Thelebolus microsporus Mycelial Mats in the Trachea of Wild Brown Skua (Catharacta antarctica lonnbergi) and South Polar Skua (C. maccormicki) Carcasses

Leotta, Gerardo Aníbal; Paré, Jean A.; Sigler, Lynne; Montalti, Diego; Vigo, Germán Blas; Petruccelli, Miguel Ángel; Reinoso, Enso Hugo

doi:10.7589/0090-3558-38.2.443

Cited by 19 publications

(16 citation statements)

References 6 publications

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“…The distribution of fungi in Antarctica is related to the distribution of different substrata such as soils, rocks, bird feathers and dung, vegetation, which consists of plants (largely limited to maritime Antarctica), bryophytes, and lichens (Bridge and Worland 2004;Jumpponen et al 2003;Leotta et al 2002;Tosi et al 2002), and to the distribution of scientific research stations, mainly scattered along the coast of the continent, whose environs have been most extensively investigated. There is a long list of fungal species, including yeasts, colonizing nearly all terrestrial environments occurring in Antarctica (Onofri 1999;Onofri et al 2006).…”

Section: Antarctic Fungimentioning

confidence: 99%

Fungi in Antarctica

Ruisi

Barreca

Selbmann

et al. 2006

Rev Environ Sci Biotechnol

194

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Section: Antarctic Fungimentioning

confidence: 99%

Fungi in Antarctica

Ruisi

Barreca

Selbmann

et al. 2006

Rev Environ Sci Biotechnol

194

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“…Samples from intestine, lung, and trachea were stored at 220 C for isolation and identification of Campylobacter spp. (Lior, 1984;Giacoboni et al, 1993) and Mycoplasma spp., as well as for detection of Chlamydophila psittaci (Leotta et al, 2003).…”

Section: Microbiological Studiesmentioning

confidence: 99%

Outbreaks of Avian Cholera in Hope Bay, Antarctica

Leotta

Chinen

Vigo

et al. 2006

Journal of Wildlife Diseases

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During austral summers 1999-2000 and 2000-01, two outbreaks of avian cholera occurred in the Hope Bay area (63 degrees 24'S, 56 degrees 59'W), located on the tip of the Antarctic Peninsula. Eighty-six dead birds were found: five kelp gulls (Larus dominicanus), 36 skuas (Stercorarius sp.), and 45 Adelie penguins (Pygoscelis adeliae). The carcasses were studied using clinical, pathological, and microbiological criteria. Water samples from ponds where birds were settled and samples from 90 healthy birds also were analyzed during the second outbreak. Pasteurella multocida isolates were identified by biochemical tests, capsular type, somatic serotype, and susceptibility to nine antibiotics. Molecular subtyping was performed by ApaI and SmaI pulsed-field gel electrophoresis (PFGE) and enterobacterial repetitive intergenic consensus (ERIC-PCR). In February 2000, mortality in skuas was 16% and 2% in kelp gulls. In the 2000-01 breeding season, mortality in south polar skuas was 47%, 24% in brown skuas, 1.4% in kelp gulls, and 0.01% in Adelie penguins. All birds had lesions of avian cholera. In kelp gulls the presentation was chronic, whereas skuas and penguins suffered subacute and acute disease, respectively. Fifty-five isolates recovered from dead birds and one from water were identified as P. multocida gallicida, type A:1. The strains presented a unique molecular pattern by PFGE and ERIC-PCR. A possible hypothesis to explain the origin of the outbreaks was that nonbreeder kelp gulls carried P. multocida gallicida to Hope Bay, and avian cholera was transmitted through water to skuas and penguins. This study reports avian cholera in new bird species, their potential role in the transmission of the disease, and the different responses of these species to the disease.

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“…They have a rapid, sustained and powerful flight, enabling them to overtake many other birds (Tamburrini et al 2000). They are effective predators, feeding on fish, crustaceans, and penguin eggs and chicks, but they also scavenge carcasses and feed at sewage outlets (Leotta et al 2002). The electrophoretic Hb pattern of two bands was one major slow and one minor fast moving, each component showing functional and structural differences, as described by Tamburrini and co-workers (2000).…”

Section: Discussionmentioning

confidence: 92%

“…This species inhabits Antarctica and does a seasonal migration to South America and even to the north of the Equator in the winter and comes back in the spring (Leotta et al 2002), thus proving to be extremely resistant during the migration and to live in completely adverse conditions. All Antarctic birds, including the skua, are mostly well adapted to water and to extreme cold, possessing a body morphology particularly suited to a cold medium (Tamburrini et al 1999;Jones et al 2002).…”

Section: Introductionmentioning

confidence: 99%