Pre- and post-spawning condition descriptors for the Indian major carp, Cirrhinus mrigala
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Keywords:Cirrhinus mrigala, Length-weight relationships, Spawning condition, Weight-weight relationships
Mrigal or Cirrhinus mrigala (Hamilton 1822) is one of the important aquaculture species in India. During 2017, mrigal contributed 5.7% to the aquaculture production of India. The present study was undertaken to describe the hatchery-level pre- and post-spawning condition, i.e. weight changes in the length-weight relationships (LWRs) and the weight-weight relationships (WWRs) associated with the two phases for the mrigal males and females used as broodstock from a commercial IMC hatchery. For the 18 pairs of individuals sampled, the TL (total length) ranged from 42–55 cm and 39–54 cm, and the BW (body weight) from 0.83–1.46 kg and 0.52–1.35 kg respectively for males and females. The GSI was recorded at 10.5% for males and 20.4% for females. The pre- and post-pawning weights differed significantly in both sexes based on paired t-test. Trends in the LWR and weight-weight slopes have been discussed in the article.
Aga A F, Dhawan A and Ansal M D. 2017. Efficacy of feeding frequency, feeding rates and formulated diets on growth and survival of rohu Labeo rohita brood stock under intensive rearing. International Journal of Fisheries and Aquatic Studies 5(1): 85–89.
Falster D S, Warton D I and Wright I J. 2006. Smart: Standardized Mayor Axis Test and Routines, v 2.0. http://www.bio.mq.edu. au/ecology/SMATR/.
FAO (2019, August 3). FAO Fisheries and Aquaculture Information and Statistics Branch. Retrieved from http:// www.fao.org/figis/servlet/TabLandArea
Froese R. 2006. Cube law, condition factor and weight–length relationships: history, meta‐analysis and recommendations. Journal of Applied Ichthyology 22(4): 241–53. DOI: https://doi.org/10.1111/j.1439-0426.2006.00805.x
Hanumantharao L. 1971. Studies on the biology of Cirrhinus mrigala (Ham.) of the River Godavari. Indian Journal of Fisheries 21: 303–22.
Iqbal Z and Kausar S. 2009. Fecundity of Cirrhinus mrigala (Hamilton) reared in earthen ponds. Punjab University Journal of Zoology 24: 31–39.
Prasad S, Prabhakar C S and Kumar A. 2018. Assessment of gonadosomatic index and maturation of an Indian major carp Cirrhinus mrigala (Ham.). International Journal of Chemical Studies SP4: 203–06.
Rokade P, Ganeshwade R M and Somwane S R. 2006. A comparative account on the induced breeding of major carp Cirrhina mrigala by pituitary extract and Ovaprim. Journal of Environmental Biology 27(2): 309–10.
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