The freshwater pulmonate snail, Lymnaea stagnalis, is the most sensitive aquatic organism tested to date for Ni. We undertook a series of experiments to investigate the underlying mechanism(s) for this observed hypersensitivity. Consistent with previous experiments, juvenile snail growth in a 21-day exposure was reduced by 48% relative to the control when exposed to 1.3 μg l(-1) Ni (EC20 less t...

Objective: An experiment was conducted to investigate the effects of citrus brown snail powder as a source of calcium on growth performance, tibia characteristics, immune response and blood metabolites in broiler chickens.  Methods: One hundred and eighty 1-day old chicks were randomly distributed into four treatments, each of which had three replicates. Each replicate contains 15 chicks. The t...

The parasitic flatworm Schistosoma mansoni, causative agent of human intestinal schistosomiasis in South America, relies importantly on the freshwater snail Biomphalaria glabrata as intermediate host to achieve development of cercariae that infect humans. The recommendation from the World Health Organization (WHO) to integrate snail control in efforts to counter schistosomiasis transmission pro...

Schistosomiasis is a chronic, parasitic disease, infecting more than 207 million people, mostly from Africa, with an estimated 700 million people at risk in 74 endemic countries. One of strategies to eradicate this disease is biocontrol of its vector snail. Lab experiments and field survey have been carried out to investigate the impact and the relationship between the exotic crayfish; Procamba...

Fasciola hepatica is a trematode that causes zoonosis, mainly in cattle and sheep, and occasionally in humans. Few recent studies have determined the infection status of this fluke in Korea. In August 2015, we collected 402 samples of freshwater snails at Hoenggye-ri (upper stream) and Suha-ri (lower stream) of Song-cheon (stream) in Daegwalnyeong-myeon, Pyeongchang-gun in Gangwon-do (Province)...

Investigating the geographical distribution of genetic lineages within species is critical to our understanding of how species evolve. As many species inhabit large and complex ranges, it is important that phylogeographical research take into account the entire range of widespread species to clarify how myriad extrinsic variables have affected their evolutionary history. Using phylogenetic, nes...

Gastropods are abundant key components in freshwater ecosystems, many of which affected by anthropogenic activities. The genus Heleobia is widely distributed across Argentina, and the native parchappii very common Pampean Region. identification candidate species for toxicity testing gaining increasing interest. objectives present study were to evaluate 1) susceptibility H. a reference toxicant ...

In the present paper, we describe farming system of Pomacea canaliculata, an edible freshwater snail, as it is practiced by a farmer mini-livestock in vicinity Andong Korea. We visited snail farm several times summer and winter year conducted interviews with manager using semi-structured questionnaire. The housed polythene tunnels uses tank pen trench type made up propylene measuring 1 m × 2 0....

Apple snails (ASs), the freshwater of family Ampullariidae, are widely spread in tropical and subtropical regions. Owing to their strong invasiveness harmful effects on agricultural production ecosystems, they have attracted considerable attention. However, less research has been conducted whole picture current status development trends ASs field. For this purpose, we a bibliometric analysis ba...

Rhogocytes, also termed "pore cells", occur as solitary or clustered cells in the connective tissue of gastropod molluscs. Rhogocytes possess an enveloping lamina of extracellular matrix and enigmatic extracellular lacunae bridged by cytoplasmic bars that form 20 nm diaphragmatic slits likely to act as a molecular sieve. Recent papers highlight the embryogenesis and ultrastructure of these cell...