Pelecaniformes
Mostrando 13-15 de 15 artigos, teses e dissertações.
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13. Cuidado parental de Sula leucogaster (Boddaert) (Aves, Pelecaniformes, Sulidae) nas Ilhas dos Currais, Paraná, Brasil
In Sula leucogaster (Boddaert, 1783) it happens a brood reduction from two to one egg. The eggs hatch asynchronously and it is rare for the second chick to survive for long. A quantify parental investment is proposed and the differences between males and females of Sula leucogaster is verified for to help to understand the brood reduction. The studies were c
Revista Brasileira de Zoologia. Publicado em: 2003-12
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14. Diversidade de avifauna aquática nas represas do médio e baixo Rio Tietê (SP) e nos sistema de lagos do médio Rio Doce (MG) e sua relação com o estado trófico e a morfometria dos ecossistemas aquáticos.
Relationships between aquatic birds and the trophic state of freshwaters are not well known in tropical systems. In the present work the influence of some limnological variables on the structure of the aquatic bird comunnity was investigated for two distinct freshwater systems: The cascade of reservoirs in the middle and low portions of Tietê River (SP) and
Publicado em: 2003
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15. Molecules vs. morphology in avian evolution: the case of the "pelecaniform" birds.
The traditional avian Order Pelecaniformes is composed of birds with all four toes connected by a web. This "totipalmate" condition is found in ca. 66 living species: 8 pelicans (Pelecanus), 9 boobies and gannets (Sula, Papasula, Morus), ca. 37 cormorants (Phalacrocorax), 4 anhingas or darters (Anhinga), 5 frigatebirds (Fregata), and 3 tropicbirds (Phaethon)