Jaime Bosch

Jaime Bosch
Biodiversity Research Institute (IMIB)

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291
Publications
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Introduction
Skills and Expertise

Publications

Publications (291)
Article
Full-text available
The level of detail on host communities needed to understand multihost parasite invasions is an unresolved issue in disease ecology. Coarse community metrics that ignore functional differences between hosts, such as host species richness, can be good predictors of invasion outcomes. Yet if host species vary in the extent to which they maintain and...
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...
Preprint
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Multiple Quaternary glacial refugia in the Iberian Peninsula, commonly known as “refugia within refugia”, allowed diverging populations to come into contact and admix, potentially boosting substantial mito-nuclear discordances. In this study, we employ a comprehensive set of mitochondrial and nuclear markers to shed light onto the drivers of geogra...
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
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Background The fungal pathogen Batrachochytrium dendrobatidis ( Bd ) threatens amphibian biodiversity and ecosystem stability worldwide. Amphibian skin microbial community structure has been linked to the clinical outcome of Bd infections, yet its overall functional importance is poorly understood. Methods Microbiome taxonomic and functional profi...
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...
Article
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The intensity of a pathogen infection plays a key role in determining how the host responds to infection. Hosts with high infections are more likely to transmit infection to others, and are may be more likely to experience progression from infection to disease symptoms, to being physiologically compromised by disease. Understanding how and why host...
Article
Multiple threats, including emerging infectious diseases, are contributing to the extinction of amphibians worldwide. One of the most devastating diseases is the fatal amphibian skin disease chytridiomycosis caused by the fungus Batrachochytrium dendrobatidis (Bd). The presence of Bd in North Africa was described in 2011 and this included the distr...
Conference Paper
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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
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Microplastics (MPs), a new class of pollutants that pose a threat to aquatic biodiversity, are of increasing global concern. In tandem, the amphibian chytrid fungus Batrachochytrium dendrobatidis (Bd) causing the disease chytridiomycosis is emerging worldwide as a major stressor to amphibians. We here assess whether synergies exist between this inf...
Article
Emerging infectious diseases are a threat to biodiversity and have taken a large toll on amphibian populations worldwide. The chytrid fungi Batrachochytrium dendrobatidis ( Bd ) and B. salamandrivorans ( Bsal ), and the iridovirus Ranavirus ( Rv ), are of concern as all have contributed to amphibian declines. In central and eastern Europe, their ge...
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...
Article
Full-text available
Considering that emerging infectious diseases are one of the major drivers of global amphibian decline, controlling the spread of infections are even more challenging. Amphibian skin disease chytridiomycosis, which is caused by two species of fungi belonging to the Batrachochytrium genus, has been detected in at least 700 amphibian species causing...
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
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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
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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
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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...
Article
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Leaf litter of alder (Alnus glutinosa) is a key resource to detrital stream food webs. Due to its high quality and palatability, it is readily colonised by microorganisms and consumed by detritivores, contributing significantly to carbon and nutrient cycling and to ecosystem functioning. Given that this species has declined due to the spread of the...
Article
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The recent introduction of the chytrid fungus Batrachochytrium salamandrivorans into northeastern Spain threatens salamander diversity on the Iberian Peninsula. We assessed the current epidemiological situation with extensive field sampling of urodele populations. We then sought to delineate priority regions and identify conservation units for the...
Article
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Amphibians are the most highly threatened vertebrates, and emerging pathogens are a serious threat to their conservation. Amphibian chytrid fungi and the viruses of the Ranavirus genus are causing disease outbreaks worldwide, including in protected areas such as National Parks. However, we lack information about their effect over amphibian populati...
Article
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The relationship between detritivore diversity and decomposition can provide information on how biogeochemical cycles are affected by ongoing rates of extinction, but such evidence has come mostly from local studies and microcosm experiments. We conducted a globally distributed experiment (38 streams across 23 countries in 6 continents) using stand...
Article
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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...
Article
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Running waters contribute substantially to global carbon fluxes through decomposition of terrestrial plant litter by aquatic microorganisms and detritivores. Diversity of this litter may influence instream decomposition globally in ways that are not yet understood. We investigated latitudinal differences in decomposition of litter mixtures of low a...
Article
Full-text available
Running waters contribute substantially to global carbon fluxes through decomposition of terrestrial plant litter by aquatic microorganisms and detritivores. Diversity of this litter may influence instream decomposition globally in ways that are not yet understood. We investigated latitudinal differences in decomposition of litter mixtures of low a...
Article
Full-text available
Many organisms avoid habitats posing risks of parasitism. Parasites are not generally conspicuous, however, which raises the question of what cues individuals use to detect parasitism risk. Here, we provide evidence in alpine newts (Ichthyosaura alpestris) that non-visual cues from parasite-exposed conspecifics inform habitat avoidance. Alpine newt...
Article
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Coping with anthropogenic environmental change is among the greatest challenges faced by wildlife, and endocrine flexibility is a potentially crucial coping mechanism. Animals may adapt to anthropogenic environments by dampening their glucocorticoid stress response, but empirical tests of this hypothesis have provided mixed evidence. An alternative...
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
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Understanding the occurrence and consequence of co-infections can be useful in designing disease management interventions. Amphibians are the most highly threatened vertebrates, and emerging pathogens are a serious threat to their conservation. The amphibian chytrid fungus and the viruses of the Ranavirus genus are already widely distributed, causi...
Conference Paper
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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
Infectious diseases are considered major threats to biodiversity, however strategies to mitigate their impacts in the natural world are scarce and largely unsuccessful. Chytridiomycosis is responsible for the decline of hundreds of amphibian species worldwide, but an effective disease management strategy that could be applied across natural habitat...
Conference Paper
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One of the most important driver of amphibians’ continuing global declining trend are emerging infectious diseases which cause amphibian mass mortality worldwide. Here we present screening results on genus Pelophylax (Amphibia, Anura) of two deadly amphibian pathogens Batrachochytrium dendrobatidis (Bd) and Ranavirus (Rv). A total of 15 different s...
Article
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Most parasites and pathogens infect multiple hosts, but a great deal of variation exists in the role of those hosts in persistence of infection. Understanding which hosts are most important in maintaining parasites can provide a clearer target for infection control. Recently developed empirical and theoretical approaches provide a way to quantify t...
Article
As a result of anthropogenic activities, changes to the chemistry of Earth's atmosphere pose a threat to ecosystem health and biodiversity. One such change is the increase in tropospheric ozone (O3), which is particularly severe in the Mediterranean basin area, where the levels of this pollutant are chronically high during spring and summer time. W...
Article
Positive and negative environmental effects of the COVID-19 pandemic have been receiving increasing attention. In this debate, we present a short synthesis on the subject. Social isolation was one of the responses around the world, which made global trade less extensive and intensive, thereby possibly reducing its impact on nature, especially consi...
Article
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Ranaviruses are agents of disease, mortality and population declines in ectothermic vertebrates and emergences have been repeatedly linked to human activities. Ranaviruses in the common midwife toad ranavirus lineage are emerging in Europe. They are known to be severe multi-host pathogens of amphibians and can also cause disease in reptiles. Recurr...
Article
Emerging infectious diseases represent a key problem for the survival of amphibian populations. Declines related to infections of the chytrid fungus Batrachochytrium dendrobatidis and Ranavirus have been described in several areas of Northern Spain, including protected areas. Co-infection—the simultaneous infection of a host by multiple pathogen sp...
Article
Full-text available
Amphibian larvae are known to display defensive behavior in response to water borne chemical cues from aquatic predators that they recognize as a threat, either innately or via learning. Such potential for adaptive behavioral plasticity may increase population resilience in montane habitats, where many unique amphibian assemblages have suffered fro...
Conference Paper
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Between 2017 and 2019, and especially in coincidence with the detection of the fungus Batrachochitrium salamandrivorans (Bsal) in the amphibians of the Montnegre Natral Park, there has been an increase in the sanitary analysis of detection of this and other pathogenic microorganisms in all around Catalonia. A total of 1227 animals of 20species have...
Conference Paper
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In March 2018, was detected the first positive of the fungus Batrachochytrium salamandrivorans in the Montnegre Park in an exotic amphibian (Triturus anatolicus). Since then, among other control measures, exotic amphibians (Triturus anatolicus and Ycthiosaura alpestris) and native (Triturus marmoratus and 2 Salamandra salamandra) were removed from...
Article
Full-text available
Emerging infectious diseases are increasingly recognized as a severe threat to wildlife. Chytridiomycosis, caused by Batrachochytrium dendrobatidis (Bd), is considered one of the most important causes for the decline of amphibian populations worldwide. Identifying potential biological reservoirs and characterizing the role they can play in pathogen...
Article
Full-text available
The fungal pathogen Batrachochytrium dendrobatidis (Bd) is the causative agent of chytridiomycosis and has been a key driver in the catastrophic decline of amphibians globally. While many strategies have been proposed to mitigate Bd outbreaks, few have been successful. In recent years, the use of probiotic formulations that protect an amphibian hos...
Article
Full-text available
Biodiversity loss is one major outcome of human-mediated ecosystem disturbance. One way that humans have triggered wildlife declines is by transporting disease-causing agents to remote areas of the world. Amphibians have been hit particularly hard by disease due in part to a globally distributed pathogenic chytrid fungus (Batrachochytrium dendrobat...
Article
Full-text available
Biodiversity loss is one major outcome of human-mediated ecosys- tem disturbance. One way that humans have triggered wildlife declines is by transporting disease-causing agents to remote areas of the world. Amphibians have been hit particularly hard by disease due in part to a globally distributed pathogenic chytrid fungus (Batrachochytrium dendrob...
Presentation
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Amphibian declines are emblematic of the current extinction event on Earth. Beyond many factors diseases are identified as main stressors of global decline. Fungal pathogens such as Batrachochytrium dendrobatidis (Bd) and B. salamandrivorans are responsible for chytridiomycosis and viruses of the genus Ranavirus (Rv) also present a considerable dis...
Conference Paper
Full-text available
Amphibian declines are emblematic of the current extinction event on Earth. Beyond many factors diseases are identified as main stressors of global decline. Fungal pathogens such as Batrachochytrium dendrobatidis (Bd) and B. salamandrivorans are responsible for chytridiomycosis and viruses of the genus Ranavirus (Rv) also present a considerable dis...
Article
Full-text available
The infectious chytrid fungus Batrachochytrium salamandrivorans ( Bsal ) has been responsible for severe population declines of salamander populations in Europe. Serious population declines and loss of urodelan diversity may occur if appropriate action is not taken to mitigate against the further spread and impact of Bsal . We provide an overview o...
Article
Full-text available
We analyse if the presence of the invasive Discoglossus pictus and the native Epidalea calamita in the same geographic area can shape the dynamics of infection by Batrachochytridium dendrobatidis (Bd). Both amphibian species share breeding habitat preferences in the area (i.e. ephemeral and temporary ponds) and are common syntopic competitors. We s...
Article
Full-text available
Understanding how animal behavior can influence the susceptibility of endangered hosts to emerging pathogens and using this knowledge to ameliorate negative effects of infectious wildlife diseases is a promising avenue in conservation biology. Chytridiomycosis, an emerging infectious disease caused by the fungal pathogen Batrachochytrium dendrobati...
Article
Full-text available
Introduction of alien fish is a major problem for the conservation of amphibians inhabiting originally fishless mountain streams. While fish eradication programs in lakes and ponds have proven successful for the recovery of amphibian populations, there is no such information for stream-dwelling amphibians, possibly because fish removal from streams...
Article
Full-text available
Climate change and infectious disease by the chytrid fungus Batrachochytrium dendrobati-dis (Bd) are major drivers of amphibian extinctions, but the potential interactions of these two factors are not fully understood. Temperature is known to influence (1) the infectivity, pathogenicity and virulence of Bd; (2) host-parasite dynamics, especially wh...