RefDoc
Haut

Faire une nouvelle recherche
Make a new search
Lancer la recherche


Titre du document / Document title

Spatial dynamics of sympatric canids : Modeling the impact of coyotes on red wolf recovery

Auteur(s) / Author(s)

ROTH James D. (1) ; MURRAY Dennis L. (2) ; STEURY Todd D. (3) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) Department of Biology, University of Central Florida, Orlando, FL 32816-2368, ETATS-UNIS
(2) Department of Biology, Trent University, Peterborough, Ontario K9J 7B8, CANADA
(3) Department of Biology, Washington University, St. Louis, MO 63130, ETATS-UNIS

Résumé / Abstract

Interspecific competition can have a substantial impact on sympatric carnivore populations and may threaten reintroduction attempts of threatened or endangered species. Coyotes (Canis latrans) are the primary threat to recovery of red wolves (C. rufus) in the wild, through hybridization and loss of the red wolf genotype and habitat occupancy that reduces space available for wolf occupation. We built a stochastic simulation model (using data collected from a recovering red wolf population in northeastern North Carolina as well as from the literature) to examine spatial dynamics of sympatric red wolves and coyotes (independent of habitat influences) and to elucidate the potential role of coyotes on wolf recovery and reintroduction success. Survival of juvenile and adult wolves had the greatest impact on wolf population size and likelihood of extinction. Introducing coyotes to the model had a substantial negative impact on wolf numbers, and the model was highly sensitive to the estimates of the competitive impact of coyotes on red wolves, through declines in wolf productivity. We simulated coyote management from either removal (lower coyote survival) or surgical sterilization (lower coyote reproductive rates) and found that both management strategies increased viability of red wolf populations, especially during initial colonization. Our results suggest that coyotes can inhibit red wolf reintroduction success through competitive interactions, but that management of coyote populations can improve the probability of successful wolf recovery. Additional information on spatial dynamics and dietary overlap between coyotes and wolves in the recovery area is needed to further elucidate the current and potential competitive impact of coyotes on red wolf populations.

Revue / Journal Title

Ecological modelling    ISSN  0304-3800   CODEN ECMODT 

Source / Source

2008, vol. 214, no2-4, pp. 391-403 [13 page(s) (article)] (1 p.3/4)

Langue / Language

Anglais

Editeur / Publisher

Elsevier, Amsterdam, PAYS-BAS  (1975) (Revue)

Mots-clés anglais / English Keywords

Vertebrata

;

Mammalia

;

Carnivora

;

Fissipedia

;

Reintroduction

;

Canis lupus

;

Canis latrans

;

Simulation model

;

Competition

;

Restoration

;

Modeling

;

Sympatry

;

Dynamics

;

Mots-clés français / French Keywords

Canidae

;

Vertebrata

;

Mammalia

;

Carnivora

;

Fissipedia

;

Réintroduction

;

Canis lupus

;

Canis latrans

;

Modèle simulation

;

Compétition

;

Restauration

;

Modélisation

;

Sympatrie

;

Dynamique

;

Mots-clés espagnols / Spanish Keywords

Vertebrata

;

Mammalia

;

Carnivora

;

Fissipedia

;

Reintroducción

;

Canis lupus

;

Canis latrans

;

Modelo simulación

;

Competencia

;

Restauración

;

Modelización

;

Simpatimetría

;

Dinámica

;

Mots-clés d'auteur / Author Keywords

Canis latrans

;

Canis rufus

;

Competition

;

Reintroduction

;

Sympatry

;

Simulation model

;

Localisation / Location

INIST-CNRS, Cote INIST : 15732, 35400018319914.0260

Nº notice refdoc (ud4) : 20375093



Faire une nouvelle recherche
Make a new search
Lancer la recherche
Bas