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Albert Martinez Silvestre

Albert Martinez Silvestre
CRARC (Catalonian Reptiles and Amphibians Rescue Center). Masquefa. Barcelona. Spain

DVM, MSc, PhD, Dipl ECZM (Herpetology), Acred AVEPA (Exotic Animals)
Working in emerging diseases (virus, fungus, bacteria and parasites) affecting amphibians and reptiles.

About

508
Publications
159,895
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Introduction
CRARC Scientific Director. Scientific Commitee of the Group of Exotic Animal Medicine of Spanish Association of Small Animal Veterinarians (AVEPA). Chief Veterinarian in projects with herpetological fauna: Native Tortoises Catalonia (1999 - today); Giant lizards Canary Islands (2000-today), Control invasive turtles Catalonia (2006-today), Rewild giant tortoises Mauritius Islands (2012-today), ECTOPYR Climatic change & Pirinean Herps (2016- 2020)
Education
September 1988 - May 2011

Publications

Publications (508)
Article
Full-text available
Blood analyses have great potential in studies of ecology, ecotoxicology and veterinary science in wild vertebrates based on advances in human and domestic animal medicine. The major caveat for field researchers, however, is that the ‘rules’ for human or domestic animals haematology do not always apply to wildlife. The present overview shows the st...
Article
Full-text available
Cloacoscopy and cystoscopy are simple, noninvasive to minimally invasive techniques that provide excellent visualization, and result in fast recovery. General or intrathecal anesthesia is sufficient. They can be performed in free-ranging turtles under field conditions. Cloacoscopic gender identification of external genitalia is not reliable because...
Article
Full-text available
Chelonians are among the animal groups with the poorest conservation status. Since tortoises are long‐lived species that need very long time to reach sexual maturity, they are extremely vulnerable to human pressure. Despite their endangered status, there are no common strategies for the devel opment of conservation actions. At the “Mediterranean wo...
Article
Full-text available
We report the first cases of mortality in anurans associated with the presence of the fungus Batra-chochytrium dendrobatidis at four different localities from Catalonia (NE Iberian Peninsula, Spain). All cases were confirmed by both molecular techniques and histology. The infected individuals were two Mediterranean painted frogs (Discoglossus pictu...
Conference Paper
Full-text available
The results show that the fungus Batrachochytrium dendrobatidis is spreading, although not linked to mortality, in all analyzed parks except Olérdola, affecting the species Pelodltes punctatus, Hylla meidionalis, Salamandra salamandra, Pelophllax perezi and Bufo spinosus. Finally, intoxication has also been diagnosed by copper in salamander larvae...
Article
Chytridiomycosis, caused by Batrachochytrium dendrobatidis (Bd) and Batrachochytrium salamandrivorans (Bsal), has had an unprecedented impact on amphibian biodiversity. Although Bd is globally widespread, Bsal is currently spreading, increasing the probability that these pathogens will co-occur in individual amphibians. Interactions among coinfecti...
Conference Paper
Full-text available
En abril de 2020 se realizó un control veterinario de 106 salamandras y tritones de una colección privada de más de 500 urodelos exóticos y autóctonos dedicados al intercambio de estas especies en Barcelona. Las pruebas analíticas realizadas fueron negativas a todos los patógenos excepto a Chlamydia y a Bd . Además, se detectaron formas larvarias (...
Conference Paper
Full-text available
In 2020 and 2021 we have detected in Catalonia (NE Spain) four new locations for the introduced Mediterranean painted frog (Discoglossus pictus) with mortality or dying specimens. All of them were positive for the fungus Batrachochytrium dendrobatidis (Bd). Histology showed intense involvement of the superficial layers of the epidermis. Infection l...
Article
Full-text available
World's Veterinary Journal. 12(1):81-86. Body coloration of emydids can be triggered by different types of factors. Therefore, the current study aimed to investigate the changes in plastron color of Florida Red-bellied Turtle Pseudemys nelsoni (P. nelsoni Carr, 1938), an emydid of North America. In the current study, 15 (3 males and 12 females) fr...
Article
Full-text available
Boletin Asociacion Herpetologica Española: 32:63-66. En los lagartos verdes europeos, y principalmente en el lagarto verde oriental Lacerta viridis, se ha descrito casos de papilomas epiteliales, generalmente diagnosticados en ejemplares en cautividad. El 24 de abril de 2021 se observaron y fotografiaron dos lagartos adultos (macho y hembra) de L....
Article
Consulta de Difusion Veterinaria. 30(287):45-51. En la naturaleza, los cambios en el medio ambiente pueden modificar las dinámicas existentes entre huéspedes y patógenos, dando lugar a la aparición de enfermedades. En las últimas décadas, ha habido cambios ambientales que están afectando a los anfibios y la presencia y persistencia de ciertos patóg...
Chapter
Nevarez, J. (Ed)
Chapter
Nevarez, J. (Ed)
Article
Full-text available
The aim of this research was to contribute to the study of the doming geometry of Testudo carapace as an unstable point of equilibrium when animals are overturned. We performed this research using geometric morphometric using a sample of 64 Testudo individuals belonging to different species (T. hermanni n = 30, T. graeca n = 3, T. marginata n = 13...
Article
Full-text available
Peer Community Journal. 2: e5. Two types of pathogens cause highly contagious upper respiratory tract diseases (URTD) in Chelonians: testudinid herpesviruses (TeHV) and a mycoplasma (Mycoplasma agassizii). In captivity, these infections are frequent and can provoke outbreaks. Pet trade generates an international flow of tortoises, often without san...
Article
Full-text available
Boletin de la Asociacion Herpetologica Española. 32(1-2): 101-103. Las anomalías digitales o del antebrazo son relativamente normales en anfibios anuros (Williams et al., 2008). Respecto a los miembros extranumerarios se han descrito polimelia, polifalangia y polidactilia (Meteyer, 2000). En el género Alytes están descritas las tres anomalías digi...
Chapter
Full-text available
Reptiles medicine, surgery and husbandry. In Spanish. Medicina, manejo y cirugia de reptiles. En Español.
Chapter
Full-text available
Amphibians medicine, surgery and husbandry. In Spanish. Medicina, manejo y cirugia de anfibios. En Español.
Article
Full-text available
Boletin Asociacion Herpetologica Española. 2021. 32(1) 151- 155. En la presente nota se describe el hallazgo en Barcelona (España) de un ejemplar de esta especie, transportado de modo accidental mediante transportes de carga de materiales de construcción desde Bogotá (Colombia). Esta representa la primera vez que se describe un traslado de tal dis...
Conference Paper
Full-text available
Diputació Barcelona. Presentation on sanitary status of amphibians in general and Montseny brook salamander in particular in Montseny Natural Park in the period 2015 - 2020 . New description of presence of the fungus Batrachochytrium dendrobatidis in wild amphibians, detection of bacteria Chlamydia in a ilegal collection as well as a trematoda cyst...
Article
Full-text available
Testudo (Journal British chelonian group). 9:37-45. This health survey of the free-living population of Testudo hermanni hermanni in the Albera region showed an almost complete absence of Herpesvirus, a very high incidence of Mycoplasma, but without any apparent effect on health, and a worrying effect of Picornavirus on the health and survival of t...
Article
Full-text available
Massive die-offs have been reported in Europe, especially in western Europe. Bd is widespread with low prevalence in central Eastern Europe and the Balkans , as well as in northern Europe but no evidence of Bd-linked population declines has been recorded from these regions so far.
Conference Paper
Full-text available
La quitridiomicosis y la ranavirosis afectan ya a miles de especies, y se extienden sin control a través de las especies introducidas, el comercio internacional de especies en general, y el de mascotas, en particular. Este ambicioso proyecto pretende, por un lado, analizar el estado actual de la incidencia de estas enfermedades emergentes de anfibi...
Conference Paper
Full-text available
En este trabajo analizamos la presencia de Ranavirus y de parásitos intestinales en galápagos alóctonos (Trachemys scripta elegans, Trachemys scripta scripta, Pseudemys peninsularis y Pseudemys concinna) capturados en libertad en Cataluña.
Conference Paper
Full-text available
Chelonians are among the most threatened animal groups because due to life history strategy, they are extremely vulnerable to human pressure. At the ""Mediterranean workshop to develop tortoise conservation strategies"" scientists, conservation associations, environmental managers, IUCN advisers and CITES inspectors met in 2019 in Spain. The aims w...
Conference Paper
Full-text available
Aquí presentamos los resultados de diversos análisis (qPCR, necropsia, histología y citología) de seis animales, cinco de ellos encontrados muertos y uno encontrado vivo con síntomas de la enfermedad. Los resultados muestran que la enfermedad en esta especie alcanza cargas de infección extremadamente elevadas que permiten incluso un diagnóstico ráp...
Poster
Full-text available
Amphibians are the most threatened vertebrate taxa on Earth, with over 40% of their species at risk of extinction. Therefore, there is an increasing need to monitor their health status and population trends. Capture-mark-recapture studies are an essential tool to study population and disease dynamics. Marking techniques need to be reliable, having...
Preprint
Full-text available
A bstract Two types of pathogens cause highly contagious upper respiratory tract diseases (URTD) in Chelonians: testudinid herpesviruses (TeHV) and a mycoplasma ( Mycoplasma agassizii ). In captivity, these infections are frequent and can provoke outbreaks. Pet trade generates international flow of tortoises, often without sanitary checking; indivi...
Article
Full-text available
Snakes are sentient animals and should be subject to the accepted general welfare principles of other species. However, they are also the only vertebrates commonly housed in conditions that prevent them from adopting rectilinear behavior (ability to fully stretch out). To assess the evidence bases for historical and current guidance on snake spatia...
Article
Full-text available
Snakes are sentient animals and should be subject to the accepted general welfare principles of other species. However, they are also the only vertebrates commonly housed in conditions that prevent them from adopting rectilinear behavior (ability to fully stretch out). To assess the evidence bases for historical and current guidance on snake spatia...
Article
Full-text available
Despite the relevance of chemical communication in vertebrates, comparative examinations of macroevolutionary trends in chemical signaling systems are scarce. Many turtle and tortoise species are reliant on chemical signals to communicate in aquatic and terrestrial macrohabitats, and many of these species possess specialized integumentary organs, t...
Article
Full-text available
Amphibians are threatened globally and emerging diseases are some of the most important drivers of their catastrophic situation. There is increasing evidence that the international trade in live amphibians is one of the most important mechanisms driving pathogen pollution. Here, we report the presence of Batrachochytrium dendrobatidis (Bd) and Rana...
Poster
Full-text available
Picornavirus is a recently confirmed agent to cause outbreaks of mortality in young tortoises. An outbreak in a breeding center of this species is described. Out of a total of 110 infants in 2019, 85 were affected with symptoms and 45 animals died. Histology showed renal tubule vacuolization, renal interstitial edema, and loss of bone remodeling. S...
Preprint
Testudo. Journal of British Chelonian group. Vol. X. 2021. This health survey of the free-living population of Testudo hermanni hermanni in the Albera region showed an almost complete absence of Herpesvirus, a very high incidence of Mycoplasma, but without any apparent effect on health, and a worrying effect of Picornavirus on the health and surviv...
Article
In order to advance understanding of the current infection status related to the presence of Batrachochytrium spp. in different populations, we tested for the presence/absence (qualitative analysis) of Bd and Bsal in 13 monitored populations and measured the Bd infection loads (quantitative analysis) of 16 populations of the Pyrenean Brook Newt in...
Article
Full-text available
The trading and keeping of exotic pets are associated with animal welfare, conservation, environmental protection, agricultural animal health, and public health concerns and present serious regulatory challenges to legislators and enforcers. Most legislation concerning exotic pet trading and keeping involves restricting or banning problematic speci...
Article
Full-text available
Boletin de la Asociacion Herpetologica Española, 31: 78-79. Se describe un caso de hinchazón por síndrome de edema en tritón jaspeado (Triturus marmoratus) en libertad en Galicia (NW España).
Conference Paper
Full-text available
En la Rana pyrenaica, del Parque Nacional Ordesa Monteperdido, la infección por el hongo Batrachochitrium dendrobatidis es moderada, probablemente por la ausencia de su principal superhospedador en zonas de montaña (larvas invernantes de A. obstetricans). El virus Ranavirus está ampliamente extendido en el parque, infectando a todas las especies y...
Article
Full-text available
In the Eocene sea turtle Osonochelus decorata (Lapparent de Broin, et al., 2014) a detailed review of the specimen allowed the detection of a digital fracture in the middle phalanx of the left hind limb. This fracture was recovered and consolidated with malunion during the individual's life. In comparison with the casuistry in current marine turtle...
Article
Climate change is generating range shifts in many organisms, notably along the altitudinal gradient. However, moving up in altitude exposes organisms to lower oxygen availability, which may negatively affect development and fitness, especially at high temperatures. To test this possibility in a potentially upward-colonizing species, we artificially...
Article
Climate change is generating range shifts in many organisms, notably along the altitudinal gradient. However, moving up in altitude exposes organisms to lower oxygen availability, which may negatively affect development and fitness, especially at high temperatures. To test this possibility in a potentially upward-colonizing species, we artificially...
Article
Full-text available
Butlleti de la Societat Catalana d'Herpetologia. 28:53-56. The finding of a population of common parsley frog (Pelodytes punctatus) with 15 albino specimens in the Osona region (Barcelona, Catalonia) is described. The specimens had already metamorphosed and had the same size, and thus we consider them siblings of the same clutch with passing of the...
Article
Full-text available
Testudo. 29(3): 4-20. Bereits im Herbst 2019 war ein Artikel über die autochthonen und allochtho- nen Landschildkröten in Katalonien in der Radiata erschienen (PFAU & BUDO 2019), und wir danken der SIGS, dass wir die verschiedenen Aspekte hier leicht verändert und an die neuen Erkenntnisse angepasst noch einmal publik machen können. Vor allem die T...
Article
Quercus. 415. Septiembre 2020. 54-59. La paleopatología estudia las enfermedades que afectaron a los animales de épocas pasadas. Su registro es muy difícil de detectar, pues tienen que haber dejado señales en las estructuras que fosilizan posteriormente, así que está limitada a un reducido número de ejemplares. Sin embargo, el creciente interés por...
Article
We report the first case of lordosis in a European freshwater turtle (Emys orbicularis), being the first reported case of a lordotic wild turtle in Europe.
Article
Full-text available
Bilateral symmetry is not uncommon in animal kingdom, and animals can deviate from expected symmetry and manifest some forms of asymmetries. Fluctuating asymmetry is considered a tool for valuating developmental instability, whereas directional asymmetry is inherited. Here we use the method of geometric morphometrics to analyse left/right asymmetri...
Article
Clinetovet: Revista Clínica de Etología Veterinaria, 16: 10-17. Ethology as a tool to understand the sentience, welfare and emotions in reptiles. https://www.multimedica.es/revistas/clinetovet/details/53/159
Article
Background Hermann's tortoise is one of the most popular reptiles kept as pet which underlines the importance to reinforce the information needed to provide advanced and adequate veterinary care in exotic animal species. Therefore, the purpose of this study, performed in Testudo hermanni, was to evaluate corneal touch threshold (CTT) and its feasib...
Article
Full-text available
Boletin de la Asociacion Herpetologica Española. 2020. 31(1) 161-164. La tortuga jeroglífico Pseudemys concinna (Le Conte, 1830) es un galápago americano, originario de los cursos fluviales y ambientes lacustres del sudeste de los Estados Unidos. Esta tortuga viene siendo comercializada cada vez más como mascota tras la inclusión en el catálogo esp...
Article
Full-text available
Boletin de la Asociacion Herpetologica Española. 2020. 31 (1) 165-171. La hinchazón del cuerpo (cavidad celómica y otras zonas como tejido subcutáneo) en anfibios atiende a una acumulación de fluido debido a cualquier proceso patológico que comprometa el balance osmótico. Los animales afectados pueden duplicar y triplicar su peso corporal debido a...
Article
Full-text available
The Conversation. https://theconversation.com/como-evitar-el-abandono-de-mascotas-exoticas-140357. 1-9
Article
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Climate change is generating range shifts in many organisms, notably along the elevational gradient in mountainous environments. However, moving up in elevation exposes organisms to lower oxygen availability, which may reduce the successful reproduction and development of oviparous organisms. To test this possibility in an upward‐colonizing species...
Article
Full-text available
Historical factors (colonization scenarios, demographic oscillations) and contemporary processes (population connectivity, current population size) largely contribute to shaping species’ present‐day genetic diversity and structure. In this study, we use a combination of mitochondrial and nuclear DNA markers to understand the role of Quaternary clim...
Article
Non-native turtles are susceptible to pathogenic infections that may be transmitted to native species. We performed hematological, biochemical, histopathological, and microbiological analyses in two invasive populations of red-eared sliders (Trachemys scripta elegans), which were living alongside native turtle species in southwestern Spain. The red...
Article
Full-text available
Despite evidence from anatomy, behavior and genomics indicating that the sense of smell in turtles is important, our understanding of chemical communication in this group is still rudimentary. Our aim was to describe the microanatomy of mental glands (MGs) in a freshwater turtle, Mauremys leprosa (Geoemydidae), and to assess the chemical compositio...