Three malacological surveys were conducted in the Takua Pa District of Phang-Nga Province, southern Thailand, before and after the Indian Ocean Tsunami disaster. Twenty-nine species of fresh- and brackish-water snails were found, in which 10 species of freshwater snails were present, including live Pila polita; 8 species were of medical importance. Two brackish-water snails, Nerita articulata a...

Imposex, the development of male sex characteristics by female gonochoristic snails, has been documented globally and is causally associated with exposure to the ubiquitous environmental contaminant tributyltin (TBT). Elevated testosterone levels in snails also are associated with TBT, and direct exposure to testosterone has been shown to cause imposex. We discovered previously that the mud sna...

The widespread distributions of aquatic species often contrast with their limited ability to disperse by their own propulsion among wetlands isolated by land. Studies of the potential role of water birds as dispersal vectors have been focused mainly on internal transport (endozoochory). However, many anecdotal observations that small species adhere to flying birds also exist (ectozoochory). We ...

the present study was conducted to investigate the prevalence of developmental stages of fasciola gigantica infection in lymnaea snails and their populations in sylhet region of bangladesh. a total of 1865 lymnaea snails were collected and examined, of which 56 (3%) were found to having infected with developmental stages of fasciola gigantica. only 4.08% infected of 515 snails were collected fr...

We purposively selected 39 sampling sites along the Mara River and its two perennial tributaries of Amala and Nyangores and sampled snails. In addition, water physicochemical parameters (temperature, turbidity, dissolved oxygen, conductivity, alkalinity, salinity and pH) were taken to establish their influence on the snail abundance and habitat preference. Out of the 39 sites sampled, 10 (25.6%...

This study focused on the evaluation of effect soil moisture feed intake and weight gain Giant African Land snails, Achatina achatina Archachatina marginata in different seasons using a 2 x 4 factorial experiment with at two levels (low 25ml water/ week high 100ml water/week), species (Achatina marginata) season four (cold dry, hot wet cold wet) constituting three factors. Result showed that th...

This review examines the methods used to study carboxylic acids and the results of such studies on certain acids in freshwater snails. The three areas of carboxylic acid interest considered in this review involve their roles as metabolites, phagostimulants, and biomarkers. The chromatographic and non-chromatographic methods used to study the carboxylic acids in the snails are considered herein....

many species of the freshwater pulmonate snail family lymnaeidae act as intermediate hosts in the transmission of digenean trematode larvae, including those of the causative agent of fasciolosis. based on this, current investigation was aimed to determine diversity and geographical distribution of lymnaeidae snails and role of biochemical indices in habitat of them in west azerbaijan province, ...

Sodium pentachlorophenate (NaPCP) is still one of the most commonly used molluscicides in Japan ; since 1953, the major endemic areas of schistosomiasis have been treated with this compound twice a year, in spring and autumn when irrigation is stopped. It is therefore of interest to know whether resistance of the snail to the molluscicide appears in the areas. Some authors (Okabe, Okahara and O...

Under controlled conditions, growth, survivorship and several nutritional parameters (ingestion, egestion and assimilation) were measured weekly in hatchlings that either ate a conspecific egg after birth (cannibalistic) or not (non-cannibalistic) and in food-deprived individuals (control group). Subsequently, the snails were fed on Taraxacum officinale. After 4 days, cannibalistic snails were ...