Informatics Publishing Limited

N. V. Nanda Kumar , A. Nagarjuna , P. Mallikarjuna Rao , P. V. Chalapathi Rao

Abstract

Nelapattu Bird Sanctuary (Lat. 13°49' N to 31°51' N; Long. 79°57' E to 59°15' E) is located towards west of East coast of Bay of Bengal and about 20 km west of Pulicat Lake near Sullurpet, Nellore District, Andhra Pradesh. It is one of the biggest pelicanery having approximately 1500 pelicans (Pelecanus philippensis) breeding and roosting. It is also an ideal roosting and breeding for long distant and local migrant birds. Vertical gradient and resource partitioning of migratory birds on Barringtonia tree in Nelapattu Bird Sanctuary is being observed. A gradual and natural domination of open bill storks is observed over a period of time. A review on management of Nelapattu Bird Sanctuary is described for ecological sustainability which include irrigation water management, deweeding and prevention of algal bloom, Prosopis juliflora plantation for roosting of birds, plantation of Subabul trees for procuring nesting material. Feeding of st Krishna river water to last only up to May/June 1^st week only to avoid stabilization of new summer birds which might compete for space. A statistical relationship worked out between monsoon rainfall and pelican migration.

Keywords

Conservation, Nelapattu Bird Sanctuary Pelicans (Pelecanus philippensis)

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A. Nagarjuna ¹, P. Jacob Doss ¹

Affiliations
1 Department of Zoology, Division of Toxicology, Sri Venkateswara University, Tirupati – 517 502, Chittoor District, Andhra Pradesh, IN

Abstract

Cypermethrin is the most widely used Type II pyrethroid pesticide because of its high effectiveness against target species and its low mammalian toxicity reported so far. It is a fast-acting neurotoxin and is known to cause free radical-mediated tissue damage. On exposure to oral sublethal doses (41 mg/kg bw) of cypermethrin as single dose, double dose and multiple dose with 48 h interval the various profiles of protein metabolism were studied in different groups of rat heart tissue. Total proteins showed decrement; whereas free amino acids, the activities of protease, aspartate aminotransferase, alanine aminotransferase and glutamate dehydrogenase and ammonia significantly increased in cypermethrin exposed rats. Urea content increase at all doses of exposure was not statistically significant. Thus variation in the protein metabolic profiles of the rat exposed to cypermethrin indicates its toxic effect on the cellular metabolism thereby leading to impaired protein synthetic machinery is clearly evidenced by histopathological studies.

Keywords

Cypermethrin, pathophysiology and rat heart tissue

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