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Banon R.,Grupo de Estudos do Medio Marino GEMM | Mano T.,FARO | Mucientes G.,Grupo de Estudos do Medio Marino GEMM
Journal of Fish Biology | Year: 2016

The anomalous presence of numerous blue shark Prionace glauca neonates and juveniles in shallow inshore waters of Galicia, north-west Spain, during the summers of 2014 and 2015 is reported. Changes in oceanographic conditions, high recruitment events or changes in the pupping area are discussed as possible causes of this unusual behaviour. © 2016 The Fisheries Society of the British Isles


Banon R.,Servizo de Planificacion | Barros-Garcia D.,University of Vigo | Mucientes G.,Grupo de Estudos do Medio Marino GEMM | De Carlos A.,University of Vigo
Acta Ichthyologica et Piscatoria | Year: 2014

Background. The first records of the redbanded seabream, Pagrus auriga Valenciennes, 1843 (Sparidae), and the bastard grunt, Pomadasys incisus (Bowdich, 1825) (Haemulidae), from Galician waters (NW Spain) are reported herewith. Both findings constitute the northernmost confirmed records of those fishes in the eastern Atlantic. The Galician waters seem to be an important observation point of this phenomenon as evidenced by the high number of new tropical-affinity fishes recorded during the last years in this area. © 2015 Akademia Rolnicza w Szczecinie. All rights reserved.


Chevaldonne P.,Aix - Marseille University | Perez T.,Aix - Marseille University | Crouzet J.-M.,Mer and Littoral | Bay-Nouailhat W.,Mer and Littoral | And 6 more authors.
Marine Ecology | Year: 2015

Marine cave communities have been a continued source of ecological surprises, among other things because of their close ecological and evolutionary ties with the deep sea. The discovery of cladorhizid sponges, the deepest occurring poriferan family, in shallow Mediterranean caves in the 1990s was one such surprise, leading to the generally accepted hypothesis that the whole family was carnivorous, an unprecedented feeding mode for sponges. The recent observation of the cave species Asbestopluma hypogea in the Mediterranean bathyal, confirmed the view that some shallow caves can occasionally shelter otherwise deep-dwelling species. Here we present new distribution data of A. hypogea, from deep Mediterranean locations, and for the first time from Atlantic locations. Among the new Atlantic records, the most surprising ones are located in three different geographic areas (Ria de Arousa, Groix Island and Cherbourg) of the NW European coasts, from the Iberian Peninsula to the English Channel, where A. hypogea reaches SCUBA depths (5-50 m), while not sheltered in marine caves. The carnivorous sponge however reaches its shallowest occurrence (5 m), in a small cave at Groix Island. The ecological significance of these discoveries, particularly the very patchy distribution and peculiar dynamics, are noteworthy, and the shallow occurrence of A. hypogea, together with other deep-water or uncommon species, constitute unique assemblages that must be considered in conservation plans. © 2015 Blackwell Verlag GmbH.


Norena C.,CSIC - National Museum of Natural Sciences | Marquina D.,CSIC - National Museum of Natural Sciences | Perez J.,Grupo de Estudos do Medio Marino GEMM | Almon B.,Spanish Institute of Oceanography
ZooKeys | Year: 2014

A study of polyclad fauna of the Atlantic coast of the Iberian Peninsula was carried out from 2010 to 2013. The paper reports nine new records belonging to three Cotylean families: the family Euryleptidae Lang, 1884, Pseudocerotidae Lang, 1884 and the family Prosthiostomidae Lang, 1884, and describes one new species, Euryleptodes galikias sp. n. © Carolina Noreña et al.


Almon B.,Spanish Institute of Oceanography | Perez J.,Grupo de Estudos do Medio Marino GEMM | Banon R.,Grupo de Estudos do Medio Marino GEMM | Trigo J.,Grupo de Estudos do Medio Marino GEMM
Marine Biodiversity Records | Year: 2014

The caprellid amphipod, Caprella mutica, is a well-known invasive species, originating in the Sea of Japan, which has been rapidly expanding along the coasts of North America, Europe and Oceania for the last forty years. Caprella mutica is frequently associated with man-made structures, especially those dedicated to aquaculture activities, where it can reach high densities of up to 300,000 ind./m2. A well-established population of C. mutica was recently found by SCUBA-divers in Galician waters (north-west Spain) at 6 different man-made floating structures along Ría de Arousa. The record of this species in this location implies a new southernmost limit of distribution, extending the known distribution range in Atlantic European waters and confirming the continuity of the colonization southwards. © Marine Biological Association of the United Kingdom, 2014.


Banon R.,Servizo de Planificacion | Fernandez J.,Conselleria Do Mar e Medio Rural | Trigo J.E.,Grupo de Estudos Do Medio Marino GEMM | Perez-Dieste J.,Grupo de Estudos Do Medio Marino GEMM | And 2 more authors.
Journal of the Marine Biological Association of the United Kingdom | Year: 2015

The occurrence of the alien species Anadara kagoshimensis is reported for the first time in the Ría de Arousa (Galicia, NW Spain) during 2013. Living specimens of this species have been recognized by morphological analysis. The cytochrome c oxidase subunit I gene has been partially sequenced and Maximum likelihood and Bayesian analyses carried out to confirm its identification. This new record reaffirms the presence of A. kagoshimensis, previously reported as Anadara inaequivalvis, along the Atlantic European coast extending the known distribution range in Spanish waters to the south. © Marine Biological Association of the United Kingdom, 2014.


Cuesta J.A.,Institute Ciencias Marinas Of Andalucia | Almon B.,Grupo de Estudos do Medio Marino GEMM | Perez-Dieste J.,Grupo de Estudos do Medio Marino GEMM | Trigo J.E.,Grupo de Estudos do Medio Marino GEMM | Banon R.,Grupo de Estudos do Medio Marino GEMM
Biological Invasions | Year: 2016

Ten unusual decapod crustacean species are reported for the coasts of Galicia (NW Spain), eight of them recorded for the first time in this area. Three species: Pilumnopeus africanus, Charybdis hellerii and Pachygrapsus gracilis, are non-indigenous species. The reports of Panopeus africanus and Inachus aguiarii represent the northernmost localities of these African species, whose previous North limits were in the Southwestern European coasts. Remaining five species: Xaiva biguttata, Bathynectes longipes, Parthenopoides massena, Monodaeus couchii and Homola barbata are scarcely known species found within their distribution range. Updated data about these species are given, both from the point of view of their distribution and identification (morphological and molecular methods), as well as the potential pathways for introduction of the non-indigenous ones. According to evidence presented in the present study, biofouling still remains an important vector of species transmission and surely has been undervalued with respect to ballast water. © 2015, Springer International Publishing Switzerland.


Fernandez-Rodriguez I.,University of Oviedo | Banon R.,Grupo de Estudos do Medio Marino GEMM | Anadon N.,University of Oviedo | Arias A.,University of Oviedo
Cahiers de Biologie Marine | Year: 2016

The occurrence of the alien species Anadara transversa is reported for the first time in the Bay of Biscay, from two estuaries of northern Spain (Villaviciosa and Eo), constituting its northernmost distribution in E. Atlantic to date. We present a detailed diagnosis and illustrations of the species in order to facilitate its differentiation from other native ark clams and the introduced A. kagoshimensis. Furthermore, the potential pathways for its introduction in the area are discussed.

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