Brenda Braga - Academia.edu (original) (raw)
Papers by Brenda Braga
Oryx
This study characterized the ethnoornithological knowledge of passerine bird keepers, known local... more This study characterized the ethnoornithological knowledge of passerine bird keepers, known locally as criadores or passarinheiros, who capture, train, breed and sell wild species in the eastern Amazonia of Brazil. The data were collected from 62 bird keepers through informal, semi-structured interviews and participant observation. The family Thraupidae was the most captured group, with 23 species used, predominantly of the genus Sporophila. Sporophila angolensis had the highest use value and price. Our findings suggest that conservation strategies should be a priority for Sporophila maximiliani, S. angolenses and Saltator maximus. The Passeriformes are obtained by capturing them from the wild, by captive breeding or in trade. They are trapped and sold locally, in nearby municipalities, and also in more distant locations as far as the border with Suriname, French Guiana and Guyana. On the international market, sale prices can reach USD 5,400 per individual bird. Species with both si...
Revista De Biologia Tropical, 2021
Introduction: Morphometrics analysis is an efficient and low-cost technique used in studies of se... more Introduction: Morphometrics analysis is an efficient and low-cost technique used in studies of sexual dimorphism in turtles. Kinosternon scorpioides scorpioides, scorpion mud turtle, has a wide phenotypic variation, depending on the area of its occurrence. Objective: The objective of this work was to identify the anatomical sexual difference of K. s. scorpioides, adults and hatchlings, through morphometric analysis; and relate the weights of adult animals to environmental factors (temperature and rainfall) in Marajo Island, Brazil. Methods: The sample collection was carried out from March to September 2018, covering both the rainy season (January to July) and the dry season (August to December). For the biometric analysis, 95 adults and 21 hatchlings were used, in which the length and width of the carapace and plastron, height of the shell, and weight were measured (adults only). For the geometric morphometry analysis, 21 adults and 13 hatchlings were used, in which 27 coordinates o...
The morphological study of limbs is important for the understanding of tetrapod biology, where it... more The morphological study of limbs is important for the understanding of tetrapod biology, where it can be applied to taxonomy and phylogeny, as well ecology and behavior. In this study area, osteogenesis is a subject in Kinosternidae, which has been little researched. The main aim of this study was to characterize the skeletogenesis of Kinosternon scorpioides limbs. Samples were histologically processed, and the embryos were cleared with potassium hydroxide and stained with alcian blue and alizarin red. It was observed that the limbs arose in embryonic Stage 10 as mesenchymal condensate cells. The first stylopodium chondrification centers were noted at Stage 14. Zeugopodium chondrification centers appeared at Stage 15; carpal, metacarpal, tarsal, and metatarsal regions were observed at Stage 16, and the cartilage molds of all bones limbs were present at Stage 18. Ossification began in the humerus and femur at Stage 20, and continued into the radius, ulna, tibia, and fibula bones. By ...
Zoomorphology
Few studies have been conducted on the reproductive biology and embryology of Kinosternon scorpio... more Few studies have been conducted on the reproductive biology and embryology of Kinosternon scorpioides. Determining the development of embryonic stages is essential for studies on comparative anatomy and phylogenetic relationships. The aim of this research was to examine the macroscopic embryonic development of K. scorpioides. At least three eggs were collected at incubation intervals of 5 days. After morphometry, embryos in stages 9–12 were classified in relation to the presence of pharyngeal arches, optic and otic vesicles, as well as sequential changes in both the forelimbs and hindlimbs. Embryos from stages 13 to 17 were identified through evident eye pigmentation, limb morphology, carapace appearance, and urogenital protuberance. From stages 19 to 22, the presence of digits on digital plates and pigmentation of the body were used for defining each of the stages. From stages 23 to 26, the digits and dense pigmentation on the body were used to define the stages and the disappearance of the urogenital protuberance and umbilical hernia. These results describe the ontogenetic changes that occur in this species, therefore facilitating the correct ex situ handling practices during incubation and serving as a basis for phylogenetic studies among the Kinosternidae.
Oryx
This study characterized the ethnoornithological knowledge of passerine bird keepers, known local... more This study characterized the ethnoornithological knowledge of passerine bird keepers, known locally as criadores or passarinheiros, who capture, train, breed and sell wild species in the eastern Amazonia of Brazil. The data were collected from 62 bird keepers through informal, semi-structured interviews and participant observation. The family Thraupidae was the most captured group, with 23 species used, predominantly of the genus Sporophila. Sporophila angolensis had the highest use value and price. Our findings suggest that conservation strategies should be a priority for Sporophila maximiliani, S. angolenses and Saltator maximus. The Passeriformes are obtained by capturing them from the wild, by captive breeding or in trade. They are trapped and sold locally, in nearby municipalities, and also in more distant locations as far as the border with Suriname, French Guiana and Guyana. On the international market, sale prices can reach USD 5,400 per individual bird. Species with both si...
Revista De Biologia Tropical, 2021
Introduction: Morphometrics analysis is an efficient and low-cost technique used in studies of se... more Introduction: Morphometrics analysis is an efficient and low-cost technique used in studies of sexual dimorphism in turtles. Kinosternon scorpioides scorpioides, scorpion mud turtle, has a wide phenotypic variation, depending on the area of its occurrence. Objective: The objective of this work was to identify the anatomical sexual difference of K. s. scorpioides, adults and hatchlings, through morphometric analysis; and relate the weights of adult animals to environmental factors (temperature and rainfall) in Marajo Island, Brazil. Methods: The sample collection was carried out from March to September 2018, covering both the rainy season (January to July) and the dry season (August to December). For the biometric analysis, 95 adults and 21 hatchlings were used, in which the length and width of the carapace and plastron, height of the shell, and weight were measured (adults only). For the geometric morphometry analysis, 21 adults and 13 hatchlings were used, in which 27 coordinates o...
The morphological study of limbs is important for the understanding of tetrapod biology, where it... more The morphological study of limbs is important for the understanding of tetrapod biology, where it can be applied to taxonomy and phylogeny, as well ecology and behavior. In this study area, osteogenesis is a subject in Kinosternidae, which has been little researched. The main aim of this study was to characterize the skeletogenesis of Kinosternon scorpioides limbs. Samples were histologically processed, and the embryos were cleared with potassium hydroxide and stained with alcian blue and alizarin red. It was observed that the limbs arose in embryonic Stage 10 as mesenchymal condensate cells. The first stylopodium chondrification centers were noted at Stage 14. Zeugopodium chondrification centers appeared at Stage 15; carpal, metacarpal, tarsal, and metatarsal regions were observed at Stage 16, and the cartilage molds of all bones limbs were present at Stage 18. Ossification began in the humerus and femur at Stage 20, and continued into the radius, ulna, tibia, and fibula bones. By ...
Zoomorphology
Few studies have been conducted on the reproductive biology and embryology of Kinosternon scorpio... more Few studies have been conducted on the reproductive biology and embryology of Kinosternon scorpioides. Determining the development of embryonic stages is essential for studies on comparative anatomy and phylogenetic relationships. The aim of this research was to examine the macroscopic embryonic development of K. scorpioides. At least three eggs were collected at incubation intervals of 5 days. After morphometry, embryos in stages 9–12 were classified in relation to the presence of pharyngeal arches, optic and otic vesicles, as well as sequential changes in both the forelimbs and hindlimbs. Embryos from stages 13 to 17 were identified through evident eye pigmentation, limb morphology, carapace appearance, and urogenital protuberance. From stages 19 to 22, the presence of digits on digital plates and pigmentation of the body were used for defining each of the stages. From stages 23 to 26, the digits and dense pigmentation on the body were used to define the stages and the disappearance of the urogenital protuberance and umbilical hernia. These results describe the ontogenetic changes that occur in this species, therefore facilitating the correct ex situ handling practices during incubation and serving as a basis for phylogenetic studies among the Kinosternidae.