Pup Vibrissae Stable Isotopes Reveal Geographic Differences in Adult Female Southern Sea Lion Habitat Use during Gestation

Baylis AMM, Kowalski GJ, Voigt CC, Orben RA, Trillmich F, Staniland IJ, Hoffman J (2016)
PLOS ONE 11(6): e0157394.

Download
OA 1.03 MB
Zeitschriftenaufsatz | Veröffentlicht | Englisch
Volltext vorhanden für diesen Nachweis
Autor
; ; ; ; ; ;
Abstract / Bemerkung
Individuals within populations often differ substantially in habitat use, the ecological consequences of which can be far reaching. Stable isotope analysis provides a convenient and often cost effective means of indirectly assessing the habitat use of individuals that can yield valuable insights into the spatiotemporal distribution of foraging specialisations within a population. Here we use the stable isotope ratios of southern sea lion (Otaria flavescens) pup vibrissae at the Falkland Islands, in the South Atlantic, as a proxy for adult female habitat use during gestation. A previous study found that adult females from one breeding colony (Big Shag Island) foraged in two discrete habitats, inshore (coastal) or offshore (outer Patagonian Shelf). However, as this species breeds at over 70 sites around the Falkland Islands, it is unclear if this pattern is representative of the Falkland Islands as a whole. In order to characterize habitat use, we therefore assayed carbon (delta C-13) and nitrogen (delta N-15) ratios from 65 southern sea lion pup vibrissae, sampled across 19 breeding colonies at the Falkland Islands. Model-based clustering of pup isotope ratios identified three distinct clusters, representing adult females that foraged inshore, offshore, and a cluster best described as intermediate. A significant difference was found in the use of inshore and offshore habitats between West and East Falkland and between the two colonies with the largest sample sizes, both of which are located in East Falkland. However, habitat use was unrelated to the proximity of breeding colonies to the Patagonian Shelf, a region associated with enhanced biological productivity. Our study thus points towards other factors, such as local oceanography and its influence on resource distribution, playing a prominent role in inshore and offshore habitat use.
Erscheinungsjahr
Zeitschriftentitel
PLOS ONE
Band
11
Ausgabe
6
Art.-Nr.
e0157394
ISSN
Finanzierungs-Informationen
Article Processing Charge funded by the Deutsche Forschungsgemeinschaft and the Open Access Publication Fund of Bielefeld University.
PUB-ID

Zitieren

Baylis AMM, Kowalski GJ, Voigt CC, et al. Pup Vibrissae Stable Isotopes Reveal Geographic Differences in Adult Female Southern Sea Lion Habitat Use during Gestation. PLOS ONE. 2016;11(6): e0157394.
Baylis, A. M. M., Kowalski, G. J., Voigt, C. C., Orben, R. A., Trillmich, F., Staniland, I. J., & Hoffman, J. (2016). Pup Vibrissae Stable Isotopes Reveal Geographic Differences in Adult Female Southern Sea Lion Habitat Use during Gestation. PLOS ONE, 11(6), e0157394. doi:10.1371/journal.pone.0157394
Baylis, A. M. M., Kowalski, G. J., Voigt, C. C., Orben, R. A., Trillmich, F., Staniland, I. J., and Hoffman, J. (2016). Pup Vibrissae Stable Isotopes Reveal Geographic Differences in Adult Female Southern Sea Lion Habitat Use during Gestation. PLOS ONE 11:e0157394.
Baylis, A.M.M., et al., 2016. Pup Vibrissae Stable Isotopes Reveal Geographic Differences in Adult Female Southern Sea Lion Habitat Use during Gestation. PLOS ONE, 11(6): e0157394.
A.M.M. Baylis, et al., “Pup Vibrissae Stable Isotopes Reveal Geographic Differences in Adult Female Southern Sea Lion Habitat Use during Gestation”, PLOS ONE, vol. 11, 2016, : e0157394.
Baylis, A.M.M., Kowalski, G.J., Voigt, C.C., Orben, R.A., Trillmich, F., Staniland, I.J., Hoffman, J.: Pup Vibrissae Stable Isotopes Reveal Geographic Differences in Adult Female Southern Sea Lion Habitat Use during Gestation. PLOS ONE. 11, : e0157394 (2016).
Baylis, Alastair M. M., Kowalski, Gabriele J., Voigt, Christian C., Orben, Rachael A., Trillmich, Fritz, Staniland, Iain J., and Hoffman, Joseph. “Pup Vibrissae Stable Isotopes Reveal Geographic Differences in Adult Female Southern Sea Lion Habitat Use during Gestation”. PLOS ONE 11.6 (2016): e0157394.
Alle Dateien verfügbar unter der/den folgenden Lizenz(en):
Creative Commons Namensnennung 4.0 International Public License (CC-BY 4.0):
Volltext(e)
Access Level
OA Open Access
Zuletzt Hochgeladen
2016-08-05T07:04:41Z

34 References

Daten bereitgestellt von Europe PubMed Central.

Predicted habitat shifts of Pacific top predators in a changing climate
AUTHOR UNKNOWN, 2012
The ecology of individuals: incidence and implications of individual specialization.
Bolnick DI, Svanback R, Fordyce JA, Yang LH, Davis JM, Hulsey CD, Forister ML., Am. Nat. 161(1), 2002
PMID: 12650459
Taking the sting out of darting: Risks, restraint drugs and procedures for the chemical restraint of Southern Hemisphere otariids
AUTHOR UNKNOWN, 2015
Space partitioning without territoriality in gannets.
Wakefield ED, Bodey TW, Bearhop S, Blackburn J, Colhoun K, Davies R, Dwyer RG, Green JA, Gremillet D, Jackson AL, Jessopp MJ, Kane A, Langston RH, Lescroel A, Murray S, Le Nuz M, Patrick SC, Peron C, Soanes LM, Wanless S, Votier SC, Hamer KC., Science 341(6141), 2013
PMID: 23744776
Colony-specific foraging areas of lactating New Zealand fur seals
AUTHOR UNKNOWN, 2008
Separation of foraging habitat among breeding sites of a colonial marine predator, the northern fur seal (Callorhinus ursinus)
AUTHOR UNKNOWN, 2004
Winter foraging site fidelity of king penguins breeding at the Falkland Islands
AUTHOR UNKNOWN, 2015
Differences in foraging ecology align with genetically divergent ecotypes of a highly mobile marine top predator
AUTHOR UNKNOWN, 2015
Stable isotope values in pup vibrissae reveal geographic variation in diets of gestating Steller sea lions Eumetopias jubatus
AUTHOR UNKNOWN, 2015
From birds to butterflies: animal movement patterns and stable isotopes.
Rubenstein DR, Hobson KA., Trends Ecol. Evol. (Amst.) 19(5), 2004
PMID: 16701265
Using stable isotope biogeochemistry to study marine mammal ecology
AUTHOR UNKNOWN, 2010
From video recordings to whisker stable isotopes: a critical evaluation of timescale in assessing individual foraging specialisation in Australian fur seals.
Kernaleguen L, Dorville N, Ierodiaconou D, Hoskins AJ, Baylis AM, Hindell MA, Semmens J, Abernathy K, Marshall GJ, Cherel Y, Arnould JP., Oecologia 180(3), 2015
PMID: 26233674
Using stable-isotope analysis of feathers to distinguish moulting and breeding origins of seabirds
AUTHOR UNKNOWN, 2000
Disentangling the cause of a catastrophic population decline in a large marine mammal.
Baylis AM, Orben RA, Arnould JP, Christiansen F, Hays GC, Staniland IJ., Ecology 96(10), 2015
PMID: 26649403
Diving deeper into individual foraging specializations of a large marine predator, the southern sea lion.
Baylis AM, Orben RA, Arnould JP, Peters K, Knox T, Costa DP, Staniland IJ., Oecologia 179(4), 2015
PMID: 26323982
Detecting alternate foraging ecotypes in Australian sea lion (Neophoca cinerea) colonies using stable isotope analysis
AUTHOR UNKNOWN, 2011
Diet of lactating South American sea lions, as inferred from stable isotopes, influences pup growth
AUTHOR UNKNOWN, 2010
Age-specific vibrissae growth rates: A tool for determining the timing of ecologically important events in Steller sea lions
AUTHOR UNKNOWN, 2015

AUTHOR UNKNOWN, 0

AUTHOR UNKNOWN, 2013
Change in the foraging strategy of female South American sea lions (Carnivora: Pinnipedia) after parturition
AUTHOR UNKNOWN, 2010

AUTHOR UNKNOWN, 1986
Intraspecific competition drives increased resource use diversity within a natural population
AUTHOR UNKNOWN, 2007
Food limitation leads to behavioral diversification and dietary specialization in sea otters.
Tinker MT, Bentall G, Estes JA., Proc. Natl. Acad. Sci. U.S.A. 105(2), 2008
PMID: 18195370
Age, body mass and environmental variation shape the foraging ontogeny of Galapagos sea lions
AUTHOR UNKNOWN, 2012
Multiple foraging strategies in a marine apex predator, the Galapagos sea lion Zalophus wollebaeki
AUTHOR UNKNOWN, 2008
Individual variation in prey selection by sea otters: patterns, causes and implications
AUTHOR UNKNOWN, 2003
Marine fronts at the continental shelves of austral South America
AUTHOR UNKNOWN, 2004
Foraging behaviour and diet of lactating female southern sea lions (Otaria flavescens) in the Falkland Islands
AUTHOR UNKNOWN, 1998
Links between marine fauna and oceanic fronts on the Patagonian Shelf and Slope
AUTHOR UNKNOWN, 2013
The use of island water dynamics by spawning red cod, Salilota australis (Pisces: Moridae) on the Patagonian Shelf (Southwest Atlantic)
AUTHOR UNKNOWN, 2010
Dining hall at sea: feeding migrations of nektonic predators to the eastern Patagonian Shelf.
Arkhipkin A, Brickle P, Laptikhovsky V, Winter A., J. Fish Biol. 81(2), 2012
PMID: 22803740
The Regulation of Numbers of Tropical Oceanic Birds
AUTHOR UNKNOWN, 1963

Export

Markieren/ Markierung löschen
Markierte Publikationen

Open Data PUB

Web of Science

Dieser Datensatz im Web of Science®

Quellen

PMID: 27304855
PubMed | Europe PMC

Suchen in

Google Scholar