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Rajagopalsamy, C. B. T.
- Role of Kisspeptin on Gonadal Maturation of Striped Murrel, Channa striatus
Abstract Views :340 |
PDF Views:106
Authors
Affiliations
1 Department of Fisheries Biology & Resource Management, Fisheries College and Research Institute, Thoothukudi, 628008, IN
1 Department of Fisheries Biology & Resource Management, Fisheries College and Research Institute, Thoothukudi, 628008, IN
Source
Indian Journal of Science and Technology, Vol 4, No S8 (2011), Pagination: 176-177Abstract
No AbstractFull Text
References
- Sethu Selvaraj , Hajime Kitano , Yoichiro Fujinaga , Hirofumi Ohga , Michio Yoneda, Akihiko Yamaguchi , Akio Shimizu , Michiya Matsuyama. , 2010. Molecular characterization, tissue distribution, and mRNA expression profiles of two Kiss genes in the adult male and female chub mackerel (Scomber japonicus) during different gonadal stages. General and Comparative Endocrinology 169 (2010) 28–38.
- Gaytán, F., Gaytán, M., Castellano, J.M., Romero, M., Roa, J., Aparicio, B., Garrido, N.,Sánchez-Criado, J.E., Millar, R.P., Pellicer, A., Fraser, H.M., Tena- Sempere, M.,2009. KiSS-1 in the mammalian ovary: distribution of kisspeptin in human and marmoset and alterations in KiSS-1 mRNA levels in a rat model of ovulatory dysfunction. Am. J. Physiol. Endocrinol. Metab. 296, E520–E531.
- Effect of Clove Oil and Benzocaine on the Respiratory Metabolism of Angel Fish Pterophyllum Scalare
Abstract Views :547 |
PDF Views:0
Authors
Affiliations
1 Central Marine Fisheries Research Institute, Mumbai, IN
2 Fisheries College and Research Institute, TANUVAS, Thoothukudi, IN
1 Central Marine Fisheries Research Institute, Mumbai, IN
2 Fisheries College and Research Institute, TANUVAS, Thoothukudi, IN
Source
Indian Journal of Science and Technology, Vol 6, No 7 (2013), Pagination: 4853-4861Abstract
Anesthetics play an important role in fisheries research and aquaculture and are used to facilitate various handling procedures, such as weighing, sorting, collection of eggs and milt, tagging and medical treatment. Clove oil and benzocaine are approved anesthetic by US Food and Drug Administration. The present study investigates the effect of anesthetics on the respiratory metabolic parameters such as O2 consumption rate, CO2 output rate, NH3-N excretion rate, RQ, AQ and opercular activity of Angel fish, Pterophyllum scalare. The concentration of clove oil and benzocaine were selected based on the time of induction of sedation and recovery of the Angel fish. The concentration of clove oil selected for the Angel fish were 5 ppm, 15 ppm, 30 ppm, 45 ppm, 55 ppm and the benzocaine concentration were 30 ppm, 45 ppm, 50 ppm, 100 ppm, 200 ppm, 300 ppm and 400 ppm. The minimum values of respiratory metabolic parameters in clove oil-anaesthetized Angel fish P.scalare were observed at the concentration of 45 ppm while the same was in 50 ppm in the case of benzocaine treatment. Simulated transportation experiments were conducted for Angel fish and the results suggested that 50ppm benzocaine was the optimum dose of anaesthetics for safe transport of Angel fish.Keywords
Respiratory Metabolism, Angel Fish, Anesthetics, Clove Oil and BenzocaineFull Text
References
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- Paterson B D, Rimmer M A et al. (2003). Physiological responses of the Asian sea bass Lates calcarifer to water quality deterioration during simulated live transport: acidosis, red cell swelling, and levels of ions and ammonia in the plasma, Aquaculture, vol 218(1–4), 717–728.
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- Storage Characteristics of Restructured Ready-to-Cook Imitation Shrimp Fingers under Cold Storage (-18°C)
Abstract Views :302 |
PDF Views:0
Authors
Affiliations
1 Department of Fishery Microbiology, UNESCO - MIRCEN Centre for Marine Biotechnology, College of Fisheries, Karnataka Veterinary, Animal and Fisheries Sciences University, Mangalore (Karnataka), IN
2 Department of Fish Processing Technology, Fisheries College and Research Institute, Thoothukudi (T.N.), IN
1 Department of Fishery Microbiology, UNESCO - MIRCEN Centre for Marine Biotechnology, College of Fisheries, Karnataka Veterinary, Animal and Fisheries Sciences University, Mangalore (Karnataka), IN
2 Department of Fish Processing Technology, Fisheries College and Research Institute, Thoothukudi (T.N.), IN
Source
International Journal of Processing and Post harvest Technology, Vol 6, No 1 (2015), Pagination: 6-13Abstract
The frozen storage behaviour of imitation shrimp fingers (ISF) prepared from fresh and one day iced Nemipterus bleekeri were studied for 120 days at -18°C. During storage, quality characteristics viz., proximate composition, biochemical, microbial and sensory characteristics were investigated and shelf-life also studied. Salt (NaCl) 1 per cent, sucrose 1.5 per cent and setting process at 40°C for 20 min duration were found to be optimum for good gel formation. The moisture, protein, fat and ash contents were almost unchanged throughout the storage period. pH slightly decreased while TMAN and TVB-N contents increased during storage period. Bacterial counts viz., total plate count, staphylococcal count, psychrophilic counts, decreased significantly while E. coli counts was in loss detection level. Anaerobes growth faster in vacuum packs than air packs. Organoleptic evaluation revealed that the frozen stored ISF had the shelf-life of more there 120 days and also it needs further investigation for determining the maximum shelf-life.Keywords
ISF, Setting, Cryoprotectants, Gel Formation, Quality Characteristics, Organoleptic Evaluation.
- Impact of Biofloc Technology on the Growth of Goldfish Young Ones
Abstract Views :315 |
PDF Views:0
Authors
Affiliations
1 Fisheries College and Research Institute, TNFU, Thoothukudi, IN
1 Fisheries College and Research Institute, TNFU, Thoothukudi, IN
Source
Indian Journal of Science and Technology, Vol 8, No 12 (2015), Pagination:Abstract
In the present study, the impact of biofloc technology on the growth of goldfish young ones was investigated. In the mean value of water temperature, pH, dissolved oxygen, ammonia-N, nitrite-N, nitrate-N and Floc Volume (FV) in biofloc treatment system where goldfish young ones were reared was 25.5oC, 7.9, 3.4 mg/l, 51.92 μg-at-N/l, 1.15 μg-at-N/l, 364.52 μg-at-N/l and 5.25 ml/l respectively. The control set registered the mean value of water temperature (28.6oC), pH (8.1), dissolved oxygen (3.9mg/l), ammonia-N (64.96μg-at-N/l), nitrite-N (2.42μg-at-N/l), nitrate-N (165.22 μg-at-N/l) and FV (0.24ml/l) more than the treatment excepting the nitrate-N and Floc volume. Chlorella sp., Oscilatoria sp., Stephanodiscus sp., Coscinodiscus sp., Navicula sp., Amphiprora sp., Nitzschia sp., Chaetoceros sp., Cyclotella sp., Triceratium sp., Cymbella sp., Stentor sp, Paramecium sp, Cyclidium sp, Peranema sp, Petalomonas sp, Rotifer, Nematode or round worm, Chaetonotus sp. and Cyclops sp. were observed in the biofloc treatment tank while the control tank had only Chlorella sp., Coscinodiscus sp. and Chaetoceros sp. The maximum SGR (25.78) was observed in biofloc treatment while in control the same was 22.87. 91.8 percent survival rate was registered in the young ones of Goldfish reared under biofloc treatment. 52.88 percent growth increment was recorded in goldfish young ones under biofloc treatment when compared with the control.Keywords
Biofloc, Goldfish, Growth and Survival, Length Weight Relationship, Proximate CompositionFull Text
- Acute Cadmium Toxicity Induced Impairments in the Liver and Kidney of Freshwater Catfish, Heteropneustes fossilis (Bloch)
Abstract Views :185 |
PDF Views:0
Authors
N. Jayakumar
1,
T. Francis
1,
P. Jawahar
1,
C. B. T. Rajagopalsamy
2,
R. Santhakumar
3,
A. Subburaj
1
Affiliations
1 Department of Fisheries Biology and Resource Management, Fisheries College and Research Institute, Tamil Nadu Fisheries University, Thoothukudi – 628008, Tamil Nadu, IN
2 Department of Inland Aquaculture, IN
3 Department of Fisheries Extension, Fisheries College and Research Institute, Tamil Nadu Fisheries University, Thoothukudi – 628008, Tamil Nadu,, IN
1 Department of Fisheries Biology and Resource Management, Fisheries College and Research Institute, Tamil Nadu Fisheries University, Thoothukudi – 628008, Tamil Nadu, IN
2 Department of Inland Aquaculture, IN
3 Department of Fisheries Extension, Fisheries College and Research Institute, Tamil Nadu Fisheries University, Thoothukudi – 628008, Tamil Nadu,, IN
Source
Indian Journal of Science and Technology, Vol 9, No 8 (2016), Pagination:Abstract
Background / objective: The heavy metal, Cadmium enters aquatic environment through natural / anthropogenic sources and exerts deleterious effects in fish. Hence, the present study is aimed at investigating the acute Cd toxicity induced histological alterations in the liver and kidney of catfish, Heteropneustes fossilis. Methods: The bioassay was performed in a static renewal regime with H. fossilis exposing to varying acute toxicity concentrations viz., 18.45, 36.9, 73.7, 147.4 and 294.8 mg/l for 96 h. The LC50 was determined to be 44.13 mg/l. Since 100 % mortality occurred in the highest concentrations after 96 h, liver and kidney tissues were collected from fish exposed to the first three lower concentrations. Standard histology protocol was followed to study the histological alterations. Findings: The histological alterations like increased kupffer cell and pycnotic nucleus, ruptured hepatic tissue and nucleus, cellular necrosis and focal necrosis were observed in the liver of fish exposed to Cd. Similarly, vacuolation, increased periglomerular and peritubular space, shrunken glomerulus, melanomacrophages and loss of cytoplasm were observed in the kidney of fish treated with Cd. The intensity of the histological alterations in both liver and kidney was found to be concentration and duration dependent. Hepatic tissues were found to be ruptured in the liver of fish exposed to all the three concentrations viz., 18.45, 36.9 and 73.7 mg Cd/l. The appearance of melanomacrophage aggregates is a generalized non-specific marker, indicating environmental stress. In the present study, melanomacrophages were observed in kidney of fish exposed to 36.9 and 73.7 mg Cd/l. Our present observations on histological alterations in the liver and kidney of H. fossilis were in conformity to the histological observations made in the liver and kidney of various fish species exposed to different toxicants. Applications: The histological alterations in liver and kidney H. fossilis induced by Cd suggest that Cd can be a potential toxicant and hence these alterations can be used as biomarkers to monitor aquatic pollution.Keywords
Acute Toxicity, Cadmium, Histology, Heteropneustes fossilis, Kidney, LiverFull Text