Project Noah stands for Networked organisms and habitats. It is meant as a tool that you can use to explore and document wildlife and harness the power of citizens scientists. See http://www.projectnoah.org/faq for more details on what how to can participate.
Two recent papers of Ignacio Agudo give details on invasive species and the conservation status of freshwater and terrestrial mollusks in Santa Catarina State, Brazil.
Last week Jeff Nekola (Univ. of New Mexico, Albuquerque) gave a seminar at NCB Naturalis, entitled “The ten things every macroecologist should know about land snail biodiversity”. Although based on an extensive survey of more than 1500 North American sites, representing more than 400 taxa (mainly microsnails) and over a half million specimens, the main points of his talk may be inspirational to Neotropical malacologists too.
Today two new papers were published in Basteria. One is an addition to the Bibliography of Cuban terrestrial Mollusca that was published last year. The other is the introduction of a replacement name for a Helicina species that was described from Colombia in 1977.
Further details may be found on the Publications page on my Snail Site (link above).
Another picture similar to the last one in this series and one first inspection it may be confused. Both species have a caudal horn, but this is a distinctive morphological characteristic for different genera. Communis opinio among the persons consulted was this could be a member of the Helicarionidae. This is an Asian family and one would think it may have been introduced; however, Adrián González spotted this snail in northern Ecuador in primary forest. So frankly, we don’t have a clue yet what it is.In general, microsnails from northern South America are ill-studied and it seems that nobody has closely looked to these groups since Horace Burrington Baker in the 1920s, when he mainly published on material from northern Venezuela.
There have been some previous reports on snail dispersal suggested by means of birds (e.g. Gittenberger et al., 2006). Now Japanese biologists have studied the survival rate of snails digested by birds and found a surprising 15% for the micro-snail Tornatellides boeningi (Wada et al., 2011). In this case they explain the dispersal of this snail within an isolated island in the Ogawasama group in the western Pacific.