The Status of the Turtles Graptemys pulchra Baur and Graptemys barbouri Carr and Marchand, with Notes on Their Natural History

Cagle, Fred R.

doi:10.2307/1439268

Cited by 25 publications

(51 citation statements)

References 2 publications

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“…Skull proportions of G. kerneri accord with this trend by exhibiting the most blunt-faced and being the most easterly occurring species in the group. Interestingly, however, G. kerneri exhibits signs of the same ontogenetic distortion observed in the other species (such as the flaring of the maxilla, jugal, and quadratojugal and the upward inflection of the parietal at the frontoparietal suture) but at a smaller overall skull size than observed in G. barbouri (Cagle 1952;Figs. 2-4).…”

Section: Discussionmentioning

confidence: 72%

“…This trend begins with G. gibbonsi, which exhibits a rather elongate skull, in particular the nasal regions. Skulls become progressively wider and shorter to the east, with G. barbouri being the most blunt-faced of the extant species (Cagle, 1952;Figs. 2-4).…”

Section: Discussionmentioning

confidence: 99%

“…It represents an adult female, which we speculate exhibits megacephaly similar to that in other species in the megacephalic clade of map turtles that have evolved to facilitate a largely molluscivorous diet. It exhibits ontogenetic distortion (including outward flaring of the maxillae and parietals) characteristic of older individuals of Graptemys barbouri examined in the FLMNH collection (Cagle, 1952). Although clearly representing an older individual based on its size, it is smaller than the largest G. barbouri skulls measured at the FLMNH.…”

Section: Skullmentioning

confidence: 94%

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An extinct map turtleGraptemys(Testudines, Emydidae) from the late Pleistocene of Florida

Ehret

Bourque

2011

Journal of Vertebrate Paleontology

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Section: Discussionmentioning

confidence: 72%

Section: Discussionmentioning

confidence: 99%

Section: Skullmentioning

confidence: 94%

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An extinct map turtleGraptemys(Testudines, Emydidae) from the late Pleistocene of Florida

Ehret

Bourque

2011

Journal of Vertebrate Paleontology

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“…Dundee and Rossman (1989) published a record of this species (as G. pulchra) from the Tickfaw River at U.S. Highway 190, Livingston Parish, Louisiana. Lovich and McCoy (1992) questioned that record, as the species is unknown in the Tangipahoa, Tchefuncte, and Amite rivers, which are located between the Tickfaw River and Bogue Chitto River (Cagle 1952;Cliburn 1971), the latter a known locality for the species. The southernmost distribution within the Pearl River is near the former town of Napolean, Mississippi, within the East Pearl River (W. Selman, pers.…”

Section: Conservation Biology Of Freshwater Turtles and Tortoisesmentioning

confidence: 99%

“…Chaney and Smith (1950) caught 64 G. gibbonsi and G. oculifera (combined), in addition to 9 Trachemys scripta, 4 Pseudemys concinna, and 4 Sternotherus carinatus in 26 hrs of collecting along 9 km of the Pearl River. Cagle (1952) collected 98 G. gibbonsi (as G. pulchra) in the Pearl River, including 75 juveniles, 12 adult males, and 11 females (five of the latter were adults). Cagle (1953) .…”

Section: Conservation Biology Of Freshwater Turtles and Tortoisesmentioning

confidence: 99%

Graptemys gibbonsi Lovich and McCoy 1992 – Pascagoula Map Turtle, Pearl River Map Turtle, Gibbons’ Map Turtle

Lovich¹,

Selman²,

McCoy³

2009

Conservation Biology of Freshwater Turtles and Tortoises

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Summary. -The Pascagoula map turtle, Graptemys gibbonsi (Family Emydidae), is a large aquatic species endemic to the Pascagoula and Pearl River drainages of Mississippi and southeastern Louisiana. It was previously considered part of the composite species G. pulchra. Sexual dimorphism is pronounced, with adult females (carapace length to 295 mm) attaining more than twice the size of adult males (to 141 mm). Although the species is locally abundant, populations are threatened by habitat destruction, commercial collecting, and target practice by unethical people who shoot basking turtles. The current IUCN Red List status is Lower Risk/Near Threatened, but the status should be re-examined due to recent surveys indicating population declines or the disappearance of the species from previously documented localities. In addition, genetic and pattern differences between populations in the Pearl and Pascagoula rivers suggest that the two entities should be managed separately to protect significant biodiversity.

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Conservation Status of Freshwater Gastropods of Canada and the United States

et al. 2013

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This is the first American Fisheries Society conservation assessment of freshwater gastropods (snails) from Canada and the United States by the Gastropod Subcommittee (Endangered Species Committee). This review covers 703 species representing 16 families and 93 genera, of which 67 species are considered extinct, or possibly extinct, 278 are endangered, 102 are threatened, 73 are vulnerable, 157 are currently stable, and 26 species have uncertain taxonomic status. Of the entire fauna, 74% of gastropods are imperiled (vulnerable, threatened, endangered) or extinct, which exceeds imperilment levels in fishes (39%) and crayfishes (48%) but is similar to that of mussels (72%). Comparison of modern to background extinction rates reveals that gastropods have the highest modern extinction rate yet observed, 9,539 times greater than background rates. Gastropods are highly susceptible to habitat loss and degradation, particularly narrow endemics restricted to a single spring or short stream reaches. Compilation of this review was hampered by a paucity of current distributional information and taxonomic uncertainties. Although research on several fronts including basic biology, physiology, conservation strategies, life history, and ecology are needed, systematics and curation of museum collections and databases coupled with comprehensive status surveys (geographic limits, threat identification) are priorities.

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The Status of the Turtles Graptemys pulchra Baur and Graptemys barbouri Carr and Marchand, with Notes on Their Natural History

Cited by 25 publications

References 2 publications

An extinct map turtleGraptemys(Testudines, Emydidae) from the late Pleistocene of Florida

An extinct map turtleGraptemys(Testudines, Emydidae) from the late Pleistocene of Florida

Graptemys gibbonsi Lovich and McCoy 1992 – Pascagoula Map Turtle, Pearl River Map Turtle, Gibbons’ Map Turtle

Conservation Status of Freshwater Gastropods of Canada and the United States

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