| a longitudinal study on avian polyomavirus-specific antibodies in captive spix's macaws (cyanopsitta spixii). | avian polyomavirus (apv) causes a range of disease syndromes in psittacine birds, from acute fatal disease to subclinical infections, depending on age, species, and other unidentified risk factors. to determine the prevalence of apv-specific antibodies in a captive population of spix's macaws (cyanopsitta spixii) in quatar, 54 birds were tested by blocking enzyme-linked immunosorbent assay. a prevalence of 48.1% for apv antibodies, which indicates viral exposure, was found. of 36 spix's macaws t ... | 2010 | 21046939 |
| comparative analysis of microsatellite variability in five macaw species (psittaciformes, psittacidae): application for conservation. | cross-amplification was tested and variability in microsatellite primers (designed for neotropical parrots) compared, in five macaw species, viz., three endangered blue macaws (cyanopsitta spixii [extinct in the wild], anodorhynchus leari [endangered] and anodorhynchus hyacinthinus [vulnerable]), and two unthreatened red macaws (ara chloropterus and ara macao). among the primers tested, 84.6% successfully amplified products in c. spixii, 83.3% in a. leari, 76.4% in a. hyacinthinus, 78.6% in a. c ... | 2011 | 21734841 |
| the use of semen evaluation and assisted reproduction in spix's macaws in terms of species conservation. | the spix's macaw (cyanopsitta spixii) is the rarest parrot on earth. the remaining captive population consists of 79 individuals. captive propagation is ongoing to increase the number of individuals for future reintroduction back into the wild. unfortunately, from 2004 to 2012, only 33 chicks hatched from 331 eggs. semen evaluation and assisted reproduction might help to overcome this problem. therefore, a recently developed electro-stimulated semen collection technique was used in spix's macaws ... | 2014 | 24752991 |
| radiographic measurement of internal organs in spix's macaws (cyanopsitta spixii). | radiology is an important diagnostic instrument in avian medicine, but standard measurement ranges for the objective evaluation of radiographs of birds are rare. to establish radiographic reference ranges for the critically endangered spix's macaw (cyanopsitta spixii), we measured radiographic silhouettes of the heart, liver, kidneys, spleen, proventriculus, and keel of the sternum on 29 radiographs taken under standardized conditions in adult and juvenile, clinically healthy birds. ratios were ... | 2011 | 22458180 |
| analysis of growth rate variables and postfeeding regurgitation in hand-reared spix's macaw (cyanopsitta spixii) chicks. | the spix's macaw, or little blue macaw (cyanopsitta spixii), is one of the most critically endangered bird species in the world. in 1990, the brazilian nature conservation authority established a permanent committee to oversee the captive breeding of about 20 individual spix's macaws held in various locations throughout the world. al wabra wildlife preservation (awwp) successfully bred 10 spix's macaws in the 2005 and 2006 breeding seasons but intermittent episodes of postfeeding regurgitation i ... | 2008 | 19014091 |
| hematologic and plasma biochemical values of spix's macaws (cyanopsitta spixii). | the spix's macaw (cyanopsitta spixii) is considered the world's most endangered parrot, with the last wild bird disappearing in 2001 and only 74 birds in captivity. to establish hematologic and plasma biochemical reference ranges and to look for differences relative to sex, age, and season, we obtained blood samples from 46 captive spix's macaws (23 male, 23 female) housed in aviaries at the al wabra wildlife preservation in the state of qatar. no significant differences in hematologic or plasma ... | 2007 | 18351006 |