Int. J. of Aquatic Science 2008-8019 3 1 2012 01 01 Effect of stocking density on growth and survival rate of Spiny Lobster (Panulirus polyphagus) in cage culture system 3 14 93746 EN Yogesh Solanki K.L. Jetani Sajid I. Khan Anil S. Kotiya Nayan P. Makawana Mohd Ashraf Rather Journal Article 2019 09 27 In the present study, cage culture of spiny Lobster in 124days was carried out and effect of different stocking density on growth and survival was find out. At present there are no commercially feasible lobster farming practices anywhere in the world. Maximum growth was obtained in treatment with 20 lobsters/cage with weight gain of 48.95% followed by 45.65% and 42.45 % weight in a treatment with 10 lobsters/cage and 30 lobsters/cage respectively. Survivability recorded from 30 lobsters/cage was observed to be 24.66% whereas it was 21% in 20 lobsters/cage and 0 % in 10 lobsters/cage, this was affected due to low temperature during winter season. Maximum FCR recorded during experiment were 39:1, 35:1 in treatment 30 and 20 numbers stocking density respectively. Among all treatment better growth in term of SGR recorded was from 20 lobsters/cage followed by 30 lobsters/cage and 10 lobsters/cage stocking density and it was 0.38, 0.35 and 0.31 respectively.

Int. J. of Aquatic Science 2008-8019 3 1 2012 01 01 Hepatic bioaccumulation of cadmium in the crowned bullfrog, Hoplobatrachus occipitalis and flat backed toad, Bufo maculatus 15 22 93747 EN Lawrence Ikechukwu Ezemonye Alex Ajeh Enuneku Journal Article 2019 09 27 The hepatic bioaccumulation of cadmium in Hoplobatrachus occipitalis and Bufo maculatus were assessed for 14 and 28 days respectively. The amphibians were exposed to sub lethal cadmium concentrations of 0.25, 0.50, 1.00 and 2.00 mg/l. Bioaccumulation in H. occipitalis and B. maculatus increased significantly (p<0.05) in both periods of exposures. There was no significant difference in bioaccumulation between the 14 and 28 days exposures. There was also no significant difference in the bioaccumulation of cadmium between two amphibian species. The study suggested that the release of cadmium into the environment could possibly affect the well-being of amphibians as well as resulting in further decline of these very sensitive organisms that contribute significantly to the food web. There is therefore the need to protect amphibians from habitat alteration due to cadmiumpollution with a view to sustaining the rich biodiversity in the Nigerian Niger Delta ecological zone.

Int. J. of Aquatic Science 2008-8019 3 1 2012 01 01 The effect if sucrose on sperm quality of Osphronemus goramy two days post-crypreservation 23 28 93748 EN Abi Abinawanto Khairani Nurman Retno Lestari Journal Article 2019 09 27 Our previous study showed the optimum concentration of DMSO combined with 189M of extender to maintain spermatozoa quality of Osphronemus goramy, 24 hours post- cryopreservation. The present study was conducted to investigate the effect of various concentrations of sucrose on sperm quality of Osphronemus goramy 48 hours post- cryopreservation. Mature males Osphronemus goramy obtained from a private commercial hatchery were brought into laboratory. The ejaculates from a total of three males were collected by hand stripping. The ejaculated semen were diluted with the solvent (sucrose-fish ringer + 10% methanol; 1: 9). Sucrose concentrations which are used in this study were: 0%, 0.1%, 0.3%, 0.5%, 0.7%, and 0.9%, respectively. Samples were then equilibrated at 4°C for 10 minutes, and were freezed at -34°C for 48 hours. Thawing was carried out at 40°C for 1—2 min. Based on Anova test, there were significant effect (P<0.05) of various concentrations of sucrose on post-thawed sperm motility, viability, and abnormality, compared to control (0% of sucrose). According to the Tukey test, the concentration of 0.5% of sucrose showed significant difference (P<0.01) on post-thawed motility, viability, and abnormality, respectively. Zero point five percent of sucrose showed the highest post-thawed sperm motility (81.62±4.19) %, and post-thawed sperm viability (82.17±2.56) %, and the lowest post-thawed abnormality (12.5±1.52) %. Our finding showed the optimum concentration of sucrose as extender.

Int. J. of Aquatic Science 2008-8019 3 1 2012 01 01 Length weight relationship and relative condition factor of Schizopyge esocinus (Heckel, 1838) from Jhelum River, Kashmir 29 36 93749 EN Shabir Ahmad Dar A. M. Najar M. H. Balkhi Mohd Ashraf Rather Rupam Sharma Journal Article 2019 09 27 The length-weight relationship of Schizopyge esocinus were calculated for males, females. The relationship was analyzed using the formula W= a Lb which was further transformed into Log W = a+b logL. A total of 582 specimens comprising 277 males, 305 females with different size groups. The equation obtained for males was; log W = - 4.1567 + 2.897 logL; for females: logW = - 4.5089 + 2.8618 logL; The regression coefficients between males and females did not show any significant difference while significant difference could be noticed between males and between females (p < 0.01). Studies on relative condition factor (Kn) of Schizopyge esocinus revealed that the fluctuations in 'Kn' values can be attributed to spawning cycle as well as feeding intensity.

Int. J. of Aquatic Science 2008-8019 3 1 2012 01 01 Systematic study of epiphytic algal after restoration of Al-Hawizah marshes, southern of Iraq 37 57 93750 EN Fikrat M. Hassan Rafia A. Hadi Thaer I. Kassim Jinan S. Al-Hassany Journal Article 2019 09 27 A study of epiphytic algae in restored marshes in Mesopotamian marshes, southern Iraq was carried out seasonally from winter 2008 to spring 2009. Four sites were selected in Al- Hawizah marshes (Um El-Wared, Um El-Na'aj, Al-Adaim and Soda north). Samples of epiphytic algae were collected from four species of host hydrophytes (Phragmites australis Trin ex, Typha domengensis Pers, Ceratophyllum demersum L. and Potamogeton pectinatus L.). In this study, five classes, twenty seven genera and fifty-five species of epiphytic algae were described. Seven species and two varieties of identified epiphytic algae in this study were new records to the flora of algae in Iraq for the first time.

Int. J. of Aquatic Science 2008-8019 3 1 2012 01 01 Environmental conditions of a drainage channel inhabited by an invasive species Melanoides tuberculatus (Muller, 1774) in southwestern, Nigeria 58 70 93751 EN Bolaji A. Dunsin Clement A. Edokpayi Muyideen O. Lawal Journal Article 2019 09 27 Melanoides tuberculatus (Muller, 1774) an invasive species that serves as vector transmitting several diseases causing parasites was found inhabiting a drainage channel in University of Lagos. The prevailing environmental conditions of the drainage channel were studied between February and July 2006. Standard methods were used to collect and analyze samples. pH ranged from 6.30 to 7.70. The Air and water temperatures ranged between 29.37±2.29 ºc and 28.62±2.00 ºc respectively. Conductivity, total dissolved solid (TDS), salinity, dissolved oxygen, biochemical oxygen demand, nitrate, copper, phosphate and sulphate ranged between 37.17±13.60 µscm-1, 18.50±6.75 ppm, 0.04±0.05‰, 4.28±0.34 ppm, 6.17±3.19 ppm, 1.03±0.27 ppm, 0.03±0.05 ppm, 0.20±0.36 ppm and 10.17±5.38 ppm respectively. pH significantly correlated with water temperature (r=0.891, P < 0.05); TDS significantly correlated with nitrate (r=0.845, P < 0.05) and conductivity (r=1.000, P < 0.05); nitrate correlated significantly with conductivity (r=0.834, P < 0.05) and copper correlated significantly with phosphate (r=0.987, P < 0.05). The observed environmental factors that favour colonization of M. tuberculatus in the drainage channel suggest its possible spread in several water bodies in Nigeria.

Int. J. of Aquatic Science 2008-8019 3 1 2012 01 01 Effects of partial replacement of fishmeal in the diet by mulberry leaf meal on growth performance and digestive enzyme activities of Indian minor carp Labeo bata 72 83 93752 EN Kausik Mondal Anilava Kaviraj Pratap Kumar Mukhopadhyay Journal Article 2019 09 27 Fermented mulberry leaf (Morus indica) meal (MLM) was used as the main protein supplement to partially replace fishmeal (FM), mustard oil cake (MOC) and rice bran (RB) in the formulation of four experimental diets for the Indian minor carp Labeo bata. The four diets contained 0, 65, 75 and 80% MLM thereby replacing respectively 0, 50, 75 and 80% of FM, 0, 64, 64 and 74 % of MOC and 0, 77, 90 and 90% of RB. The diet containing 65% MLM (replacing 50% of FM, 64% of MOC and 77% of RB) appeared to be best diet in terms of growth, nutrient deposition and digestive enzyme activities of the L. bata fingerlings. It was concluded that inclusion of MLM as feedstuff to replace fishmeal in the formulation of diet of L. bata was a viable option provided crude fibre content of the diet did not exceed 5.63% of the dry weight of the diet.