| The
genus Apalone is North American in origin.
The genus contains only three species of medium sized
trionychids.
Apalone
ferox (Schneider, 1783)
Distribution:
USA. |
Apalone
mutica (Le Sueur, 1827) mutica
(Le Sueur, 1827)
calvata
(Webb, 1959)
Distribution:
USA. |
Apalone
spinifera (Le Sueur, 1827) spinifera
(Le Sueur, 1827)
aspera
(Agassiz, 1857)
ater
(Webb & Legler, 1960)
emoryi
(Agassiz, 1857)
guadalupensis
(Webb, 1962)
hartwegi
(Conant & Goin, 1941)
pallida
(Webb, 1962)
Distribution:
Canada
(spinifera), Mexico
(ater, emoryi) and USA
(aspera, emoryi, guadalupensis, hartwegi,
pallida, spinifera). |
|
|
| Literature |
Agassiz, L. 1857. Contributions to the natural history
of the United States of America. Vol. 1 & 2. Little,
Brown and Co., Boston, 643 pp. |
|
Babitt, L.H. 1936. Soft-shelled turtles in Vermont. Bull.
Boston Soc. Nat. Hist., 78: 10. |
|
Bagatto,B.P. & R.P. Henry. 1999. Exercise and forced
submergence in the pond slider (Trachemys scripta)
and softshell turtle (Apalone ferox): Influence
on bimodas gas excahnge, diving behavior and blood acid-base
status. J. Exp. Biol., 202: 267-278. |
|
Baur, G. 1888. Notes on the American Trionychidae. Amer.
Nat., 22(264): 1121-1122. |
| Behler,
J.L. & F.W. King. 1979. The Audubon Society Field
Guide to North American Reptiles & Amphibians. Alfred
A. Knopf, New York, 743 pp. |
|
Bently, P.J. & K. Schmidt-Nielsen. 1970. Comparison
of water exchange in two aquatic turtles, Trionyx
spinifer and Pseudemys scripta. Comp. Biochem.
Physiol., 32: 363-365. |
| Black,
J.H. & S.L. Shannon. 1978. Geographic Distribution.
Trionyx spiniferus hartwegi. Herpetol. Rev.,
9(4): 142. |
|
Breckenridge, W.J. 1955. Observations on the life history
of the soft-shelled turtle Trionyx ferox, with
especial reference to growth. Copeia, 1955: 5-9. |
|
Brown, B.C. 1967. Trionyx muticus muticus in
Texas panhandle. Southwest. Nat., 12(4): 487. |
|
Brown, W.S. 1968. A northern range extension for Trionyx
spiniferus emoryi in New Mexico. Southwest. Nat.,
13(1): 106-107. |
| Cochran,
P.A. & D.R. McConville. 1983. Feeding by Trionyx
spiniferus in Backwaters of the Upper Mississippi
River. J. Herpetol., 17(1): 82-86. |
|
Conant, R. 1961. The softshell turtle, Trionyx spinifer,
introduced and established in New Jersey. Copeia, 1961(3):
355-356. |
|
Conant, R. & C.J. Goin. 1948. A new subspecies of
soft-shelled turtle from the central United States, with
comments on the application of the name Amyda.
Occ. Pap. Mus. Zool. Univ. Michigan, 510: 1-19. |
|
Crenshaw, J.W., Jr. & M.N. Hopkins, Jr. 1955. The
relationships of the soft-shelled turtles Trionyx
ferox ferox and Trionyx ferox aspera. Copeia,
1955(1): 13-23. |
| Deitz,
D.C. & D.R. Jackson. 1979. Use of American Alligator
Nests by Nesting Turtles. J. Herpetol., 13(4): 510-512. |
| Dobie,
J.L., C.J. Leary & J. Golden. 1996. Geographic Distribution.
Apalone ferox. Herpetol. Rev., 27(2): 87. |
|
Doody, J.S. 1995. A comparative nesting study of two syntopic
species of softshell turtles (Apalone mutica
and Apalone spinifera) in southestern Louisiana.
Unpubl. ms. thesis, Southeastern Louisiana, Univ. |
| Doody,
J.S. 1999. A Test of the Comparative Influences of Constant
and Fluctuating Incubation Temperatures on Phenotypes
of Hatchling Turtles. Linnaeus Fund Research Report. Chel.
Conserv. Biol., 3(3): 529-531. |
| Doody,
J.S., R.E. Anderson & C.S. Richardson. 1996. Geographic
Distribution. Apalone spinifera pallida. Herpetol.
Rev., 27(3): 150. |
|
Dunson, W.A. 1967. Relationship between length and weight
in the spiny softshell turtle. Copeia, 1967: 483-484. |
| Ernst,
C.H. & R.W. Barbour. 1989. Turtles of the World. Smithsonian
Institution Press, Washington, D.C., and London, 314 pp. |
| Ernst,
C.H., J.E. Lovich & R.W. Barbour. 1994. Turtles of
the United States and Canada. Smithsonian Inst. Press,
Washington, 578 pp. |
| Ferner,
J.W., C. Lorentz, M. Obermeyer & P.J. Krusling. 2000.
Geographic Distribution. Apalone spinifera spinifera.
Herpetol. Rev., 31(1): 51. |
| Galois,
P., M. Léveillé, L. Bouthillier, C. Daigle
& S. Parren. 2002. Movement Patterns, Activity, and
Home Range of the Eastern Spiny Softshell Turtle (Apalone
spinifera) in Northern Lake Champlain, Québec,
Vermont. J. Herpetol., 36(3): 402-411. |
|
Geoffroy Saint-Hilaire, E. 1809. Memoire sur les tortues
molles, nouveau genre sous le nom de Trionyx, et
sur la formation des carapaces. Ann. Mus. Hist. Nat. Paris,
14: 1-20. |
|
Graham, T.E. 1989. Map and softshell turtles from Vermont.
Bull. Maryland Herp. Soc., 25: 35-39. |
| Graham,
T.E. & C.B. Cobb. 1998. Sexual Dimorphism of Neonate
Eastern Spiny Softshells, Apalone spinifera spinifera.
Chel. Conserv. Biol., 3(1): 111-112. |
| Graham,
T.E. & A.A. Graham. 1997. Ecology of the Eastern Spiny
Softshell, Apalone spinifera spinifera, in the
Lamoille River, Vermont. Chel. Conserv. Biol., 2(3): 363-369. |
| Iverson,
J.B. 1992. A Revised Checklist with Distribution Maps
of the Turtles of the World. Richmond, IN: Privately printed,
363 pp. |
| Iverson,
J.B. & P.E. Moler. 1997. The Female Reproductive Cycle
of the Florida Softshell Turtle (Apalone ferox).
J. Herpetol., 31(3): 399-409. |
| Jensen,
J.B. 1998. Geographic Distribution. Apalone spinifera
aspera. Herpetol. Rev., 29(1): 50. |
| Jensen,
J.B. 1998. Bait Preferences of Southeastern United States
Coastal Plain Riverine Turtles: Fish or Fowl? Chel. Conserv.
Biol., 3(1): 109-111. |
| King,
R.B. 2000. Analyzing the Relationship between Clutch Size
and Female Body Size in Reptiles. J. Herpetol., 34(1):
148-150. |
|
Lardie, R.L. 1963. A length record for Trionyx spinifer
emoryi. Herpetologica, 19(2): 150. |
|
Lardie, R.L. 1964. Pugnacious behavior in the softshell
Trionyx spinifer pallidus and implications of
territoriality. Herpetologica, 20(4): 281-284. |
| Lardie,
R.L. 2001. Geographic Distribution. Apalone spinifera
hartwegi. Herpetol. Rev., 32(2): 116. |
|
Lesueur, C.A. 1827. Note sur deux especes de tortues du
genre Trionyx Gff. St. H. Mem. Mus. Hist. Nat.
Paris, 15: 257-268. |
| Lindeman,
P.V. 2001. Geographic Distribution. Apalone mutica
calvata. Herpetol. Rev., 32(4): 273. |
|
Lovrity, J. & N. Denman. 1964. An eastern spiny soft-shelled
turtle from Québec Province. Canadian Field-Naturarlist,
78: 63-64. |
| McAllister,
C.T. 2001. Geographic Distribution. Apalone spinifera
pallida. Herpetol. Rev., 32(1): 56. |
| McAllister,
C.T. & T.L. Eddings. 2001. Geographic Distribution.
Apalone mutica mutica. Herpetol. Rev., 32(4):
274. |
| McCafferty,
K.A. & A.M. Mann. 1996. Geographic Distribution. Apalone
mutica. Herpetol. Rev., 27(1): 31. |
| Nebeker,
A.V. & R.B. Bury. 2001. Response of Juvenile Softshell
Turtles (Apalone mutica) in a Thermal Gradient.
Chel. Conserv. Biol., 4(1): 162-165. |
|
Neill, W.T. 1951. Taxonomy of North American soft-shelled
turtles, genus Amyda. Publ. Res. Div. Ross Allen's
Rept. Inst., 1(2): 7-24. |
| Plummer,
M.V. 2001. Trionyx muticus. Foraging. Herpetol.
Rev., 32(4): 250. |
| Plummer,
M.V. & C.C. Burnley. 1997. Behavior, Hibernacula,
and Thermal Relations of Softshell Turtles (Trionyx
spiniferus) Overwintering in a Small Stream. Chel.
Conserv. Biol., 2(4): 489-493. |
| Plummer,
M.V. & D.B. Farrar. 1981. Sexual Dietary Differences
in a Population of Trionyx muticus. J. Herpetol.,
15(2): 175-179. |
| Plummer,
M.V., N.E. Mills & S.L. Allen. 1997. Activity, Habitat,
and Movement Patterns of Softshell Turtles (Trionyx
spiniferus) in a Small Stream. Chel. Conserv. Biol.,
2(4): 514-520. |
| Plummer,
M.V., C.E. Shadrix & R.C. Cox. 1994. Thermal Limits
of Incubation in Embryos of Softshell Turtles (Apalone
mutica). Chel. Conserv. Biol., 1(2): 141-144. |
|
Plummer, M.V. & H.W. Shirer. 1975. Movement patterns
in a river population of the softshell turtle, Trionyx
muticus. J. Herpetol., 11: 87-90. |
| Pritchard,
P.C.H. 2001. Observations on Body Size, Sympatry, and
Niche Divergence in Softshell Turtles (Trionychidae).
Chel. Conserv. Biol., 4(1): 5-27. |
|
Rafinesque, C.S. 1832. Description of two new genera of
softshell turtles of North America. Atlantic J. Friend
Knowledge, 1(2): 64-65. |
|
Robinson, K.M. & G.G. Murphy. 1978. The reproductive
cycle of the eastern spiny softshell turtle (Trionyx
spiniferus spiniferus). Herpetologica, 34: 137-140. |
|
Schneider, J.G. 1783. Allgemeine Naturgeschichte der Schildkröten,
nebst einem System. Verzeichnisse der einzelnen Arten.
Leipzig, 364 pp. |
|
Schwartz, A. 1956. The relationships and nomenclature
of the soft-shelled turtles (genus Trionyx) of
the south eastern United States. Charleston Mus. Leaflet,
26: 1-21. |
| Smith,
J.R., C. Brown & O.W. Thornton, Jr. 1996. Geographic
Distribution. Apalone mutica mutica. Herpetol.
Rev., 27(1): 31. |
| Somers,
A.B., J.C. Beane & D.W. Herman. 2000. Geographic Distribution.
Apalone spinifera spinifera. Herpetol. Rev.,
31(3): 183-184. |
|
Stejneger, L. 1944. Notes on the American soft-shelled
turtles (family Trionychidae). Univ. Kansas Publ. Mus.
Nat. Hist., 13(10): 429-611. |
|
Stejneger, L. 1944. Notes on the American soft-shelled
turtles, with special reference to Amyda agassizii.
Bull. Mus. Comp. Zool., 94(1): 1-75. |
| Stevenson,
D.J. & B.J. Platt. 1999. Geographic Distribution.
Apalone ferox. Herpetol. Rev., 30(1): 51. |
|
Stockwell, G.A. 1888. Notes upon soft-shelled turtles
and the anatomical vagaries of Aspidonectes spinifer.
J. Comp. Med. surg., 9(1): 28-42. |
|
Stone, P.A., J.L. Dobie & R.P. Henry. 1992. Cutaneous
surface area and bimodal respiration in soft-shelled (Trionyx
spiniferus), stinkpot (Sternotherus odoratus),
and mud turtles (Kinosternon subrubrum). Physiol.
Zool., 65: 311-330. |
|
Stone, P.A., J.L. Dobie & R.P. Henry. 1992. The effect
of aquatic oxygen levels on diving and ventilatory behavior
in soft-shelled (Trionyx spiniferus), stinkpot
(Sternotherus odoratus), and mud turtles (Kinosternon
subrubrum). Physiol. Zool.,65: 331-345. |
| Tucker,
J.K., R.J. Cosgriff, J.B. Towey. 2000. Geographic Distribution.
Apalone mutica. Herpetol. Rev., 31(2): 110. |
| Vitt,
C. 2000. Geographic Distribution. Apalone spinifera.
Herpetol. Rev., 31(4): 252. |
| Walley,
H.D. 1995. Geographic Distribution. Apalone spinfera.
Herpetol. Rev., 26(1): 43. |
| Webb,
R.G. 1959. Description of a New Softshell Turtle From
the Southeastern United States. Univ. Kansas Publ. Mus.
Nat. Hist., 11(9): 517-525. |
|
Webb, R.G. 1960. Type and type locality of the Gulf Coast
spiny softshell turtle, Trionyx spinifer asper (Agassiz).
Breviora, 129: 1-8. |
|
Webb, R.G. 1962. North American Recent soft-shelled turtles
(Family Trionychidae). Univ. Kansas Publ. Mus. Nat. Hist.,
13(10): 429-611. |
| Webb,
R.G. 1973. Trionyx ater. Cat. Amer. Amphib. Rept.,
137: 1. |
| Webb,
R.G. 1973. Trionyx ferox. Cat. Amer. Amphib.
Rept., 138: 1-3. |
| Webb,
R.G. 1973. Trionyx muticus. Cat. Amer. Amphib.
Rept., 139: 1-2. |
| Webb,
R.G. 1973. Trionyx spiniferus. Cat. Amer. Amphib.
Rept., 140: 1-4. |
| Webb,
R.G. & J.M. Legler. 1960. A New Softshell Turtle (Genus
Trionyx) from Coahuila, Mexico. Univ. Kansas
Sci. Bull., 40(2): 21-30. |
| Webb,
R.G. & R.W. Axtell. 1996. Geographic Distribution.
Trionyx spiniferus pallidus. Herpetol. Rev.,
27(4): 210. |
| Williams,
T.A. & J.L. Christiansen. 1981. The Niches of Two
Sympatric Softshell Turtles, Trionyx muticus
and Trionyx spiniferus, in Iowa. J. Herpetol.,
15(3): 303-308. |
|
Winokur, R.M. 1968. The morphology and relationships of
the soft-shelled turtles of the Cuatro Ciénegas
Basin, Coahuila, Mexico. M.S. Thesis, Arizona State Univ.,
ix + 88 pp. |
|
Wyman, J. 1851. On the shell and sternum of Trionyx
ferox. Proc. Boston Soc. Nat. Hist., 4: 10. |
| Zoologischer
Garten Frankfurt. 1992. Erstmals Weichschildkröten
im Exotarium geschlüpft. DATZ, 45(1): 10. |
|