The Atlantic drainages of Georgia, comprising approximately 40% of the waters of the state, are presently covered... ›› more
The four ecoregions of North Carolina drain toward the Atlantic through six major river systems... ›› more
Although perhaps not as environmentally heterogeneous as neighboring states, South Carolina does include... ›› more
The survey reported here is focused on the eastern 75% of the state, draining from the Blue Ridge to the Atlantic... ›› more
All waters draining into the Tennessee River above the Alabama line, including SW Virginia, W North Carolina, and N Georgia... ›› more
A study area of approximately 150,000 km2, including Delaware, Maryland, New Jersey, eastern Pennsylvania and the West Virginia panhandle... ›› more
Volume
1, by Dillon, Ashton, Reeves, Smith, Stewart and Watson, reports the
results of a comprehensive freshwater gastropod survey conducted in
Atlantic drainages from Georgia to the New York line. We provide
full-color figures, a dichotomous key, range maps, and natural history
notes for all 70 species and subspecies of freshwater snails recovered,
updating the taxonomy to modern standards. A new, objective system of
conservation status ranking is proposed, and a new species of
pleurocerid snail described in the appendix.
Volumes 2, 3, and 4 are collections of essays, originally appearing
in blog form 2003 – 2019, now edited and rearranged
thematically. Volume 2 collects 29 essays on the systematics
and
evolution of the freshwater pulmonates of North America, Volume 3
comprises 37 essays on the systematics and evolution of the
prosobranchs, and Volume 4 collects 38 essays reviewing ecological and
biogeographical themes. These volumes are intended to support
and
augment the scientific results reported in Volume 1.
The total retail price for the four volumes purchased individually is
$145.80. But we have arranged a special package deal with the publisher
for friends of the FWGNA project, available online.
Hit
the link below to "buy yours now." That will take you to my
author's profile page at bookbaby.com. At the bottom of my
profile page you will find four "titles by this author." Hit
each
of those links in turn, and add each of those titles to your shopping
cart, separately. Then proceed to checkout. At the
checkout
page you will find a box to enter a "coupon code." Apply the coupon
code FWGNA4 to each of
the four volumes. This will discount your price to
$99.95 for the set ... a bargain!
Buy yours
now!
FWGNA Circulars
Dillon, R.T., Jr. (2012) Toward the scientific ranking of conservation status. FWGNA Circular 1: 1 - 13. [pdf] The data are obsolete, but the introduction and methods remain important.
Dillon, R. T., Jr. (2018) Welcome to the mystery snail color genetics project! FWGNA Circular 7: 1 - 13. [pdf] In 2018 I initiated a crowdsourced effort to work out the inheritance of color polymorphism in the common aquarium pet, Pomacea diffusa. This circular is a hardcopy version of an 11-page website I put online to guide potential volunteers through the experimental design. For more, see my blog post of [6June23].
Dillon, R.T., Jr. (2020) The four subspecies of Pleurocera troostiana (Lea 1838), with synonymy. FWGNA Circular 2: 1 - 5. [pdf]
Dillon, R.T., Jr. (2021) Two keen Campeloma quizzes. FWGNA Circular 3: 1 - 3. [pdf] Mostly just fun, but there's a serious subtext. For the context, see my blog post of [7May21].
Liu, H-P. and R.T. Dillon, Jr. (2021) Resolving the species status of the Surprise Valley Pyrg (Pyrgulopsis gibba) and Vinyard Pyrg (Pyrgulopsis vinyardi). Report to Stantec Environmental Consulting. FWGNA Circular 6: 1 - 5. [pdf] For background, see my blog post of [7Sept22].
Dillon, R.T., Jr. (2022) The biogeography of North American freshwater gastropods, v1.0. FWGNA CIrcular 4: 1 - 5. [pdf] Originally published online in 2019, and rendered obsolete in 2022 by the publication of biogeography v2.0. But the methodology remains interesting.
Wethington, A.R., J.M. Rhett, and R.T. Dillon, Jr. (2022) Allozyme, 16S, and CO1 sequence divergence among populations of the cosmopolitan freshwater snail, Physa acuta. FWGNA Circular 5: 1 - 36. [pdf] Previously unpublished, this manuscript reports the first evidence of cytoplasmic male sterility in Physa. For more, see my blog post of [9June22].