This paper examines the distribution and infection of Biomphalaria glabrata with Schistosoma mansoni in all aquatic snail habitats in a rural area in the state of Minas Gerais, Brazil, in relation to physico/biotic and behavioral factors. Snail and environmental surveys were carried out semi-annually between July 2001 and November 2002 at 106 sites. Collected snails were examined in the laborat...

Descreve-se o caso de mulher com 41 anos, saudável, com dermatose bilateral, pruriginosa, com uma semana de evolução, localizada ao abdómen, região inguinal e coxas, caracterizada por pápulas e placas eritematosas, em trajectos serpinginosos e algumas vesiculo-pústulas. As queixas iniciaram-se dois dias depois de ter regressado de férias do Brasil. Tendo em conta a clínica e epidemiologia, admi...

We present a case of visceral larva migrans which came as a complete histologic surprise. The patient was operated as a case of chronic cholecystitis and was found at operation to have multiple hepatic nodules. A cholecystectomy with a biopsy of the liver nodule was performed. Histopathologically a diagnosis of visceral larva migrans was made. To our knowledge this is the first case report of t...

Human anisakiasis is a zoonosis acquired by eating raw or undercooked infected seafood. Herein, we report a case of acute dysentery caused by anisakiasis in a 64-year-old man in Malaysia. A colonoscopy was performed and a nematode larva was found penetrating the mucosa of the ascending colon. Bleeding was observed at the site of penetration. Y-shaped lateral epidermal cords were seen from the c...

The mature larva of Stenichnus collaris is re-described on the basis of a shed larval skin. This is the first description of an immature Stenichnus identified by rearing to an adult beetle, and not only by collecting the larva in association with adults, as in previously published works. New data on the life history of St. collaris are provided, and possible serial homology of chaetotaxic struc...

The optokinetic reflex (OKR) is a basic visual reflex exhibited by most vertebrates and plays an important role in stabilizing the eye relative to the visual scene. However, the OKR requires that an animal detect moving stripes and it is possible that fish that fail to exhibit an OKR may not be completely blind. One zebrafish mutant, the no optokinetic response c (nrc) has no OKR under any ligh...

The grey mullet is a catadromous species that spawns in the taurine-rich seawater environment, followed by young fish generally migrating to less saline, low taurine waters during larva-juvenile transition. Consequently, this study aimed (1) determines whether there dietary requirement juvenile for enhanced growth and (2) potential biosynthesis. experimental system consisted of sixteen 400-l V-...

15 Adult zebrafish are robustly social animals whereas larva is not. We designed an 16 assay to determine at what stage of development zebrafish begin to interact with and 17 prefer other fish. One week old zebrafish do not show significant social preference 18 whereas most 3 weeks old zebrafish strongly prefer to remain in a compartment where 19 they can view conspecifics. However, for some in...

Zebrafish epilepsy models are emerging tools in experimental epilepsy. Zebrafish larvae, in particular, are advantageous because they can be easily genetically altered and used for developmental and drug studies since agents applied to the bath penetrate the organism easily. Methods for electrophysiological recordings in zebrafish are new and evolving. We present a novel multi-electrode array m...

Optimizing larval rearing protocols is critical to successful intensive fish culture. We compared the efficacy of feeding strategies for larvae maraena whitefish Coregonus maraena, a promising candidate aquaculture. Survival, growth indicators, intestine development, and liver status were in fed live feed, commercial dried weaned from feed at 5, 10, 15, 20, or 25 days post hatching (dph). Seven...