Skip to main content

Is mother condition related to offspring condition in migratory caribou (Rangifer tarandus) at calving and weaning?

Buy Article:

$50.00 plus tax (Refund Policy)

Abstract:

Maternal characteristics can affect offspring traits, yet they are seldom included when considering density dependence of juvenile traits and population dynamics. We quantified the influence of population size and maternal traits on body condition of migratory caribou (Rangifer tarandus (L., 1758)) calves at birth and weaning. We contrasted female–calf pairs of the Rivière-George (RG) herd, which has recently declined to low population size, with pairs of the much larger Rivière-aux-Feuilles (RAF) herd. Calves of the RAF herd were lighter, smaller, and leaner than calves of the RG herd at both birth and weaning. Differences between herds, however, were much greater at weaning than at calving, suggesting a combined effect of herd size and summer range conditions on calf growth. Maternal mass was positively related to calf body condition during both periods. The positive influence of maternal mass on calf body condition was greater for RAF than RG calves at birth, but it was similar for the two herds at weaning. Our results show that the negative effect of population size on calf body condition can be modulated by maternal mass at calving, and that the positive effect of maternal mass is greater at weaning.

Keywords: Rangifer tarandus; Rangifer tarandus; calving; caractéristiques maternelles; caribou migrateur; condition corporelle juvénile; juvenile body condition; maternal traits; migratory caribou; mise bas; population size; sevrage; taille de population; weaning

Document Type: Research Article

DOI: http://dx.doi.org/10.1139/z2012-001

Affiliations: 1: Département de biologie et Centre d’études nordiques, Pavillon Vachon, 1045 avenue de la Médecine, Université Laval, Québec, QC G1V 0A6, Canada. 2: Ministère des Ressources naturelles et de la Faune, Direction de l’expertise ÉFFMT du Nord-du-Québec, Nord-du-Québec, Chibougamau, QC G8P 2Z3, Canada. 3: Département de biologie et Centre d’études nordiques, Université de Sherbrooke, Sherbrooke, QC J1K 2R1, Canada. 4: Département de Biologie et Centre d’études nordiques, Université Laval, Québec, QC G1V 0A6, Canada.

Publication date: March 2, 2012

More about this publication?
  • Published since 1929, this monthly journal reports on primary research contributed by respected international scientists in the broad field of zoology, including behaviour, biochemistry and physiology, developmental biology, ecology, genetics, morphology and ultrastructure, parasitology and pathology, and systematics and evolution. It also invites experts to submit review articles on topics of current interest.
  • Information for Authors
  • Submit a Paper
  • Subscribe to this Title
  • Terms & Conditions
  • Sample Issue
  • Reprints & Permissions
  • ingentaconnect is not responsible for the content or availability of external websites
nrc/cjz/2012/00000090/00000003/art00013
dcterms_title,dcterms_description,pub_keyword
6
5
20
40
5

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more