The aim of the study was to investigate the physical difference in biochemical characteristics of spermatological and seminal plasma and also ultrastructure of spermatozoa in six carp species, viz. catla, Catla catla, rohu, Labeo rohita, kalbasu, Labeo calbasu, mrigal, Cirrhinus mrigala, silver carp, Hypophthalmichthys molitrix and grass carp, Ctenopharyngodon idella. Semen yield from different...

The present work was conducted to isolate and identify different parasites from Indian Major Carp (IMC) Catla catla. During the study period the severity of infection and Parasitic Frequency Index (PFI, %) were also estimated in terms of months, seasons and length groups of fishes. For the investigative purpose different districts of West Bengal were selected considering the potential of fisher...

Mosquito control with the use of insecticides is faced with the challenges of insecticide resistance in disease vectors, community refusal, their high cost, operational difficulties, and environmental concern. In view of this, integrated vector control strategies with the use of larvivorous fishes such as Guppy (Poecilia reticulata) and Gambusia (G. affinis) as biological control agents were us...

In the present study short-term (96 hr) toxicity of mercury in relation to water hardness (270 and 560 mg/l) and temperature (16 degrees C and 35 degrees C) to the fingerlings of Indian major carps, i.e. catla, rohu and mrigal has been evaluated using static bioassay. The LC5o indicates that both water hardness and temperature played significant role in mercury toxicity. The test fishes were fo...

An investigation was carried out to know the induced breeding techniques of some firewater fish species such as rui (Labeo rohita), catla (Catla catla), silver carp (Hypophthalmichthys molitrix), grass (Ctenopharyngodon idella), common (Cyprinus carpio), bighead nobilis), sharpunti (Puntius sarana) and bata bata) at Ma Fatima Fish Hatchery in Chanchra, Jashore, Bangladesh. The cost-benefit anal...

An experiment was conducted at Dumurpota of Satkhira district for six months to compare the production performance prawn (Macrobrachium rosenbergii) under all-male and mixed sex culture systems with carps (Labeo rohita Catla catla). A total experimental ghers were used two treatments in triplicates: (T1) (T2). In both treatments, prawns stocked a rate 10,000 PL/ha while C. catla L. each 650 fin...

An experiment was conducted to determine the growth performance of two Indian Major Carps Catla catla, and Cirrhinus mrigala fingerlings for period of 40 days. Nine experimental groups fed commercial pellet diet incorporated with three types of nutritional supplements (Gram positive lactobacil probiotic, Parry’s Spirulina and Vitamin C – Ascorbic acid) at different concentrations (2 %, 4 %, & 8...

Histopathological studies were conducted on carp fingerlings of Labeo rohita, Catla catla and Cirrhinus cirrhosus during October 2003 to May 2004 from fish farms of Mymensingh area. Monthly samplings were done with 10 fish from each species with the help of seine net. Skin, muscle, gill and liver were collected, processed and stained in Haematoxylin and Eosin. Histologically carp fingerlings of...

Lipases (E.C. 3.1.1.3) can be broadly defined as enzymes that catalyze the hydrolysis of ester bonds in substrates such as vitamin esters, phospholipids, triglycerides (TGs) and cholesteryl esters [1]. Interest in lipases has been increasing in the past few years because of the actual and potential uses of this enzyme in applications like hydrolysis of fats and oils, organic synthesis, modifica...