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
A study area of approximately 150,000 km2, including Delaware, Maryland, New Jersey, eastern Pennsylvania and the West Virginia panhandle... ›› more
Volume 5, by Dillon, Kohl, Winters, Pyron, Reeves, Watters, Cummings, Bailey and Whitman reports the results of a comprehensive freshwater gastropod survey conducted in the drainages of the Ohio, Cumberland, and Tennessee Rivers. We provide full-color figures, a dichotomous key, range maps, and natural history notes for all 80 species and 19 subspecies of freshwater snails recovered, updating the taxonomy to modern standards. A new continent-scale biogeographic analysis is offered, and the objective system of abundance ranking by incidence categories we proposed in Volume 1 is expanded and updated. Three new species of cave-dwelling hydrobioid gastropods are described in the appendix.
Volumes 6 and 7 are collections of essays, originally
appearing
in blog form 2019 - 2023, edited and rearranged
thematically. Volume
6 collects 32 essays on the systematics
and
evolution of the pleurocerid and hydrobioid snails of North
America and Volume 7 comprises
36 essays on the ampullariids, viviparids, and pulmonates.
These
volumes are essential companions to support
and
augment the scientific results reported in Volumes 1 and 5.
The total retail price for these three volumes if purchased
individually
would be $158.68. But we have arranged a
special package
deal with the print shop
for friends of the FWGNA project, available online.
Hit
the link below to "buy yours now." That will take you to my
author profile page at bookbaby.com. At the bottom of my
profile page you will find seven "titles by this author." Hit
the links for Volume 5, Volume 6, and Volume 7 in
turn, add each of those titles to your shopping
cart separately, and apply the coupon
code FWGNA3. Then proceed to checkout. Your
price will be discounted to $99.95 for the set ...
a bargain!
FWGNA Volumes 1-4
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, as well as Volume
5 on the Ohio, Cumberland and Tennessee drainages, published
subsequently.
The total retail price for the first four volumes in the FWGNA series,
if purchased individually, would be
$145.80. But we have continued the special package
deal that we first arranged in 2019 for friends of the FWGNA
project, available online.
Hit
the link below to "buy yours now." That will take you to my
author profile page on the printer's website. At the bottom
of my
profile page you will find seven "titles by this author," including the
first
four books we published in 2019 as well as the three we just published
in 2023. Hit the links to Volume 1, Volume 2, Volume 3, and
Volume
4 in turn, add each of those titles to your shopping
cart, and apply the coupon
code FWGNA4. Then proceed to checkout.
Your price will be discounted to $99.95 for the set.
FWGNA Circulars
2. Dillon, R.T., Jr. (2020) The four subspecies of Pleurocera troostiana (Lea 1838), with synonymy. FWGNA Circular 2: 1 - 5. [pdf] This is a summary document for the observations, arguments, and hypotheses I advanced in a series of six blog posts to the FWGNA Blog:
- On The Trail of Professor Troost [6Dec19]
- CPP Diary: The Many Faces of Professor Toost [7Jan20]
- Huntsville Hunt [15Apr20]
- A House Divided [10May20]
- What is Melania edgariana? [5June20]
- The Return of Captain Lyon [6July20]
- Fun With Campeloma! [7May21]
5. 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 posts:
- Cytoplasmic Male Sterility in Physa! [9June22]
- Cytoplasmic Male Sterility in the Snake River Physa [7Aug24]
- Just 125 Species of Pyrgulopsis in the American West [7Sept22]
- The Mystery Snail Color Genetics Project [6June23].
- The type locality of Melania laqueata [18Sept24]
- Widespread hybridization between Pleurocera laqueata and P. troostiana in streams of the Tennessee/Cumberland [15Oct24]
- Reticulate evolution in the North American Pleuroceridae [12Nov24]
- The taxonomy of the Pleurocera laqueata/troostiana complex. Part I, A – La. [10Dec24]
- The taxonomy of the Pleurocera laqueata/troostiana complex. Part II, Ly - Z. [14Jan25]