Laboratório de Tecnologia Educacional BIBLIOTECA DIGITAL               DE CIÊNCIAS

Esquemas simplificados (geral) das vias bioquímicas de degradação de proteínas, bases púricas e pirimídicas nas principais classes de animais. Os esquemas contribuem na compreensão comparativa das vias bioquímicas das diferentes classes.

O áudio trata, de maneira introdutória, sobre como doenças parasitárias, bacterianas e virais se desenvolvem de maneira diferente em classes sociais distintas.

Just like other seedeaters, it is practically impossible to tell this species apart from the brownish females, virtually identical to the other seedeaters’ females. Nevertheless the males present the chest and the head in black, the upper parts dark brown and the belly is yellow or beige. Its behavior is very similar to other seedeaters and may form mixed groups with other species when not breeding. It is less urban than the Double-collared and the Lined Seedeaters, being more common in grasslands and grain crops. May be raised as a cage bird. In the breeding season the couples split from the groups. The nest is a low bow made of grasses and the female usually lays 2 or 3 eggs.

16cm. Identification: The male is practically unmistakably recognized for the fully barred body and a black crest in the head. The female is ferruginous and has a crest and is barred in the head. It is currently the only antshrike which lives in really urban and disturbed areas. It is worth reminding that this bird has only recently conquered the urban environment. In the early 80s the first records of this antshrike in large cities were so unexpected that they yielded notes in scientific papers. Like other antshrikes it lives in couples, leaping and flying from branch to branch, usually through the short trees’ canopy in search for the small arthropods it feeds on. In the breeding se...