International Journal of Aquaculture, 2017, Vol.7, No.10, 71-78
76
and fasted coho salmon, 7-12.5 ng/ml (Shimizu et al., 2009), male lingcod
Ophiodon elongates
, 3.8–34.7 ng/ml
and female lingcod, 3.8–35.3 ng/ml (Andrews et al., 2011), pink salmon
O. gorbuscha
, 28 ng/ml; chum salmon,
O.
keta
33 ng/ml; chinook salmon
O. tshawytscha
, 48 ng/ml; sockeye salmon
O. nerka
, 84 ng/ml; coho salmon
O.
kisutch
, 120 ng/ml (Myers et al., 1998). The total plasma IGF-1 levels (5-32 ng/ml) of Atlantic cod
Gadus morhua
(Davie et al., 2007) and of tilapia
O. mossambicus
(140 ng/ml; Kajimura et al., 2003) were also higher than those
of the IMCs. The magnitude of difference in IGF-1 levels of carps and other fish species was in the order of 2-200.
Available evidence suggested that serum IGF-1 levels in teleosts positively correlate with growth rates of
individuals and could be used to evaluate the growth performance for aquaculture and stock assessment
(Silverstein et al., 2000; Beckman et al., 2004a; Dyer et al., 2004; Li et al., 2004; Picha et al., 2009; 2012). The
results on serum IGF-1 levels of IMCs also provide supportive evidence to the above earlier reports on several
other species as indicator of fish growth.
In general, the present study documented the serum IGF-1 levels in IMCs, the most preferred fish of Indian
freshwater aquaculture. It recorded insignificant variations in the serum IGF-1 levels of
C. catla
and
L. rohita
reared in captive, normal and sewage-fed pond conditions. The results suggested that both
C. catla
and
L. rohita
are the ideal species for culture under the sewage-fed aquaculture system. The culture of bottom dwelling
C.
mrigala
must be discouraged in sewage-fed farm as revealed by the serum IGF-1 levels. The results further
suggested that serum IGF-1 levels can serve as growth indicator of carps. It may also be an effective indicator of
the differences in growth of certain carps.
Conflict of interest
The authors declare that there is no conflict of interest.
Acknowledgements
The research work was supported by the Indian Council of Agricultural Research, Government of India, New Delhi under the Niche
Area of Excellence program. The authors thank the Vice-Chancellor, West Bengal University of Animal and Fishery Sciences,
Kolkata for providing necessary infrastructure facility to carry out the work.
Authors’ contributions
TJA contributed to conception and design, analysis and interpretation of results, and write-up of the manuscript. FH and AD
contributed to sample collection and analysis as well as acquisition of data. Statistical analysis and interpretation of results were done
by TSN. All the authors read and approved the final manuscript.
References
Abbas, S., Ahmed, I., Salim, M. and Rehman, K., 2010, Comparative effects of fertilization and supplementary feed on growth performance of three fish
species, International Journal of Agriculture and Biology, 12: 276–280
Andrews, K.S., Beckman, B.R., Beaudreau, A.H., Larsen, D.A., Williams, G.D. and Levin, P.S., 2011, Suitability of insulin-like growth factor 1 (IGF-1) as a
measure of relative growth rates in lingcod, Marine and Coastal Fisheries: Dynamics, Management, and Ecosystem Science, 3: 250-260
Anon, 2015, Handbook of fisheries statistics 2014-15, Department of Fisheries, Directorate of Fisheries, Government of West Bengal, Kolkata
APHA/AWWA/WEF, 2005, Standard methods for the examination of water and waste water, 20th edition, American Public Health Association, American
Water Works Association and Water Environment Federation, Washington, USA.
Beckman, B.R., Shimizu, M., Gadberry, B.A. and Cooper, K.A., 2004a, Response of the somatotropic axis of juvenile coho salmon to alterations in plane of
nutrition with an analysis of the relationships among growth rate and circulating IGF-1 and 41 kDa IGFBP, General and Comparative Endocrinology, 135:
334–344
PMid:14723885
Beckman, B.R., Shimizu, M., Gadberry, B.A. and Cooper, K.A., 2004b, The effect of temperature change on the relations among plasma IGF-1, 41-kDa IGFBP
and growth rate in post-smolt coho salmon, Aquaculture, 241: 601–619
Carlander, K.D., 1969, Handbook of freshwater fishery biology, Iowa State University Press, Iowa
PMid:4976763
Davie, A., Porter, M.J.R., Bromage, N.R. and Migaud, H., 2007, The role of seasonally altering photoperiod in regulating physiology in Atlantic cod (
Gadus
morhua
). Part II. Somatic growth, Canadian Journal of Fisheries and Aquatic Sciences, 64: 98-112
