Diseases and reproductive success in a wild mammal: example in the alpine chamois

Pioz, Maryline; Loison, Anne; Gauthier, D.; Gibert, P.; Jullien, Jérôme; Artois, Marc; Gilot‐Fromont, Emmanuelle

doi:10.1007/s00442-007-0942-5

Cited by 48 publications

(40 citation statements)

References 56 publications

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“…), and higher antibody titers can be found around parturition, although these high titers persist for several weeks (Office International des Epizooties 2004; Pioz et al 2008). However, to our knowledge, no studies specifically dealing with seasonrelated changes in the prevalence of antibodies for the three pathogens aforementioned have been published.…”

Section: Discussionmentioning

confidence: 93%

Serological survey of selected infectious diseases in mouflon (Ovis aries musimon) from south-central Spain

et al. 2008

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Section: Discussionmentioning

confidence: 93%

Serological survey of selected infectious diseases in mouflon (Ovis aries musimon) from south-central Spain

et al. 2008

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“…Pioz et al (2008) found that 36% of the annual variation in reproductive success of alpine chamois (Rupicapra rupicapra) was explained by the prevalence of antibodies against Salmonella enterica, Chlamydophilia abortus, and Coxiella burnetii. Bluetongue virus infections in mule deer and white-tailed deer appear to decrease breeding success and cause reproductive failure (Thorne et al, 1988), although the underlying mechanism is unclear.…”

Section: Discussionmentioning

confidence: 99%

“…Although effects of disease on survival are well established for a broad range of pathogens, effects on recruitment of young are not as well understood. Disease can reduce the number of offspring recruited to the population directly by influencing the fertility of adults or, when diseases are transmitted to offspring, by reducing survival of newborn and young (Thorne et al, 1988;Dubey et al, 2007;George et al, 2008;Pioz et al, 2008). Alternatively, recruitment can be influenced indirectly by disease effects that change maternal behaviors such as foraging, avoiding predators, and caring for young.…”

Section: Introductionmentioning

confidence: 99%

Estimating Chronic Wasting Disease Effects on Mule Deer Recruitment and Population Growth

Dulberger

Hobbs

Swanson³

et al. 2010

Journal of Wildlife Diseases

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ABSTRACT:Chronic wasting disease (CWD), a prion disease of mule deer (Odocoileus hemionus), accelerates mortality and in so doing has the potential to influence population dynamics. Although effects on mule deer survival are clear, how CWD affects recruitment is less certain. We studied how prion infection influenced the number of offspring raised to weaning per adult ($2 yr old) female mule deer and subsequently the estimated growth rate (l) of an infected deer herd. Infected and presumably uninfected radio-collared female deer were observed with their fawns in late summer (August-September) during three consecutive years (2006)(2007)(2008) in the Table Mesa area of Boulder, Colorado, USA. We counted the number of fawns accompanying each female, then used a fully Bayesian model to estimate recruitment by infected and uninfected females and the effect of the disease on l. On average, infected females weaned 0.95 fawns (95% credible interval50.56-1.43) whereas uninfected females weaned 1.34 fawns (95% credible interval51.09-1.61); the probability that uninfected females weaned more fawns than infected females was 0.93). We used estimates of prevalence to weight recruitment and survival parameters in the transition matrix of a three-age, single-sex matrix model and then used the matrix to calculate effects of CWD on l. When effects of CWD on both survival and recruitment were included, the modeled l was 0.97 (95% credible interval 5 0.82-1.09). Effects of disease on l were mediated almost entirely by elevated mortality of infected animals. We conclude that although CWD may affect mule deer recruitment, these effects seem to be sufficiently small that they can be omitted in estimating the influences of CWD on population growth rate.

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“…were found to explain 36% of the annual variation in reproductive success of the population (Pioz et al, 2008a). In a follow-up study, the relationship between the serological status concerning the three bacteria and the reproductive success was investigated.…”

Section: Salmonella Enterica Serovar Abortusovis Chlamydophila Abortmentioning

confidence: 99%

Alpine ibex (Capra i. ibex) is not a reservoir for chlamydial infections of domestic ruminants and humans

et al. 2010

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Chlamydophila (C.) abortus is the most common infectious abortigenic agent in small domestic ruminants in Switzerland. In contrast, the knowledge about chlamydiae in wild ruminants is scarce. As interactions between livestock and Alpine ibex (Capra i. ibex) occur on alpine pastures, the question raises if wild ruminants could play a role as carriers of chlamydiae. Thus, we investigated the prevalence of chlamydiae in Alpine ibex in Switzerland. In total, 624 sera, 676 eye swabs, 84 organ samples and 51 faecal samples from 664 ibex were investigated. Serum samples were tested by two commercial ELISA kits specific for C. abortus. Eye swabs, organs and faecal samples were examined by a Chlamydiaceae-specific real-time PCR. Positive cases were further investigated by the ArrayTube (AT) microarray method for chlamydial species determination. Of 624 serum samples investigated, 612 animals were negative, whereas nine sera (1.5%) reacted positively in one of the two tests and three sera showed an inconclusive result. Eye swabs of seven out of 412 ibex (1.7%) were tested positive for Chlamydiaceae by real-time PCR. By AT microarray, Chlamydophila pecorum was identified in two animals, Chlamydophila pneumoniae was detected in one animal and a mixed infection with Chlamydophila abortus and Chlamydophila pecorum was found in four animals. Organs and faecal samples were all negative by real-time PCR analysis. In summary, we conclude that C. abortus is not a common infectious agent in the Swiss ibex population. To our knowledge, this is the first description of C. pneumoniae in ibex. Further studies are necessary to elucidate the situation in other species of wild ruminants as chamois (Rupicapra r. rupicapra), red deer (Cervus elaphus) and roe deer (Capreolus c. capreolus) in Switzerland. (C.) abortus is the most common infectious abortigenic agent in small domestic ruminants in Switzerland. In contrast, the knowledge about chlamydiae in wild ruminants is scarce. As interactions between livestock and Alpine ibex (Capra i. ibex) occur on alpine pastures, the question raises if wild ruminants could play a role as carriers of chlamydiae. Thus, we investigated the prevalence of chlamydiae in Alpine ibex in Switzerland. In total, 624 sera, 676 eye swabs, 84 organ samples and 51 faecal samples from 664 ibex were investigated. Serum samples were tested by two commercial ELISA kits specific for C. abortus. Eye swabs, organs and faecal samples were examined by a Chlamydiaceae-specific real-time PCR. Positive cases were further investigated by the ArrayTube (AT) microarray method for chlamydial species determination. Of 624 serum samples investigated, 612 animals were negative, whereas nine sera (1.5%) reacted positively in one of the two tests and three sera showed an inconclusive result. Eye swabs of seven out of 412 ibex (1.7%) were tested positive for Chlamydiaceae by real-time PCR. By AT microarray, Chlamydophila pecorum was identified in two animals, Chlamydophila pneumoniae was detected in one animal and a mixed infec...

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Diseases and reproductive success in a wild mammal: example in the alpine chamois

Cited by 48 publications

References 56 publications

Serological survey of selected infectious diseases in mouflon (Ovis aries musimon) from south-central Spain

Serological survey of selected infectious diseases in mouflon (Ovis aries musimon) from south-central Spain

Estimating Chronic Wasting Disease Effects on Mule Deer Recruitment and Population Growth

Alpine ibex (Capra i. ibex) is not a reservoir for chlamydial infections of domestic ruminants and humans

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