International Journal of Fisheries and Aquatic Studies
2020, Vol. 8, Issue 3, Part G
Formation of annual growth layers in the Southern Indian freshwater fish Labeo rohita (Hamilton, 1822); (Teleostei: Cyprinidae)
Author(s): Suresh M Kumbar, Swapnali B Lad and Jyoti A Kumbar
Abstract: Fingerlings of the freshwater fish rohu
Labeo rohita were maintained in the farm pond (size 33 x 33 x 3 m) at Gavhan village, district Sangli, Maharashtra, India to know the periodicity of formation of growth marks in the calcified materials. Approximately 1.0 – 1.2 cm body sized fingerlings were released on May 2015 and maintained for a year in the fish farm pond under natural conditions. All fish were collected back in July 2016 by using cast net with the help of local fisherman. Among the collection, 100 fish with different body size (range 18 – 39 cm) were selected for age determination study. There was a significant increase in body mass and body size in each fish. All these fish showed one line of arrested growth each in scales, otoliths and vertebrae sections, suggesting that the formation of growth marks is annual in this fish.
Pages: 574-576 | 448 Views 80 DownloadsDownload Full Article: Click Here
How to cite this article:
Suresh M Kumbar, Swapnali B Lad, Jyoti A Kumbar. Formation of annual growth layers in the Southern Indian freshwater fish Labeo rohita (Hamilton, 1822); (Teleostei: Cyprinidae). Int J Fish Aquat Stud 2020;8(3):574-576.
