Amplicons of fpv167 and fpv140, of 578 and 1,800 bp, respectively, characteristic of the avipox viral genes, were amplified by PCR using DNA from viruses isolated from eight Indian wild birds. BLAST and phylogenetic analysis of the sequences of the fpv167 and fpv140 amplicons indicated that Fowlpox virus (FWPV) was the nearest phylogenetic neighbour to the viral isolates, from two Indian peacocks (Pavo cristatus), two golden pheasants (Chrysolophus pictus), one silver pheasant (Lopahura nycthemera) and one sparrow (Passer domesticus). However, the two isolates from the Indian little brown dove (Stigmatopelia senegalensis) and the common wood pigeon (Columba palumbus) formed a separate cluster with turkeypox and pigeonpox virus (PGPV) isolates when the phylogenetic tree was constructed using the sequence of fpv167. When the phylogenetic analysis was done using the fpv140 gene sequence both isolates formed a cluster with isolates of PGPV. Thus, the results support that fpv140 gene along with the fpv167 gene should be used for phylogenetic analyses of avipoxviruses for better discrimination of the viruses. Additionally, avian poxvirus isolated from wild birds of India were identical to those reported in Indian domestic birds, and phylogenetically related to avian poxviruses reported from different parts of the world. To our knowledge, this is the first molecular characterization of avian poxviruses infecting different wild birds in India. The study shows that FWPV and PGPV cause infection in wild birds irrespective of the species of birds indicating that these viruses are not species specific. Thus these viruses, which are not host specific have the ability to cause infection in game birds, endangered birds and domestic birds and therefore could spread easily.
The objective of this study was to investigate the ascarid infection in Asiatic lions using scat samples, based on microscopic analysis, PCR amplification of the ITS-2 region of ribosomal DNA and sequence analysis of the amplicons. Microscopic analysis indicated the presence of eggs of Toxascaris leonina in eleven of the sixteen scat samples analysed and in one of these eleven scats eggs of Toxocara cati were also detected. In five of the scats eggs were not detectable. The presence of T. leonina in all the infected samples was also confirmed by PCR amplification of the ITS-2 of ribosomal RNA gene and five of these also showed amplicons corresponding to T. cati, respectively. Toxocara canis infection was not observed in any of the scat samples. Nucleotide sequence analysis of the ITS-2 region indicated 97% to 99% similarity with T. leonina and T. cati, respectively. To our knowledge, this is the first molecular characterization of ascarid infection in captive Asiatic lions from a zoological garden of India. This study also indicates that Asiatic lions are more prone to infection either with T. leonina or T. cati and the parasite is not host specific.
The ability to rescue gametes from endangered or wildlife species and to subsequently produce viable embryos holds tremendous potential as a means to increase the population size of endangered or wildlife species. The objective of this study was to assess the developmental competence of gametes recovered from nilgai that had died because of foot and mouth disease outbreak. Oocytes collected from the ovaries of seven dead nilgais were allowed to mature in vitro and were tested for developmental potential by in vitro fertilization (IVF) with epididymal spermatozoa collected also post-mortem. The average number of oocytes (n = 517) recovered per ovary was 36.9, and the side (right or left), size and weight of the ovaries had no significant effect on the number and quality of oocytes recovered. In vitro maturation studies indicated that the proportion of matured oocytes (MII stage) at 18, 24 and 30 h was 55.6%, 63.4% and 63.6%, respectively. Furthermore, 43% of the matured oocytes cleaved following in vitro fertilization and 12% of the cleaved oocytes (6/49) developed to the 4-8 cell stage. These findings suggest that the gametes recovered from nilgai post-mortem could be utilized for in vitro production of embryos.
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