The purpose of the study was to record different intermediate hosts of A. cantonensis and to determine the infection prevalence and intensity of this parasite in freshwater snails in relation to some ecological and biological factors. The study was conducted at Al-Salam irrigation Canal and Al-Abtal village (north Sinai) for one year, from March 2004 to February 2005. Thirteen species of freshw...

In northwest Africa some species from Sahelian origin appear with relict populations and apparently isolated by the extreme aridity of the Sahara desert. However very tolerant to aridity species could maintain continuous populations as might be the case for Echis leucogaster as indicated by results from genetic analysis and bioclimatic models. Resum: Al nord-oest d'àfrica apareixen un grup d'es...

The chitosan nanoparticles used widely as a drug delivery systems recently. In the present study the Echis carinataus snake venom loaded chitosan nanoparticles were prepared based on ionic gelation of tripolyphosphate and chitosan. The nanoparticles physicochemical characteristics, stability and biological activity of encapsulated venom were studied. The particles were spherical in shape and th...

Abstract Native-range thermal constraints may not reflect the geographical distributions of species introduced from native island ranges in part due to rapid physiological adaptation new environments. Correlative ecological niche models thus underestimate potential invasive islands. The northern curly-tailed lizard (Leiocephalus carinatus) is established Florida, including populations north its...

livid and watery serum oozes out of the puncture. Headache and in some delirium supervenes and increases. Sense of sinking is very urgent in some. The characteristic sign of capillary bleeding now begins inasmuch as all the mucus surfaces bleed. Heart presents to be weak and with distinct systolic murmur, sharp and shrill in tone, breathing now becomes hurried, patient exhausted. Tetanic spasm ...

Sir,?I liave lately received from Mr. Baini Parshad, B.Sc., Zoological Laboratory, Lahore, a snake for identification, with the report that a native had succumbed to the effects of its bite. The specimen proved to be an Echis carinata, one foot two inches in length. A native about 38 years of age was bitten on the 18th June in the jungle, just above the ankleA companion captured and killed the ...

Gastrotrypes Brues (Hymenoptera: Platygastridae) is a rare genus, represented so far by only 7 species globally. Two new viz. brevis Sunita et Rajmohana sp. n. and carinatus are hereby described as to science from Kerala, India. A revised identification key also provided.