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Accumulation of pollutants in the brains of dolphins

This study shows that halogenated flame retardants, both banned PBDEs and their substitutes, are able to cross the blood–brain barrier of cetaceans and penetrating the brain. The study also examined the presence of halogenated natural products produced by algae and sponges. All of these compounds have been found in the brains of analyzed dolphins, confirming that they are able to cross the brain-blood barrier.

The native crayfish is a non-native species

Anciently introduced species can be confounded with native species because introduction pre-dates the first species inventories or because of the loss of the collective memory of the introductions. Here, an integrative, multidisciplinary approach was followed to solve the status of a cryptogenic species, proposing that building on evidence from multiple disciplines can produce robust and clarifying insights.

Nest choice after migration in Mediterranean storm petrels

Petrels are highly philopatric and return from migratory journeys of thousands of kilometres to breed in the same burrow year after year. During the breeding season, some burrowing petrel species rely on their sense of smell to locate their nest at night, but the mechanisms involved in the homing behaviour after several months at sea are virtually unknown. To understand whether the sense of smell is involved in nest finding at the return from migration and to study the interplay with other...

Spatial segregation important mechanism for reducing competition in petrels

Según la teoría del nicho ecológico, existen mecanismos que permiten la coexistencia de los organismos que de otro modo competirían por las mismas presas y otros recursos. Cómo las aves marinas de pequeño tamaño compiten por los recursos en la época no reproductiva había sido poco estudiado hasta ahora. Por primera vez se aborda papel potencial de la segregación espacial, medioambiental (cambio de hábitat) y trófica (cambios isotópicos) en la partición del nicho ecológico de cuatro aves...

GPS tracking for mapping seabird mortality induced by light pollution

La contaminación lumínica es una fuente de mortalidad para los petreles. En sus primeros vuelos entre sus nidos y el mar, los pollos se desorientan por las luces, lo que provoca una gran mortalidad. La mayor parte de nuestro conocimiento sobre este fenómeno viene de las campañas de rescate, y principalmente consiste en las especies y los números. Por desgracia, las campañas de rescate no pueden identificar el origen de las aves afectadas por las luces, lo cual es una información valiosa para...