A System of Marking Turtles for Future Identification

Cagle, Fred R.

doi:10.2307/1436818

Cited by 641 publications

(313 citation statements)

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“…Posteriormente, os filhotes foram separados em recinto especial conhecido como maternidade, onde ficaram durante um período médio de 24-48 h, sem receber qualquer tipo de alimentação, para favorecer a absorção completa do vitelo residual e cicatrização umbilical. Os filhotes foram identificados com cortes transversais em uma ou mais placas marginais da carapaça com o uso de lâminas de bisturi de acordo com metodologia adotada por Cagle (1939) e adaptada para este estudo.…”

Section: Methodsunclassified

Incubação de ovos e desenvolvimento pós-natal de Kinosternon scorpioides (Linnaeus, 1766) (Testudines, Kinosternidae) cativos

Guimarães

Silva²,

Palha

2017

Pubvet

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RESUMO. Este trabalho teve como objetivo descrever a incubação artificial de ovos deKinosternon scorpioides (Linnaeus, 1766) e verificar se houve influência da temperatura e umidade sobre o peso e o tamanho dos neonatos em cativeiro. Foram coletados 51 ovos no recinto de reprodução do Criadouro Científico do Projeto Bio-Fauna -ISARH/UFRA, Belém, Pará, os quais foram mantidos em seis incubadoras sob permanente controle térmico e hídrico, com os valores de temperatura e umidade constantes, fixados em 29,6 ºC e 79,0% (incubadora 1), 30,5 ºC e 78,8% (incubadora 2), 31,5 ºC e 78,7% (incubadora 3), 36,5 ºC e 74,0% (incubadora 4), 37,5 ºC e 73,8% (incubadora 5) e 38,5°C e 73,9% (incubadora 6). Os neonatos obtidos foram pesados e os parâmetros biométricos foram mensurados semanalmente por sete semanas. Ocorreram nascimentos nas incubadoras 1 e 2 e as crias geradas apresentaram peso e tamanho corporal diferentes (P < 0,05), mantendo essa diferença durante sete semanas após o nascimento. A temperatura e umidade de incubação influenciaram no peso e no tamanho de filhotes neonatos de K. scorpioides. Palavras chave: Animais silvestres, quelônios, reprodução, répteis Egg incubation and postnatal development of Kinosternon scorpioides (Linnaeus, 1766) (Testudines, Kinosternidae) captiveABSTRACT. This paper has as objective to describe the artificial incubation of eggs Kinosternon scorpioides (Linnaeus, 1766) and check the influence of incubation temperature and moisture on the weight and size of neonates in captivity. Excavations were performed daily in the area of spawning grounds reproduction of Scientific Breeding Projeto Bio-Fauna -ISARH/UFRA, Belém, Pará. The 51 eggs collected were kept in six incubator with values temperature and moisture constants, set at 29,6 ºC and 79,0% (incubator 1), 30,5 ºC and 78,8% (incubator 2), 31,5 ºC and 78,7% (incubator 3), 36,5 ºC and 74,0% (incubator 4), 37,5 ºC and 73,8% (incubator 5) and 38,5ºC and 73,9% (incubator 6). The infants were weighed and the biometric parameters were measured. Births occurred in incubator 1 and 2 and the neonates showed different weight and body size (p<0,05), this difference was maintained during seven weeks after birth. The incubation temperature and moisture influenced the weight and size of the puppies of K. scorpioides.

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Section: Methodsunclassified

Incubação de ovos e desenvolvimento pós-natal de Kinosternon scorpioides (Linnaeus, 1766) (Testudines, Kinosternidae) cativos

Guimarães

Silva²,

Palha

2017

Pubvet

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“…Limb and tail injuries were recorded, as well as presence/absence of parasites and shell abnormal-ities. Posterior carapace marginal scutes were marked for later individual identification (Cagle 1939), using a 6 mm rat-tail file that made permanent U-shaped notches, with a numbering system adapted by Saumure (1995*) from one described by Froese and Burghardt (1975).…”

Section: Methodsmentioning

confidence: 99%

Ecological Aspects of a Wood Turtle, <em>Glyptemys insculpta</em>, Population at the Northern Limit of its Range in Québec

Walde¹,

Bider²,

Daigle

et al. 2003

Can Field Nat

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As part of a conservation research initiative, a population of Wood Turtles (Glyptemys insculpta) at the northern limit of its range was studied to ascertain characteristics of its demographics, morphometrics, density, mortality, feeding, and mating activities. Turtles were captured and marked during the activity period in 1996 and 1997. In addition, 20 individuals were radio-tracked weekly. A total of 188 turtles was captured and the size of the population in the study area was estimated at 238 turtles. The estimated population density based on this calculation is 0.44 turtles/ha. This is less than other studies indicating that population densities are greater in southern populations. Turtles from this population were large (carapace length of males=214.5 ± 4.21 mm, females=201.1 ± 10.88 mm) which supports the hypothesis that turtle size is negatively correlated with number of frost free days. The sex ratio was not significantly different from 1:1. Juvenile turtles accounted for 31.4% of the population. Observations of feeding habits support the claim that Wood Turtles are opportunistic omnivores. Of the 35 mating or courtship events observed, 77 % occurred in the fall and half of them between 11:00 and 13:00. Although limb and tail injuries and parasites were observed on many turtles, no dead turtles were observed. This last result, combined with the high rate of recruitment and even sex ratio suggests that this population is stable, making it an ideal population with which to make comparisons with other studies in areas where the species could be in decline.

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“…Juvenile plastron length and turtle weights averaged 5.91 ± 0.56 cm and 58.15 ± 11.63 g, respectively. Juveniles were identified by carapace scoot markings (Cagle, 1939) and were housed in 10-gallon glass aquaria with light/dark cycles as described above. Juveniles were fed standard reptile pellet food (Tiger Shark Pets, Auburn, AL).…”

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confidence: 99%

Sexual dimorphism and developmental expression of signal‐transduction machinery in the vomeronasal organ

Murphy

Tucker

Fadool

2001

J of Comparative Neurology

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We have explored the use of a new model to study the transduction of chemosignals in the vomeronasal organ (VNO), for which the functional pathway for chemical communication is incompletely understood. Because putative vomeronasal receptors in mammalian and other vertebrate models belong to the superfamily of G-protein-coupled receptors, the objective of the present study was to define which G-protein subunits were present in the VNO of Sternotherus odoratus (stinkpot or musk turtle) in order to provide directionality for future functional studies of the downstream signaling cascades. The turtle vomeronasal epithelium (VNE) was found to contain the G-proteins G β and G αi1-3 at the microvillar layer, the presumed site of signal tranduction in these neurons, as evidenced by immunocytochemical techniques. G αo labeled the axon bundles in the VNE and the somata of the vomeronasal sensory neurons but not the microvillar layer. Densitometric analysis of Western blots indicated that the VNO from females contained greater concentrations of G αi1-3 compared with males. Sexually immature (juvenile) turtles showed intense immunolabeling for all three subunits (G β , G αi1-3 , and G αo ) in the axon bundles and an absence of labeling in the microvillar layer. Another putative signaling component found in the microvilli of mammalian VNO, transient receptor potential channel, was also immunoreactive in S. odoratus in a gender-specific manner, as quantified by Western blot analysis. These data demonstrate the utility of Sternotherus for discerning the functional signal transduction machinery in the VNO and may suggest that gender and developmental differences in effector proteins or cellular signaling components may be used to activate sex-specific behaviors. Indexing termsG proteins; GTP-binding protein; vomeronasal organ; turtle; transient receptor potential; transient receptor potential channel Sensory systems capture information from the environment and convey these signals to higher cortical centers in the brain, where the signals are processed to render an internal depiction of the external world (Dulac and Axel, 1995). In several classes of vertebrates, chemical sensory perception is mediated by sensory neurons at two anatomically distinct locations: the main olfactory epithelium (MOE) and the vomeronasal organ (VNO; Winan and Scalia, 1970;Broadwell, 1975;Scalia and Winan, 1975;Kevetter and Winan, 1981;Shepherd, 1988). Although they are of similar embryonic and neuronal origin (Cuschieri and Bannister, 1975), the two olfactory systems appear to diverge in function. (Halpern, 1987): The sensory neurons have unique biophysical properties (Liman and Corey, 1996); the molecular identities of putative transduction proteins that involve G-protein-coupled signaling cascades are notably different (Dulac and Axel, 1995;Ryba and Tirindelli, 1997); and, finally, the sensory information transmitted from each olfactory system is directed to different brain regions (for review, see Keverne, 1999). Hence, the VNO emerges as ...

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A System of Marking Turtles for Future Identification

Cited by 641 publications

References 0 publications

Incubação de ovos e desenvolvimento pós-natal de Kinosternon scorpioides (Linnaeus, 1766) (Testudines, Kinosternidae) cativos

Incubação de ovos e desenvolvimento pós-natal de Kinosternon scorpioides (Linnaeus, 1766) (Testudines, Kinosternidae) cativos

Ecological Aspects of a Wood Turtle, <em>Glyptemys insculpta</em>, Population at the Northern Limit of its Range in Québec

Sexual dimorphism and developmental expression of signal‐transduction machinery in the vomeronasal organ

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