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Surveillance for Toxoplasma gondii, Brucella spp., and Chlamydia spp. in Australian Fur Seal (Arctocephalus pusillus doriferus) Abortions.
Gardner, Brett R; Stent, Andrew; Bushell, Rhys; Arnould, John P Y; McIntosh, Rebecca; Liyanage, K L D Tharaka D; Fromant, Aymeric; Botha, Jonathan; Eizenberg, Yonina H; Olaogun, O Martins; Marenda, Marc; Lynch, Michael; Hufschmid, Jasmin.
Afiliación
  • Gardner BR; Melbourne Veterinary School, One Health Research Group, The University of Melbourne, Werribee Victoria 3030, Australia.
  • Stent A; Zoos Victoria, Parkville, Victoria 3052, Australia.
  • Bushell R; Melbourne Veterinary School, One Health Research Group, The University of Melbourne, Werribee Victoria 3030, Australia.
  • Arnould JPY; Melbourne Veterinary School, One Health Research Group, The University of Melbourne, Werribee Victoria 3030, Australia.
  • McIntosh R; School of Life and Environmental Sciences, Deakin University, Burwood, Victoria 3125, Australia.
  • Liyanage KLDTD; Conservation Department, Philip Island Nature Parks, Cowes, Victoria 3922, Australia.
  • Fromant A; Melbourne Veterinary School, One Health Research Group, The University of Melbourne, Werribee Victoria 3030, Australia.
  • Botha J; Centre d'Etudes Biologiques de Chizé (CEBC), UMR 7372 CNRS-La Rochelle Université, 79360 Villiers-en-Bois, France.
  • Eizenberg YH; Biosis Pty Ltd, 38 Bertie Street, Port Melbourne, Melbourne, Victoria 3207, Australia.
  • Olaogun OM; School of Life and Environmental Sciences, Deakin University, Burwood, Victoria 3125, Australia.
  • Marenda M; Centre d'Etudes Biologiques de Chizé (CEBC), UMR 7372 CNRS-La Rochelle Université, 79360 Villiers-en-Bois, France.
  • Lynch M; AsureQuality Diagnostics, 28 Mareno Road, Tullamarine, Victoria 3043, Australia.
  • Hufschmid J; Melbourne Veterinary School, One Health Research Group, The University of Melbourne, Werribee Victoria 3030, Australia.
J Wildl Dis ; 60(4): 860-873, 2024 10 01.
Article en En | MEDLINE | ID: mdl-39141888
ABSTRACT
The intracellular pathogens Toxoplasma gondii, Brucella spp., and Chlamydia spp. are all known causative agents of abortion in wildlife. Both T. gondii and Brucella spp. have been identified in marine mammal abortions and a limited number of studies have detected their potential presence in Australian fur seals (Arctocephalus pusillus doriferus), but data are sparse for these pathogens in Australian fur seal breeding colonies. Australian fur seals have been shown to have a high degree of third-trimester pregnancy loss in one of their largest breeding colonies. Additionally, pup production has declined at the largest breeding colony for the species. This study surveyed the presence of T. gondii, Brucella spp., and Chlamydia spp. as potential infectious causes of this reproductive loss. Aborted fetuses were collected from two of the largest breeding colonies for the species, Seal Rocks (n=19) and Kanowna Island (n=34). These were examined grossly and through histopathological evaluation, in conjunction with molecular testing for all three pathogens. Placentas were collected from full-term births during the pupping season from Kanowna Island (n=118). These were used to compare the molecular prevalence of the three pathogens in presumed successful pregnancies. Chlamydia spp. was not detected in aborted fetuses in this study. Brucella spp. was detected with PCR in both aborted fetuses (9.4%) and placentas from full-term births (3.4%), and T. gondii was detected using routine histopathology (n=2/53), immunohistochemistry (n=3/4), and PCR (n=4/53) in tissues from aborted fetuses. Toxoplasma gondii was present in 7.5% of third-trimester abortions and absent from all full-term placentas. Brucella spp. was detected in both aborted fetuses and full-term placentas. This is the first description of vertical transmission of T. gondii in a marine mammal from the southern hemisphere.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Toxoplasma / Brucella / Brucelosis / Infecciones por Chlamydia / Chlamydia / Toxoplasmosis Animal / Aborto Veterinario / Lobos Marinos Límite: Animals / Pregnancy País/Región como asunto: Oceania Idioma: En Revista: J Wildl Dis Año: 2024 Tipo del documento: Article País de afiliación: Australia Pais de publicación: Estados Unidos
Texto completo
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XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Toxoplasma / Brucella / Brucelosis / Infecciones por Chlamydia / Chlamydia / Toxoplasmosis Animal / Aborto Veterinario / Lobos Marinos Límite: Animals / Pregnancy País/Región como asunto: Oceania Idioma: En Revista: J Wildl Dis Año: 2024 Tipo del documento: Article País de afiliación: Australia Pais de publicación: Estados Unidos