• Comparison of beak and feather disease virus prevalence and immunity-associated genetic diversity over time in an island population of red-crowned parakeets

      Knafler, Gabrielle J.; Ortiz-Catedral, Luis; Jackson, Bethany; Varsani, Arvind; Grueber, Catherine E.; Robertson, Bruce C.; Jamieson, Ian G. (2016)
      …Beak and feather disease virus (BFDV) was detected for the first time in an island population of red-crowned parakeets (Cyanoramphus novaezelandiae) in 2008 on Little Barrier Island (Hauturu-o-Toi) of New Zealand. By 2013, the prevalence of the viral infection had significantly decreased within the population….
    • Mark-recapture accurately estimates census for Tuatara, a burrowing reptile

      Moore, J.A.; Grant, Tandora D.; Brown, D.; Keall, S.N.; Nelson, N.J.; (2010)
      Estimates of population size are necessary for effective management of threatened and endangered species, but accurate estimation is often difficult when species are cryptic. We evaluated effectiveness of mark–recapture techniques using the Lincoln–Peterson estimator for predicting true census size of a population of tuatara (Sphenodon punctatus), a burrowing reptile that is a conservation priority in New Zealand....
    • Reciprocal translocation of small numbers of inbred individuals rescues immunogenetic diversity

      Grueber, Catherine E.; Sutton Jolene T.; Heber Sol; Briskie James V.; Jamieson, Ian G.; Robertson Bruce C. (2017)
      Genetic rescue can reduce inbreeding depression and increase fitness of small populations, even when the donor populations are highly inbred. In a recent experiment involving two inbred island populations of the New Zealand South Island robin, Petroica australis, reciprocal translocations improved microsatellite diversity and individual fitness....
    • Selection on MHC class II supertypes in the New Zealand endemic Hochstetter’s frog

      Lillie, Mette; Grueber, Catherine E.; Sutton, Jolene T.; Howitt, Robyn; Bishop, Phillip J.; Gleeson, Dianne; Belov, Katherine (2015)
      The New Zealand native frogs, family Leiopelmatidae, are among the most archaic in the world. Leiopelma hochstetteri (Hochstetter’s frog) is a small, semi-aquatic frog with numerous, fragmented populations scattered across New Zealand’s North Island. We characterized a major histocompatibility complex (MHC) class II B gene (DAB) in L. hochstetteri from a spleen transcriptome, and then compared its diversity to neutral microsatellite markers to assess the adaptive genetic diversity of five populations (“evolutionarily significant units”, ESUs).
    • Unexpected positive and negative effects of continuing inbreeding in one of the world's most inbred wild animals

      Weiser Emily L.; Grueber, Catherine E.; Kennedy, Euan S.; Jamieson, Ian G. (2015)
      ...The Chatham Island black robin represents a case of extreme inbreeding following two severe population bottlenecks…. The positive and negative effects we found emphasize that continuing inbreeding can have important effects on individual fitness, even in populations that are already highly inbred....