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Journal articles on the topic 'Pseudemys nelsoni'

Author: Grafiati

Published: 3 June 2025

Last updated: 19 July 2025

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1

Du, Preez Louis, and Rooyen Michelle Van. "A new polystomatid (Monogenea, Polystomatidae) from the mouth of the North American freshwater turtle Pseudemys nelsoni." ZooKeys 539 (November 23, 2015): 1–9. https://doi.org/10.3897/zookeys.539.6108.

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Based on material collected from Pseudemys nelsoni (Reptilia: Chelonia: Emydidae) during a parasite survey of the herpetofauna around Gainesville, Florida, USA, Polystomoides nelsoni sp. n. is described as a new polystome species. This parasite was found in the oral and pharyngeal region of the host. In a sample of nine Pseudemys nelsoni, three specimens were found to release polystome eggs. One turtle was euthanized and dissected and found to be infected in the oral region with 19 specimens belonging to an as-yet-unknown Polystomoides. This is only the fifth Polystomoides recorded from the Nearctic realm. This species is distinguished from known species by a combination of characteristics including marginal hooklet morphology, body length and haptor dimensions.

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2

Kramer, Matthew, and Uwe Fritz. "Courtship of the Turtle, Pseudemys nelsoni." Journal of Herpetology 23, no. 1 (1989): 84. http://dx.doi.org/10.2307/1564324.

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3

Siders, Zachary A., Theresa A. Stratmann, Calandra N. Turner Tomaszewicz, Andrew S. Walde, and Eric C. Munscher. "Somatic Growth and Maturity for Four Species of River Cooter Including Pseudemys concinna suwanniensis, P. nelsoni, P. peninsularis, and P. texana." Biology 12, no. 7 (2023): 965. http://dx.doi.org/10.3390/biology12070965.

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Pseudemys is a genus of commonly occurring freshwater turtles with limited growth information across their long lifespans. We used 11,361 mark-recapture events to estimate the somatic growth rates of P. nelsoni, P. peninsularis, P. concinna suwanniensis, and P. texana from freshwater springs and developed a Bayesian growth model to estimate the species-specific, site-specific, and individual effects on growth. We corroborated evidence for fast juvenile growth and slower adult growth in Pseudemys but found uncommonly fast growth rates, with turtles doubling or tripling in size in the first year. P. texana males had the smallest average maximum size (L∞, 243 mm), while P. c. suwanniensis females had the largest (423 mm). Environmental conditions at springs had significant effects on k, the growth coefficient, but not L∞. We derived, using a ratio of length at maturity to L∞ (71.7% and 87%, males and females), that females matured 1.15–1.57 times older than males except for P. c. suwanniensis, which matured three times older. Given the local abundance declines in many Pseudemys from anthropogenic impacts, this study provides important baseline life history information for Pseudemys species for use in ongoing conservation efforts and presents a novel hierarchical modeling approach using a long-term mark-recapture dataset.

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4

Kalaentzis, Konstantinos, Christos Kazilas, Ilias Strachinis, Elias Tzoras, and Petros Lymberakis. "Alien Freshwater Turtles in Greece: Citizen Science Reveals the Hydra-Headed Issue of the Pet Turtle Trade." Diversity 15, no. 5 (2023): 691. http://dx.doi.org/10.3390/d15050691.

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Citizen science is emerging as a powerful tool for the early detection of biological invasions. The exotic pet trade has been deemed as the most significant cause of establishment for reptiles, and among them, turtles have the highest number of introduction events. In Europe, at least 13 species of alien freshwater turtles have been recorded in the wild. In Greece, only two species of alien turtles have been reported, namely the American pond slider Trachemys scripta and the Florida cooter Pseudemys floridana. In this study, we provide an updated checklist of the alien freshwater turtles recorded in Greece, using citizen science, personal observations, and literature. Our results provide the first records for the country of five species, namely the Florida red-bellied cooter Pseudemys nelsoni, the Eastern river cooter Pseudemys concinna, the Chinese stripe-necked turtle Mauremys sinensis, the Chinese soft-shelled turtle Pelodiscus sinensis, and the Common snapping turtle Chelydra serpentina and new localities for T. scripta. Similar to the myth of the Lernaean Hydra (i.e., for every head chopped off, more would regrow), the pet turtle trade has been proven to have multiple heads.

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5

Bjorndal, Karen A. "Effect of Solitary vs Group Feeding on Intake in Pseudemys nelsoni." Copeia 1986, no. 1 (1986): 234. http://dx.doi.org/10.2307/1444917.

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6

Davis, Karen M., and Gordon M. Burghardt. "Turtles (Pseudemys nelsoni) learn about visual cues indicating food from experienced turtles." Journal of Comparative Psychology 125, no. 4 (2011): 404–10. http://dx.doi.org/10.1037/a0024784.

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7

Chaabane, Amira, Louis Du Preez, Gerald R. Johnston, and Olivier Verneau. "Revision of the systematics of the Polystomoidinae (Platyhelminthes, Monogenea, Polystomatidae) with redefinition of Polystomoides Ward, 1917 and Uteropolystomoides Tinsley, 2017." Parasite 29 (2022): 56. http://dx.doi.org/10.1051/parasite/2022056.

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Polystomatids are platyhelminth parasites that infect mainly amphibians and freshwater turtles. For more than seven decades, chelonian polystomes were classified into three genera according to the number of hamuli, i.e. absent for Neopolystoma, one pair for Polystomoidella and two pairs for Polystomoides. Following re-examination of morphological characters, seven new genera were erected the past six years, namely Apaloneotrema, Aussietrema, Fornixtrema, Manotrema, Pleurodirotrema, Uropolystomoides and Uteropolystomoides. However, the polyphyly of Neopolystoma and Polystomoides on the one hand, and the nested position of Uteropolystomoides within a clade encompassing all Neopolystoma and Polystomoides spp. on the other, still raised questions about the validity of these genera. We therefore re-examined several types, paratypes and voucher specimens, and investigated the molecular phylogeny of polystomes sampled from the oral cavity of North American turtles to re-evaluate their systematic status. We show that all Polystomoides Ward, 1917, sensu Du Preez et al., 2022, Neopolystoma Price, 1939, sensu Du Preez et al., 2022 and Uteropolystomoides Tinsley, 2017 species, display vaginae that are peripheral and extend well beyond the intestine. We thus reassign all species of the clade to Polystomoides and propose nine new combinations; however, although Uteropolystomoides is nested within this clade, based on its unique morphological features, we propose to keep it as a valid taxon. Polystomoides as redefined herein groups all polystome species infecting either the oral cavity or the urinary bladder of cryptodires, with peripheral vaginae and with or without two pairs of small hamuli. Uteropolystomoides nelsoni (Du Preez & Van Rooyen 2015), originally described from Pseudemys nelsoni Carr is now regarded as Uteropolystomoides multifalx (Stunkard, 1924) n. comb. infecting three distinct Pseudemys species of North America.

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8

Yoon, Heenam, Yongki Kim, and Manseok Shin. "Distribution characteristics of invasive alien amphibians and reptiles in Korean." GEO DATA 4, no. 4 (2022): 20–27. http://dx.doi.org/10.22761/dj2022.4.4.003.

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This study analyzed the distribution and habitat status of 1 species of amphibian and 4 species in 1 genus of reptiles among “ecosystem-disturbing species” designated by the Ministry of Environment through the National Habitat Survey of Alien Species (2015-2021). As a result, Rana catesbeiana with 415 sites, Trachemys spp. with 513 sites, Pseudemys concinna with 174 sites, Pseudemys nelsoni with 66 sites, and Mauremys sinensis with 31 sites. Of the total habitat area of R. catesbeiana, the agricultural land area accounted for 46% and the used(urbanized/dry) area accounted for 15%. Of the total habitat area of T. spp, the ratio of agricultural land areas was 35%, and the ratio of used areas was 24%. These species were found to live mainly in reservoir areas with higher natural characteristics than in urbanized and dry areas. However, M. sinensis, which were introduced in early 2000 and have a small number of habitats, mainly inhabited agricultural land areas with high naturalness, with agricultural land areas accounting for 43% and used areas accounting for 29% of the total habitat area. Accordingly, a detailed study on the ecology and artificial release of the M. sinensis is needed.

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9

Dunson, William A., and Michael E. Seidel. "Salinity Tolerance of Estuarine and Insular Emydid Turtles (Pseudemys nelsoni and Trachemys decussata)." Journal of Herpetology 20, no. 2 (1986): 237. http://dx.doi.org/10.2307/1563949.

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10

Gál, János, Zoltán Demeter, Elena Palade, Miklós Rusvai, and Csaba Géczy. "Harderian gland adenocarcinoma in a Florida Red-bellied Turtle ( Pseudemys Nelsoni ) — Case report." Acta Veterinaria Hungarica 57, no. 2 (2009): 275–81. http://dx.doi.org/10.1556/avet.57.2009.2.8.

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The authors describe a case of unilateral adenocarcinoma emerging from the Harderian gland, filling the right orbital cavity of a Florida Red-bellied Turtle ( Pseudemys nelsoni ). The tumour did not produce any metastasis but presented an expansive growth and led to the dislocation and protrusion of the right eyeball. Histopathological analysis revealed the presence of numerous mitotic figures in the cellular population that made up the tumour. The tumour cells completely filled the alveoli of the gland and had a nest-like structure. The authors also emphasise the importance of the differential diagnosis of this rare pathological change in turtles. Epithelial hyperplasia of the Harderian gland’s duct, observed in animals suffering from vitamin A deficiency, can also lead to an enlargement of the eyelid, but in these cases the change usually involves both eyelids symmetrically. This is the first description of a Harderian gland adenocarcinoma in a Florida Red-bellied Turtle.

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11

Cruze, Lori, Heather J. Hamlin, Satomi Kohno, Michael W. McCoy, and Louis J. Guillette Jr. "Evidence of steroid hormone activity in the chorioallantoic membrane of a Turtle (Pseudemys nelsoni)." General and Comparative Endocrinology 186 (June 2013): 50–57. http://dx.doi.org/10.1016/j.ygcen.2013.02.007.

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12

Nebeker, Alan V., and R. Bruce Bury. "Temperature Selection by Hatchling and Yearling Florida Red-Bellied Turtles (Pseudemys nelsoni) in Thermal Gradients." Journal of Herpetology 34, no. 3 (2000): 465. http://dx.doi.org/10.2307/1565373.

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13

Kramer, Matthew. "Home Range of the Florida Red-Bellied Turtle (Pseudemys nelsoni) in a Florida Spring Run." Copeia 1995, no. 4 (1995): 883. http://dx.doi.org/10.2307/1447036.

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14

Du Preez, Louis, and Michelle Van Rooyen. "A new polystomatid (Monogenea, Polystomatidae) from the mouth of the North American freshwater turtle Pseudemys nelsoni." ZooKeys 539 (November 23, 2015): 1–9. http://dx.doi.org/10.3897/zookeys.539.6108.

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15

Davis, Karen M., and Gordon M. Burghardt. "Training and long-term memory of a novel food acquisition task in a turtle (Pseudemys nelsoni)." Behavioural Processes 75, no. 2 (2007): 225–30. http://dx.doi.org/10.1016/j.beproc.2007.02.021.

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16

Davis, Karen M., and Gordon M. Burghardt. "Long-term retention of visual tasks by two species of emydid turtles, Pseudemys nelsoni and Trachemys scripta." Journal of Comparative Psychology 126, no. 3 (2012): 213–23. http://dx.doi.org/10.1037/a0027827.

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17

Katsu, Yoshinao, Rie Ichikawa, Toshitaka Ikeuchi, Satomi Kohno, Louis J. Guillette, and Taisen Iguchi. "Molecular Cloning and Characterization of Estrogen, Androgen, and Progesterone Nuclear Receptors from a Freshwater Turtle (Pseudemys nelsoni)." Endocrinology 149, no. 1 (2008): 161–73. http://dx.doi.org/10.1210/en.2007-0938.

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18

Baguette Pereiro, Borja, Guillermo Spajic, and Daniela Belén Risaro. "PRIMER REGISTRO DE LAS TORTUGAS DE AGUA DULCE Graptemys ouachitensis (EMYDIDAE), Pseudemys nelsoni (EMYDIDAE) Y Apalone spinifera (TRIONYCHIDAE) EN ARGENTINA." Revista Latinoamericana de Herpetología 5, no. 4 (2022): 47–50. http://dx.doi.org/10.22201/fc.25942158e.2022.4.496.

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19

Waltzek, Thomas B., Brian A. Stacy, Robert J. Ossiboff, et al. "A novel group of negative-sense RNA viruses associated with epizootics in managed and free-ranging freshwater turtles in Florida, USA." PLOS Pathogens 18, no. 3 (2022): e1010258. http://dx.doi.org/10.1371/journal.ppat.1010258.

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Few aquatic animal negative-sense RNA viruses have been characterized, and their role in disease is poorly understood. Here, we describe a virus isolated from diseased freshwater turtles from a Florida farm in 2007 and from an ongoing epizootic among free-ranging populations of Florida softshell turtles (Apalone ferox), Florida red-bellied cooters (Pseudemys nelsoni), and peninsula cooters (Pseudemys peninsularis). Affected turtles presented with similar neurological signs, oral and genital ulceration, and secondary microbial infections. Microscopic lesions were most severe in the softshell turtles and included heterophilic/histiocytic meningoencephalitis, multi-organ vasculitis, and cytologic observation of leukocytic intracytoplasmic inclusions. The virus was isolated using Terrapene heart (TH-1) cells. Ultrastructurally, viral particles were round to pleomorphic and acquired an envelope with prominent surface projections by budding from the cell membrane. Viral genomes were sequenced from cDNA libraries of two nearly identical isolates and determined to be bi-segmented, with an ambisense coding arrangement. The larger segment encodes a predicted RNA-directed RNA polymerase (RdRP) and a putative zinc-binding matrix protein. The smaller segment encodes a putative nucleoprotein and an envelope glycoprotein precursor (GPC). Thus, the genome organization of this turtle virus resembles that of arenaviruses. Phylogenetic analysis shows that the RdRP of the turtle virus is highly diverged from the RdRPs of all known negative-sense RNA viruses and forms a deep branch within the phylum Negarnaviricota, that is not affiliated with any known group of viruses, even at the class level. In contrast, the GPC protein of the turtle virus is confidently affiliated with homologs from a distinct group of fish hantaviruses. Thus, the turtle virus is expected to become the founder of a new taxon of negative-sense RNA viruses, at least with a family rank, but likely, an order or even a class. These viruses probably evolved either by reassortment or by intrasegment recombination between a virus from a distinct branch of negarnaviruses distant from all known groups and a hanta-like aquatic virus. We suggest the provisional name Tosoviridae for the putative new family, with Turtle fraservirus 1 (TFV1) as the type species within the genus Fraservirus. A conventional RT-PCR assay, targeting the TFV1 RdRP, confirmed the presence of viral RNA in multiple tissues and exudates from diseased turtles. The systemic nature of the TFV1 infection was further supported by labeling of cells within lesions using in situ hybridization targeting the RNA of the TFV1 RdRP.

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20

Koo, Kyo Soung, Soorim Song, Jae Hyeok Choi, and Ha-Cheol Sung. "Current Distribution and Status of Non-Native Freshwater Turtles in the Wild, Republic of Korea." Sustainability 12, no. 10 (2020): 4042. http://dx.doi.org/10.3390/su12104042.

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Globally, an increase in the transportation and expansion of the pet market is the most important cause of the invasion of non-native species. Invasion of non-native species disturbs native ecosystems and leads to socio-economic problems. The pet trade involving turtles has been globally recognized as the route through which non-native species enter ecosystems. As a result, the invasion of non-native turtles worldwide is causing problems such as competition, predation, transmission of parasites, and hybridization with native turtles. Every year, both the number of non-native turtles imported as pets in the Republic of Korea and the number of introduced species found in the wild is increasing. However, the current status of non-native turtles in the wild is not well known, posing major challenges to their management. In this study, we aimed to determine the current status of non-native turtles introduced into the wild in Korea. We analyzed the factors associated with the detection and distribution of non-native turtles. In total, 1587 of non-native turtles (three families, six genera, and 13 species including subspecies) were found in 648 sites in Korea: Chelydra serpentina, Mauremys sinensis, Chrysemys picta bellii, Graptemys ouachitensis, G. pseudogeographica pseudogeographica, G. p. kohni, Pseudemys concinna, P. nelsoni, P. peninsularis, P. rubriventris, Trachemys scripta elegans, T. s. scripta, and T. s. troostii. There was relationship between the distribution of non-native turtles and environmental factors such as precipitation and temperature. Moreover, human factors such as number of human populations and size of region were significantly related with the distribution and number of non-native turtles. In conclusion, it is likely that human factors are associated with the influx of invasive turtles to the natural habitat, while the possibility of survival and adaption for the turtles is associated mainly with environmental factors. Our result will be an essential guideline not only for understanding the current status of non-native turtles in Korea, but also for establishing strategies for management and control.

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21

"Pseudemys nelsoni." CABI Compendium CABI Compendium (January 7, 2022). http://dx.doi.org/10.1079/cabicompendium.45208432.

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22

Parés-Casanova, Pere Miquel, and Albert Martinez-Silvestre. "Relationship between Plastron Color and Nutrition in Pseudemys nelsoni Carr, 1938." World's Veterinary Journal, January 25, 2022, 81–86. http://dx.doi.org/10.54203/scil.2022.wvj11.

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Body coloration of emydids can be triggered by different types of factors. Therefore, the current study aimed to investigate the changes in plastron color of Florida Red-bellied Turtle Pseudemys nelsoni (P. nelsoni Carr, 1938), an emydid of North America. In the current study, 15 (3 males and 12 females) fresh corpses of captive-reared adult specimens of P. nelsoni were analyzed using digital images as well as applying geometric morphometrics and color photo processing techniques. Plastron color had no relationship with size nor fluctuating asymmetry, which could be considered as a negative proxy for stress. Moreover, there were no significant differences between males and females in this regard. It can be suggested that reddish on plastron for P. nelsoni was highly related to feeding, compared to other external factors, such as age, size, or stress. In wild P. nelsoni populations, reddish plastral coloration was related to body size probably due to ontogenetic differences in the diet, as juveniles are omnivorous. Since adults are herbivores, reddish fading observed in the samples of the current study would be a mere expression of unnatural colors, which can probably be linked to unbalanced feeding. The results of the current research could contribute to the understanding of the ways color changes appear in captive turtles in response to differences in dietary access to carotenoids.

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