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AMS Newsletter Fall 2010.Pdf American Malacological Society Newsletter Fall 2010 NEWSLETTER OF THE AMERICAN MALACOLOGICAL SOCIETY OFFICE OF THE SECRETARY DEPARTMENT OF MALACOLOGY, ACADEMY OF NATURAL SCIENCES 1900 BENJAMIN FRANKLIN PARKWAY, PHILADELPHIA PA 19103-1195, USA VOLUME 41, NO 2. FALL 2010 http://www.malacological.org ISSN 1041-5300 ANNOUNCEMENTS minimal impact on marine coastal field work! At this point in time, several activities are in the planning stage. There will be a special session on gastropod behavior, life history strategies, and ecology. You are invited to present recent experimental discoveries on gastropod behavior, life history strategies, and ecology. If you have an interest in participating please contact either: Amy Wethington ([email protected]), Beth Davis- Berg ([email protected]), or Cindy Norton ([email protected]). We welcome students to participate as well. We hope to have a whole day of interesting talks and a discussion afterwards. Jay Cordeiro ([email protected]) will be organizing a session on issues in molluscan conservation. We will be including topics in molluscan diversity, distribution, threats, AMS 2011 – PITTSBURGH, PENNSYLVANIA conservation issues, and management. This session JULY 23-28, 2011 will deal with marine, freshwater, and terrestrial environments. We also expect to host a late Submitted by Charlie Sturm, AMS President afternoon roundtable discussion on conservation I would like to announce that the 2011 annual issues. meeting of the American Malacological Society will Frank ‘Andy’ Anderson is hoping to get those folks be held in Pittsburgh, PA. Pittsburgh is home to the interested in cephalopods to come to Pittsburgh and Carnegie Museum of Natural History (and its world participate in a session dealing with these critters. class collection of freshwater and terrestrial We expect that folks interested in Recent and fossil mollusks) as well as Duquesne University, sitting cephalopods will get together and have a good time on a bluff overlooking the Monongahela River and discussing the biology, ecology, and evolution of the downtown area. The meeting will be held at this group. You can contact Andy at Duquesne University. There will be housing ([email protected]) if you are interested in this available in the student dorms and there is a nearby session. hotel for those desiring more plush accommodations. A meal plan will be available In addition to planned sessions, there will be through the University. opportunities for presentations at open session and there will be a poster session. The Carnegie The meeting will be held during 23-28 July. Even Museum, which is a short bus trip from Duquesne though we will be hundreds of miles from any University, will be available for attendees who wish marine shore, the timing was selected with marine to visit and use the collection. malacologists in mind. This time period will avoid any of the significant low tides, so it will have Page 1 American Malacological Society Newsletter Fall 2010 There are two field trips in the planning stages. One taxonomic groups or ecosystem types. However, trip will be studying the land snails of the region. studies on any other ecological aspect of biological This trip will be run by Tim Pearce. Tim is the invasions will also be welcome. Topics such as the curator of mollusks at the Carnegie and a diehard spread of invasive species into ecosystems, the land snail researcher. The second field trip will be biogeography and history of species introductions, led by Art Bogan, a noted unionid specialist. Art has and the community- or species-level impact of studied the rivers and lakes of western Pennsylvania biological invasions will also have an important for many years and is well qualified to lead this trip. coverage in the final conference program. In addition we will have an opening reception, the Contact: Jorge L. Gutiérrez always popular auction (which helps support E-mail: [email protected] student activities), and the annual banquet. Further For more information about this meeting, visit our details will be forthcoming, check the AMS website website (http://www.grieta.org.ar/biolief/). You can for details early in 2011. If anyone has any also follow us in Facebook for news and updates questions regarding the meeting please e-mail me at (http://www.facebook.com/?ref=home#!/pages/ ([email protected]). There are still opportunities to BIOLIEF-2011/126444150720221?ref=sgm). hold other special sessions. If you have one in mind, or a workshop, please let me know. Hope to see many of you in Pittsburgh. Charlie Sturm MEMBERS CONTRIBUTIONS President American Malacological Society Preliminary results of life history strategies of the freshwater snail genus Leptoxis (Cerithioidea: Pleuroceridae) from the southeastern United States Nathan Whelan, winner of the Melbourne Carriker OTHER UPCOMING MEETINGS student Research Grant AMS 2012 – Philadelphia, PA University of Alabama, Dept. of Biological June 16-21, 2012 Sciences, Box 870345, Tuscaloosa, AL 35487 Contributed by Gary Rosenberg Many systematic and ecological studies have overlooked the critically imperiled freshwater snails The 2012 AMS meeting will be held June 16 to 21 in the genus Leptoxis, and the genus has a long at the Crowne Plaza Hotel Philadelphia-Cherry Hill. history of taxonomic uncertainty (Goodrich 1922; The meeting coincides with the 200th anniversary Graf 2001). There are twelve extant Leptoxis festivities at the Academy of Natural Sciences of species; 13 are considered recently extinct. The Philadelphia, which is the birthplace of American round rocksnail (L. ampla), the painted rocksnail (L. malacology and conchology. The Conchologists of taeniata), and the plicate rocksnail (L. plicata) are America will meet at the same venue, June 19 to 24, currently listed as threatened or endangered under and some joint sessions are planned. the U.S. Endangered Species Act. The interrupted rocksnail (L. foreman), is known only to exist in captivity and in one population in Georgia’s Oostantula River which may already be extirpated BIOLIEF 2011 - 2nd World Conference on (Johnson and Evans 2001). In light of this, little is Biological Invasions and Ecosystem Functioning. known about the evolution and life history of Mar del Plata, Argentina Leptoxis. I am working on a complete systematic November 21-24, 2011. revision of Leptoxis to document the real biodiversity within the genus and to revise the Contributed by Jorge L. Gutiérrez taxonomy to reflect true evolutionary lineages. This BIOLIEF 2011 will be a forum for the presentation, will aide in conservation efforts of Leptoxis as it is discussion, and synthesis of research on biological impossible to conserve the biodiversity of this invasions in its broadest sense. The conference will genus if the true extent of Leptoxis biodiversity is place a particular emphasis on studies concerning unknown. One primary focus of this study is an the impact of invasive species on ecosystem analysis of life history strategies of the genus. functioning and/or services, irrespective of Intraspecific differences in life history traits such as Page 2 American Malacological Society Newsletter Fall 2010 egg clutch size, egg laying strategies, and the period biological reality. I documented the considerable of oviposition will likely provide novel insights into conchological variation within Leptoxis and other the evolution of Leptoxis and may aide in species pleurocerid genera (i.e. Io, Lithasia, Pleurocera, delineation (Brown 1983). Elimia) by taking 1,350 high quality pictures of A museum material (see Fig. 1 for an example). I also employed the analysis of type specimens through an ongoing project to create a full type catalog of every described North American pleurocerid. The variation within nominal species documented at FLMNH allowed me to make informed decisions concerning how to best study live animals in culture in regards to life history and the collection of tissues for molecular systematic analyses. Due to the inherent difficulties of studying life history strategies in the wild, I developed a unique culturing set-up at the Alabama Aquatic Biodiversity Center (AABC) in Marion, AL. Currently, nine of the twelve extant Leptoxis species are in culture at AABC. Each species has already laid eggs this breeding season, and additional Leptoxis species will be in culture before the end of the year for analysis during spring 2011. Two B populations of both L. ampla (see Fig. 1) and L. taeniata that show drastic morphological differences are being cultured in a uniform environment. Once juveniles of these populations are fully grown, their shell morphology will be analyzed to determine if conchological variation is due to differences in habitat or more likely due to genetic influences. Distinct interspecific differences in egg laying strategies are being documented within Leptoxis, and each nominal species demonstrates qualitative differences in the shape and formation of their respective egg clutches. Of the nine species analyzed thus far only L. plicata and L. arkansensis lay single eggs rather than clutches. Many species demonstrate quantitative differences in egg clutch size. There are also significant differences in fecundity between different age classes of L. Fig. 1: Two different specimens of Leptoxis ampla. Specimen A was collected from the main stem of the foremani, and females lay eggs in multiple years. As Cahaba River near Centerville, AL and represents the such—and contrary to the literature—Leptoxis is typical
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