rate of P. homarus, the effect of four natural food viz., shrimp,
squid, clam and mussel on the food utilization parameters were studied. The
highest feeding rate (263.5 ± 20.3 jig/d) was observed in the mussel-fed group,
but the maximum conversion rate (23.9 ± 1.0 j/g/d excluding moult) was found in
the clam-fed group. The intermoult duration ranged from 42.7 ± 1.5 days (clamfed)
to 52.3 ± 2.5 days (squid-fed). The food conversion ratio (FCR) ranged
between 2.74 ± 0.17 (clam-fed) to 4.08 ± 0.06 (squid-fed). A major share (84.1 to
87.4%) of the consumed energy was partitioned for metabolism and 6.9 to 10.2 %
for growth.
 
Date 2002
 
Type Thesis
NonPeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/7184/1/TH-105_Ani.pdf
Anil Kumar, P K (2002) Biochemical studies and energetics of the spiny lobster Panulirus homarus (Linnaeus. 1758)(TH 105). ["eprint_fieldopt_thesis_type_phd" not defined] thesis, Central Institute of Fisheries Education, Versova.