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Graptemys pearlensis ENNEN, LOVICH, KREISER, SELMAN & QUALLS, 2010

IUCN Red List - Graptemys pearlensis - Endangered, EN

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Higher TaxaEmydidae, Deirochelyinae, Testudinoidea, Testudines (turtles) 
Common Names 
SynonymGraptemys pearlensis ENNEN, LOVICH, KREISER, SELMAN & QUALLS 2010
Graptemys pearlensis — RHODIN et al. 2010 
DistributionUSA (Mississippi, E Louisiana)

Type locality: Mississippi, Copiah County, Pearl River at State Highway 28, near Georgetown  
TypesHolotype: CM 62162 (=). Collected by T.E. Magers, 23 September 1967. D.E. Hahn collection, field number DEH 3400 
DiagnosisDiagnosis. — A high-domed Graptemys with large females and small males, like G. gibbonsi, but typically with a single, generally narrower (relative to G. gibbonsi), vertical, yellow bar on the upper surface of each marginal scute (Fig. 6). A continuous black to brown vertebral stripe is usually present on the carapace. The yellow pigment bar on the 12th marginal scutes is usually 50% or less of those scute lengths along the same axis as the pigment bar (Fig. 7). When longer, the pigment bar tends to be located more distal from the seam between the 12th marginal scutes than it is in G. gibbonsi (Fig. 8). The head pattern is similar to that of G. gibbonsi and usually consists of a prominent, three-pronged, yellow nasal trident on the snout, and the postorbital blotches are connected to the interorbital blotch.
CommentSynonymy: Praschag et al. 2017 found that G. ernsti, G. gibbonsi, G. pearlensis and G. pulchra are nearly identical genetically and, thus, likely conspecific. Originally, G. pearlensis was recognized as part of G. pulchra by Baur (1893) and subsequent authors until Lovich and McCoy (1992) described G. gibbonsi, which also included what is now recognized as G. pearlensis. Later, Ennen et al. (2010) split G. gibbonsi (sensu lato), restricting G. pearlensis to the Pearl River and G. gibbonsi (sensu stricto) to the Pascagoula River.

Habitat: freshwater (lakes, rivers) 
Etymologynamed after the type locality. 
  • Bour, R. 2008. Global diversity of turtles (Chelonii; Reptilia) in freshwater. Hydrobiologia 595:593–598
  • Crother, B. I. (ed.) 2012. Standard Common and Current Scientific Names for North American Amphibians, Turtles, Reptiles, and Crocodilians, Seventh Edition. Herpetological Circular 39: 1-92
  • Ennen, J.R., LoViCH, J.e., and Jones, R.L. 2016. Graptemys pearlensis Ennen, Lovich, Kreiser, Selman, and Qualls 2010 – Pearl River Map Turtle. In: Rhodin, A.G.J., Pritchard, P.C.H., van Dijk, P.P., Saumure, R.A., Buhlmann, K.A., Iverson, J.B., and Mittermeier, R.A. (Eds.). Conservation Biology of Chelonian Research Monographs 5(9):094.1–8, doi:10.3854/crm.5.094.pearlensis.v1.2016
  • Ennen, Joshua R., Jeffrey E. Lovich and Roger Birkhead. 2012. Graptemys pearlensis. Catalogue of American Amphibians and Reptiles (889): 1-4 - get paper here
  • Ennen, Joshua R.; Jeffrey E. Lovich, Brian R. Kreiser, W. Selman, Carl P. Qualls 2010. Genetic and Morphological Variation Between Populations of the Pascagoula Map Turtle (Graptemys gibbonsi) in the Pearl and Pascagoula Rivers with Description of a New Species. Chelonian Conservation and Biology. 9 (1): 98–113 - get paper here
  • Lindeman, Peter V. 2014. Geographic Distribution: Graptemys pearlensis (Pearl River map turtle). Herpetological Review 45 (2): 280
  • Lindeman, Peter V. 2017. Geographic Distribution: Graptemys pearlensis (Pearl Map Turtle) Herpetological Review 48 (1): 123 - get paper here
  • Praschag P, Ihlow F, Flecks M, Vamberger M, Fritz U. 2017. Diversity of North American map and sawback turtles (Testudines: Emydidae: Graptemys). Zool Scripta, DOI: 10.1111/zsc.12249 - get paper here
  • Rogner, M. 2016. Höckerschildkröten – Die Gattung Graptemys Reptilia 21 (118): 44-50 - get paper here
  • Seidel, Michael E. & Carl H. Ernst 2017. A Systematic Review of the Turtle Family Emydidae Vertebrate Zoology 67 (1): 1–122 - get paper here
  • Selman, Will 2016. Geographic Distribution: Graptemys pearlensis (Pearl Map Turtle) Herpetological Review 47 (4): 625
  • Selman, Will and Robert L. Jones 2017. Population Structure, Status, and Conservation of Two Graptemys Species from the Pearl River, Mississippi Journal of Herpetology 51 (1): 27–36 - get paper here
  • TTWG; Rhodin, A.G.J.; van Dijk, P.P.; Iverson, J.B. & Shaffer, H.B. [turtle taxonomy working group] 2010. Turtles of the World, 2010 Update: Annotated Checklist of Taxonomy, Synonymy, Distribution, and Conservation Status. Chelonian Research Monographs (ISSN 1088-7105) No. 5, doi:10.3854/crm.5.000.checklist.v3.2010 - get paper here
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