A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Anandhan, R.
- Effect of Lead Nitrate on Histopathological Changes in Tissues of Freshwater Fish Labeo rohita (Ham.)
Authors
1 Deportment of Zoology, Annamalai University, Annamalai Nagar, Tamil Nadu -608 002, IN
2 Center Advanced study in Marine Biology, Annamalai University Parangipettai, Tamil Nadu- 608 502, IN
Source
Indian Journal of Education and Information Management, Vol 6, No 2 (2017), Pagination: 1-8Abstract
Objective: To investigate lead nitrate toxicity with emphasis on the histopathological effects of fish Labeorohita.
Methods: The fishes were exposed to 31, 31.5, 32, 32.5 and 33ppm of lead nitrate (LN) solution at 24, 48, 72 and 96 hours of intervals. The lethal conc. (LC50) value of lead nitrate was 33ppm for 96 h of exposure. Fishes were exposed to control and sub lethal conc. of lead nitrate (3.3ppm) over a period of 96 h.
Findings: Histopathology of fish organs, after 96 Hof LN exposure revealed the cell proliferation, lamellar fusion, lamellar cell hyperplasia, and epithelial lifting. The vacuolation of hepatocytes and necrosis were observed in liver. The changes of the tissue cells were predominantly showed in 96hr.
Application/Improvements: LN is highly toxic to Labeorohita therefore its high conc. of LN in areas close to aquatic bodies should not be encouraged. Fishes from such water bodies is not suitable for human consumption because of the possibility of toxic material present in the fish. Fishes as well as water due to such pollution are toxic to human beings.
Keywords
Lead Nitrate, Histopathology, Labeorohita, Hyperplasia, Water Bodies, Heavy Metal.References
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- Determination of OC, N, P, K Level with Effect Endosulfan in Vermicompost
Authors
1 Deportment of Zoology, Annamalai University, Annamalai Nagar, Tamil Nadu - 608 002, IN
2 Center Advanced study in Marine Biology, Annamalai University Parangipettai-608 502, Tamil Nadu, IN
Source
Indian Journal of Education and Information Management, Vol 6, No 3 (2017), Pagination: 1-6Abstract
Objective/Backgrounds: The analysis of selected macronutrients such as NPK and OC content in the natural compost (WU) and vermicompost (WW) produced from sublethal concentrations of endosulfan mixed cow dung by the action of Indian earthworm Lampitomauritii (Kinberg).
Methods/Statistical analysis: Biomass, OC, N, P and N level was observed in endosulfan mixed vermicompost and natural compost at the end of 90th day.
Findings: The biomass of L. mauritii, OC, N, P and K was decreased in endosulfan treated experiments than control.
Application/Improvements: To reduce the application of pesticides in the agricultural field due to affecting the non target farmer’s friend organism like earthworms.
Keywords
Earthworm, Lampitomauritii, Pesticide, Endosulfan, Growth, Nutrients.References
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- Culture Practices of Litopenaeus vannamei in Fresh Water Grow-Out Ponds
Authors
1 Centre of Advanced Study in Marine Biology, Annamalai University, Parangipettai-608 502, Tamil Nadu, IN
2 Deportment of Zoology, Annamalai University, Annamalai Nagar -608 002, Tamil Nadu, IN
Source
Indian Journal of Education and Information Management, Vol 6, No 3 (2017), Pagination: 1-9Abstract
Background/Objectives: Shrimp farming has been made an impressive growth in many developing countries especially in Asian countries. This activity is paved way to prominent economic growth and social importance.
Methods/Statistical analysis: The present study was undertaken for shrimp culture during August 2015 – November 2015 from fresh water aquaculture farm. Water samples were collected from culture ponds during the study period to analyze various physico-chemical parameters. The L.vannameiseeds (post larval stage 14) that had been acclimatized to the oppt salinity and it were confirmed disease free, transport with maintained optimum condition and reached to the ponds. The seeds were properly stocked in the culture ponds.
Findings: The water temperature values varied from 24°C and 28°C.Ranges of salinity 0.5 - 2.5 ppt were recorded. DO (dissolved oxygen) values varied from 4 and 7.1ml/l. The maximum pH values of 8.0 was recorded during the month of November 2015 and minimum of 7.3 was observed during August 2015. The maximum of feed provision 3.635tn was recorded in P3 (pond 3) and minimum of 3.145 was recorded at P1 (pond 1). The maximum ABW 25.3g was recorded in P3 and minimum of 24.5 was recorded at P1. The maximum biomass 2.340tn was recorded in P3 and minimum of 2.058tn was recorded at P2.
Application/Improvements: Shrimp culture has been increasing recent years in Indian Subcontinent. Liberalization of economy, high profitability and good international market are the factors, this has been given new impetus for shrimp culture boom in India. Hence, the present has been carried out the culture activity of L. vannamei in fresh water environment. This will be motivated and enhanced the culture practices.
Keywords
L. vannamei, Pond Preparation, Physic-Chemical Parameter, Seed Stocking, Mineral Supplementation, Feed Management, Growth Monitoring and Harvesting.References
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