
Aline PoscaiSão Paulo State University | Unesp · Department of Zoology
Aline Poscai
PhD in Zoology
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16
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Publications (16)
The nictitating membrane is an anatomic structure exclusively exhibited by Carcharhiniformes, the largest order among sharks. Here we present a detailed description of morphological characteristics of the nictitating membrane through light microscopy (LM) and scanning electron microscopy (SEM) in the following shark species: Carcharhinus limbatus,...
The microstructures of the oral cavity in sharks have received relatively little study, despite their potential functional importance for gustation, feeding, and ventilation. Accordingly, here we conducted a preliminary comparative investigation into the structure and organization of oral papillae and denticles found on the ventral surface of the o...
The envenomation caused by freshwater stingrays is one of the most frequent injuries related to aquatic animals in South America. Such injury is severe with skin necrosis as a probable result of the sting and subsequent intense pain. Here, we characterized the accidents caused by freshwater stingrays in Juruá Valley, Acre, Brazil, with reports of p...
Oropharyngeal dermal denticles and oral papillae are present throughout the oropharyngeal cavity, and incorporate the use of taste buds to orally process and evaluate the food items, whereas oral denticles are thought to provide a form of protection against abrasion during food consumption and improve ventilation efficiency. Herein, are compared th...
Oral denticles of sharks are composed by a crown, dentine covered by a layer of enameloid and pulp cavity, the same structure of the dermal denticles found across the body surface of most elasmobranchs. In addition, oral papillae and taste buds are distributed among denticles within the oropharyngeal cavity, playing a fundamental role for tasting a...
The rectal gland (RG) is a specialized organ that performs a major role in salt excretion of marine elasmobranch species. We aimed to describe the rectal gland ecomorphology in three stingray species (Hypanus marianae, Hypanus guttatus, and Aetobatus narinari) from benthic and pelagic habitats. The gland is lobulated and has two distinct forms: sma...
Introduction: There are about 842 reptile species known in Brazil, including 799 Squamata, being the most diverse assemblage, comprising 72 amphisbaenians, 276 lizards, and 405 snakes. Lizards have adapted to different habitats with terrestrial, fossorial, arboreal, and semi-aquatic habits. These ecological differences are reflected in skull morpho...
Os teleósteos são revestidos por escamas, que estruturalmente são compostas por fina camada de osso lamelar acelular, não calcificado, que recobrem fibras de colágeno dispostas aleatoriamente, não perfuram a epiderme, mas estão próximas à superfície, dando a impressão de aspereza à pele. Apresentam dois padrões morfológicos de escamação de acordo c...
Fishery is one of the most important economic activities in the Amazon, which is responsible for 25% of the Brazilian fish production. However, there are few surveys related to identification of commercial fish species in many areas of the Amazon basin. Therefore we undertook a survey of the commercial fish species at the Resene de Souza Lima Marke...
Problem: Several mechanisms contribute to the tolerogenic state observed during pregnancy, such as the activity of the enzyme indoleamine 2, 3-dioxygenase (IDO). This initializes the catabolism of tryptophan, inducing T cells to apoptosis due to its deprivation and by the action of its catabolites in the placental microenvironment. Progesterone pla...
The morphology of birds is rarely reported, hindering veterinary practice in these animals. The respiratory system is distinguished by the presence of air bags, a structure of fundamental importance to the birds, but very susceptible to diseases. Thus, the objective of this study was to describe the anatomy of the air sacs (AS) in quails regarding...
Pregnancy is a physiological state that requires immune adaptation in order to be successfully carried on. During this period, mother and fetus establish an immune tolerance status at the maternal fetal interface. Indoleamine 2,3-dioxygenase (IDO) plays an important role in maternal-fetal tolerance by metabolizing tryptophan, impairs by several pat...
A high diversity of sharks has been exploited by modern fisheries where are regularly caught as bycatch, or incidental catch in several fishing fleets. In 2002 about 25% of oceanic sharks caught worldwide were captured by vessels operating in the Atlantic Ocean, a proportion that is considered as underestimated due to discards and finning. A synthe...