टूटीकोरिन जिले की मोलस्कन संपदाएं

टूटीकोरिन जिले की मोलस्कन संपदाए

Adoption of Sea Cage, Culture Practices in Thoothukudi District Tamil Nadu: An Eye Opener for Income Generation

Adoption of Sea Cage, Culture Practices in Thoothukudi District Tamil Nadu: An Eye Opener for Income Generatio

Success stories of model sea-cage farm Sippikulam fishervillage, Thoothukudi district

Success stories of model sea-cage farm Sippikulam fishervillage, Thoothukudi distric

Account of bivalve fishery resources of Southern Tamil Nadu

Account of bivalve fishery resources of Southern Tamil Nad

Biometrics and Radiographic Studies on the teratology of Starfish (Pentaceraster affinis) from Thoothukudi Coast of Gulf of Mannar, India

Biometrics and Radiographic Studies on the teratology of Starfish (Pentaceraster affinis) from Thoothukudi Coast of Gulf of Mannar, Indi

Minimum Legal Size proposed for commercially exploited marine finfish and shellfish resources of Tamil Nadu

Marine fisheries in Tamil Nadu have undergone tremendous change in terms of fishing pattern, fishing method, extension of fishing grounds, composition of fish catch and consequent increase in the total fish catch in recent years. The recent demand from industries involved in fish meal and fish oil encourages targeted fishing for by-catch resulting in heavy landing of low value by-catch in certain places along Tamil Nadu coast. These by-catch are often dominated by juveniles of many commercially important marine finfishes and shell fishes. So it warrants some caution and intervention. One of the methods to discourage the indiscriminate exploitation of juveniles is to impose a Minimum Legal Size (MLS) which is the size at which a particular species can be legally retained if caught. The advantage of a MLS is that it aids in the control of two major problems in the fisheries management, growth overfishing and recruitment overfishing either by increasing the minimum size of harvest or by increasing or maintaining the size of the spawning stock. The most common method of increasing the reproductive output through the use of size limits is to set the minimum size at which the females become sexually mature. As the individuals of a species do not attain sexual maturity at the same size, it can be a size at which higher proportions are mature

A new RP-HPLC method for the determination of Tenofovir Disoproxil Fumarate in pure form and pharmaceutical formulation

The present study aimed to develop the new method for the estimation and validation of tenofovir in pure form and in pharmaceutical dosage form by RP-HPLC. The chromatogram of tenofovir was developed through column (Hyper ODS2 C18), UV detection at 260 nm at a flow rate of 1.2 ml/min with Methanol and Phosphate buffer (90:10) as mobile phase. The method was validated by various validation parameters such as accuracy, precision, linearity, specificity as per the ICH guidelines. A linearity range and retention time of Tenofovir were found to be 20-110 µg/ml and 2.1 min respectively. The % RSD of the Tenofovir was found to be 0.7. The % recovery was obtained as 99.7% for standard and 96.32% for tablets. This method was simple, accurate, precise and sensitive. Hence, the developed method was employed for the routine analysis of Tenofovir in the pharmaceutical dosage form

PIP5KIβ Selectively Modulates Apical Endocytosis in Polarized Renal Epithelial Cells

Localized synthesis of phosphatidylinositol 4,5-bisphosphate [PtdIns(4,5)P2] at clathrin coated pits (CCPs) is crucial for the recruitment of adaptors and other components of the internalization machinery, as well as for regulating actin dynamics during endocytosis. PtdIns(4,5)P2 is synthesized from phosphatidylinositol 4-phosphate by any of three phosphatidylinositol 5-kinase type I (PIP5KI) isoforms (α, β or γ). PIP5KIβ localizes almost exclusively to the apical surface in polarized mouse cortical collecting duct cells, whereas the other isoforms have a less polarized membrane distribution. We therefore investigated the role of PIP5KI isoforms in endocytosis at the apical and basolateral domains. Endocytosis at the apical surface is known to occur more slowly than at the basolateral surface. Apical endocytosis was selectively stimulated by overexpression of PIP5KIβ whereas the other isoforms had no effect on either apical or basolateral internalization. We found no difference in the affinity for PtdIns(4,5)P2-containing liposomes of the PtdIns(4,5)P2 binding domains of epsin and Dab2, consistent with a generic effect of elevated PtdIns(4,5)P2 on apical endocytosis. Additionally, using apical total internal reflection fluorescence imaging and electron microscopy we found that cells overexpressing PIP5KIβ have fewer apical CCPs but more internalized coated structures than control cells, consistent with enhanced maturation of apical CCPs. Together, our results suggest that synthesis of PtdIns(4,5)P2 mediated by PIP5KIβ is rate limiting for apical but not basolateral endocytosis in polarized kidney cells. PtdIns(4,5)P2 may be required to overcome specific structural constraints that limit the efficiency of apical endocytosis. © 2013 Szalinski et al

Cephalopod fishery off Thoothukudi coast, Tamil Nadu

In Thoothukudi district of Tamil Nadu, cephalopod resources are principally exploited by single day trawlers followed by hook and line. During 2012-18, nearly 54% of cephalopods landed were caught by mechanised trawl net; 32% by outboard crafts operating hook and line, 8% by gill net and rest by other gears. From 2012-18, the cephalopod landing showed a fluctuating trend and major cephalopod species landed by trawl net were Sepia pharaonis, S. prabahari, Sepioteuthis lessoniana, Uroteuthis (P) singhalensis and U. (P) duvaucelii. In hook and line, S. pharaonis was the dominant species followed by S. lessoniana and Octopus cyanea

टूटिकोरिन जिले के सिप्पिकुलम गाँव के समुद्री पिजरं में एफ आइ एम एस यु एल – II के अधीन महाचिगंटों की पकड़ पर आधारित जलजीव पालन (सी बी ए)

टूटिकोरिन जिले के मछुआरों की आजीविका बढाने के लिए “टिकाऊ आजीविका के लिए मात्स्यिकी प्रबंधन” (एफ आइ एम एस यु एल – II) परियोजना के अधीन राज्य मात्स्यिकी विभाग (क्षेत्री य), टूटिकोरिन जिले के साथ 5 गाल्वनाइज़्ड लोहे से निर्मित तैरते समुद्री पिजंरों (6 मी. व्यास और 6 मी. गहराई) को स्थापित किया गया। पहले चरण में, टूटिकोरिन जिले के तटीय गाँवों से समुद्री पिजंरा उद्यम में रुचि रखने वाले मछुआरों को पहचाना गया और इन्हें पांच ग्रुपों में बांटा गया (प्रत्येक ग्रुप में चार सदस्य) और भा कृ अनु प–सी एम एफ आर आइ टूटिकोरिन अनुसंधान केंद्र में समुद्री पिजंरा मछली पालन के वैज्ञानिक पहलुओ पर प्रशि क्षण दिया गया। दसूरे चरण में सिप्पीकुलम के चयनित स्थानों में जी आई समुद्री पिजंरों को बनाकर उसमें प्लवमान एच डी पी ई ड्रमों को जोड़ दिया गया, और पिजंरे में आतंरिक एवं बाहरी जालों को लोहे के लंगरों के साथ स्थापित किया गया