The Centre for Captive Breeding of Threatened Amphibians of Guadarrama Mountains

The Captive Breeding Centre for Threatened Amphibians of Guadarrama Mountains was established by our research team and the Ministry of Environment of the Community of Madrid in response to the outbreak of chytridiomycosis in 1997 that decimated amphibian populations in Peñalara Massif. The captive breeding of endangered species is a costly undertaking that is only advisable for stocks or species in serious danger or where the threat factor(s) cannot be controlled in the natural environment in the short term.

Larva roomBefore the possibility that the Common Midwife Toad disappeared completely from Peñalara Massif, and the impossibility of eliminating the pathogenic fungus that causes chytridiomycosis, we launched the Breeding Centre in order to:

(1) maintain a captive population of Common Midwife Toads (Alytes obstetricans) in Peñalara;
(2) have a source of specimens of the Common Midwife Toad for subsequent reintroductions into the wild and;
(3) provide specimens in order to develop methods for mitigation of disease.

During the design of the Breeding Centre we incorporated the advice of Durrell Wildlife Conservation Trust, which developed a captive breeding program for the Mallorcan Midwife Toad (Alytes muletensis) at Jersey Zoo (Durrell Wildlife Park).

outdoor

The larvae are grown at the Breeding Centre in a room which contains forty 80-litre tanks, where they are kept until metamorphosis. In this room the temperature is kept low throughout the year (less than 18°C) to prolong larval development as much as possible, and thus generate large metamorphic individuals that are easier to feed. By contrast, the adults are maintained at an elevated temperature (21°C) that accelerates the growth of the animals and prevents the development of chytridiomycosis. Here the specimens are maintained in containers of about 20 individuals, until they reach a certain size, at which point they are transferred to individual containers. Both rooms feature UV lamps that allows the binding of calcium. Another room maintained at 30°C, houses a colony of crickets which are a live food source, crucial for the amphibians of the centre. On the grounds of the centre there is an area where reproductive adults spend time in the spring and summer.

back to top

logo FBBVA

logo mncn

logo CSIC

Information cookies

Cookies are short reports that are sent and stored on the hard drive of the user's computer through your browser when it connects to a web. Cookies can be used to collect and store user data while connected to provide you the requested services and sometimes tend not to keep. Cookies can be themselves or others.

There are several types of cookies:

  • Technical cookies that facilitate user navigation and use of the various options or services offered by the web as identify the session, allow access to certain areas, facilitate orders, purchases, filling out forms, registration, security, facilitating functionalities (videos, social networks, etc..).
  • Customization cookies that allow users to access services according to their preferences (language, browser, configuration, etc..).
  • Analytical cookies which allow anonymous analysis of the behavior of web users and allow to measure user activity and develop navigation profiles in order to improve the websites.

So when you access our website, in compliance with Article 22 of Law 34/2002 of the Information Society Services, in the analytical cookies treatment, we have requested your consent to their use. All of this is to improve our services. We use Google Analytics to collect anonymous statistical information such as the number of visitors to our site. Cookies added by Google Analytics are governed by the privacy policies of Google Analytics. If you want you can disable cookies from Google Analytics.

However, please note that you can enable or disable cookies by following the instructions of your browser.