spermatozoa characteristics in six psittacine species using light microscopy.even though breeding of companion birds has increased continuously for years, the fecundity assessment of birds has hardly been acknowledged. knowledge of the structure of spermatozoa is crucial for evaluation of the basic reproductive biology of any species as well as for phylogenetic research and cladistic analyses of internal relationships. spermatozoa of six different psittacine species (nymphicus hollandicus, myiopsitta monachus, agapornis roseicollis, melopsittacus undulatus, tanygnathus l ...200920456089
complete mitochondrial genome of blue-crowned parakeet (aratinga acuticaudata)--phylogenetic position of the species among parrots group called parakeet (aratinga acuticaudata) is a south american parrot species with a taxonomic position not confirmed by molecular studies. we sequenced full mitochondrial genome and constructed phylogenetic tree using sequences of mitochondrial nd2 gene from a. acuticaudata and some other representatives of conures group. our results confirmed previously described distribution of aratinga species into three clades, but surprisingly did not classify blue-crowned parakeet to any of them. we fo ...201323351080
hematologic reference values for clinically healthy captive golden conures (guaruba guarouba).golden conures or ararajubas (guaruba guarouba) are endangered parrots endemic to the brazilian amazon forest. body mass, blood cell counts, and total plasma protein were determined for 70 clinically healthy golden conures captive at zoologic parks and private breeder facilities in brazil. hematologic results (mean +/- sd) were: erythrocytes 3.6 +/- 0.5 x 10(6) cells/mm3, hemoglobin 12.8 +/- 1.4 g/dl, packed cell volume 46 +/- 3.8%, mean corpuscular volume 132 +/- 20 fl, mean corpuscular hemoglo ...201223397841
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