• Causes of mortality in anuran amphibians from an ex-situ survival assurance colony in Panama

      Pessier, Allan P.; Baitchman, E.J.; Crump, P.; Wilson, B.; Griffith, E.; Ross, H. (2014)
      …This study reviewed postmortem findings in 167 frogs from 13 species that died in a large Panamanian rescue and survival assurance population between 2006 and 2011…. Applied research efforts to improve sustainability of survival assurance populations should focus on elucidating optimal husbandry practices for diverse species, improving methods for nutritional supplementation of cultured insects and examination of the role of water composition in disease development.
    • Cerebral Angiostrongylus cantonensis infection in a captive African pygmy falcon (Polihierax semitorquatus) in southern California

      Burns, Rachel E.; Bicknese, Elizabeth; Qvarnstrom, Yvonne; DeLeon-Carnes, Marlene; Drew, Clifton P.; Gardiner, Chris H.; Rideout, Bruce (2014)
      A 10-month-old, female African pygmy falcon (Polihierax semitorquatus) hatched and housed at the San Diego Zoo developed neurologic signs and died from a cerebral infection with the rat lungworm Angiostrongylus cantonensis…. To the authors’ knowledge, this infection has not previously been reported in a bird in the United States and has not been known to be naturally acquired in any species in this region of the world. The source of the infection was not definitively determined but was possibly feeder geckos (Hemidactylus frenatus) imported from Southeast Asia where the parasite is endemic.
    • Historical and geographical patterns in Knemidocoptes mite infestations in Southern California birds

      Clark, Kevin B.; Rideout, Bruce; Garrett, Kimball L.; Unitt, Philip; O’Connor, Barry (2019)
      We investigated the causes of toe and foot loss and other deformities long observed in urban Brewer’s Blackbirds (Euphagus cyanocephalus) in southern California. Histopathologic evaluation showed that afflicted individuals suffered from infestations of mites compatible with Knemidokoptes spp. (scaly-leg mites). We developed a case definition based on gross lesions in confirmed cases and the scientific literature to search two large ornithological collections for specimens exhibiting these lesions. In evaluating specimens among seven species of the family Icteridae, we found 34 specimens in the two collections with lesions consistent with Knemidokoptes spp. Species afflicted included the Red-winged Blackbird (Agelaius phoeniceus; 12 of 978 specimens), Brewer’s Blackbird (10/337 specimens), Tricolored Blackbird (A. tricolor; 4/101 specimens), Brown-headed Cowbird (Molothrus ater; 4/828 specimens), and Great-tailed Grackle (Quiscalus mexicanus; 4/224 specimens). The earliest cluster of California specimens dated to 1962. Fourteen of the 34 specimens exhibiting the condition were collected since 1999. No specimens of the Yellow-headed Blackbird (Xanthocephalus xanthocephalus; 0 of 214 specimens) or Western Meadowlark (Sturnella neglecta; 0/278) were found with the condition.
    • Intestinal helminths in wild Peruvian red uakari monkeys (Cacajao calvus ucayalii) in the northeastern Peruvian Amazon

      Conga, David F.; Bowler, Mark; Tantalean, Manuel; Montes, Daniel; Serra-Freire, Nicolau Maués; Mayor, Pedro (2014)
      …We examined 36 fecal samples from Peruvian red uakari monkeys (Cacajao calvus ucayalii ) collected from wild animals in the northeastern Peruvian Amazon. Samples were positive for helminth infection. Nematodes egg: Strongyloididae, Trypanoxyuris sp., Spirurid, and a cestode egg were identified.
    • Molecular epidemiology of Trypanosomatids and Trypanosoma cruzi in primates from Peru

      Aysanoa, Esar; Mayor, Pedro; Mendoza, A. Patricia; Zariquiey, Carlos M.; Morales, E. Angelo; Pérez, Jocelyn G.; Bowler, Mark; Ventocilla, Julio A.; González, Carlos; Baldeviano, G. Christian; et al. (2017)
      We determined the prevalence rate and risk of infection of Trypanosoma cruzi and other trypanosomatids in Peruvian non-human primates (NHPs) in the wild (n = 126) and in different captive conditions (n = 183). Blood samples were collected on filter paper, FTA cards, or EDTA tubes and tested using a nested PCR protocol targeting the 24S? rRNA gene....
    • Strongylid infection varies with age, sex, movement and social factors in wild African elephants

      Parker, Jenna M.; Goldenberg, Shifra Z.; Letitiya, David; Wittemyer, George (2019)
      Comparing parasitic infection among individuals of wildlife populations can provide insight into factors that influence wildlife disease ecology. Strongylids are parasitic worms that infect the intestinal tract of vertebrates, and infection with strongylids can be approximated by counting strongylid eggs in dung samples....
    • Which parasites should we be most concerned about in wildlife translocations?

      Rideout, Bruce; Sainsbury, Anthony W.; Hudson, Peter J. (2017)