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Latest News

  • Genetic variance in fitness indicates rapid contemporary adaptive evolution in wild animals
  • Hihi are featured in this new Stuff documentary – give it a watch!
  • Incorporating individual variation in survival, reproduction and detection rates when projecting dynamics of small populations
  • Genomic data of different resolutions reveal consistent inbreeding estimates but contrasting homozygosity landscapes for the threatened Aotearoa New Zealand hihi
  • The design and application of a 50 K SNP chip for a threatened Aotearoa New Zealand passerine, the hihi
  • Testing management alternatives for controlling nest parasites in an endangered bird

Latest News

  • Genetic variance in fitness indicates rapid contemporary adaptive evolution in wild animals
  • Hihi are featured in this new Stuff documentary – give it a watch!
  • Incorporating individual variation in survival, reproduction and detection rates when projecting dynamics of small populations
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    • Research Publication

    Genetic variance in fitness indicates rapid contemporary adaptive evolution in wild animals

    by Dr John Ewen May 28, 2022, 1:25 AM 0 Comments

    Published in: Science Authors: Bonnet et al (there are 40!) Abstract: The rate of adaptive evolution, the contribution of selection to genetic changes that increase mean fitness, is determined by the additive genetic variance in individual relative fitness. To date, there are few robust estimates of this parameter for natural populations, and it is therefore […]

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    Tagged with: Alexis Rutschmann, Anna Santure, John Ewen, Patricia Brekke, Pierre de Villemereuil, Tiritiri Matangi, Zealandia

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    • Media

    Hihi are featured in this new Stuff documentary - give it a watch!

    by Dr John Ewen November 13, 2021, 4:28 AM 0 Comments

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    Tagged with: Mhairi McCready

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    • Research Publication

    Incorporating individual variation in survival, reproduction and detection rates when projecting dynamics of small populations

    by Dr John Ewen November 13, 2021, 3:59 AM 0 Comments

    Published in: Ecological Modelling Authors: Doug P. Armstrong, Elizabeth, H. Parlato & Peter G.H. Frost Abstract: Survival, reproduction and detection rates may vary greatly amongst individuals. Failure to account for this variation results in biased inferences about age effects and population size. However, individual variation is not normally considered in population viability analysis, potentially leading […]

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    Tagged with: Bushy Park, Doug Armstrong, Elizabeth Parlato, Peter Frost

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    Posted in:

    • Research Publication

    Genomic data of different resolutions reveal consistent inbreeding estimates but contrasting homozygosity landscapes for the threatened Aotearoa New Zealand hihi

    by Dr John Ewen November 13, 2021, 3:44 AM 0 Comments

    Published in: Molecular Ecology Authors: Laura Duntsch, Annabel Whibley, Patricia Brekke, John G. Ewen & Anna W. Santure Abstract: Inbreeding can lead to a loss of heterozygosity in a population and when combined with genetic drift may reduce the adaptive potential of a species. However, there is uncertainty about whether resequencing data can provide accurate […]

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    Tagged with: Anna Santure, John Ewen, Laura Duntsch, Patricia Brekke

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    Posted in:

    • Research Publication

    The design and application of a 50 K SNP chip for a threatened Aotearoa New Zealand passerine, the hihi

    by Dr John Ewen November 13, 2021, 3:36 AM 0 Comments

    Published in: Molecular Ecology Resources Authors: Kate D. Lee, Craig D. Miller, Patricia Brekke, Annabel Whibley, John G. Ewen, Melanie Hingston, Amy Zhu, Anna W. Santure Abstract: Next-generation sequencing has transformed the fields of ecological and evolutionary genetics by allowing for cost-effective identification of genome-wide variation. Single nucleotide polymorphism (SNP) arrays, or “SNP chips”, enable very […]

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    Tagged with: Anna Santure, John Ewen, Kate Lee, Patricia Brekke

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    • Research Publication

    Testing management alternatives for controlling nest parasites in an endangered bird

    by Dr John Ewen November 13, 2021, 3:27 AM 0 Comments

    Published in: Animal Conservation Authors: Mather, E., Fogell, D.J., McCready, M., McInnes, K. & Ewen, J.G. Abstract: Haematophagous parasites can negatively impact breeding success and their control is often the target of management for threatened bird species. Mitigating parasitism can be difficult and certainly should only be done if parasite control is possible and if […]

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    Tagged with: John Ewen, Kate McInnes, Mhairi McCready, Tiritiri Matangi

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    • Media

    Tūhuratia te taiao – Take a moment to discover nature: 2nd Hihi Conservation Science Full Event Recording

    by Dr John Ewen September 11, 2021, 10:45 PM 0 Comments

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    • Media

    Plotting a new history for the hihi

    by Dr John Ewen July 15, 2021, 4:20 AM 0 Comments

    The hihi, it turns out, is a bit of a character. Once found all over the North Island, deforestation, disease, and the introduction of predators led to its eventual exclusion to Te Hauturu-o-toi/ Little Barrier Island. There are now seven wild populations of hihi across New Zealand, with estimates of upwards of 2000 across the […]

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    Tagged with: Zealandia

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    • Media

    Whanganui's Bushy Park Tarapuruhi sanctuary has good hihi breeding season

    by Dr John Ewen July 15, 2021, 4:12 AM 0 Comments

    The number of female hihi at Whanganui’s Bushy Park Tarapuruhi sanctuary has doubled after a better breeding season. Hihi, or stitchbirds, were once common but are now one of New Zealand’s most endangered birds. Read the full story from the New Zealand Herald here

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    Tagged with: Bushy Park

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    • Research Publication

    Incorporating data-based estimates of temporal variation into projections for newly monitored populations

    by Dr John Ewen July 15, 2021, 3:51 AM 0 Comments

    Published in: Animal Conservation Authors: Elizabeth H. Parlato, John G. Ewen, Mhairi McCready, Fiona Gordon, Kevin A. Parker & Doug P. Armstrong Abstract: The importance of accounting for temporal variation in vital rates when modelling population dynamics is well recognized. However, long-term (usually >5 years) datasets are needed to estimate this variation. Consequently, models for newly […]

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    Tagged with: Doug Armstrong, Elizabeth Parlato, Fiona Gordon, John Ewen, Kevin Parker, Mhairi McCready, Rotokare

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Latest News

  • Posted in:

    • Research Publication

    Genetic variance in fitness indicates rapid contemporary adaptive evolution in wild animals

    by Dr John Ewen May 28, 2022 0 Comments

    Published in: Science Authors: Bonnet et al (there are 40!) Abstract: The rate of adaptive evolution, the contribution of selection to genetic changes that increase mean fitness, is determined by the additive genetic variance in individual relative fitness. To date, there are few robust estimates of this parameter for natural populations, and it is therefore […]

    Read more

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hihimhairi

First hihi chick of the season banded today! #hihi First hihi chick of the season banded today!
#hihi #banding #trafficlights #tiritirimatangi
Bushy Park Tarapuruhi may be our smallest hihi sit Bushy Park Tarapuruhi may be our smallest hihi site but it makes up for it with pretty huge trees and a big house! @forestandbird #hihi #rata #homestead
See you next time Taranaki, thanks for watching ov See you next time Taranaki, thanks for watching over the #hihi
These three got their bling today! It’s so excit These three got their bling today! It’s so exciting to find lots of hihi fledged from natural nests, especially when they’re female. #hihi #conservation #itsworking
Cool new hihi observation seat near one of the fee Cool new hihi observation seat near one of the feeders. Can you spot the hihi though? #hihi #birdwatching
Next up on the hihi pre-breeding road trip - Rotok Next up on the hihi pre-breeding road trip - Rotokare #awesomeviews #lotsofmud #lotsofhihi
Took 3 attempts to catch this guy #cheeky #hihi Took 3 attempts to catch this guy #cheeky #hihi
A day in Albert’s Gully means #wetfeet #ongaonga A day in Albert’s Gully means #wetfeet #ongaonga & #hihi
So great to be back doing fieldwork after #lockdow So great to be back doing fieldwork after #lockdown first stop @sanctuary_mountain
Coming up on Thursday for #conservationweek @docgo Coming up on Thursday for #conservationweek @docgovtnz register here: https://tinyurl.com/9h8m3n7d
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