Open Access Original Research Article

Effect of Adding BIOM-S Probiotic on Survival and Growth Rate of Nile Tilapia (Oreochromis niloticus)

Yuli Andriani, Taufik Ikhsan Kamil, Irfan Zidni, Iskandar ., Titin Herawati

Asian Journal of Fisheries and Aquatic Research, Page 1-6
DOI: 10.9734/ajfar/2018/v2i226120

This research was conducted in May-June 2017 in Hatchery Indoor Maksudi, Astanaanyar, Bandung. This research aims to find out the optimal BIOM-S probiotic on culture media of Nile tilapia, and the influence to survival rate and growth rate of Nile tilapia. This research was conducted by an experiment using Completely Randomized Design (CRD). This research consisted of five treatments and three replications, which were treatment A (control), treatment B (giving probiotic with 0,6 ml/L concentration), treatment C (giving probiotic with 0,8 ml/L concentration), treatment D (giving probiotic with ,0 ml/L concentration), and treatment E (giving probiotic with 1,2 ml/L concentration). The parameters in this research were the survival rate and specific growth rate. Survival rate and specific growth rate used data analysis with F test to find out the influence of each treatment. The concentration of optimal probiotic based on the results was 0.8 ml/L, it produced the highest survival rate for 81.67% and the specific growth rate for 0.039%.

Open Access Original Research Article

Bioaccumulation of Heavy Metals and Implications Associated with Consumption of the Thinlip Mullet (Liza ramada) Collected from Sites of Varying Salinity

Mokhtar S. Beheary, Fatma A. El-Matary

Asian Journal of Fisheries and Aquatic Research, Page 1-15
DOI: 10.9734/ajfar/2018/v2i226124

The bioaccumulation of heavy metals (Fe, Cu, Zn, Mn, Pb, Cd, Co, and Ni) were assessed in tissues (gills, liver, and muscles) of the thinlip mullet (Liza ramada) collected from three aquatic habitats varying in salinity in Egypt (freshwater, brackish, and offshore sites). In the freshwater site, metals accumulate in order of gills > liver > mussels with exception to Cu, Zn and Ni (liver > gills > mussels). In the brackish site, the order of metal accumulation for Fe, Cu, Zn, and Co were: liver > gills > mussels, and for Ni, Pb, and Mn were: gills > liver > mussels, while; Cd accumulated in order of mussels > gills > liver. In offshore site, Metals accumulates in order of: liver > gills > mussels except for Mn and Ni (gills > liver > mussels) and Cd (mussels > gills > liver).The overall metal concentrations for the three sites were ranked in the order of Fe > Mn > Zn > Cu > Pb > Cd > Co > Ni. There were significant differences between sites for Cu and Co, and between fish organs for Pb, Cd, Co, and Ni. Strong positive correlations were found between Fe and Zn (P<0.001), Fe and Pb (P<0.001), Fe and Mn (r= P<0.001), Mn and Ni (P<0.001), and Cd and Ni (r= P<0.01). Significant positive correlations (p<0.05) were observed between Zn with Co and Fe with Ni. Target hazard quotient (THQ) values for Pb, Cd, Co, and Ni were higher than 1 for the three sites, which suggests that adverse health effects might arise from the consumption of these fish. The estimated daily intake (EDI) values for Ni and Cd were higher than the recommended levels, indicating health effects; however, the values for rest of the metals were lower than the recommended EDI levels, suggesting that they are unlikely to pose a health risk.

Open Access Original Research Article

Aqua Drugs and Chemicals Used in Aquaculture in Jamalpur Sadar Upazila of Bangladesh

Md. Ausraful Anwar, M. Mamnur Rashid, Md. Abu Hena Mostofa Kamal, Md. Mejanur Rahman, Debasish Pandit

Asian Journal of Fisheries and Aquatic Research, Page 1-13
DOI: 10.9734/ajfar/2018/v2i226126

The present study was conducted to know the present status of use of commercial aqua drugs and chemicals and their impact on fish health management in Jamalpur sadar upazila (sub-district). A questionnaire survey was conducted for a period of seven months from December 2013 to June 2014 from nineteen small scale fish farms, seven commercial fish farms, eight fish hatcheries and seven chemical retailers. Five categories of aqua drugs and chemicals were identified and noted in the study area. Those drugs and chemicals were produced by the following seven pharmaceutical companies: Square Pharmaceuticals Ltd., Novarties Animal Health, ACI Animal Health, Fish Tech BD Ltd., Acme Laboratories, Reneta, and Eon Animal Health. Different types of diseases such as edwardsiellosis, EUS (epizotic ulcerative syndrome), red spot and different parasitic diseases were found to occur in pangus (Pangasius hypophthalmus), tilapia (Oreochromis nilotica), sharputi (Puntius sarana), rui (Labeo rohita), mrigal (Cirrhinus mrigala), Thai koi (Anabas testudineus), shing (Heteropneustes fossilis) and silver carp (Hypophthalmicthys molitrix). Geotox, JV Zeolite, Aquakleen and Biomin Aquaboost were used for water quality management; Oxyflow, Bio Care and Oxylife to improve dissolve oxygen level; Megavit Aqua, Aqua Boost, Aquamin, Acimix Super-fish, Square Aquamix and Vitax-C as growth promoter; Oxysentin 20%, Captor, Aquamycine and Renamycin soluble powder as antibiotics; Hepaprotect-Aqua, Timsen, Virex, Polgard Plus as disinfectant; lime, salt, formalin, potash and malachite green were used against fish diseases. Susceptible months of disease outbreak in the study area were November to February. The recovery of fish diseases was found from 50% to 95% in Jamalpur region. Farmers’ poor understandings about the application of aqua drugs and proper withdrawal period were found in the study area which might have adverse effect on fish and human health. Proper training of fish farming community about the appropriate dose and administration methods should be suggested for safe and sustainable aquaculture practices.

Open Access Original Research Article

Correlation between Morphometric and Dimorphic Variables to Characterize Potamon ebonyicum (Crustacea: Decapoda: Brachyura) from Ebonyi River Basin of Nigeria

Rupert C. Akpaniteaku, John N. Ofoma, Richard C. Ogbonna

Asian Journal of Fisheries and Aquatic Research, Page 1-8
DOI: 10.9734/ajfar/2018/v2i226130

Studies were carried out to determine relationships between morphometric and dimorphic variables of freshwater crab, Potamon ebonyicum. Parameter measurements were taken from side to side (left and right); and from tip to the extremity of characteristic features, to ensure that values were obtained at the widest points. The dimorphic variables showed positive correlation and linear relationship between male and female. Nonlinear relationship was recorded in most variables morphologically.  Regression analyses revealed poor correlation between carapace length (CL) and weight, and between carapace width (CW) and weight. There was a positive correlation between CL and CW of both sexes. The findings could be a guide for determining condition factor.  They could also be useful in field identification and further classification of freshwater crab.

Open Access Original Research Article

Growth and Survival of Nile Tilapia (Oreochromis niloticus, Linnaeus 1758) Fry Fed at Diffrerent Inclusion Levels of Wonderful Kola (Buchholzia coriacea) Seed Meal (BSM)

F. Eze, F. E. Avwemoya

Asian Journal of Fisheries and Aquatic Research, Page 1-6
DOI: 10.9734/ajfar/2018/v2i226489

The effect of different inclusion levels of wonderful kola (Buchholzia coriacea) seed meal (BSM) on growth performance and survival rate of Oreochromis niloticus fry was investigated. Five days old mixed sex of O. niloticus (0.1– 0.2 g weight and 0.45 mm length) were subjected to powdered B. coriacea seeds meal (BSM) at 0, 2, 4, 6, 8 and 10 g/kg twice daily for 1 month from April-May, 2015. It was conducted in an indoor experimental plastic basin of capacity 50 cm in diameter and 30 cm deep. 60 fry per duplicates with a total of 720 fry, six isonitrogeneous treatments and 2 duplicates per each treatment. A complete randomized design and 30% Crude Protein were used. The highest mean length, mean weight, specific growth rate and weight gain observed are 0.488 mm, 4.68 g, 0.85 and 4.65 g respectively. The highest of survival rate (100%) was recorded in fish fed with 6 g/ kg BSM. Treatment 1 having 0% BSM (control) had the lowest weight gain. In conclusion, the addition of 4 g/ kg of BSM in a fish diet, has no negative effect on the growth performance and survival of O. niloticus.