Showing papers by "Peter Arcese published in 1998"
TL;DR: A simple model is presented to suggest that variation in inbreeding avoidance behaviors in birds may arise from differences in survival rates: in species with low survival rates, the costs of forfeiting matings to avoid inbreeding may exceed the cost of inbreeding.
Abstract: We studied mate choice and inbreeding avoidance a natural population of song sparrows (Melospiza melodia) on Mandarte Island, Canada. Inbreeding occurred regularly: 59% all matings were between known relatives. We tested for inbreeding avoidance by comparing the observed levels of inbreeding to those expected if mate choice had been random with respect to relatedness. Independent of our assumptions about the availability of mates in the random mating model, we found that the expected and observed distributions of inbreeding coefficients were similar, as was the expected and observed frequency of close (f ≥ 0.125) inbreeding. Furthermore, there was no difference in relatedness observed pairs and those that would have resulted had birds mated instead with their nearest neighbors. The only evidence to suggest any inbreeding avoidance was a reduced rate of parent‐offspring matings as compared to one random mating model but not the other. Hence, despite substantial inbreeding depression in this popula...
130 citations
TL;DR: This article developed a model coupling wildlife population dynamics to endogenous human consumption and poaching behavior in an environment of imperfect labor and product markets and static agricultural production technology subject to environmental shocks, and simulated how long an integrated conservation and development project based on managed wildlife harvest might effectively delay biodiversity loss by preempting poaching.
Abstract: This paper develops a model coupling wildlife population dynamics to endogenous human consumption and poaching behavior in an environment of imperfect labor and product markets and static agricultural production technology subject to environmental shocks. Using a model of the Serengeti wildebeest herd, we simulate how long an integrated conservation and development project based on managed wildlife harvest might effectively delay biodiversity loss by preempting poaching. Alternative interventions that more directly tackle the problem of time varying returns to peasant agricultural labor appear to offer more durable solutions to the challenge of wildlife conservation in the midst of endemic rural poverty.
118 citations
TL;DR: This paper developed a model coupling wildlife population dynamics to endogenous human consumption and poaching behavior in an environment of imperfect labor and product markets and static agricultural production technology subject to environmental shocks, and simulated how long an integrated conservation and development project based on managed wildlife harvest might effectively delay biodiversity loss by preempting poaching.
Abstract: This paper develops a model coupling wildlife population dynamics to endogenous human consumption and poaching behavior in an environment of imperfect labor and product markets and static agricultural production technology subject to environmental shocks. Using a model of the Serengeti wildebeest herd, we simulate how long an integrated conservation and development project based on managed wildlife harvest might effectively delay biodiversity loss by preempting poaching. Alternative interventions that more directly tackle the problem of time-varying returns to peasant agricultural labor appear to offer more durable solutions to the challenge of wildlife conservation in the midst of endemic rural poverty.
107 citations