Vascularização arterial esplâncnica abdominal de cachorro-do-mato (Cerdocyon thous).

Abstract

Cerdocyon thous (dog-of-the-forest) is easily found in several biomes of South America, with three subspecies described in Brazil. However, there is little information described about morphological issues of these individuals, compromising the quality of life of rescued animals, victims of human action. This factor generates risks to the survival of the species, due to the lack of conservation measures and alarming possible risk of extinction in the near future. Knowing the anatomy of C. thous can represent a differential in emergency care for victims of the urbanization process. In this context, we highlight the abdominal arterial vascularization of this species, which is highly relevant for performing surgical procedures. Twelve adult specimens were dissected, between males and females, whose arterial system was evidenced with stained latex, and alterations were identified in some specimens when compared to domestic dogs. The jejunal arteries (Aa.) gave off nine branches to the jejunum, the artery (A.) caudal phrenic and cranial abdominal A. emerged from a common trunk, arranged on the dorsal surface of the abdominal aorta. The cranial abdominal A. was bifurcated and inserted into the cranial pole of the left kidney, while the left renal A. was bifurcated in one individual and in another specimen it was double and penetrating the renal pelvis region. One specimen presented the right kidney more caudal to the left kidney, in the same way the corresponding A. renal, A. left renal originated a bifurcation of the A. left adrenal and, finally, a bifurcation of the A. internal iliac right. Our findings allowed us to understand the differences between the abdominal arterial vascularization of C. thous and that of the domestic dog, which may be crucial in the clinical and surgical care of this species.