Laboratório de Tecnologia Educacional BIBLIOTECA DIGITAL               DE CIÊNCIAS

Physical appearence: 12cm. The upper parts are grayish with black and ferruginous stripes The chest is light brown with spots in the immature. There are yellow ribbons above the eyes and in the wings. The coloration may change when it is dirty due to contact with earth. Distribution: The Grassland Sparrow is found east of the Andes from Colombia to central Argentina but is missing from the Amazon Basin upstream from the Tapajós river. Habitat: Dry fields with grass, cerrado and crops. Diet: Feeds on grains and small insects. Reproduction: During the breeding season they live in pairs in a territory defended by the male. The nest is opened and placed on the ground. The eggs are ...

Physical appearance: 11 cm. The upper parts are dark and the inferior parts yellow. There is a white bar in the supercilium. The females are smaller than the males. The immature individuals have grey belly and do not have the bar above the eye. Distribution: From Mexico to Chile. Habitat: Inhabits various environments provided there is plenty of trees and flowers. Diet: Feeds mainly on nectar. Also eats insects. Visits hummingbird feeders. Reproduction: Builds two kinds of nest. A breeding one that is compact with thick walls and a resting nest made of leaves, grass and spider webs. Lays two or three white eggs. Only the female incubates. The male helps feeding the brood with i...

35cm Similarly to other Brazilian jays, the Curl-crested jay has white lower parts and blue and black upper parts. It may be confused with the Plush-crested jay (Cyanocorax chrysops), but while the last presents the crest in the back of the head, the yellow iris and a blue patch around the eyes, the Curl-crested jay presents the crest on the forehead, the red iris and the head is entirely black. Whereas the Old World ravens are mostly black, as well as the crows, the Brazilan corvids are colorful and most of them have white lower parts. There are 6 species of jays in Brazil, all of them extremely beautiful. The Curl-crested jay is one of Brazilian’s noisiest jays. To make the nois...

25 cm. The upper parts are brown, the inferior light brown. There are white wingbars . The supercilium and the edging of the tail are white. Male and female are similar. Distribution: South of Amazon to Paraguay, Uruguay, Argentina and Bolivia. Habitat: Open areas with some trees or scrubs, cerrado, caatinga (Brazilian scrubland) and urban areas. Diet: Feeds on insects and spiders caught on the ground. Also eats small fruits and seeds. Sometimes prey on other bird’s eggs. Reproduction: The nest is built about 1,5m from the ground on a small tree or scrub. The external part is made of thick branches and the interior of thin roots and grass. It may have up to four broods a year, e...

18cm Unlike the Red-crested Cardinal ( Paroaria coronata ) the Red-cowled Cardinal does not have a crest and the absence of black patches on the head and throat distinguishes this from the other Brazilian cardinals. This bird is endemic to the Brazilian Northeastern semi-arid region called ``Caatinga´´ where it is undoubtedly one of the most beautiful songbirds. Its beaty often costs its freedom as thousands of these birds are captured in the wild to be kept as cage birds. There is large illegal traffic of these birds throughout Brazil and even to other countries. Several specimens, and even established breeding populations have been reported considerably far from its original distr...

11,5cm. Identification: there is no other Brazilian species like this bird, at least not in urban and disturbed areas. Formerly all the house wren populations ranging from Canada to Chile were considered as a single species, but after several studies the populations south to Mexico were renamed as the Tropical House Wren (Troglodytes musculus ). This hyperactive bird hops non-stop on the ground in search for the small invertebrates it feeds on, reminding a mouse (musculus = mouse ). It only perches to rest or to sing. Its song is very complex and melodic, like other well known members of the Troglodytidae family. It is famous for the breeding behavior, as this bird may nest in the mos...

Nome popular: araçarana.

�rvore até 11m; extremidade dos ramos glabra, ramos jovens achatados na extremidade superior com tricomas ferrugíneos e pontuações vináceas; folha simples, oposta, sem estípula, pecíolo sulcado, 1,5 X 0,1cm, tomentuloso, pontuações vináceas, diminutas, numerosas, lâmina ovada ou oval-elíptica, ápice agudo, base cuneada algo assimétrico, 16 X 9cm, margem inteira, membranácea, venação camptódroma, 7-8 pares de nervuras secundárias, par inferior geralmente oposto ou suboposto, venação terciária paralela, conspícua, tricomas esparsos, pontuações vináceas, opacas, diminutas, numerosas, dispersa po...

Nome popular: araçarana.

�rvore até 6m; extremidade dos ramos ferrugínea-tomentulosa, glabrescente, achatada, pontuações nigrescentes; folha simples, oposta, sem estípula, pecíolo canaliculado, 1 X 0,1cm, ferrugíneo-tomentuloso, nigrescente no material seco, lâmina elíptico-oval a elítptico-oblonga, ápice longo-acuminado, base cuneada, 12-14 X 4-5,5cm, margem inteira, cartácea, venação camptódroma, ca. 20 pares de nervuras secundárias inconspícuas, venação terciária inconspícua, nervura margina ca. 0,1cm da margem, glabra na face adaxial, esparso-tomentosa na abaxial, pontuações translúcidas, diminutas, numerosas, disp...

Nome popular: araçarana.

�rvore até 15m; extremidade dos ramos glabra, levemente achatada, às vezes descamante, gema apical com brácteas numerosas; folha simples, oposta, sem estípula, pecíolo sulcado, 2 X 0,4cm, nigrescente no material seco, lâmina elíptico-oboval a elíptico-oblonga, ápice abrupto-acuminado, base aguda a atenuada, 33 X 13cm, margem inteira, coriácea, venação camptódroma, ca. 28 pares de nervuras secundárias, mais conspícuas na face abaxial, espaçadas ca. 1cm, venação terciária inconspícua, nervura marginal ca. 0,2cm da margem, face abaxial glabra, glabrescente na face abaxial, pontuações translúcidas, ...

Nome popular: araçarana.

�rvore até 18m; extremidade dos ramos amarelado-tomentulosa a glabrescente, achatada; folha simples, oposta, sem estípula, pecíolo canaliculado, 0,8 X 0,1cm, tomentoso, lâmina elíptica ou elíptico-rombica, ápice acuminado, base atenuada, 12 X 5cm, margem inteira, membranácea a sub-cartácea, venação camptódroma, 8-10 pares de nervuras secundárias, subopostas, pouco conspícua, espaçadas ca. 1cm, venação terciária inconspícua, nervura marginal 0,3cm da margem, face abaxial tomentosa, pontuações translúcidas, diminutas, numerosas, dispersas por toda a lâmina, visíveis contra a luz.

Leia Mais

This software shows a computational model to dinamically and visually explore the cAMP signaling system to facilitate its understading. The animation is shown in parts, from the hormone-receptor binding to the cellular response. There are some questions to be answered after using the model.
Article published about this software:
Yokaichiya DK, Fraceto LF, Miranda MA, Galembeck E, Torres BB. AMPc - Sinalização Intracelular: Um Software Educacional. QUIMICA NOVA 27 (3): 489-491 MAY-JUN 2004

Nome popular: -.

�rvore até 10m; extremidade dos ramos achatada, glabra; folha simples, oposta, sem estípula, pecíolo canaliculado, 0,6 X 0,1cm, glabro, nigrescente no material seco, lâmina oboval a oboval-elíptica, ápice longo-acuminado, caudado, base cuneada, 5,5 X 1,5cm, margem inteira, membranácea, venação camptódroma, nervuras secundárias inconspícuas, venação terciária inconspícua, nervura marginal 0,1cm da margem, glabra, pontuações, translúcidas, numerosas, conspícuas, dispersas por toda a lâmina, visíveis contra luz.