Examinando por Autor "Fandos, Paulino"
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Ítem Biology and management of sarcoptic mange in wild Caprinae populations.(John Wiley & Sons Ltd., 2121-01) Pérez-Jiménez, Jesús María; Granados, José Enrique; Espinosa-Cerrato, José; Ráez-Bravo, Arián; López-Olvera, Jorge Ramón; Rossi, Luca; Meneguz, Pier Giuseppe; Angelone, Samer; Fandos, Paulino; Casimiro-Soriguer-Escofet, RamónSarcoptic mange is a cosmopolitan disease affecting the skin of domestic and wild mammalian species and humans as well. In Eurasia, sarcoptidosis (also known as sarcoptic mange or scabies) affects mountain ungulates (Caprinae) among other wild hosts, and epizootic outbreaks induce variable mortality rates. This fact, coupled with the important ecological and socio-economic values of such mammalian hosts, resulted in many research projects being focused on addressing ecological, physiological, behavioural, genetic, and pathological effects of the disease. Nevertheless, information about management of sarcoptic mange in free-ranging populations is scarce and scattered, with contradictory results and a lack of consensus on basic aspects of the disease. In this review, we summarise knowledge on the effects of sarcoptic mange in wild Caprinae, at individual, pathological and population epidemiological levels, as well as on the current tools and management strategies for its detection, diagnosis, prevention, and control. Disease spread in naïve populations is ca. 6 km year−1, and the mortality rate can be >95%. Tools for monitoring the disease include visual diagnosis, photographic traps, trained dogs, thermography, immunodiagnostics, molecular tools, radiocollars, and epidemiological modelling. Options for management include eradication, control, and prevention of the disease; biosecurity and prevention of spread to humans can be achieved by careful hygiene methods. Sarcoptic mange is a natural, biological factor controlling host population numbers and dynamics in Caprinae, so goals and strategies for its management in wild populations must be set accordingly. Specific management programmes for preventing and controlling sarcoptic mange in wild Caprinae populations must be based on reliable epidemiological data. More research is needed to provide evidence-based policies. The efficacy and safety of various management approaches remain to be tested experimentally.Ítem Development of resistance to sarcoptic mange in ibex.(John Wiley & Sons, Inc, 2022-07) Pérez, Jesús M.; López-Montoya, Antonio J.; Cano_Manuel, Francisco J.; Soriguer, Ramón C.; Fandos, Paulino; Granados, José E.Sarcoptic mange affects mammal host species worldwide and, particularly, wild Caprinae throughout much of Eurasia. In the Iberian Peninsula, several outbreaks of sarcoptic mange in Iberian ibex (Capra pyrenaica) have been reported since the 1980s. Using data from a period of long-term monitoring and a seasonal autoregressive integrated moving average (SARIMA)-generalized autoregressive conditional heteroscedasticity (GARCH) model approach, we performed a time-series analysis of the monthly prevalence of sarcoptic mange in the Iberian ibex population in Sierra Nevada Natural Space (S Spain). In January 2003–March 2021, we documented a significant negative trend in sarcoptic mange prevalence, albeit with some interannual peaks. These findings can only be explained if a certain level of resistance to sarcoptic mange exists in hosts that, along with other factors, could provoke this reduced prevalence. Prevalence values varied seasonally, with maximum values in spring and minimum values at the end of summer, which may be due to factors linked to climate, host behavior, and endocrine activity. Our model predicts that the prevalence of sarcoptic mange in the Iberian ibex will continue to decrease over the next 2 years. Despite the inherent challenges involved, the diagnosing and monitoring of wildlife diseases remain a pivotal part of obtaining reliable epidemiological data and designing appropriate management strategies.Ítem Is it time for genetic reinforcement of French Iberian ibex populations?(Elsevier, 2024-01) Pérez-Jiménez, Jesús María; Granados, José Enrique; Garnier, Alexandre; Casimiro-Soriguer, Ramón; Aleix-Mata, Gaël; Sánchez-Baca, Antonio; Fandos, PaulinoAn evolutionary significant unit of the Iberian ibex (Capra pyrenaica), the Pyrenean ibex or “bucardo” (Capra pyrenaica pyrenaica) became extinct in its natural range, the Pyrenees, at the beginning of the twentieth-first century. Several years later (2014-2021) more than 250 specimens (C. p. victoriae) coming from the same donor population from central Spain were released in four localities of the French Pyrenees. Despite an initial fast demographic increase, the genetic variability of these populations remains low. Moreover, it is expected that genetic variability continues to decline due to genetic drift and that inbreeding accumulates. Here we revise options for genetic rescue or reinforcement of these populations involving future release of animals from different extant Spanish populations, mainly those belonging to the subpecies C. p. hispanica. The future hybridization between both phenotypes or “subspecies” may occur anyways in the next years, since currently there is a natural expansion of C. P. hispanica populations from the southern Pyrenees (Spanish side).