Graptemys oculifera (Baur 1890) – Ringed Map Turtle, Ringed Sawback

Jones, Robin L.; Selman, Will

doi:10.3854/crm.5.033.oculifera.v1.2009

Cited by 7 publications

(7 citation statements)

References 5 publications

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“…Graptemys oculifera is considered a riverine species that prefers numerous sandbars and moderate to fast currents (Jones and Selman, 2009) which are not found within the reservoir. It is likely that there is no breeding population within the reservoir (Jones and Selman, 2009) and a roughly 42 km gap in suitable habitat between populations above and below the reservoir. Thus, future dispersal across this barrier-both the dam and reservoirseems improbable.…”

Section: Discussionmentioning

confidence: 99%

“…Graptemys oculifera (Ringed Sawback) is endemic to the Pearl River watershed of central and southern Mississippi as well as southeastern Louisiana (Jones and Selman, 2009). Although it is one of the most abundant turtles in this watershed (Lindeman, 1998;Shively, 1999), it is federally listed as threatened (USFWS, 1986), state endangered in Mississippi (Mississippi Department of Wildlife, Fisheries, and Parks, 2012), state threatened in Louisiana (www.wlf.…”

mentioning

confidence: 98%

“…louisiana.gov/wildlife/rare-animal-fact-sheets; accessed 9 September 2014), and Vulnerable on the IUCN Red List (www.iucnredlist.org; accessed on 12 July 2014). These listings are primarily attributable to its limited inhabited area (,87.5 km 2 ; Jones and Selman, 2009) and population declines observed in the 1980s (Stewart, 1988). One of the primary threats to the species is that the Pearl River has been altered by channelization and damming, and there are other flood control and/or navigational projects proposed for the river (Stewart, 1988).…”

mentioning

confidence: 99%

“…Along with these threats, the Ross Barnett Reservoir, situated immediately north of Jackson ( Fig. 1), is presumed to be a barrier to turtle movements (Jones and Selman, 2009). McCoy and Vogt (1980) designated two areas needed for preservation of the species, a 64 km stretch of the Pearl River above and below Carthage (Leake County, MS; upstream of the reservoir) and a 158 km stretch of the Pearl River from Georgetown (Copiah County, MS) to Bogalusa (Washington Parish, LA; downstream of the reservoir).…”

mentioning

confidence: 99%

“…All species are highly aquatic, primarily inhabiting rivers, streams, and their associated habitats (i.e., oxbow ponds, bayous). Turtles within the genus are particularly susceptible to anthropogenic impacts including channelization, impoundments, desnagging (Lindeman, 1999;Jones and Selman, 2009), and also collection for the pet trade (U.S. Fish and Wildlife Service [USFWS], 2002).…”

mentioning

confidence: 99%

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High Connectivity Observed in Populations of Ringed Sawbacks,Graptemys oculifera, in the Pearl and Bogue Chitto Rivers Using Six Microsatellite Loci

Gaillard

Selman

Jones

et al. 2015

Copeia

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 98%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 3 more Smart Citations

High Connectivity Observed in Populations of Ringed Sawbacks,Graptemys oculifera, in the Pearl and Bogue Chitto Rivers Using Six Microsatellite Loci

Gaillard

Selman

Jones

et al. 2015

Copeia

Self Cite

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Impact of human disturbance on the thermoregulatory behaviour of the endangered ringed sawback turtle (Graptemys oculifera)

Heppard

Buchholz

2019

Aquatic Conservation

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1. Human recreational disturbance of riverine environments may be contributing to population declines of aquatic organisms worldwide. Aquatic turtles that are heavily dependent on basking in sunlight to maintain an optimal body temperature may abandon basking perches because they perceive humans as potential predators.2. The impact of boat traffic, the availability of basking structures, and various environmental factors on the basking behaviour of the ringed sawback turtle (Graptemys oculifera) was assessed at two sites on the Pearl River, Mississippi, USA. This information was used to model the likely effects of human disturbance on the body temperature of large female turtles.3. Both the duration of basking and the percentage of turtles in a basking group that abandoned their basking perch were influenced by the availability of alternative basking sites, frequency of boat traffic, boat speed enforcement zones ('wake' or 'no wake'), boat type, air temperature, weather conditions, and Julian day. A simulation model of anthropogenically disturbed and undisturbed adult female ringed sawbacks showed that disturbance probably decreases the mean daily body temperature, especially at higher disturbance probabilities and in May, when the air temperature is low. 4. Management recommendations are provided that minimize the adverse effects of unintentional human disturbance of the ringed sawback to enable more effective conservation of this endangered, endemic species. Such methods are likely to be useful elsewhere as recreational disturbance becomes a greater conservation issue worldwide.

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Intersexual allometry differences and ontogenetic shifts of coloration patterns in two aquatic turtles, Graptemys oculifera and Graptemys flavimaculata

Ennen

Lindeman

Lovich

2015

Ecology and Evolution

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Coloration can play critical roles in a species' biology. The allometry of color patterns may be useful for elucidating the evolutionary mechanisms responsible for shaping the traits. We measured characteristics relating to eight aspects of color patterns from Graptemys oculifera and G. flavimaculata to investigate the allometric differences among male, female, and unsexed juvenile specimens. Additionally, we investigated ontogenetic shifts by incorporating the unsexed juveniles into the male and female datasets. In general, male color traits were isometric (i.e., color scaled with body size), while females and juvenile color traits were hypoallometric, growing in size more slowly than the increase in body size. When we included unsexed juveniles in our male and female datasets, our linear regression analyses found all relationships to be hypoallometric and our model selection analysis found support for nonlinear models describing the relationship between body size and color patterns, suggestive of an ontogenetic shift in coloration traits for both sexes at maturity. Although color is critical for many species' biology and therefore under strong selective pressure in many other species, our results are likely explained by an epiphenomenon related to the different selection pressures on body size and growth rates between juveniles and adults and less attributable to the evolution of color patterns themselves.

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Graptemys oculifera (Baur 1890) – Ringed Map Turtle, Ringed Sawback

Cited by 7 publications

References 5 publications

High Connectivity Observed in Populations of Ringed Sawbacks,Graptemys oculifera, in the Pearl and Bogue Chitto Rivers Using Six Microsatellite Loci

High Connectivity Observed in Populations of Ringed Sawbacks,Graptemys oculifera, in the Pearl and Bogue Chitto Rivers Using Six Microsatellite Loci

Impact of human disturbance on the thermoregulatory behaviour of the endangered ringed sawback turtle (Graptemys oculifera)

Intersexual allometry differences and ontogenetic shifts of coloration patterns in two aquatic turtles, Graptemys oculifera and Graptemys flavimaculata

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