Savage, J.L.; Crane. J.M.S.; Hemmings, N.

Kākāpō (Strigops habroptilus) egg fertility on Anchor and Whenua Hou islands, New Zealand, 2019 breeding season

This dataset contains information on the fertility and physical characteristics of kākāpō (Strigops habroptilus) eggs laid on Anchor and Whenua Hou islands, New Zealand during the 2018/19 breeding season. Of the 252 total eggs laid, 129 failed to develop; undeveloped eggs were dissected, fixed in formalin, and then inspected using fluorescence microscopy at the University of Sheffield UK. For all eggs, data are provided on mother and clutch of origin, developmental stage reached, and maternal mating behaviour. For dissected undeveloped eggs, additional data include fertilisation status, numbers of sperm visible on the perivitelline layer, egg size and weight, dry eggshell weight, and yolk and albumen weights.

Publication date: 2020-09-18

Get the data

This dataset is available under the terms of the Open Government Licence

Format of the data: Comma-separated values (CSV)

You must cite: Savage, J.L.; Crane. J.M.S.; Hemmings, N. (2020). Kākāpō (Strigops habroptilus) egg fertility on Anchor and Whenua Hou islands, New Zealand, 2019 breeding season. NERC Environmental Information Data Centre. https://doi.org/10.5285/cd0e9bc1-bd57-44ae-9fec-2f6239e8726d

 

Where/When

Study area
Temporal extent
2018-12-17    to    2019-12-15

Provenance & quality

All data were collected by the authors or by other staff within the New Zealand Department of Conservation Kākāpō Recovery Team. All data collection was carried out by trained and experienced staff following established conservation management or laboratory protocols.

All data were collected in field or lab notebooks in the first instance, then transcribed to digital spreadsheets. Measurements reported in data files were checked against original notebooks before data deposition. Original notebooks are held at the University of Sheffield, UK, and with the Kākāpō Recovery Team, NZ; the latter also maintains a comprehensive kākāpō database.

See documentation file for further methodological details and data collection roles.

Supplemental information

This dataset is a supplement to:

Savage, J.L., Crane, J.M.S., & Hemmings, N. (2020). Low hatching success in the critically endangered kākāpō (Strigops habroptilus) is driven by early embryo mortality not infertility. Cold Spring Harbor Laboratory.

Related websites:

Website of the New Zealand Department of Conservation Kākāpō Recovery Programme.

Correspondence/contact details

Dr. James Savage
University of Sheffield
 james.savage@cantab.net

Authors

Savage, J.L.
University of Sheffield
Crane. J.M.S.
Kākāpō Recovery, New Zealand Department of Conservation
Hemmings, N.
University of Sheffield

Other contacts

Custodian
NERC EDS Environmental Information Data Centre
 info@eidc.ac.uk
Publisher
NERC Environmental Information Data Centre
 info@eidc.ac.uk
Rights Holder
University of Sheffield
 copyright@sheffield.ac.uk

Additional metadata

Topic categories
Biota , Environment
Keywords
Conservation,  Eggshells,  Embryo mortality,  Environmental survey Hatching failure,  Infertility,  Kākāpō,  New Zealand,  Sperm
INSPIRE Theme
Environmental Monitoring Facilities
Spatial representation type
Tabular (text)
Spatial reference system
WGS 84
Last updated
25 June 2021 18:41