Vascularização dos ovários, tubas uterinas e útero em catetos (Tayassu tajacu, Linnaeus, 1758) e queixadas (Tayassu pecari, Link, 1795)

Santos, Tatiana Carlesso dos; Miglino, María Angélica; Machado, Gilberto Valente; Souza, Wilson Machado de

doi:10.1590/s1413-95962000000400003

Braz. J. Vet. Res. Anim. Sci.

2000

DOI: 10.1590/s1413-95962000000400003

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Vascularização dos ovários, tubas uterinas e útero em catetos (Tayassu tajacu, Linnaeus, 1758) e queixadas (Tayassu pecari, Link, 1795)

Tatiana Carlesso dos Santos¹,

María Angélica Miglino²,

Gilberto Valente Machado³

et al.

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“…and uterine tube vascularization (Santos et al, 2000) and the lungs . However, a significant knowledge gap regarding the aortic collateral branches of this species is noted, a relevant aspect with potential implications for clinical-surgical procedures.…”

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confidence: 99%

Collateral aortic branches in the collared peccary (Pecari tajacu Linnaeus, 1758)

Gurgel

Sousa

Oliveira

et al. 2022

Anat Histol Embryol

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The determination of arterial vascular distribution patterns can contribute to more detailed knowledge on arterial systems. In this context, the aim of the present study was to describe the collateral aortic branches in the collared peccary, aiming to define a standard model for this species, providing information through comparative anatomy for analysis of some evolutionary aspects of the order Artiodactyla. Ten young male animals were employed. The vascular system was washed with a saline solution and then perfused with Neoprene 450 latex coloured with red or yellow pigment, followed by collateral aorta branch dissections and analyses. The contrasted digital radiography technique was applied to two animals, which were initially perfused with a barium sulphate solution (1 g/ml) and Neoprene 450 latex at a 1:3 ratio, and subsequently, the digital radiographic examination was performed. The aortic arch of the collared peccary emitted the brachiocephalic trunk and the left subclavian artery, while eight symmetric pairs of dorsal intercostal arteries originated from the thoracic aorta. The abdominal aorta, in turn, exhibited the celiac, cranial mesenteric, renal, caudal mesenteric, testicular, external iliac, internal iliac and sacral arteries as the collateral branches in all studied animals. Therefore, no relevant variations were observed regarding the arrangement of the arterial distribution of the aorta, thus suggesting a static standard model in the collared peccary.

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mentioning

confidence: 99%

Collateral aortic branches in the collared peccary (Pecari tajacu Linnaeus, 1758)

Gurgel

Sousa

Oliveira

et al. 2022

Anat Histol Embryol

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Macroscopic and Microscopic Aspects of Collared Peccary and White-lipped Peccary Placenta

et al. 2006

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Ovarian folliculogenesis in collared peccary, <i>Pecari tajacu</i> (Artiodactyla: Tayassuidae).

Guimarães

Garcia

Ferreira

et al. 2012

RBT

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Abstract:The sustainability and production of collared peccary (Pecari tajacu) has been studied in the last few years; however, further information on its reproduction is necessary for breeding systems success. Understanding folliculogenesis aspects will contribute to effective reproductive biotechniques, which are useful in the preservation and production of wildlife. The aim of this study was to evaluate the ovarian folliculogenesis in collared peccary. Ovaries from six adult females of collared peccary were obtained through ovariectomy and analyzed. These were fixed in aqueous Bouin's solution and sectioned into 7µm slices, stained with hematoxilin-eosin and analyzed by light microscopy. The number of pre-antral and antral follicles per ovary was estimated using the Fractionator Method. The follicles, oocytes and oocyte nuclei were measured using an ocular micrometer. Results showed that the length, width, thickness, weight, and the gross anatomy of the right and left ovaries were not significantly different. However, the mean number of corpora lutea was different between the phases of the estrous cycle (p<0.05), with the highest mean in the luteal phase. Primordial follicles were found in the cortex; the oocytes were enveloped by a single layer of flattened follicular cells. In the primary follicles, proliferation of the follicular cells gave rise to cuboidal cells (granulosa cells). The secondary follicle was characterized by two or more concentric layers of cuboidal cells (granulosa), beginning of antrum formation, and the presence of pellucid zone and theca cells. Antral follicles were characterized by a central cavity (antrum), the presence of cumulus oophorus and theca layers (interna and externa). In the right ovary, the values of the primordial and primary follicles were similar, but significantly different from the secondary ones (p<0.05). In the left ovary, significant differences were observed between all follicles in the follicular phase (p<0.05); the mean number of primordial and primary follicles was similar in the luteal phase. The mean number of pre-antral follicles and antral follicles in the follicular phase was higher in the left ovary (p<0.05). The mean number of antral follicles in the luteal phase was similar in both ovaries. We also found significant differences in mean diameter of preantral follicles, oocyte, granulosa layer and oocyte nucleus during the estrous cycle. In the antral follicles a significant difference was observed only in follicular diameter (p<0.05). The predominance of active primordial and primary follicles was found in both phases; otherwise the secondary follicles and antral follicles showed a high degree of degeneration. The results obtained in the present work will strengthen the development of biotechnology programs to improve the productive potential and conservation of the collared peccary. Rev. Biol. Trop. 60 (1): 437-445. Epub 2012 March 01.

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Vascularização dos ovários, tubas uterinas e útero em catetos (Tayassu tajacu, Linnaeus, 1758) e queixadas (Tayassu pecari, Link, 1795)

Cited by 3 publications

References 0 publications

Collateral aortic branches in the collared peccary (Pecari tajacu Linnaeus, 1758)

Collateral aortic branches in the collared peccary (Pecari tajacu Linnaeus, 1758)

Macroscopic and Microscopic Aspects of Collared Peccary and White-lipped Peccary Placenta

Ovarian folliculogenesis in collared peccary, <i>Pecari tajacu</i> (Artiodactyla: Tayassuidae).

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