• This essay was subsequently published as: Dillon, R.T., Jr. (2019b) The egg masses of freshwater pulmonate snails. (blogspot.com)
  • Faithful readers of this blog will not be surprised to learn that my email inbox typically receives a rather steady stream of inquiries with attached jpeg images of freshwater snails. (blogspot.com)
  • But you might be surprised to discover that I also occasionally receive images of things that are not freshwater snails, but could be. (blogspot.com)
  • So it has come to my attention that reliable information on the egg masses of freshwater pulmonate snails is a rare commodity on the web. (blogspot.com)
  • The name is most often applied to land snails, terrestrial pulmonate gastropod molluscs. (hollywoodfringe.org)
  • When the word 'snail' is used in this most general sense, it includes not just land snails but also numerous species of sea snails and freshwater snails. (hollywoodfringe.org)
  • Prosobranchs are typically longer-living and slower-growing than the more familiar pulmonate snails, inhabiting more permanent and stable bodies of water. (bookbaby.com)
  • The challenge introduced by ecophenotypic variation in shell morphology, also evident in populations of pulmonate snails, is further explored. (bookbaby.com)
  • Some North American populations of freshwater prosobranch snails have been listed as objects of conservation concern. (bookbaby.com)
  • He is the author of The Ecology of Freshwater Molluscs (Cambridge University Press, 2000) and over 60 scientific papers on the genetics, evolution, and ecology of snails. (bookbaby.com)
  • Specimens of freshwater snails ( Heleobia parchappii , Biomphalaria sp. (gob.ar)
  • A genus of small freshwater snails of the order Pulmonata, found throughout Africa and the Middle East, where it is a vector of SCHISTOSOMA HAEMATOBIUM. (lookformedical.com)
  • Volume 5 of the FWGNA series expands our continental survey of freshwater snails into the rivers, lakes, ponds, and streams of the Ohio drainage, together with its primary tributaries the Cumberland and the Tennessee. (bookbaby.com)
  • Our analysis suggests that natural selection has been more important in the evolution of freshwater pulmonate snails than gene flow restriction, but that gene flow restriction has been more important in the evolution of freshwater prosobranch snails than natural selection. (bookbaby.com)
  • The Garden Snail ( Cornu aspersum ) is an air-breathing pulmonate gastropod mollusc in the Helicidae family of terrestrial (land) snails. (similarbutdifferentanimals.com)
  • The Wrinkled Dune Snail ( Xeroplexa intersecta previously Candidula intersecta ) is an air-breathing pulmonate gastropod mollusc in the Geomitridae family of terrestrial (land) snails. (similarbutdifferentanimals.com)
  • The Grove Unbanded Snail - Yellow Form ( Cepaea nemoralis ) is an air-breathing pulmonate gastropod mollusc in the Helicidae family of terrestrial (land) snails. (similarbutdifferentanimals.com)
  • The Vineyard Snail ( Cernuella virgata or Helicella virgata ) is a pulmonate air-breathing gastropod mollusc in the Geomitridae family of terrestrial (land) hairy snails. (similarbutdifferentanimals.com)
  • And the family name that ultimately prevailed for the entire group of freshwater snails was based on the smooth-skinny concept of the genus, "Pleuroceridae. (blogspot.com)
  • Planorbarius corneus, common name the great ramshorn, is a relatively large species of air-breathing freshwater snail, an aquatic pulmonate gastropod mollusk in the family Planorbidae, the ram 's horn snails, or planorbids, which all have sinistral or left-coiling shells. (marcoleaoto.pt)
  • Planorbarius corneus, common name the great ramshorn, is a relatively large species of air-breathing freshwater snail, an aquatic pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails, or planorbids, which all have sinistral or left-coiling shells.wikipedia Su esperanza de vida se sitúa entre los 2 y 3 años. (marcoleaoto.pt)
  • Both snails that have lungs and snails that have gills have diversified so widely over geological time that a few species with gills can be found on land and numerous species with lungs can be found in freshwater. (pngimg.com)
  • The largest freshwater snails, Pomacea from South America, reach nearly 10 centimetres in diameter, and the largest naval snail, the Australian Syrinx aruanus. (indianetzone.com)
  • Ramshorn Snails (Planorbids) also known by tropical fish keeping enthusiasts as Ram's Horn Snails, Wheel Snails, Ear Snails, Red Ramshorns, and Brown Ramshorn are in a family of air breathing freshwater snails that have planispiral (coiled flat) shells. (tropical-fish-keeping.com)
  • Ramshorn Snails are scavengers that are frequently introduced into freshwater aquariums as egg bundles on live plants and although they are considered a nuisance by many aquarists, they provide the useful function of eating algae as well as cleaning up decaying plant and animal matter in the aquarium. (tropical-fish-keeping.com)
  • Ramshorn Snails do best in hard water conditions for healthy shell growth and like other aquatic pulmonate gastropod mollusks cannot tolerate copper in even minute amounts. (tropical-fish-keeping.com)
  • More than 20,000 freshwater snails belonging to 16 species were collected during 1998-2012 from various localities in eight countries in Europe. (biomedcentral.com)
  • Pp 107-111 in The Freshwater Gastropods of North America Volume 2, Essays on the Pulmonates. (blogspot.com)
  • The Freshwater Gastropods of North America Project is a long term, collaborative effort to inventory and monograph the entire freshwater gastropod fauna of the continental United States and Canada. (bookbaby.com)
  • In 1998 he founded the Freshwater Gastropods of North America Project, authoring or coauthoring an extensive website, a popular blog, and seven hardcopy volumes to date. (bookbaby.com)
  • Pp. 11-18 in The Freshwater Gastropods of North America Volume 3, Essays on the Prosobranchs. (blogspot.com)
  • Newcomb's snail (Erinna newcombi) is a species of air-breathing freshwater snail, a gastropod mollusk in the family Lymnaeidae. (wikipedia.org)
  • The rivers, lakes, and streams of North America are inhabited by a diverse assortment of gill-bearing freshwater snail populations collectively called "prosobranchs. (bookbaby.com)
  • The overarching theme of the present volume becomes, then, one of a struggle to understand the evolution of the freshwater prosobranch gastropod fauna of North America, both finely scientific and clumsily human. (bookbaby.com)
  • The taxonomy and systematics of the diverse freshwater gastropod fauna inhabiting this 58,604 square mile region are more a function of human history than evolutionary process. (fwgna.org)
  • The first notable survey of the freshwater gastropod fauna of any river in the Tennessee drainage was published in 1871, that of Miss Annie E. Law on a 20-mile section of the main Holston River, communicated by Dr. James Lewis. (fwgna.org)
  • Our complete FWGNA database, updating records from Atlantic drainages and combining with our fresh data from the Interior, now contains 22,044 records documenting 107 species of freshwater gastropods, with 21 subspecies. (bookbaby.com)
  • Our story begins in 1818, when the eccentric polymath Constantine S. Rafinesque (3) published the nomen " Pleurocera " as a genus to contain six species of freshwater prosobranch gastropods, none of which he described. (blogspot.com)
  • 1987. The effects of intermittent exposure to suspended solids and turbulence on three species of freshwater mussels. (crbdirt.com)
  • A former president of the American Malacological Society, Dr. Dillon contributed the freshwater gastropod chapter to the popular 2006 AMS publication, The Mollusks: A Guide to their Study, Collection and Preservation. (bookbaby.com)
  • The tension between gene trees and species trees, explored at some length using pulmonate models in Volume II, is aggravated in prosobranch populations by a phenomenon here described as "mitochondrial superheterogeneity. (bookbaby.com)
  • Last week I went down to my local pond and collected adults from the three most common pulmonate populations in the Charleston area - Lymnaea (Pseudosuccinea) columella , Physa acuta , and Helisoma trivolvis . (blogspot.com)
  • To determine how microplastics are incorporated into food webs, she used a representative freshwater food web including round gobies, gammarids and Quagga mussels. (ubc.ca)
  • Volume II collected 29 essays on the freshwater pulmonate gastropods. (bookbaby.com)
  • the condition is common and recurrent in freshwater schistosome within a large clade of avian schistosomes but habitats worldwide. (cdc.gov)
  • Cercarial dermatitis is frequently acquired in freshwater ica Pilsbury 1895 (Cephalaspidea: Haminoeidae), which habitats, and less commonly in marine or estuarine waters. (cdc.gov)
  • Dr. Robert T. Dillon, Jr. is America's foremost authority on freshwater gastropods. (bookbaby.com)
  • Like other pulmonate land gastropods, the common of land slugs have two pairs of 'feelers' or tentacles on their head. (indianetzone.com)
  • Volume I in this series reported the scientific results from our survey of the freshwater gastropods of United States Atlantic drainages, Georgia to the New York line. (bookbaby.com)
  • The modern grid-square distributional survey of British land and freshwater Mollusca was launched by the Conchological Society in 1961, an interim atlas being published in 1976, followed by a revised version in 1999. (malacsoc.org.uk)
  • In Volume 1 we pioneered a new method to rank freshwater gastropods by incidence categories for the purposes of conservation, based on the work of K. J. Gaston. (bookbaby.com)
  • We document 80 species and 19 subspecies of freshwater gastropods in this malacologically rich region. (bookbaby.com)
  • In the absence of any direct information about the habitat, range, morphological variation, or indeed any aspect of the biology of the living creatures they were competing against one another to describe, the taxonomy of the freshwater gastropods inhabiting the Tennessee/Cumberland region became a tangled mess. (fwgna.org)
  • Pp 113-120 in The Freshwater Gastropods of North America Volume 2, Essays on the Pulmonates. (blogspot.com)
  • However, gastropods offer some relevant models, especially among freshwater hermaphrodites, such as Physa acuta or Biomphalaria glabrata, easy to breed, with decent generation times (6-8 weeks) and improving genomic resources. (ovh.net)
  • A comparative morphological-biological analysis of the egg capsules of freshwater pulmonate gastropods. (foliamalacologica.com)
  • Range size and environmental calcium requirements of British freshwater gastropods. (foliamalacologica.com)
  • The evolution of life-cycle strategies in freshwater gastropods. (foliamalacologica.com)
  • Fossil freshwater gastropods and bivalves are common in clays of the Headon Hill Formation. (soton.ac.uk)
  • We report 66 species and subspecies of freshwater gastropods [1] , the most common of which are Physa acuta (959 incidences), Ferrissia rivularis (536), and Pleurocera semicarinata (all subspecies combined 528). (blogspot.com)
  • Physa acuta is the most common and widespread freshwater gastropod inhabiting our entire 14-state study area, a title it could probably claim for North America, and quite possibly the world (Dillon et al. (ovh.net)
  • Cercarial dermatitis is frequently acquired in freshwater ica Pilsbury 1895 (Cephalaspidea: Haminoeidae), which habitats, and less commonly in marine or estuarine waters. (cdc.gov)
  • the condition is common and recurrent in freshwater schistosome within a large clade of avian schistosomes but habitats worldwide. (cdc.gov)
  • Habitat: They are found in both salt (marine) and freshwater habitats and on land. (protezownia.pl)
  • There are no environmental factors known to induce such groove-like sutures in aquatic pulmonates indicating a genetic basis for this structure in L. bogatschevi. (researcher.life)
  • These animals were semi-aquatic and lived along coastal swamps and freshwater river deltas similar to modern hippopotamuses. (ms.gov)
  • It is inhabited by our three local pulmonate weeds ( Physa acuta , Helisoma trivolvis , and Lymnaea columella ) as well as by mosquito fish, tadpoles, and a variety of macrophytes both submerged and emergent. (blogspot.com)
  • Major Group: Gastropoda Order: Hygrophila Family: PhysidaeGenus: Physa (may be recorded as Physella)Species: acuta This family is represented in Asutralian freshwaters by a single species, Physa acuta Draparnaud. (ovh.net)
  • In the marsh of Doel ("Prosperhaven") we discovered the first inland population of the pulmonate mollusc Myosotella myosotis , a species which in Belgium was hitherto only known from three coastal localities. (inbo.be)
  • Such animals may prove to be sensitive models for studying the neuroecological effects of climate change with particular respect to invasive freshwater species such as predators, freshwater plans or microbial species. (novapublishers.com)
  • Following Charnov and similarly minded evolutionary biologists from the 1980s and 1990s, I have suggested that size at maturation in pulmonates may be a function of survivorship schedule (Dillon 2000: 140 - 149). (blogspot.com)
  • Observations upon the early stages in the development of the fresh-water pulmonates. (nih.gov)
  • Several of you have requested copies of the presentation I contributed at the Society for Freshwater Science meeting in Raleigh earlier this month. (blogspot.com)
  • We report preliminary results from a survey of the freshwater gastropod fauna from the Ohio River basin above Paducah, including western Pennsylvania and most of West Virginia, Ohio, Kentucky, and Indiana. (blogspot.com)
  • It is my hypothesis that gigantism in pulmonates may be prompted by some environmental perturbation postponing, perhaps even canceling, reproductive maturity. (blogspot.com)