Identificação sexual através do estudo anatômico do sistema urogenital em recém-eclodidos e jovens de Trachemys dorbignyi (Duméril &amp; Bibron) (Reptilia, Testudines, Emydidae)

Malvásio, Adriana; Gomes, Norma; Farias, Eduardo Cunha

doi:10.1590/s0101-81751999000100004

Cited by 10 publications

(13 citation statements)

References 9 publications

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“…Análises biométricas. Após 120 dias de adaptação ao cativeiro, animais clinicamente saudáveis (considerando-se a condição corporal; ausência de ectoparasitas, tumores e lesões cutâneas), com o auxílio de uma fita métrica e paquímetro de aproximação milimetral, tiveram determinadas a biometria corporal com aferições das dimensões máximas da carapaça [comprimento (CMC, cm) e largura (LMC, cm)]; do plastrão [comprimento (CMP, cm) e largura (LMP, cm)] (Malvasio et al 1999) e a biometria da cauda [comprimento total (CTC, cm)]; comprimento linear da base ao orifício cloacal (CprC, cm); e o comprimento linear do orifício cloacal a extremidade da cauda (CpoC, cm)]. A massa corporal (MC, gr) foi avaliada diretamente no visor da balança de precisão analí-tica (Bioprecisa ® , Labmais Ltda., Curitiba/PR, Brasil ).…”

Section: Introductionunclassified

Biometria corporal e parâmetros hematológicos de Trachemys scripta elegans e Trachemys dorbignyi (Testudines: Emydidae) criadas em cativeiro em Petrolina, Pernambuco

Gradela

Souza²,

Queiroz

et al. 2017

Pesq. Vet. Bras.

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ABSTRACT.-Gradela A., Souza V.N., Queiroz M.M., Constantino A.C., Bandeira C.G. This study aimed to evaluate the body biometry and hematological profile of Trachemys scripta elegans (N=28) and Trachemys dorbignyi (N=22) reared in captivity in the Brazilian submedium northeastern semi-arid region in the Valley of the São Francisco river. It aimed to establish basic health blood values and generate useful data on the comparative physiology of Testudines. After 120-day adaptation and 24-hour fasting, 2.5mL of blood were collected from the dorsal occipital sinus and deposited into a tube with sodium heparin for evaluation, following, of hematological levels. The red blood cell count (RBC) and GLC was conducted in a Neubauer chamber, the hemoglobin level (HGB) was supplied by the cyanmethemoglobin method and the hematocrit (HCT) was obtained by the microhematocrit technique. Based on the RBC, the hematimetric were mathematically established. Body biometry were also evaluated: a) body mass (BM, g); b) maximum dimensions of the carapace [length (MLC, cm) and width (MWC, cm)]; c) maximum dimensions of plastron [length (MLP, cm) and width (MWP, cm)]; d) total length of tail (TLT, cm); e) linear length from the base of the tail to the cloacal orifice (LPrC, cm); f) linear length from the cloacal orifice to the extremity of the tail (LPoC, cm). T. scripta elegans showed higher values (P<0.05) for biometrics, while TLT and LPrC were higher (P<0.05) in T. dorbignyi. The hematological values did not differ (P>0.05) among species. The results show that most of the variation found between T. scripta elegans and T. dorbignyi is explained by the biometric variables and that some hematologic correlations characterize interspecies differences. It was conclude that the results shed light on benchmarks for these species kept in captivity in the northeastern semi-arid region and serve as a model for intra and interspecies comparative physiology.

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Section: Introductionunclassified

Biometria corporal e parâmetros hematológicos de Trachemys scripta elegans e Trachemys dorbignyi (Testudines: Emydidae) criadas em cativeiro em Petrolina, Pernambuco

Gradela

Souza²,

Queiroz

et al. 2017

Pesq. Vet. Bras.

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“…Body biometry. After body thawing, the body mass (BM) was evaluated using the millimeter precision analytical balance (Bioprecisa  , Labmais Ltda., Curitiba/PR, Brazil), the maximum length (CL) and width (CW) of the carapace; the maximum length (PL) and width (PW) of the plastron using a tape measure (in cm) according to Malvasio et al (1999). Post-cloacal length (PoCL in cm) was analyzed with the aid of a millimeter precision caliper (Mitotoyo  ).…”

Section: Methodsmentioning

confidence: 99%

Reproductive biology, morphology, and morphometry of ovaries and oviducts of Trachemys scripta elegans in Brazilian Cerrado

et al. 2020

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Gradela A., Pires I.C., Matos M.H.T., Corrêa F.M., Faria M.D., Silva J.S., Torres L.R.C. & Milanelo L. 2020. Reproductive biology, morphology, and morphometry of ovaries and oviducts of Trachemys scripta elegans in Brazilian Cerrado. Pesquisa Veterinária Brasileira 40 (2):141-154. Although Trachemys scripta elegans is an exotic species popular as a pet in Brazil, studies on reproductive biology and capacity are non-existent in the Brazilian Cerrado. This study analyzed ovarian and oviduct characteristics and the egg production capacity of T. scripta elegans grown in this biome. The findings will associate with the size of the specimens and the sexual maturity, aiming at comparisons with native and exotic populations, as well as interspecific and contributing to the understanding of its impact on the invaded ecosystems and the establishment of eradication programs. Thus, 39 females had evaluated the body biometry and the morphology and morphometry of the ovaries and oviducts. G2 (N=20): with Class I (>5-10mm) follicles, with Class I and Class II (>10-fold) follicles, 25mm) and G3 (N=9) with Class I, Class II and Class III (>25mm) follicles. Analysis of variance, Scott-Knott's test, and Pearson's correlation analysis showed that there was no significant difference between the groups in body biometry; in the mean gonadosomatic index and gonadal morphometry, only the width of the oviducts in the right antimer and the mass and width in the left antimer were higher in G3, the only one that presented eggs. There was positive and harmonic development between body mass, carapace, and plastron, and gonadal growth occurred concomitantly with body growth, indicating a higher reproductive potential and a positive relationship between the size of the litter and the female litter. The gonadosomatic index proved to be an excellent reproductive indicator, and the ovarian evaluation was a better indicator of sexual maturity than the maximum carapace length. Ovaries were irregular structures, without delimitation between the cortical and medullary regions and filled with vitelogenic follicles of different diameters, atresic follicles, and corpora lutea, which reflected the ovarian complexity of the species and the presence of follicular hierarchy. In the scarce stroma, two germinative beds were observed per ovary and the presence of gaps very close to the follicles and associated with the blood vessels. Analysis of gonadal tissue revealed three types of oocytes according to cytoplasmic characteristics: homogeneous, vesicular or vesicular in the cortex with apparent granules. Oviducts were functional and separated, joining only in the final portion to form the cloaca and subdivided into infundibulum, tuba, isthmus, uterus, and vagina. The structure of the uterine tube was composed of serosa, muscular and mucous, which was full of glands. The presence of eggs in the oviducts indicated PVB-6299 MF

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“…We first sexed all neonates by direct inspection of gonadal anatomy (Malvasio and Gomes, 1999). We then removed the left gonad from each hatchling and fixed it in 10% buffered formalin, followed by staining with hematoxylin and eosin to corroborate via histological analysis the sex determinations made by inspection of gross gonadal anatomy (Danni and Alho, 1985;Estrada and Uribe, 2002).…”

Section: Methodsmentioning

confidence: 99%

Geographic Variation in Sex Determination Patterns in the River TurtlePodocnemis lewyana: Implications for Global Warming

Gallego‐García¹,

Páez²

2016

Journal of Herpetology

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Identificação sexual através do estudo anatômico do sistema urogenital em recém-eclodidos e jovens de Trachemys dorbignyi (Duméril & Bibron) (Reptilia, Testudines, Emydidae)

Cited by 10 publications

References 9 publications

Biometria corporal e parâmetros hematológicos de Trachemys scripta elegans e Trachemys dorbignyi (Testudines: Emydidae) criadas em cativeiro em Petrolina, Pernambuco

Biometria corporal e parâmetros hematológicos de Trachemys scripta elegans e Trachemys dorbignyi (Testudines: Emydidae) criadas em cativeiro em Petrolina, Pernambuco

Reproductive biology, morphology, and morphometry of ovaries and oviducts of Trachemys scripta elegans in Brazilian Cerrado

Geographic Variation in Sex Determination Patterns in the River TurtlePodocnemis lewyana: Implications for Global Warming

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