27 October, 2017

Demasiada luz para los anfibios

×There is no translation available.Son muchos los impactos que el ser humano ejerce sobre sobre los ecosistemas, pero algunos pasan más desapercibidos que otros o, simplemente, no nos parece que tengan una influencia tan negativa sobre los organismos. Descubre cómo una contaminación aparentemente más inocua puede alterar la fisiología, comportamiento y ecología de los anfibios.
11 August, 2017

¿Qué podemos hacer para parar al nuevo hongo asesino de anfibios?

×There is no translation available.La nueva especie de hongo asesino de anfibios se encuentra en este momento en Europa, y es cuestión de tiempo que llegue a España. Gracias a un nuevo proyecto puedes ayudarnos a detectar su llegada cuanto antes y paliar sus efectos, sigue leyendo y te contamos cómo hacerlo.
04 August, 2017

Luz al final del túnel para las poblaciones de sapo partero del Macizo de Peñalara

×There is no translation available.Siempre es una buena noticia la suelta de ejemplares criados en cautividad para reforzar poblaciones amenazadas. En este caso os contamos porqué hemos liberado otros 50 ejemplares adultos de sapo partero en Peñalara y, además, con la participación de voluntarios de WWF  
28 July, 2017

Cómo conservar nuestros lagos de montaña

×There is no translation available.A primeros de julio participamos en el Congreso Internacional sobre Conservación de Lagos de Montaña que tuvo lugar en el Parque Nacional Grand Paradiso de los Alpes Italianos, y donde pudimos discutir con expertos en la materia sobre cómo hacer frente a las amenazas de nuestros lagos de montaña.
19 July, 2017

Bacterias lácticas para la leche, el yogur y... contra la quitridiomicosis

×There is no translation available.La rana toro (Lithobates catesbeianus) se comporta como una especie alóctona invasora en muchas zonas del planeta. Para colmo, las ranas toro introducidas suelen ser portadoras del hongo causante de la quitridiomicosis (Bd) pese a que no suelen desarrollar la enfermedad. Esta resistencia a Bd de la rana toro proviene, en parte, de bacterias lácticas presentes en su piel que presentan actividad anti-Bd. Por lo tanto, su utilización como probióticos podría representar una alternativa eficaz al uso de antifúngicos que producen daños ecológicos
14 July, 2017

Muy malas noticias para nuestros anfibios

×There is no translation available.Aunque la pérdida del hábitat sigue siendo la mayor amenaza para los anfibios de todo el planeta, las enfermedades emergentes específicas podrían pronto convertirse en su principal problema de conservación. En un estudio recientemente publicado sobre la nueva especie de hongo quitrídio (Batrachochytrium salamandrivorans) se han descrito nuevas características muy preocupantes que le hacen prácticamente indestructible.
31 May, 2017

Sana sana, culito de rana

×There is no translation available.La tan manida pregunta '¿para qué sirven las ranas?' tiene numerosas respuestas, y una publicación científica reciente añade una nueva razón práctica para conservar nuestros anfibios. ¿Nos libraremos en un futuro próximo de la incómoda gripe gracias a las ranas?
24 May, 2017

Peces, cangrejos (y hongos) a debate

×There is no translation available.Este viernes Jaime Bosch comentará en el Gabinete de Historia Natural su artículo que aparece en el número del mes de mayo de la revista Quercus sobre los problema de conservación de las poblaciones de anfibios que resisten en las canteras de Alpedrete, al pie de nuestra querida Sierra de Guadarrama
03 May, 2017

Una enfermedad, múltiples respuestas

×There is no translation available.En nuestro estudio recién publicado comparamos los niveles de la hormona que regula el nivel de estrés (la corticosterona) en dos especies de anfibios de Centroeuropa que difieren en su grado de susceptibilidad a la quitridiomicosis. Una vez más se pone de manifiesto que la infección conlleva un coste tremendo para los anfibios al final de la metamorfosis.
10 April, 2017

El origen de los hongos letales de los anfibios

×There is no translation available.Desde la identificación de los hongos quitridios como patógenos de anfibios, se han propuesto numerosas hipótesis sobre su origen geográfico. Una nueva investigación recientemente publicada apunta al Sudeste Asiático como origen de estos hongos, contradiciendo la hipótesis anteriormente aceptada de su posible origen sudafricano
05 April, 2017

Una de sal para los anfibios

×There is no translation available.Los anfibios son animales asombrosos que han sido capaces de adaptarse a múltiples condiciones ambientales y salir exitosos a lo largo de la evolución, ¡incluso en ambientes con una mayor concentración de sales, como los manglares!. Conoce el caso del estado de Taumalipas, en México, donde una sencilla actuación por parte de la empresa española Iberdrola ha provocado la recuperación parcial de un humedal clave para la conservación de distintas especies de anfibios, como el sapo excavador mejicano.
27 March, 2017

Una nueva fechoría atribuida al hongo patógeno de anfibios

×There is no translation available.Brasil es el país con mayor biodiversidad de anfibios de planeta, pese a que en los años 80 sus poblaciones de anfibios sufrieron un severo declive poblacional. Ahora, y por primera vez, el análisis de 30.000 renacuajos colectados en todo el país desde 1930, atribuye este declive a la quitridiomicosis.
02 March, 2017

Doble salto mortal para los anfibios

×There is no translation available.La globalización está favoreciendo la dispersión de los nuevos patógenos que comprometen seriamente la supervivencia de los anfibios. En nuestro articulo recientemente publicado analizamos el impacto conjunto de hongos y ranavirus en una comunidad de anfibios de la Serra de Estrela, Portugal
06 February, 2017

El hongo asesino en el bosque atlántico brasileño

×There is no translation available.El primer caso de infección en Brasil fue registrado en el año 2004 en renacuajos de un leptodactílido endémico del Bosque Atlántico, en el sureste del país. En la actualidad ya son casi 160 especies infectadas con seguridad, y el hongo ha sido detectado en cinco de los seis biomas presentes en Brasil.
30 January, 2017

¿Es el cangrejo rojo un medio de transmisión del hongo asesino?

×There is no translation available.El cangrejo rojo americano es una especie exótica invasora que causa graves impactos en los ecosistemas. Actualmente existe un ambicioso proyecto en marcha financiado por la Junta de Andalucía sobre el impacto de esta especie en distintos ámbitos, y nuestro equipo colabora estudiando el posible papel del cangrejo en la dispersión de la quitridiomicois de los anfibios.
27 January, 2017

El director de SOS Anfibios Guadarrama recibe el premio Joaquim Maluquer Nicolau

×There is no translation available.Durante las XVI Jornadas herpetológicas catalanas que tuvieron lugar los días 21, 22 y 23 de octubre en la localidad de Parets del Vallès (Barcelona) nuestro director del proyecto SOS Anfibios Guadarrama, el Dr. Jaime Bosch, recibió el premio Joaquim Maluquer Nicolau de Herpetología por su contribución a la conservación de los anfibios.
23 January, 2017

Premio internacional a la conservación de anfibios en graveras

×There is no translation available.Un equipo español ha ganado el premio internacional Quarry Life Award con una apuesta por la conservación de los anfibios en graveras. Esperamos que estas iniciativas proliferen y valoremos el gran potencial de algunas zonas degradadas para la conservación de nuestros anfibios.
09 January, 2018

¿Nuestros anfibios envenenados por plaguicidas?

×There is no translation available.Existe una creciente desconexión con el medio natural como consecuencia de la despoblación de las zonas rurales. En las ciudades nos encontramos ajenos de la pérdida de diversidad en los agroecosistemas, cuya causa apunta, en parte, al abuso de plaguicidas. ¿Qué consecuencias puede tener su empleo para los anfibios?
05 January, 2017

¿Qué podemos hacer para luchar contra los ranavirus?

×There is no translation available.Como ya comentamos en una entrada anterior, los gestores del Parque Nacional de Picos de Europa nos encargaron un estudio sobre posibles medidas de mitigación de la ranavirosis que está devastando sus anfibios. En este trabajo hemos probado diversos fármacos para el tratamiento de los animales infectados, hemos elaborado material informativo para que los visitantes conozcan esta problemática, y hemos concluido el estudio genético de las poblaciones de sapo partero de cara a futuros programas de reintroducción o refuerzo de las poblaciones afectadas.
19 December, 2016

Manteniendo a raya al hongo asesino

×There is no translation available.Desde la aparición de la quitridiomicosis hemos ido poniendo en marcha algunas medidas para mitigar los efectos de esta enfermedad sobre las poblaciones de anfibios. En nuestro artículo recientemente publicado resumimos las medidas que se utilizan para combatir esta enfermedad.
11 December, 2016

La primavera la quitridiomicosis altera

×There is no translation available.Los anfibios son animales ligados a medios acuáticos que son altamente vulnerables ante el cambio climático. En nuestro artículo recientemente publicado explicamos cómo las fluctuaciones en las fechas de inicio y final de las estaciones afectan a la susceptibilidad de los anfibios a la quitridiomicosis.
08 September, 2016

Un desarrollo rápido puede salvarte la vida

×There is no translation available.Aunque la genética del hongo causante de la quitridiomicosis está muy estudiada, hasta ahora, nadie había estudiado la base genética de la infección en los hospedadores. Sin embargo, es justo este conocimiento el que permite evaluar el potencial adaptativo de una especie a esta terrible enfermedad. En nuestra última publicación científica analizamos la arquitectura genética cuantitativa asociada a la infección de hongos en la población de sapo común de Peñalara, y ¡hay sorpresas alentadoras!
22 August, 2016

¿Por qué la intensidad de la infección del hongo quitridio varía tanto entre sitios?

×There is no translation available.Responder a esta pregunta es complicado. Son muchos los factores ambientales que pueden estar implicados en este sistema hospedador-patógeno. En nuestro artículo recién publicado en la revista Proceedings of the Royal Society B logramos cuantificar el papel de factores como la radiación UV, el zooplancton y la diversidad y estadio de desarrollo de los anfibios.
19 August, 2016

Continúa nuestro proyecto internacional en Peñalara y nos visita el Dr. Andy Fenton

×There is no translation available.El nuevo proyecto que tenemos en marcha, junto con investigadores de Reino Unido, requiere muestreos intensivos en Peñalara. Este trabajo nos va a permitir aplicar un nuevo enfoque matemático para comprender mejor la dinámica de la enfermedad. Hace unos días, tuvimos la visita del Investigador Principal del proyecto, el Dr. Andy Fenton de la Universidad de Liverpool, que ha desarrollado este nuevo modelo matemático.
04 August, 2016

¿La fotografía como vector de transmisión de enfermedades?

×There is no translation available.Son muchos los que, fascinados por la naturaleza y los animales, recorren diferentes hábitats en busca de alguna especie en particular para conseguir la mejor instantánea. Sin embargo, y aunque actuemos con respeto y amor a la naturaleza, debemos conocer los riesgos asociados a esta actividad, y no convertirnos en involuntarios vectores de transmisión de patógenos con consecuencias devastadoras para la fauna. Sigue leyendo para aprender a evitarlo.
27 May, 2016

Casi 3 décadas después… ¡Resucitó!

×There is no translation available.Un equipo de científicos del Centro Jambatu de la Fundación Otonga e IKIAM han encontrado vivo el jambato negro (Atelopus ignescens), un anfibio emblemático de las montañas de Ecuador que se consideraba extinto desde finales de los 80. Sin duda un esperanzador descubrimiento que puede tener grandes implicaciones para la conservación de los anfibios.
17 May, 2016

La Alhambra: un hogar para anfibios

×There is no translation available.Hemos visitado el proyecto de recuperación de los anfibios de la Alhambra. Una labor ejemplar, que demuestra cómo con actuaciones sencillas podemos ayudar mucho a estos animales, compaginando el uso humano con la conservación de la biodiversidad.
04 May, 2016

¿Qué está pasando con el ozono?

×There is no translation available.El ozono troposférico, cuando se eleva por encima del fondo natural debido a las emisiones causadas por la actividad humana, constituye un problema importante de contaminación atmosférica que afecta de forma crónica a gran parte de la península Ibérica. Las zonas de montañas son especialmente vulnerables a este contaminante por los elevados niveles que registran actualmente y la vulnerabilidad de sus ecosistemas. Aunque se conocen los efectos negativos del ozono en las comunidades vegetales y en la salud humana, se desconoce sus efectos sobre poblaciones animales silvestres, por lo que hemos puesto en marcha un experimento…
13 April, 2016

XIV Congreso Luso-Español de Herpetología

×There is no translation available.Ya está abierto el plazo de inscripción para el congreso hispanoportugués de herpetología que tendrá lugar en Lérida del 5 al 8 de octubre. ¡Aprovecha esta oportunidad para aprender más y conocer a otros apasionados de la herpetología!
01 April, 2016

El hongo asesino de salamandras se expande

×There is no translation available.Un reciente estudio muestra que Batrachochytrium salamandrivorans se encuentra en nuevas localidades e infectando a nuevas especies en Europa. Otra evidencia más de la amenaza que su-pone este patógeno emergente para nuestra biodiversidad.
23 March, 2016

Otra batalla ganada

×There is no translation available.Cuando de manera totalmente inexplicable en 2013 el hongo asesino de anfibios fue retirado del catálogo español de especies exóticas invasoras, varios colectivos conservacionistas y científicos elaboraron un recurso solicitando la inclusión de esta y de otras especies peligrosas. Ahora, una sentencia del Tribunal Supremo ordena que el hongo vuelva a incluirse en el catálogo.
21 March, 2016

Peñalara, The Stage for a New International Project

Chytridiomycosis has become one of the biggest threats to global biodiversity. Understanding more about how the disease dynamic changes depending on the response of different amphibian species is vital in fighting against it, and Peñalara offers ideal conditions for these studies. Therefore, we have begun a project with a new approach towards finding this information, in which we will work with diverse investigators from the United Kingdom.
11 March, 2016

Anfibios, reptiles y voluntarios en Parques Nacionales

×There is no translation available.El Programa de Voluntariado de Parques Nacionales incluye actuaciones de seguimiento de anfibios y reptiles en algunos parques que coordina la Asociación Herpetológica Española (AHE). Sigue leyendo para conocer la importancia del voluntariado, los resultados obtenidos y cómo puedes participar.
04 March, 2016

Alpine newts in Guadarrama and other outsiders

The last number of the Asociación Herpetológica Española (AHE) - Spanish Herpetological Association-bulletin deals in a monographic way about the amphibians’ and retiles’ species introduced in Spain. In this number we tell you about the alpine newt history in Sierra de Guadarrama. Another example of an interesting specie that was introduced irresponsibly outside its natural range and that could unchain incalculable damages in the unique Peñalara’s ecosystem.
26 February, 2016

Amphibians As Pets To Fight Zika Virus? Bad Idea!

In the face of the Zika virus epidemic, the sales of amphibians as pets have skyrocketed in an apparent attempt to destroy the mosquitos that carry the sickness. However, far from being a good idea, this actually has huge risks for biodiversity.
22 February, 2016

The sun comes up for everyone…but no all the amphibians response the same way to illnesses.

In our paper, recently published in Diseases of Aquatic Organisms magazine, we explained the amplifying role that chitridiomycosis has in midwife toads in Peñalara and how the different amphibian’s species response to the pathogenic in different ways affecting the disease dynamic. Understanding these processes is essential to design mitigation activities, that is our final goal.
12 February, 2016

Europe Concerned About a New Threat

An official recommendation from the Bern Convention urges member countries to prevent the spread of Batrachochytrium salamandrivorans, a new amphibian fungal pathogen that has caused declines of 96% in salamander populations in the Netherlands. Restrictions in the pet trade and improvements in surveillance are considered necessary.
05 February, 2016

Class on Amphibian Population Monitoring

From April 18th through the 20th, the class “Knowledge and Tools for Monitoring Amphibian Populations,” organized by the Autonomous National Parks Agency (Ministry of Agriculture, Food, and Environment), will take place at the National Center for Environmental Education (CENEAM).
29 January, 2016

Biologist’s Best Friend

Training dogs to detect wildlife is becoming common worldwide as an effective, minimally invasive, technique in the investigation and conservation of biodiversity. Find out how man’s best friend can help us conserve amphibians.
22 January, 2016

New Laws for Protecting Salamanders in the USA

In the United States, the international importation of more than 200 species of newts and salamanders has been banned to prevent the introduction of the new killer fungus Batrachochytrium salamandrivorans. Without a doubt, this is a big step for the conservation of the enormous diversity of amphibians in the country.
15 January, 2016

New Facilities for Our Midwife Toads

We have a new outdoor breeding facility for our colony of captive midwife toads. This outdoor enclosure, which is much larger than the previous one, will help drive this species’ reintroduction program at the National Park.
07 January, 2016

Overwintering Larvae: An opportunity for the fungus

In our recently published article we talk about the existence of hibernating salamanders' larvae in Peñalara that benefits the persistence of the pathogenic fungus.  This work has been key to design the mitigation strategy that we are performing in the project.
23 December, 2015

What do amphibians give us, and what do we lose without them?

Nature offers humanity environmental services that allow for our survival and wellbeing. With the decline of amphibians, we are losing many of these environmental services. Continue reading to learn what these environmental services are.
14 December, 2015

Protected areas: vital for the conservation of amphibians

A recent study about the conservation of amphibians and protected areas throughout the world highlights the necessity to protect more territory in order to ensure the conservation of these animals.
31 August, 2015

A new threat: the salamander killer fungus

A new species of chytrid fungus from Asia has already devastated common salamander populations in Holland and Belgium. Its expansion from Europe or to other continents would suppose an unprecedented disaster for the amphibians.  We can still prevent its expansion, but the commerce of exotic animals is a very big risk for our amphibians.
24 August, 2015

A difficult summer for the amphibians

The past moths of June and July have been the hottest of history since records exist. Due to these unusual temperatures, the amphibians have difficulties to reproduce, because a lot of ponds are getting dry faster than ever.
09 December, 2015

Help us track down affected amphibian populations

In the face of the growing threat from new amphibian pathogens, we citizens can do much to report on new infectious outbreaks. If you encounter dead amphibians, or with symptoms of evident illness, inform us! In this entry we will tell you how.
04 December, 2015

Is it better to be alone than in bad company?

Is there any association between the hosts’ density and the amphibians’ fungal infection intensity? We are doing an interesting experiment to answer this question.
27 November, 2015

Knowing the enemy

To prevent its expansion and to develop methods that can eliminate the chytridiomycosis, it is crucial to know the biology of the fungi that produces it. In this article we give some details of the biology of the two chytrid fungi species that affect amphibians.
20 November, 2015

Eliminating fungi from the environment is possible!

In our recently published Biology Letters journal article, we described the first successful attempt in the world to eradicate fungi from the environment. We managed it on the island of Mallorca, with the collaboration of the Balearic Government’s Ministry of Environment, and our goal was to save the Majorcan/Balearic midwife toad (or ferreret in Catalan).
12 November, 2015

The threat spreads to Andalusia

Our latest analyses indicate that chytridiomycosis is expanding vertiginously throughout the range of the Betic midwife toad, a species endemic to the southeast peninsula whose conversation is now in grave danger.
04 November, 2015

Luminescent Bacteria

Continuing with the efforts of Dr. Leyla Davis to combat bacterial fungi, we have been advancing the development of this project with some interesting discoveries.
29 October, 2015

The captive toads will not be cold

With the drop in mountain temperatures, the moment has arrived to house our breeding midwife toads in a heated room. Although in nature these animals can tolerate low temperatures during the winter, we have found that it is not necessary for them to stay outside in the cold when they can breed in captivity.
23 October, 2015

Free Sally

Some of the hundreds of salamanders that we have in the breeding center have completed their metamorphosis and are clean of pathogenic fungi. Therefore, we can return these precious metamorphosed animals to their places of origin.
16 October, 2015

National Park Scientific Congress

Next week the first Sierra de Guadarrama National Park scientific congress will take place in Miraflores de la Sierra. We will participate to summarize 17 years of applied conservation research about amphibian populations in the park.
09 October, 2015

A Note of Color: Marking Tadpoles with Elastomers

To partake in the study and conservation of wildlife, sometimes it is necessary to identify individuals. Even though amphibians are not easy animals to identify individually, there exist various techniques that are suitable for marking almost all species and their states of development.  In the case of tadpoles, one of the most used techniques is the implantation of elastomers.
02 October, 2015

Seminar on Amphibian Monitoring in National Parks

This year the annual seminar about long-term monitoring in the National Parks Network was focused on amphibians. We participated in this conference, which we hope will serve to improve the conservation of these animals in our protected spaces.
25 September, 2015

Hospital de salamandras

×There is no translation available.Mark Wass, nuestro veterinario del equipo SOS Anfibios, ha comenzado el experimento para poner a punto un tratamiento contra la quitridiomicosis en larvas de salamandra. Como ya os contamos en otra entrada del blog, estamos tratando de limpiar la infección de estas larvas para reducir, o incluso eliminar, la carga infecciosa en las lagunas permanentes de Peñalara.
18 September, 2015

The nights of the one thousand and one salamanders

As a part of our new strategy of mitigating the chytriodiomycosis, that we can conduct thanks to the SOS Amphibians project, we have spent many night sessions capturing one by one the salamanders’ larvae in Peñalara.  This enormous work has been possible thanks to the effort of our volunteers.
09 September, 2015

SOS Anfibios in TVE

The TV show “Aquí en la Tierra” has broadcasted a short documentary about the recovery plan of the Iberian frog in Peñalara. We would like to give thanks to the TV show for helping us to spread the importance of preserving the amphibians in Sierra de Guadarrama.
21 August, 2015

Tracking in Peñalara

Some of the most abundant and best conserved amphibian populations of the peninsula can be found in Peñalara. Nevertheless, the chytridiomycosis, the introduced species and the global warming have produced changes in the community that we have been tracking very closely during the last 15 years.
14 August, 2015

We have a new home for the midwife toad!

This week we have taken a big step in the reintroduction plan of midwife toads in the National Park. Finally we have started releasing toads in the new sites.
05 August, 2015

Amphibians: Initiatives for their preservation

Even though it has arrived with a little bit of delay, you can now download in Guadarrama National Park's website the book about the VII Scientific Conferences of Peñalara Natural Park held in 2009. In this publication you can find information about different programs and amphibians preservation strategies of our country and so, we think that you’ll be interested.
29 July, 2015

Getting started with the experiment to fight the fungus with symbiotic microbes

Last week we started the experiment of one of our team members, Leyla Davis, to attempt to mitigate the mortality effects of the Bd fungus with symbiotic bacteria. It was a bit strenuous, but also good fun. Read on and check-out out an entertaining video of the SOS Amphibian team in action.
24 July, 2015

8 years of SARE (Tracking of Amphibians and Reptiles of Spain) thanks to the Spanish Herpetological Association

In the special bulletin of AHE (the Spanish Herpetological Association), dedicated to the Tracking Program of Amphibians and Reptiles of Spain, you can get all the details about how to take part and to know how important this initiative is to preserve the amphibians and reptiles of our country.  We all have to take part, if you want to do something for our herpetofauna, use this opportunity to act upon!
19 July, 2015

Doctor Karen Lips visits us

The professor of Maryland University (USA) specialized in the preservation of amphibians visited us this week and we had the pleasure of showing her some of our amphibian fauna.  The work of Doctor Karen Lips has been key to document the devastation caused by the chytridiomycosis in Central America and to understand how the pathogenic fungus spread out in this part of the world. Nowadays Doctor Lips is working in the Appalachians, where you can find the biggest diversity of salamanders of the world and where they are, sadly, disappearing mysteriously.
17 July, 2015

When the small fish eats the smallest

We have just visited the National Park of Aigüestortes in order to know about the LIFE LimnoPirineus project, a very interesting initiative with the aim of improving the aquatic habitats in benefit of our amphibians.  These habitats are of European interest and are located in the tall mountain of the Pyrenees.
10 July, 2015

One, two, three, hide-and-seek!

Who has not played the children’s game of hide-and-seek? The larvae of the Iberian frog are able to detect the 'smell' of trout in the water and when they do so, they remain still in order to avoid being preyed upon by them. Do you think that this fascinating behaviour is innate, or learnt after contact with these predators?
07 July, 2015

Can toads and sheep get along?

One species of amphibian exclusive to the southeast of the peninsular (the Betic Midwife Toad) and traditional livestock have coexisted for centuries, but this delicate balance could be broken if we don’t do something soon.
05 July, 2015

SOS laboratory Amphibians

Much of our work takes place in the laboratory analysing samples of amphibians to determine if they are infected by the fungal pathogen, and to what extent. To do this, we use a complex and expensive technique: Real-time PCR.
24 June, 2015

El esperado reencuentro del verano

×There is no translation available.Hemos puesto en marcha la segunda campaña de seguimiento de rana patilarga a lo largo del Parque Nacional. Sigue leyendo para conocer los detalles de este plan de seguimiento, y de nuestro primer encuentro con una rana marcada el año pasado.
20 June, 2015

In search of a new home for the Common Midwife Toad

We are touring the National Park in search of new places to reintroduce Common Midwife Toads. This task is not easy because while the sites should be suitable for the toads they should be unfavourable for the development of chytridiomycosis. We will tell you how we are approaching this ambitious task.
18 June, 2015

The return of Iberian Frog

Last week we were reintroducing Iberian frog tadpoles in the stream of Dos Hermanas, where the species disappeared due to the introduction of fish. Read on for the story of how we recovered the habitat for this amphibian and the steps we are taking to establish new populations.
11 June, 2015

Are the toads cold in Peñalara?

A year ago we placed small devices that automatically record temperature under the skin of several common toads in Peñalara. We have just finished recapturing these toads and to our surprise we found that they endure low temperatures for much of the year!
09 June, 2015

See the world through the eyes of a tadpole

The metamorphosis of amphibians is one of the strangest processes in the animal world. Breeding these animals requires care at all stages of development. Read on for details of this process and to see the world as our Common Midwife Toad larvae see it.
05 June, 2015

A frog that moves to the mountaintop

Our beloved Guadarrama Mountains have been warming in recent decades. The Iberian tree frog is one of the species whose distribution is changing, adapting to these changing temperatures. In the Peñalara Massif we have witnessed how this species has been climbing to higher altitudes.
02 June, 2015

Dr. Davis and her friendly bacteria

Dr. Leyla Davis of the University of Zurich, joins our team to test new treatments using symbiotic bacteria that could help our amphibians combat the fungal pathogen. Read on for her first impressions in Peñalara.
29 May, 2015

Fighting against Ranaviruses in the Picos of Europe

We recently visited the Picos of Europe National Park, starting a new conservation project to try to alleviate the serious effects of another big group of pathogens that threatens amphibians worldwide: ranaviruses.
28 May, 2015

We are taking part in a series of lectures about the National Park at the National Museum of Natural History

On June 2nd at 19:00 Jaime Bosch, chief investigator, SOS Amphibians Guadarrama, will give a lecture on the Conservation of Amphibians of the Guadarrama Mountains.
24 May, 2015

Recovering the European Pond Turtle

In Hungary we learnt about several herpetofauna conservation initiatives. On this occasion, we talk about another endangered species recovery program: the European Pond Turtle (Emys orbicularis).
22 May, 2015

Releasing Vipers from helicopters

During our trip to Hungary we had the opportunity to see the magnificent Hungarian Meadow viper conservation project. This Life project includes the restoration of grasslands that are the habitat of these threatened reptiles and reintroducing captive-bred individuals.
20 May, 2015

Interview with DiCYT

The Ibero-American Agency for the Dissemination of Science and Technology (DiCYT) has published a report about our project on their website.
18 May, 2015

The breeding season of the Common toad is in full

Right now we are busy with tracking the population of the Common toad (Bufo spinosus) in the Peñalara Massif. This year, the extraordinary and sudden rise in temperature in May has accelerated the breeding season of these amphibians, compared to other years.
13 May, 2015

In search of the Fire-bellied toad

Last week we travelled to Hungary with Drs Judith Vörös and Caitlin Gabor to start an experiment investigating the dynamics of infection caused by the pathogenic fungus in two interesting amphibians of that area of Europe: Bombina bombina and Bombina variegata.
08 May, 2015

The project technician joins the team

At last we have the project technician on our team. Celia Serrano has a degree in Biology, master's in Restoration of Ecosystems and has experience working in amphibian conservation. Her participation within the team is a major boost for the project.
06 May, 2015

Chytridiomycosis and Stress in amphibians

Our recently published article in the journal PLoS ONE shows various relationships between infection by the pathogenic fungus and cortisol levels of Common Midwife toads. Cortisol is a hormone that is related to the degree of stress, and has important repercussions on a physiological level.
04 May, 2015

A new student joins SOS Amphibians

Camino Monsalve, a student of Biology at the Autonomous University of Madrid, will undertake his final year project which will analyse the inter-annual variation of infectious load of the Chytrid fungus in adult Common toads.
28 April, 2015

A relative in the south

Last week we visited the Natural Park of the Cazorla, Segura and Las Villas mountain ranges, in the Jaen province, in order to check the progress of infection by the fungus Batrachochytrium dendrobatidis in populations of the Betic Midwife toad, a relation of the Common Midwife toad which is endemic in the southeast of the peninsular.
24 April, 2015

Cristina Sausor, a new member of the team

Cristina holds a degree in biology and a master's degree in ethology, and will assist in the maintenance of the Breeding Centre. Cristina is going to undertake an interesting study with the objective of breeding the Iberian frog (Rana iberica) in captivity, a vulnerable species in the National Park.
22 April, 2015

Presentation of the Project at the University of Salamanca

The Bellotero Students Collective have been so kind to invite us to their Conference on Biodiversity Conservation.
17 April, 2015

A relative in Majorca

This week we visited the island of Majorca to continue efforts to eliminate the pathogenic fungus that compromises the survival of the Majorcan Midwife Toad, a toad species endemic to the Balearic Islands. Our experience in Majorca shows it is possible to eliminate the fungus in the environment and has encouraged us to undertake this project in the Guadarrama Mountains.
15 April, 2015

In spring, we go outdoors

After the long winter inside the Breeding Centre, we have transferred the most developed Common Midwife Toad specimens to our outdoor installation, where they will spend the spring and summer. Like every year, the breeding season begins, and we hope that these individuals reproduce and lead to a new generation of toads which continue strengthening their population in the National Park.
09 April, 2015

Small predators

We would like to introduce you to the main characters of this project: the Common Midwife toads. In this video you can see some of the toads from the Centre for Captive Breeding of Threatened Amphibians of the Guadarrama Mountains. By watching these animals hunt, we are reminded of their crucial role in ecosystems and their importance in controlling insect populations.
30 March, 2015

Temperature: the key factor for the development chytridiomycosis

Our article, recently published in the journal PLoS ONE, describes how low water temperature, only two days prior to sampling is the best predictor of the burden of the fungus Batrachochytrium dendrobatidis on the larval stages of the Common Midwife Toad. Until now, no study had been monitoring the pathogen burden in amphibian larvae over a year, relating it to the water temperature. Possibly, the low water temperatures cause a decline of the immune system of the larvae, thus increasing their susceptibility to pathogenic fungus.
28 March, 2015

Fulfilling the role of the Common Midwife Toad father

The males of the Common Midwife Toad carry the clutch of eggs on their hind legs for several weeks after laying, to deposit them into the water when they are ready to hatch. Unfortunately inexperienced males often lose the clutch, and the eggs die within a few days after being invaded by fungi and other microorganisms from the environment, as they do not have the skin defences of the father. By means of an experiment, we are testing different methods to successfully develop the clutch of the Common Midwife Toad, without the help of the male.
26 March, 2015

The Centre for Captive Breeding of Threatened Amphibians of Guadarrama Mountains

The Captive Breeding Centre for Threatened Amphibians of Guadarrama Mountains, located at the Research, Monitoring and Evaluation Centre of the National Park of Guadarrama Mountains in Rascafría, was opened in 2008. Since then we have bred hundreds of Common Midwife Toads (Alytes obstetricans) in captivity which have been released in Peñalara Massif. With this project we will expand and improve the facilities of the centre, increasing the number of individuals born in captivity with a view to creating new populations of Alytes obstetricans in the National Park.

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