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Browsing Research Articles (Mammal Research Institute) by UP Author

Browsing Research Articles (Mammal Research Institute) by UP Author "Lubcker, Nico"

Now showing items 1-5 of 5

Antarctic pack ice seal observations during spring across the Lazarev Sea

Bester, Marthan Nieuwoudt; Lubcker, Nico; Haddad, Wiam; Bornemann, Horst; Wege, Mia (Cambridge University Press, 2021)

The distribution, density and percentage contribution of pack ice seals during ship-board censuses in the marginal sea ice zone beyond the Lazarev Sea in spring 2019 are presented. Adult/juvenile crabeater seals (n = 19), ...
Can the carbon and nitrogen isotope values of offspring be used as a proxy for their mother’s diet? Using foetal physiology to interpret bulk tissue and amino acid δ15N values

Lubcker, Nico; Whiteman, John P.; Newsome, Seth D.; Millar, Robert P.; De Bruyn, P.J. Nico (Oxford University Press, 2020-07)

Please read abstract in the article.
Fasting affects amino acid nitrogen isotope values: a new tool for identifying nitrogen balance of free-ranging mammals

Lubcker, Nico; Whiteman, John P.; Millar, Robert P.; De Bruyn, P.J. Nico; Newsome, Seth D. (Springer, 2020-05)

Changes in the nutritional status of free-ranging animals have a strong influence on individual fitness, yet it remains challenging to monitor longitudinally. Nitrogen (δ15N) and carbon (δ13C) isotope values measured ...
Opportunistic ship-based census of pack ice seals in eastern Weddell Sea, Antarctica

Bester, Marthan Nieuwoudt; Wege, Mia; Lubcker, Nico; Postma, Martin; Syndercombe, Gavin (Springer, 2019-01)

The distribution, density and percentage contribution of pack ice pinnipeds during ship-board censuses in the eastern Weddell Sea in summer 2015/2016 are presented. Of the four true pack ice seal species encountered, ...
What’s in a whisker? High-throughput analysis of twenty-eight C19 and C21 steroids in mammalian whiskers by ultra-performance convergence chromatography-tandem mass spectrometry

Lubcker, Nico; Bloem, Liezl M.; Du Toit, Therina; Swart, Pieter; De Bruyn, P.J. Nico; Swart, Amanda C.; Millar, Robert P. (Elsevier, 2020-02)

Obtaining longitudinal endocrinological data from free-ranging animals remains challenging. Steroid hormones can be extracted sequentially from non-invasively sampled biologically inert keratinous tissues, such as feathers, ...

Now showing items 1-5 of 5

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Browsing Research Articles (Mammal Research Institute) by UP Author "Lubcker, Nico"

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