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Epidemiology and molecular phylogeny of Babesia sp. in Little Penguins Eudyptula minor in Australia.

Vanstreels RE, Woehler EJ, Ruoppolo V, Vertigan P, Carlile N, Priddel D, Finger A, Dann P, Herrin KV, Thompson P, Ferreira Junior FC, Braga ÉM, Hurtado R, Epiphanio S, Catão-Dias JL - Int J Parasitol Parasites Wildl (2015)

Bottom Line: Only round forms of the parasite were observed, and gene sequencing confirmed the identity of the parasite and demonstrated it is closely related to Babesia poelea from boobies (Sula spp.) and B. uriae from murres (Uria aalge).None of the Babesia-positive penguins presented signs of disease, confirming earlier suggestions that chronic infections by these parasites are not substantially problematic to otherwise healthy little penguins.We searched also for kinetoplastids, and despite targeted sampling of little penguins near the location where Trypanosoma eudyptulae was originally reported, this parasite was not detected.

View Article: PubMed Central - PubMed

Affiliation: Laboratory of Wildlife Comparative Pathology (LAPCOM), Department of Pathology, School of Veterinary Medicine and Animal Science, University of São Paulo, Brazil.

ABSTRACT
Blood parasites are potential threats to the health of penguins and to their conservation and management. Little penguins Eudyptula minor are native to Australia and New Zealand, and are susceptible to piroplasmids (Babesia), hemosporidians (Haemoproteus, Leucocytozoon, Plasmodium) and kinetoplastids (Trypanosoma). We studied a total of 263 wild little penguins at 20 sites along the Australian southeastern coast, in addition to 16 captive-bred little penguins. Babesia sp. was identified in seven wild little penguins, with positive individuals recorded in New South Wales, Victoria and Tasmania. True prevalence was estimated between 3.4% and 4.5%. Only round forms of the parasite were observed, and gene sequencing confirmed the identity of the parasite and demonstrated it is closely related to Babesia poelea from boobies (Sula spp.) and B. uriae from murres (Uria aalge). None of the Babesia-positive penguins presented signs of disease, confirming earlier suggestions that chronic infections by these parasites are not substantially problematic to otherwise healthy little penguins. We searched also for kinetoplastids, and despite targeted sampling of little penguins near the location where Trypanosoma eudyptulae was originally reported, this parasite was not detected.

No MeSH data available.


Related in: MedlinePlus

Geographic distribution of sampling locations, southeast Australia. Site details are given in Table 1. The geographic distribution of little penguins (black area) is shown in the top right map (adapted from Marchant and Higgins, 1990).
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f0015: Geographic distribution of sampling locations, southeast Australia. Site details are given in Table 1. The geographic distribution of little penguins (black area) is shown in the top right map (adapted from Marchant and Higgins, 1990).

Mentions: A total of 263 wild little penguins were sampled from October 2012 to March 2013 in 20 study sites in NSW, Victoria and Tasmania (Table 1, Fig. 1). An additional 16 captive-bred little penguin chicks were sampled at Taronga Zoo (Mosman, NSW). Wild penguins were captured in their burrows during the day or were manually caught while in their colonies at night, with the exception of one 2–3 week-old chick found dead at Alum Cliffs, Tasmania (site 16). Further details on sampling effort are provided in Supplementary Data S1.


Epidemiology and molecular phylogeny of Babesia sp. in Little Penguins Eudyptula minor in Australia.

Vanstreels RE, Woehler EJ, Ruoppolo V, Vertigan P, Carlile N, Priddel D, Finger A, Dann P, Herrin KV, Thompson P, Ferreira Junior FC, Braga ÉM, Hurtado R, Epiphanio S, Catão-Dias JL - Int J Parasitol Parasites Wildl (2015)

Geographic distribution of sampling locations, southeast Australia. Site details are given in Table 1. The geographic distribution of little penguins (black area) is shown in the top right map (adapted from Marchant and Higgins, 1990).
© Copyright Policy - CC BY-NC-SA
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4383760&req=5

f0015: Geographic distribution of sampling locations, southeast Australia. Site details are given in Table 1. The geographic distribution of little penguins (black area) is shown in the top right map (adapted from Marchant and Higgins, 1990).
Mentions: A total of 263 wild little penguins were sampled from October 2012 to March 2013 in 20 study sites in NSW, Victoria and Tasmania (Table 1, Fig. 1). An additional 16 captive-bred little penguin chicks were sampled at Taronga Zoo (Mosman, NSW). Wild penguins were captured in their burrows during the day or were manually caught while in their colonies at night, with the exception of one 2–3 week-old chick found dead at Alum Cliffs, Tasmania (site 16). Further details on sampling effort are provided in Supplementary Data S1.

Bottom Line: Only round forms of the parasite were observed, and gene sequencing confirmed the identity of the parasite and demonstrated it is closely related to Babesia poelea from boobies (Sula spp.) and B. uriae from murres (Uria aalge).None of the Babesia-positive penguins presented signs of disease, confirming earlier suggestions that chronic infections by these parasites are not substantially problematic to otherwise healthy little penguins.We searched also for kinetoplastids, and despite targeted sampling of little penguins near the location where Trypanosoma eudyptulae was originally reported, this parasite was not detected.

View Article: PubMed Central - PubMed

Affiliation: Laboratory of Wildlife Comparative Pathology (LAPCOM), Department of Pathology, School of Veterinary Medicine and Animal Science, University of São Paulo, Brazil.

ABSTRACT
Blood parasites are potential threats to the health of penguins and to their conservation and management. Little penguins Eudyptula minor are native to Australia and New Zealand, and are susceptible to piroplasmids (Babesia), hemosporidians (Haemoproteus, Leucocytozoon, Plasmodium) and kinetoplastids (Trypanosoma). We studied a total of 263 wild little penguins at 20 sites along the Australian southeastern coast, in addition to 16 captive-bred little penguins. Babesia sp. was identified in seven wild little penguins, with positive individuals recorded in New South Wales, Victoria and Tasmania. True prevalence was estimated between 3.4% and 4.5%. Only round forms of the parasite were observed, and gene sequencing confirmed the identity of the parasite and demonstrated it is closely related to Babesia poelea from boobies (Sula spp.) and B. uriae from murres (Uria aalge). None of the Babesia-positive penguins presented signs of disease, confirming earlier suggestions that chronic infections by these parasites are not substantially problematic to otherwise healthy little penguins. We searched also for kinetoplastids, and despite targeted sampling of little penguins near the location where Trypanosoma eudyptulae was originally reported, this parasite was not detected.

No MeSH data available.


Related in: MedlinePlus