Chrysemys picta (painted turtle)
Index
- Pictures
- Identity
- Summary of Invasiveness
- Taxonomic Tree
- Notes on Taxonomy and Nomenclature
- Description
- Distribution
- Distribution Table
- History of Introduction and Spread
- Introductions
- Risk of Introduction
- Habitat
- Habitat List
- Biology and Ecology
- Climate
- Latitude/Altitude Ranges
- Air Temperature
- Water Tolerances
- Means of Movement and Dispersal
- Pathway Causes
- Impact Summary
- Risk and Impact Factors
- Uses List
- Detection and Inspection
- Similarities to Other Species/Conditions
- Prevention and Control
- Gaps in Knowledge/Research Needs
- References
- Principal Source
- Contributors
- Distribution Maps
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Top of pageIdentity
Top of pagePreferred Scientific Name
- Chrysemys picta Schneider
Preferred Common Name
- painted turtle
Local Common Names
- Germany: Zierschildkröte
Summary of Invasiveness
Top of pageC. picta is an aquatic turtle native to North America popular with pet fanciers around the world. The pet trade is the most common mode of invasion pathway for this species, as individuals escape from their enclosures or when people release them intentionally when they are tired of caring for their pet, when their animals are sick, or to establish new populations. C. picta has been introduced to Europe (Kraus 2009), parts of the United States (Kraus 2009), and in Asia in Indonesia and Philippine Islands (Uetz and Hosek, 2015) but evidence of impact is lacking in the literature. C. picta is listed as Least Concern in the IUCN Red List (IUCN, 2016).
Taxonomic Tree
Top of page- Domain: Eukaryota
- Kingdom: Metazoa
- Phylum: Chordata
- Subphylum: Vertebrata
- Class: Reptilia
- Order: Testudines
- Family: Emydidae
- Genus: Chrysemys
- Species: Chrysemys picta
Notes on Taxonomy and Nomenclature
Top of pageBased on colour pattern and morphology (Ernst and Lovich, 2009), there are three currently recognized subspecies of C. picta (Uetz and Hosek, 2015): the western painted turtle, C. picta bellii (Gray, 1831); the midland painted turtle, C. picta marginata (Agassiz, 1857), and the eastern painted turtle, C. picta picta (Schneider, 1783). Based on phylogenetic analysis using mitochondrial DNA (mtDNA), a former fourth subspecies, the southern painted turtle, C. dorsalis (Agassiz, 1857), was elevated to species status (Starkey et al., 2003), however the taxonomy of C. dorsalis remains debatable (Uetz and Hosek, 2015).
Description
Top of pageC. picta is a small (up to 25.4 cm carapace length) turtle that is olive to black with yellow and red borders along the scute seams and red bars or crescents on the marginal scutes (Ernst and Lovich, 2009), giving it the common name ‘painted turtle’. The carapace is smooth and oval, and some individuals may have a red or yellow mid-dorsal stripe (Ernst and Lovich, 2009). The hingeless plastron is yellow with black or red to brown blotches, and the neck, legs and tail have yellow and red stripes (Ernst and Lovich, 2009).
Distribution
Top of pageC. picta is the only native transcontinental turtle species in North America. It occurs from southern British Columbia eastward to Nova Scotia in Canada, and Oregon southeastward to southern Georgia in the USA (Ernst and Lovich, 2009), and with scattered southwestern populations in Arizona, Colorado and Utah (Lovich et al., 2014).
C. picta dorsalis, originally described from Louisiana, was elevated to species status (as C. dorsalis, according to Starkey et al., 2003) but records of its occurrence are included with C. picta s.s. in the Distribution Table and maps.
C. picta has been introduced to Europe (Kraus 2009) in Austria (Kaltenegger, 2006), Germany (Podloucky, 1998; Fritz and Lehmann, 2002), the UK (Swanton, 1928; Taylor, 1948, 1963; Fitter, 1959; Frazer, 1964; Beebee and Griffiths, 2000; Arnold and Ovenden, 2002), Malta (Despott, 1913) and Spain (Mateo, 1997; Barbadillo et al., 1999; Pleguezuelos, 2004; Rhodin et al. 2010).
Although native to many states of the USA, there have also been introductions via the pet trade (Kraus 2009) in Arizona (Hulse, 1980; Jennings, 1987b; Lazaroff et al., 2006), California (Banta and Morafka, 1966; Bury and Luckenbach, 1976; Stebbins, 1985; Jennings, 1987a, 2004; Holland, 1994; Spinks et al., 2003), Colorado (Rodeck, 1948; Livo et al., 1998), Florida (King and Krakauer, 1966; Bartlett, 1967; Iverson and Etchberger, 1989; King and Burke, 1989; Krysko et al., 2011), Illinois (Dancik, 1974) and New Mexico (Stuart, 2000, 2001).
C. picta has also been introduced to Indonesia and the Philippine Islands (Uetz and Hosek, 2015).
Distribution Table
Top of pageThe distribution in this summary table is based on all the information available. When several references are cited, they may give conflicting information on the status. Further details may be available for individual references in the Distribution Table Details section which can be selected by going to Generate Report.
Last updated: 17 Dec 2021Continent/Country/Region | Distribution | Last Reported | Origin | First Reported | Invasive | Reference | Notes |
---|---|---|---|---|---|---|---|
Africa |
|||||||
Zambia | Present | Introduced | |||||
Asia |
|||||||
Indonesia | Present | Introduced | |||||
Philippines | Present | Introduced | |||||
Europe |
|||||||
Austria | Absent, Formerly present | Introduced via the pet trade at least 2 times without any current evidence of establishment | |||||
Germany | Absent, Formerly present | Introduced intentionally and via the pet trade at least 3 times, uncertain whether established | |||||
Malta | Absent, Formerly present | 1910 | Introduced intentionally | ||||
Spain | Present, Localized | Introduced | Invasive | Introduced via the pet trade at least 4 times | |||
United Kingdom | Absent, Formerly present | 1905 | Introduced intentionally and via the pet trade at least 4 times | ||||
North America |
|||||||
Canada | Present | Present based on regional distribution. | |||||
-Alberta | Present | Native | |||||
-British Columbia | Present | Native | |||||
-Manitoba | Present | Native | |||||
-New Brunswick | Present | Native | |||||
-Nova Scotia | Present | Native | |||||
-Ontario | Present | Native | |||||
-Quebec | Present | Native | |||||
-Saskatchewan | Present | Native | |||||
Mexico | Present | Native | |||||
United States | Present | Present based on regional distribution. | |||||
-Alabama | Present | Native | |||||
-Arizona | Present | Native | Limited native range. Introductions via the pet trade at least 5 times without any current evidence of establishment | ||||
-Arkansas | Present | Native | |||||
-California | Absent, Formerly present | Introduced intentionally and via the pet trade at least 7 times, uncertain if established; First reported: 1974, 1990s | |||||
-Colorado | Present | Native | Limited native range. Introduced via the pet trade at least 3 times without any current evidence of establishment | ||||
-Connecticut | Present | Native | |||||
-Delaware | Present | Native | |||||
-District of Columbia | Present | Native | |||||
-Florida | Absent, Formerly present | Introduced via the pet trade at least 5 times without any current evidence of establishment; First reported: 1933, 1938, 1964, 1983, 2007 | |||||
-Georgia | Present | Native | |||||
-Idaho | Present | Native | |||||
-Illinois | Present | Native and Introduced | Native and introduced via the pet trade | ||||
-Indiana | Present | Native | |||||
-Iowa | Present | Native | |||||
-Kansas | Present | Native | |||||
-Kentucky | Present | Native | |||||
-Louisiana | Present | Native | |||||
-Maine | Present | Native | |||||
-Maryland | Present | Native | |||||
-Massachusetts | Present | Native | |||||
-Michigan | Present | Native | |||||
-Minnesota | Present | Native | |||||
-Mississippi | Present | Native | |||||
-Missouri | Present | Native | |||||
-Montana | Present | Native | |||||
-Nebraska | Present | Native | |||||
-New Hampshire | Present | Native | |||||
-New Jersey | Present | Native | |||||
-New Mexico | Present | Native | Limited native range. Introduced via the pet trade at least 2 times without any current evidence of establishment | ||||
-New York | Present | Native | |||||
-North Carolina | Present | Native | |||||
-North Dakota | Present | Native | |||||
-Ohio | Present | Native | |||||
-Oklahoma | Present | Native | |||||
-Oregon | Present | Native | |||||
-Pennsylvania | Present | Native | |||||
-Rhode Island | Present | Native | |||||
-South Carolina | Present | Native | |||||
-South Dakota | Present | Native | |||||
-Tennessee | Present | Native | |||||
-Texas | Present | Native | |||||
-Utah | Present | Native | |||||
-Vermont | Present | Native | |||||
-Virginia | Present | Native | |||||
-Washington | Present | Native | |||||
-West Virginia | Present | Native | |||||
-Wisconsin | Present | Native | |||||
-Wyoming | Present | Native |
History of Introduction and Spread
Top of pageC. picta has been introduced, without evidence of establishing, to Austria (Kaltenegger, 2006), Germany (Podloucky, 1998; Fritz and Lehmann, 2002), the UK as early as 1905 (Swanton, 1928; Taylor, 1948, 1963; Fitter, 1959; Frazer, 1964; Beebee and Griffiths, 2000; Arnold and Ovenden, 2002), Malta as early as the 1910s (Despott, 1913), Arizona in the 1960s and 2002 (Hulse, 1980; Jennings, 1987b; Lazaroff et al., 2006), California in 1974 and the 1990s (Banta and Morafka, 1966; Bury and Luckenbach, 1976; Stebbins, 1985; Jennings, 1987a, 2004; Holland, 1994; Spinks et al., 2003), Colorado in 1947 and 1993 (Rodeck, 1948; Livo et al., 1998), Florida in 1933, 1938, 1964, 1983 and 2007 (King and Krakauer, 1966; Bartlett, 1967; Iverson and Etchberger, 1989; King and Burke, 1989; Krysko et al., 2011), Illinois in 1971 (Dancik, 1974), and New Mexico in 1998 and 2000 (Stuart, 2000, 2001).
This species has been introduced at least four times via the pet trade to Spain, where it has successfully become established (Mateo, 1997; Barbadillo et al., 1999; Pleguezuelos, 2004; Kraus, 2009; Rhodin et al. 2010).
Introductions
Top of pageIntroduced to | Introduced from | Year | Reason | Introduced by | Established in wild through | References | Notes | |
---|---|---|---|---|---|---|---|---|
Natural reproduction | Continuous restocking | |||||||
Austria | Intentional release (pathway cause); Pet trade (pathway cause) | No | No | Kaltenegger (2006); Kraus (2009) | Introduced via the pet trade at least 2 times without any current evidence of establishment | |||
California | 1974, 1990s | Intentional release (pathway cause); Pet trade (pathway cause) | No | No | Banta and Morafka (1966); Bury and Luckenbach (1976); Holland (1994); Jennings (1987); Jennings (2004); Kraus (2009); Stebbins (1985) | Introduced intentionally and via the pet trade at least 7 times, uncertain if established | ||
Colorado | 1947, 1993 | Intentional release (pathway cause); Pet trade (pathway cause) | No | No | Kraus (2009); Livo et al. (1998); Rodeck (1948) | Introduced via the pet trade at least 3 times without any current evidence of establishment | ||
Florida | 1933 - 2007 | Intentional release (pathway cause); Pet trade (pathway cause) | No | No | Bartlett (1967); Iverson and Etchberger (1989); King and Burke (1989); King and Krakauer (1966); Kraus (2009); Krysko et al. (2011) | Introduced via the pet trade at least 5 times without any current evidence of establishment (1933, 1938, 1964, 1983, 2007) | ||
Germany | Intentional release (pathway cause); Pet trade (pathway cause) | No | No | Fritz and Lehmann (2002); Kraus (2009); Podloucky (1998) | Introduced intentionally and via the pet trade at least 3 times, uncertain if established | |||
Hawaii | 1960s, 2002 | Intentional release (pathway cause); Pet trade (pathway cause) | No | No | Hulse (1980); Jennings (1987); Kraus (2009); Lazaroff et al. (2006) | Introduced via the pet trade at least 5 times without any current evidence of establishment | ||
Illinois | 1971 | Intentional release (pathway cause); Pet trade (pathway cause) | No | No | Dancik (1974) | Introduced via the pet trade | ||
Indonesia | Indonesia | No | No | Uetz and Hosek (2015) | No other information provided | |||
Malta | 1910 | Intentional release (pathway cause); Pet trade (pathway cause) | No | No | Despott (1913); Kraus (2009) | Introduced intentionally | ||
New Mexico | 1998, 2000 | Intentional release (pathway cause); Pet trade (pathway cause) | No | No | Kraus (2009); Stuart (2000); Stuart (2001) | Introduced via the pet trade at least 2 times without any current evidence of establishment | ||
Philippines | Philippines | No | No | Uetz and Hosek (2015) | No other information provided | |||
Spain | Pet trade (pathway cause) | Yes | No | Barbadillo et al. (1999); Kraus (2009); Mateo (1997); Pleguezuelos (2004) | Introduced via the pet trade at least 4 times | |||
UK | 1905 | Intentional release (pathway cause); Pet trade (pathway cause) | No | No | Arnold and Ovenden (2002); Beebee and Griffiths (2000); Fitter (1959); Frazer (1964); Kraus (2009); Swanton (1928); Taylor (1948); Taylor (1963) | Introduced intentionally and via the pet trade at least 4 times |
Risk of Introduction
Top of pageC. picta is an aquatic turtle species with beautiful colouration, commonly known as ‘painted turtle’, and is popular with pet fanciers around the world. The pet trade is the most common invasion pathway for this species, as individuals escape from their enclosures or are intentionally released by people tired of caring for their pet, or when their animals are sick, or to establish new populations.
Habitat
Top of pageC. picta prefers slow moving shallow fresh water with soft bottom, vegetation and basking sites, but it is also tolerant of brackish water and polluted fresh water (Ernst and Lovich, 2009). It avoids fast moving water (Ernst and Lovich, 2009).
Habitat List
Top of pageCategory | Sub-Category | Habitat | Presence | Status |
---|---|---|---|---|
Multiple | ||||
Other | Ice | Principal habitat | Natural | |
Terrestrial | ||||
Freshwater | ||||
Freshwater | Lakes | Principal habitat | Natural | |
Freshwater | Reservoirs | Principal habitat | Natural | |
Freshwater | Rivers / streams | Principal habitat | Natural | |
Freshwater | Ponds | Principal habitat | Natural | |
Brackish | Estuaries | Secondary/tolerated habitat | Natural |
Biology and Ecology
Top of pageGenetics
C. picta has 50 chromosomes (Stock, 1972; Killebrew, 1977a; DeSmet, 1978).
Reproductive biology
Females attain a larger size than males. Males have longer foreclaws to hold onto females during reproduction, a longer and thicker tail, and the cloaca is posterior to the carapace (Ernst and Lovich, 2009). Males actively look for females, and so are more inclined to disperse to new water bodies (Tuberville et al., 1996). Males typically mature in 2-4 years or between 7 and 9.5 cm plastron length (PL), whereas females typically mature in 6-10 years or 9.7–12.8 cm PL (Ernst and Lovich, 2009). Courtship and mating typically occur from March through June, but can sometimes last until September (Ernst and Lovich, 2009). A female can store viable sperm for up to three years and a clutch may have multiple male parents (Pearse et al., 2001a). Oviposition of up to 23 eggs typically occurs from April through July (Dundee and Rossman, 1989; Trauth et al., 2004). Females can oviposit up to five clutches in a year (Ernst and Lovich, 2009).
Physiology and phenology
C. picta can tolerate cold temperatures, but its northernmost distribution is likely determined by exposure to subfreezing temperatures (St. Claire and Gregory, 1990). The critical thermal minimum for C. picta is about -2°C (Ernst and Lovich, 2009); however, Diamond (1989) reported survival as low as -8°C.
Longevity
C. picta can live between 30 and 40 years in the wild, and possibly up to 61 years (Congdon et al., 2003a; Siess, 2005; Ernst and Lovich, 2009).
Activity patterns
C. picta is diurnal and active mostly during warmer parts of the year, although individuals can be active all year in southern populations (Ernst and Lovich, 2009). C. picta can move long distances to adjacent water bodies, sometimes over land (MacCulloch and Secoy, 1983a), but its home range has not been adequately studied (Ernst and Lovich, 2009). Homing ability has been documented, some of which required crossing over land (Cagle, 1944b; Williams, 1952; Gould, 1959; Emlen, 1969; Ernst, 1970e; Whillans and Crossman, 1977; DeRosa and Taylor, 1978; Quinn and Graves, 1998).
Population size and structure
C. picta can exhibit dense population sizes of up to 838 individuals per hectare (Gibbons, 1968b; Frazer et al., 1991b). Age classes are typically skewed toward adults, especially in rivers (Ernst and Lovich, 2009).
Nutrition
C. picta is an omnivorous generalist and feeds upon a large variety of algae, plants and animals (Ernst and Lovich, 2009).
Climate
Top of pageClimate | Status | Description | Remark |
---|---|---|---|
Cf - Warm temperate climate, wet all year | Tolerated | Warm average temp. > 10°C, Cold average temp. > 0°C, wet all year | |
Cs - Warm temperate climate with dry summer | Preferred | Warm average temp. > 10°C, Cold average temp. > 0°C, dry summers | |
Ds - Continental climate with dry summer | Preferred | Continental climate with dry summer (Warm average temp. > 10°C, coldest month < 0°C, dry summers) |
Latitude/Altitude Ranges
Top of pageLatitude North (°N) | Latitude South (°S) | Altitude Lower (m) | Altitude Upper (m) |
---|---|---|---|
51.350631 | 31.434958 |
Air Temperature
Top of pageParameter | Lower limit | Upper limit |
---|---|---|
Absolute minimum temperature (ºC) | -8 | |
Mean maximum temperature of hottest month (ºC) | 34 |
Water Tolerances
Top of pageParameter | Minimum Value | Maximum Value | Typical Value | Status | Life Stage | Notes |
---|---|---|---|---|---|---|
Water temperature (ºC temperature) | 1 | Optimum | It can be observed swimming under ice |
Means of Movement and Dispersal
Top of pageNatural dispersal
C. picta disperses from its hibernating ponds to outlying bodies water during spring, and slowly migrates back to hibernacula during autumn (Ernst and Lovich, 2009).
Accidental introduction
The pet trade is the likely invasion pathway for C. picta around the word, and it is possible that animals have escaped enclosures and therefore were accidentally introduced. However, information is needed to illustrate individual accidental releases.
Intentional introduction
C. picta has been intentionally introduced in Malta, the UK and California (Kraus, 2009). This species has been introduced via the pet trade (unknown if accidental or intentional) in Spain, the UK, Arizona, California, Colorado, Florida and Illinois (Kraus, 2009).
Pathway Causes
Top of pageCause | Notes | Long Distance | Local | References |
---|---|---|---|---|
Intentional release | Intentionally released in Malta, United Kingdom, and California | Yes | Kraus (2009) | |
Pet trade | Released via the pet trade in Spain, United Kingdom, Arizona, California, Colorado, Florida, and Ill | Yes | Kraus (2009) |
Risk and Impact Factors
Top of page- Proved invasive outside its native range
- Has a broad native range
- Abundant in its native range
- Highly adaptable to different environments
- Tolerant of shade
- Capable of securing and ingesting a wide range of food
- Highly mobile locally
- Benefits from human association (i.e. it is a human commensal)
- Long lived
- Fast growing
- Gregarious
- Has propagules that can remain viable for more than one year
- Negatively impacts animal health
- Reduced native biodiversity
- Hybridization
- Predation
- Highly likely to be transported internationally accidentally
- Highly likely to be transported internationally deliberately
- Highly likely to be transported internationally illegally
Uses List
Top of pageGeneral
- Botanical garden/zoo
- Laboratory use
- Pet/aquarium trade
- Research model
Materials
- Bones
Detection and Inspection
Top of pageC. picta is easily detected (see Description). As many as 50 individuals can be observed on a single log at one time (Ernst and Lovich, 2009).
Similarities to Other Species/Conditions
Top of pageC. picta is sometimes confused with other native North American turtles such as Graptemys, Pseudemys and Trachemys, but all of these have a vertebral keel, serrated posterior carapace rim and usually much larger females (Ernst and Lovich, 2009). Additionally, Deirochelys has a much longer neck, wide stripe on the forelimb, and vertically striped behind (Ernst and Lovich, 2009).
Prevention and Control
Top of pageDue to the variable regulations around (de)registration of pesticides, your national list of registered pesticides or relevant authority should be consulted to determine which products are legally allowed for use in your country when considering chemical control. Pesticides should always be used in a lawful manner, consistent with the product's label.
SPS measures
Chrysemys picta is not listed in CITES, and is listed as Least Concern in the IUCN Red List of Threatened Species.
Gaps in Knowledge/Research Needs
Top of pageAlthough many aspects of about the natural history of C. picta have been reported, data are needed regarding impacts on biodiversity in their introduced range.
References
Top of pageArnold EN, Ovenden DW, 2002. Reptiles and amphibians of Europe. Princeton, New Jersey, USA: Princeton University Press, 288 pp.
Banta BH, Morafka D, 1966. An annotated checklist of the recent amphibians and reptiles inhabiting the City and County of San Francisco, California. Wasmann Journal of Biology, 24:223-238.
Barbadillo LJ, Lacomba JI, Perez-Mellado V, Sancho V, Lopez-Jurado LF, 1999. Amphibians and reptiles of the Iberian Peninsula, Balearic and Canary Islands (Anfibios y reptiles de la Peninsula Iberica, Baleares y Canarias). Barcelona, Spain: Editorial Planeta.
Bartlett RD, 1967. Introduced chelonians in Dade County, Florida. International Turtle and Tortoise Society Journal, 1:19,35.
Beebee TJC, Griffiths R, 2000. Amphibians and reptiles: a natural history of the British herpetofauna. London, UK: HarperCollins, 270 pp.
Bury RB, Luckenbach RA, 1976. Introduced amphibians and reptiles in California. Biological Conservation, 10:1-14.
Cagle FR, 1944. Home range, homing behavior and migration in turtles. Miscellaneous Publications of the Museum of Zoology University of Michigan, 61:1-34.
Cagle FR, 1954. Observations on the life cycles of painted turtles (genus Chrysemys). American Midland Naturalist, 52:225-235.
Congdon JD, Nagle RD, Kinney OM, Loben Sels RCvan, Quinter T, Tinkle DW, 2003. Testing hypotheses of aging in long-lived painted turtles (Chrysemys picta). Experimental Gerontology, 38:765-772.
Dancik T, 1974. A survey of the turtles of the Des Plaines River. Bulletin of the Chicago Herpetological Society, 9:23-33.
Degenhardt WG, Painter CW, Price AH, 1996. Amphibians and reptiles of New Mexico. Albuquerque, USA: University of New Mexico Press, 431 pp.
DeRosa CT, Taylor DH, 1978. Sun-compass orientation in the painted turtle, Chrysemys picta (Reptilia, Testudines, Testudinidae). Journal of Herpetology, 12:25-28.
DeSmet WHO, 1978. The chromosomes of 11 species of Chelonia (Reptilia). Acta Zoologica Pathology (Antwerp), 70:15-34.
Despott G, 1913. I nostri rettili. Archivium Melitense, 2:93-96.
Diamond JM, 1989. Resurrection of frozen animals. Nature, 339:509-510.
Dundee HA, Rossman DA, 1989. The amphibians and reptiles of Louisiana. Baton Rouge, Louisiana, USA: Louisiana State University Press, 300 pp.
Emlen ST, 1969. Homing ability and orientation in the painted turtle Chrysemys picta marginata. Behaviour (Leiden), 33:58-76.
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Ernst CH, Ernst EM, 1973. Biology of Chrysemys picta bellii in southwestern Minnesota. Journal of Minnesota Academy of Science, 38:77-80.
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Fritz M, Lehmann HD, 2002. Fund of the North slip Lingen Sichen Zierschildkrote, Chrysemys picta bellii, on a body of water in Baden-Wurttemberg. (Fund von Schlupflingen der nordamerikansichen Zierschildkrote, Chrysemys picta bellii, an einem Gewasser in Baden-Wurttemberg.) Elaphe, 10:45-48.
Gould E, 1959. Studies on the orientation of turtles. Copeia, 1959:174-176.
Holland DC, 1994. The Western pond turtle: habitat and history. Portland, Oregon, USA: United States Department of Energy, Bonneville Power Administration.
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Iverson JB, Etchberger CR, 1989. The distributions of the turtles of Florida. Florida Scientist, 52:119-144.
Jennings MR, 1987. Special Publication no. 3 of the Southwestern Herpetologists Society.
Jennings MR, 1987. Status of the western painted turtle (Chrysemys picta bellii) in Arizona. Journal of the Arizona-Nevada Academy of Science, 22:129-133.
Jennings MR, 2004. An annotated check list of the amphibians and reptiles of California and adjacent waters. Third Revised Edition. California Fish and Game, 90:161-213.
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Lovich JE, LaRue CT, Drost CA, Arundel TR, 2014. Traditional cultural use as a tool for inferring biogeography and provenance: a case study involving painted turtles (Chrysemys picta) and Hopi Native American Culture in Arizona, USA, Copeia, 2014(2):215-220
MacCulloch RD, Secoy DM, 1983. Movement in a river population of Chrysemys picta bellii in southern Saskatchwean. Journal of Herpetology, 17:283-285.
Mateo JA, 1997. Introduced species in the Iberian Peninsula, the Balearic Islands, Madeira and Azores. (Las especies introducidas en la Península Ibérica, Baleares, Canarias, Madeira y Azores.) Distribucion y biogeografia de los anfibios y reptiles en Espana y Portugal, vol. 3 (Distribution and biogeography of amphibians and reptiles in Spain and Portugal, vol. 3. Monographs of Herpetology).
Mitchell JC, 1994. The reptiles of Virginia. Washington, DC, USA: Smithsonian Institution Press.
Palmer WM, Braswell AL, 1995. Reptiles of North Carolina. Chapel Hill, North Carolina, USA: University of North Carolina Press, 412 pp.
Pearse DE, Janzen FJ, Avise JC, 2001. Genetic markers substantiate long-term storage and utilization of sperm by female painted turtle. Hereity, 86:378-384.
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Podloucky R, 1998. Status of Emys orbicularis in Northwest Germany. Mertensiella, 10:209-217.
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Sexton OJ, 1959. Spatial and temporal movements of a populations of the painted turtle, Chrysemys picta marginata (Agassiz). Ecological Monographs, 29:113-140.
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Stock AD, 1972. Karyological relationships in turtles (Reptilia: Chelonia). Canadian Journal of Genetics and Cytology, 14:859-868.
Stuart JN, 2000. Additional notes on native and non-native turtles of the Rio Grande Drainage Basin, New Mexico. Bulletin of the Chicago Herpetological Society, 35:229-235.
Stuart JN, 2001. Geographic distribution: Chrysemys picta bellii. Herpetological Review, 32:116-117.
Swanton EW, 1928. The mammals, fishes, reptiles and amphibians of Haslemere and district. Haslemere Natural History Society Science Paper, 10:4-27.
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Distribution References
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Pleguezuelos JM, 2004. Introduced amphibian and reptile species. (Las especies introducidas de anfibios y reptiles). In: Atlas y libro rojo de los anfibios y reptiles de España, 3rd edition (Atlas and red book of amphibians and reptiles of Spain), [ed. by Pleguezuelos JM, Márquez R, Lizana M]. Madrid, Spain: Dirección General de Conservación de la Naturaleza-Asociación Herpetologica Española. 502-532.
Podloucky R, 1998. Status of Emys orbicularis in Northwest Germany. In: Mertensiella, 10 209-217.
Rodeck HG, 1948. The turtles of Colorado. In: Journal of the Colorado-Wyoming Academy of Science, 3 54.
Stebbins RC, 1985. A field guide to western reptiles and amphibians., Boston, Massachusetts, USA: Houghton Mifflin. 336 pp.
Stuart JN, 2000. Additional notes on native and non-native turtles of the Rio Grande Drainage Basin, New Mexico., 35 229-235.
Swanton EW, 1928. The mammals, fishes, reptiles and amphibians of Haslemere and district. In: Haslemere Natural History Society Science Paper, 10 4-27.
Taylor RHR, 1948. The distribution of reptiles and amphibia in the British Isles, with notes on species recently introduced. In: British Journal of Herpetology, 1 1-25.
Taylor RHR, 1963. The distribution of amphibians and reptiles in England and Wales, Scotland and Ireland and the Channel Isles: a revised survey. In: British Journal of Herpetology, 3 95-101.
Uetz P, Hosek J, 2015. The Reptile Database., http://reptile-database.reptarium.cz/
Van Dijk PP, 2016. Chrysemys picta. (errata version published in 2016). The IUCN Red List of Threatened Species., e.T163467A97410447. http://www.iucnredlist.org
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