11 research outputs found

    Revista de Vertebrados de la Estación Biológica de Doñana

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    PĂĄgina 298 con error de impresiĂłnEstudio cariolĂłgico en dos especies de SerrĂĄnidos del MediterrĂĄneo (Peces: PerciformesRelaciones morfomĂ©tricas de Atherina boyeri Risso (Pisces: Atherinidae) de la laguna de Zoñar (CĂłrdoba, España)ContribuciĂłn al conocimiento de la biometrĂ­ay osteologĂ­a de Barbus barbus bocagei, Steindachner, 1866 (Pisces: CyprinidaeLa actividad de la salamandra, Salamandra salamandra (L.), en Galicia.Estudios sobre el sapo corredor (Bufo calamita) en el Sur de España.1. BiometrĂ­aEstudios sobre el sapo corredor (Bufo calamita) en el Sur de España. II. AlimentaciĂłnBiologĂ­a de la reproducciĂłn de Rana iberica Boulenger 1879 en zonas simpĂĄtridas con Rana temporaria Linneo, 1758Nuevos datos sobre la distribuciĂłn geogrĂĄfica de Lacerta monticola cantabrica Mertens, 1929. (Sauria, lacertidae).Datos sobre Lacerta monticola Boulenger, 1905 (Saurio: lacertidae)en el oeste del Sistema Central.Nueva especie de Anolis (lacertilia, Iguanidae) para CubaEtograma cuantificado del cortejo en Falco naumannOntogĂ©nesis del comportamiento predador en Falco naumanniContaminaciĂłn xenobiĂłtica del Parque Nacional de Doñana. 1. Residuos de insecticidas organoclorados, bifenilos policlorados y mercurio en anseriformes y gruiformesReproducciĂłn del crĂ­alo (Clamator glandarius) en Sierra Morena CentraNidificaciĂłn de Picus viridis en taludes de arcilla en Ramblas de Guadix (Granada)Comportamiento del calamĂłn Porphyrio porphyrio (Linnaeus, 1758) en Doñana, Marismas del GuadalquiviBiologĂ­a y ecologĂ­a de la malvasĂ­a (Oxyura leucocephala) en AndalucĂ­a.On the differential diet of Carnivora in islands:a method for analysing it and a particular case.Notas sobre la distribuciĂłn pasada y actual del meloncillo Herpestes ichneumon (L.) en la PenĂ­nsula IbĂ©ricaEstructuraciĂłn de las interacciones en una camada de lobos (CanĂ­s lupus)Nuevos datos sobre la distribuciĂłn del Cottus gobio L. (pisces, cottidae) en EspañaSobre la alimentaciĂłn de Callopistes maculatus (Reptilia,teiidaeObservaciĂłn de Lacerta lepida depredando un nido de Alectoris rufaNueva cita del galĂĄpago leproso Mauremys leprosa (Scheigger, 1812) en los pirineosPrimera cita de Psammodromus hispanicus (Fitzinger) para GaliciaSobre la presencia de Gallotia (=Lacerta) atlantica (Peters y Doria, 1882) en Gran CanariaNota sobre las Lacerta monticola Boulenger, 1905 de las zonas del norte de GaliciaPrimeras notas herpetolĂłgicas de la provincia de Soria.Datos sobre selecciĂłn de hĂĄbitat y ecologĂ­a alimenticia del porrĂłn pardo (Aythya nyroca)Probable nueva ĂĄrea de crĂ­a del pechiazul (Luscinia svecica cyanecula) en el sistema central. PerisPredaciĂłn de Falco peregrinus y Falco subbuteo sobre quirĂłpterosResultados de la producciĂłn de Oxyura leucocephala en el año 1981 en las lagunas de Zóñar y el rincĂłnAnĂĄlisis de la dieta de Tyto alba en un medio ĂĄrido antropĂłgeno de los alrededores de AlmerĂ­aÂżSon Eudocimus ruber y E. albus distintas especies?EL Estornino pinto (Sturnus vulgaris) en Canarias: nueva especie nidifiante en el archipiĂ©lagoDatos sobre la alimentaciĂłn otoñal del cĂĄrabo (Strix aluco) en la sierra de CĂĄdizObservaciĂłn primaveral de rapaces y otras aves en el pĂĄramo del estado de MĂ©rida (Venezuela).MurciĂ©lago hematĂłfago (Desmodus rotundus) parasitando a un chigĂŒire (Hidrochoerus hydrochaeris)Observaciones sobre la reproducciĂłn del zacatuche o teporinho Romerolagus diazi (Mammalia: lagomorpha)Estudio electroforĂ©tico de hemoglobinas y esterasas sanguĂ­neas en Rhinolophus ferrumequinum (Chiroptera: rhinolophidae) y de hemoglobinas en Tadaria taeniotis (chiroptera: molossidae)Peer reviewe

    Un Nou discoglĂČssid "(Amphibia: Anura)" de l'HolocĂš de Menorca

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    Some fossil remains of a new discolglossid species, Baleaphryne talaioticus, from the Holocene site Rafal Rubi (Minorca), are described in this article. This species is quite similar to the only other known in the genus (B. Muletensis, from Majorca). The B. Talaioticus humeri are somewhat shorter and more robust than those of B. Muletensis, representing this incipient digging adaptation either a parallel trend with respect to the Alytes one, or else an evolutionary reversal in Baleaphryne towards less specialized morphologies. Other Minorcan remains from the 11 Century b.C. are referred to B. Talaioticus, suggesting that the species might still be alive.Se describen los restos de una nueva especie de discoglĂłsido, Baleaphryne talaioticus, procedente del yacimiento holocĂ©nico de Rafal RubĂ­ (Menorca), forma muy similar a la Ășnica otra conocida del gĂ©nero (B. Muletensis, de Mallorca). Los hĂșmeros de B. Talaioticus son algo mĂĄs cortos y robustos que los de B. Muletensis, representando esta incipiente adaptaciĂłn cavadora bien un paralelismo con respecto a la tendencia de Alytes, o bien una reversiĂłn evolutiva de Baleaphryne hacia morfologias menos especializadas. Se atribuyen restos menorquines del siglo II aC a B. Talaioticus, lo que sugiere que esta especie pueda no haberse extinguido

    Chronology and causes of the extinction of the Lava Mouse, Malpaisomys insularis (Rodentia: Muridae) from the Canary Islands

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    Understanding late Holocene extinctions on islands requires accurate chronologies for all relevant events, including multiple colonisations by humans and the introduction of alien species. The most widely held hypothesis on the causes of Holocene island vertebrate extinctions incorporates human impacts, although climatic-related hypotheses cannot be excluded. Both hypotheses have been suggested to account for the extinction of the endemic Lava Mouse, Malpaisomys insularis from the Canary Islands. Here we present the first accelerator mass spectrometer (AMS) 14C ages from collagen of M. insularis bones from ancient owl pellets collected at Fuerteventura (Canary Islands, eastern Atlantic Ocean). These new dates contribute to an understanding of the extinction of this species. We are able to exclude climatic causes, predation by invasive species, and competition with the house mouse, Mus musculus. The arrival of Europeans in the Canary Islands correlates with the extinction of Malpaisomys. The introduction of rats, Rattus spp., together with their parasites and diseases, emerges as the most reasonable hypothesis explaining the extinction of M. insularis. © 2008 University of Washington.Peer Reviewe

    A reappraisal of the stratigraphy of Cueva del Llano (Fuerteventura) and the chronology of the introduction of the house mouse (Mus musculus) into the Canary Islands

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    Major ecological changes related to anthropogenic activities begin on islands with initial human settlement. Key factors to understanding insular Holocene ecological changes are the arrival dates of both humans and alien species to the islands. In this context, finely stratified fossil sites are powerful tools to study the chronology and causes of these changes. Previous work, based on conventional 14C ages of land snails coming from the finely stratified site Cueva del Llano at Fuerteventura (Canary Islands, eastern Atlantic Ocean), indicates that one of the major ecological changes that took place in this archipelago-the arrival of house mouse Mus musculus-occurred around 7000 yrs ago, thus before the first arrival of humans to the islands. To extend these studies, we obtained 14C ages by accelerator mass spectrometer (AMS) directly on bone collagen from selected bones of rodents: lava mouse Malpaisomys insularis and house mouse, from seven sites: Cueva del Llano, Cueva de Villaverde and Malpaís de La Arena I & II (Fuerteventura), El Bebedero and Jameo de la Puerta Falsa (Lanzarote), and Barranco de la Baranda (La Palma). The new ages derived from the upper levels of Cueva del Llano (CLL 9.1-9.2) indicate a very young age for these materials, between 1667-1949 and 1261-1391 cal AD. These results support a more recent and very different chronology for the Holocene ecological changes that occurred on these islands compared to previous studies. Explanations for the stratigraphically anomalous age shown in previous papers are put forward. On the other hand, the available 14C ages indicate that the house mouse arrived on the eastern Canary Islands some time between 756 cal BC-313 cal AD and, probably from there, spread to the other islands before European contact. © 2009 Elsevier B.V. All rights reserved.Peer Reviewe

    C. Literaturwissenschaft.

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