Some cases of lymphoid leukosis in captive wild birds

Wadsworth, P.F.; Jones, D. M.; Pugsley, S. L.

doi:10.1080/03079458108418500

Cited by 21 publications

(16 citation statements)

References 3 publications

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“…Lymphoid tumours have been reported from many avian species (for example Wadsworth et al, 1981;Loupal, 1984). They have been described as Marek's disease or lymphoid leukosis on morphological grounds, but the causative viruses have not been isolated from them.…”

Section: Discussionmentioning

confidence: 99%

Observations on naturally occurring neoplasms in birds in the state of Victoria, Australia

Reece

1992

Avian Pathology

147

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SUMMARYForty-five types of naturally occurring neoplasms (383 cases) were identified in 69 avian species (excluding domestic fowl), belonging to 25 Families from 13 Orders. The most prevalent tumours were lymphomas (63 cases in 25 species), fibromas and fibrosarcomas (62 cases in 15 species), and lipomas and liposarcomas (56 cases in 16 species). There were mesenchymal tumours of the foot-pad in 13 Anseriformes, and a variety of tumours involving the reproductive tract of many species. Brief descriptions of the different neoplasms are given.

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Section: Discussionmentioning

confidence: 99%

Observations on naturally occurring neoplasms in birds in the state of Victoria, Australia

Reece

1992

Avian Pathology

147

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“…Broilers and laying hens are affected more often, although turkeys and quail are also susceptible. Cases of lymphoid leukosis of passerines and galliform species were also reported (Nobel, 1972;Palmer & Stauber, 1981;Wadsworth et al;Loupal, 1984;Martins et al, 2004;Hatai et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

“…In lymphoid leukosis, caused by retrovirus, neoplastic nodules may develop in the viscera and skin tissue of birds (Harrison & Harrison 1986;) with a predominance in liver and spleen (Wadsworth et al, 1981;Fowler).…”

Section: Introductionmentioning

confidence: 99%

Viral Research in Brazilian Owls (Tyto alba and Rhinoptynx clamator) by Transmission Electron Microscopy

et al. 2010

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SUMMARY:The barn-owl (Tyto Alba) and striped-owl (Rhinoptynx clamator) belong respectively to the families Tytonidae and Strigidae. Avian paramyxoviruses have been isolated from a variety of species of wild and domestic birds wordlwide causing diverse clinical symptoms and signs. Paramyxoviruses belong to the family Paramyxoviridae and Avulovirus genus, including nine serotypes (APMV 1 to 9). The lymphoid leukosis is a retrovirus-induced neoplasia. The avian retroviruses belong to the Retroviridae family and to the Alpharetrovirus genus. Coronaviruses can cause respiratory and enteric disease in several species of birds. They belong to the Coronaviridae family and to the groups 3a e 3c. In this study, we describe the presence of viruses in four owls, two barn owls (Tyto alba) and two striped owls (Rhinoptynx clamator), rescued from tree-lined streets of Sao Paulo, Brazil and sent to the Recovery Center of Wild Animals of the Tietê Ecological Park, where the animals died. Fragments of lung, liver and small intestine of these birds were processed for transmission electron microscopy utilizing negative staining (rapid preparation), immunoelectron microscopy and immunocitochemistry techniques. Under the transmission electron microscopy paramyxovirus particles, pleomorphic, roughly spherical or filamentous, measuring 100 to 500 nm of diameter containing an envelope covered by spikes, an herring-bone helical nucleocapsidlike structure, measuring 15 to 20 nm in diameter, were visualized in the samples of lung, liver and small intestine of all owls. In small intestine samples of the two striped-owl (owls 3 and 4) it was detected pleomorphic coronavirus particles with a diameter of 75-160 nm containing a solar corona-shaped envelope, with projections of approximately 20 nm of diameter. In liver fragments of one striped-owl (owl 4) pleomorphic particles of retrovirus with a diameter of 80-145 nm containing an envelope with short projections and diameter of 9 nm were observed. The presence of aggregates formed by antigen-antibody interaction, characterized the positive result obtained during the immunoelectron microscopy technique for paramyxovirus, retrovirus and coronavirus. In the immunocytochemistry technique, the antigen-antibody interaction was strongly enhanced by the dense colloidal gold particles over these viruses.

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“…Lymphoid leukosis has been reported in several species of both captive and free living non-gallinaceous wild birds but such cases appear to be relatively infrequent which makes aetiological studies difficult (Wadsworth et al, 1981). It is somewhat surprising that neoplasms in general have only rarely been reported in birds of prey, despite the long life span of many captive birds (Cooper, 1978).…”

Section: Discussionmentioning

confidence: 99%

Lymphoid leukosis in a captive Merlin(Falco columbarios)

Higgins¹,

Hannam²

1985

Avian Pathology

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Some cases of lymphoid leukosis in captive wild birds

Abstract: A total of 1,234 post mortem examinations of captive wild birds was carried out during a 5-year observation period. Six cases of lymphoid leukosis were found and their pathological features are described.

Cited by 21 publications

References 3 publications

Observations on naturally occurring neoplasms in birds in the state of Victoria, Australia

Observations on naturally occurring neoplasms in birds in the state of Victoria, Australia

Viral Research in Brazilian Owls (Tyto alba and Rhinoptynx clamator) by Transmission Electron Microscopy

Lymphoid leukosis in a captive Merlin(Falco columbarios)

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