993 resultados para Primera comunion


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La lapa majorera (Patella candei) es un gasterópodo marino, endémico de laMacaronesia, con poblaciones restringidas a las islas Salvajes y Fuerteventura. Es precisamente su reducida área de distribución, el bajo número de efectivos poblacionales y la existencia de factores de riesgo y amenaza sobre la especie, lo que llevó a la Comunidad Autónoma de Canarias a proponer su inclusión en el Catálogo Nacional de Especies Amenazadas y, posteriormente en el Catálogo de Especies Amenazadas de Canarias, en la categoría denominada en peligro de extinción.

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[EN]Effects of first feeding on survival and growth of Atlantic seahorse juveniles, Hippocampus hippocampus, (Linnaeus, 1758). In this study, two experimental protocols were tested: a first treatment (RA), in which larvae were fed exclusively on rotifers until day 5, and then on Artemia, and a second treatment (A) where larvae were only fed on Artemia. We attempted to improve survival and growth by comparing different diets in the first days of life. The results showed excellent survival (60% average) and growth in juveniles exclusively fed with Artemia, with better values than those obtained by other authors for this species. In comparison, high mortality and poor growth were observed on the first days in larvae fed rotifers.