Rutting behaviour in a barren-ground caribou population

Lent, Peter C.

doi:10.1016/0003-3472(65)90044-8

Cited by 56 publications

(35 citation statements)

References 3 publications

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“…Here, we further showed that HSMs during the rut were the best Table 2. correlates of genetic distance, probably because the composition of groups is changing more at that time than during other periods [53,54], and males move between female groups to find mates and sire offspring [55]. Excursions by migratory individuals into the ranges of sedentary and mountain caribou during the rut have also been revealed by radio-telemetry [18], suggesting possibilities of gene flow between ecotypes.…”

Section: Discussionmentioning

confidence: 99%

Temporally dynamic habitat suitability predicts genetic relatedness among caribou

et al. 2014

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Landscape heterogeneity plays a central role in shaping ecological and evolutionary processes. While species utilization of the landscape is usually viewed as constant within a year, the spatial distribution of individuals is likely to vary in time in relation to particular seasonal needs. Understanding temporal variation in landscape use and genetic connectivity has direct conservation implications. Here, we modelled the daily use of the landscape by caribou in Quebec and Labrador, Canada and tested its ability to explain the genetic relatedness among individuals. We assessed habitat selection using locations of collared individuals in migratory herds and static occurrences from sedentary groups. Connectivity models based on habitat use outperformed a baseline isolation-by-distance model in explaining genetic relatedness, suggesting that variations in landscape features such as snow, vegetation productivity and land use modulate connectivity among populations. Connectivity surfaces derived from habitat use were the best predictors of genetic relatedness. The relationship between connectivity surface and genetic relatedness varied in time and peaked during the rutting period. Landscape permeability in the period of mate searching is especially important to allow gene flow among populations. Our study highlights the importance of considering temporal variations in habitat selection for optimizing connectivity across heterogeneous landscape and counter habitat fragmentation.

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Section: Discussionmentioning

confidence: 99%

Temporally dynamic habitat suitability predicts genetic relatedness among caribou

et al. 2014

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“…However, puberty occurs at 17-18 months of age in barren-ground caribou (McEwan, 1963) and wild reindeer (Sokolov, 1959, quoted by McEwan, 1963. McEwan (1963) (Espmark, 1964;Lent, 1965;Bergerud, 1973). Thus if the definition of puberty had included the development of all secondary sexual characters and reproductive behaviour, reindeer could not be said to complete puberty in their first year.…”

Section: Testis and Epididymismentioning

confidence: 99%

“…The indirect reproductive consequence of physiological puberty in calves may be to ensure the testis is fuUy functional in yearlings. In adapting to high latitudes the species has a short and intense rut, which occurs during migration in caribou (Lent, 1965) (Text-fig. 1).…”

Section: Testis and Epididymismentioning

confidence: 99%

Age-related changes in the testicular and antler cycles of reindeer, Rangifer tarandus

Leader‐Williams¹

1979

Reproduction

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“…rutting groups (Lent 1965, Bergerud 1973. In forested parts of their range, woodland caribou move about during winter in relatively small groups, i.e., < 20 animals (Darby and Pruitt 1984, King 1985, Ministkre des Forets et al 1991, but in open country, they gather into larger aggregations approaching those of barren-ground caribou (Bergerud 1971, Boonstra and Sinclair 1984, Btlanger and LeHenaff 1985.…”

Section: The Animalsmentioning

confidence: 99%

Woodland caribou: Facts for forest managers

Cumming¹

1992

The Forestry Chronicle

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A literature review points to predation as the proximate factor controlling woodland caribou (Rangifer tarandus caribou) populations in most cases, but that finding does not obviate the need for caribou to be included in forest management. Managers must consider the indirect effects of forest operations on caribou through their impacts on caribou mortality factors, such as predation. Lichens remain important. Habitat destruction may in some cases be the ultimate cause of population decline. Reactions of caribou to disturbance vary, and remain controversial; more research is needed. Multiple resource managers of boreal commercial forests should identify sensitive components of caribou range -calving grounds, rutting locations, wintering areas, and travel routes among them -and prescribe for these areas in forest management plans. Ways of accommodating caribou in commercial forests are not well established, but some examples suggest how this might be done. Most importantly, areas that have been proven by their continued use to contain all necessary requirements for caribou survival should not be physically altered until their essential qualities and functions are better understood.

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Rutting behaviour in a barren-ground caribou population

Cited by 56 publications

References 3 publications

Temporally dynamic habitat suitability predicts genetic relatedness among caribou

Temporally dynamic habitat suitability predicts genetic relatedness among caribou

Age-related changes in the testicular and antler cycles of reindeer, Rangifer tarandus

Woodland caribou: Facts for forest managers

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