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Rivera, Uruguay

Pellizzari F.,University Estadual do Parana | Velez-Rubio G.M.,Karumbe | Velez-Rubio G.M.,University of Valencia | Velez-Rubio G.M.,Centro Universitario Regional del Este | And 2 more authors.
Marine Biodiversity

This study reports the first occurrences of the brown seaweed Myriogloea major Asensi (Chordariacea, Phaeophyceae) and the green seaweed Gayralia oxysperma (Kützing) K.L. Vinogradova ex Scagel et al. (Ulvophyceae, Chlorophyta) along the Uruguayan coast. These new records could represent respectively a northward and southward range extension for M. major and G. oxysperma in the Southwestern Atlantic. These findings are particularly relevant since the Uruguayan coast has been highlighted as one of the least studied areas in the Southern Atlantic concerning macroalgal diversity, despite its phytogeographic relevance as an ecotone between the adjacent biogeographic provinces. Further research regarding seaweed diversity and distribution in the Uruguayan coast is demanded, in order to update the list of the marine phycoflora. Molecular approaches should be mandatory, since the presence of several cryptic species, such as Myriogloea and Gayralia, in the area has been reported. Considering the biogeographic relevance of the area, and the pressing needs to relate these new records with changes in regional circulation patterns, global meteoceanographic changes and/or anthropic introductions, these new occurrences highlights the need for urgent sampling surveys in the area. © 2016 Senckenberg Gesellschaft für Naturforschung and Springer-Verlag Berlin Heidelberg Source

Vegter A.C.,James Cook University | Barletta M.,Federal University of Pernambuco | Beck C.,U.S. Geological Survey | Borrero J.,ECoast Marine Consulting and Research | And 24 more authors.
Endangered Species Research

Marine wildlife faces a growing number of threats across the globe, and the survival of many species and populations will be dependent on conservation action. One threat in particular that has emerged over the last 4 decades is the pollution of oceanic and coastal habitats with plastic debris. The increased occurrence of plastics in marine ecosystems mirrors the increased prevalence of plastics in society, and reflects the high durability and persistence of plastics in the environment. In an effort to guide future research and assist mitigation approaches to marine conservation, we have generated a list of 16 priority research questions based on the expert opinions of 26 researchers from around the world, whose research expertise spans several disciplines, and covers each of the world's oceans and the taxa most at risk from plastic pollution. This paper highlights a growing concern related to threats posed to marine wildlife from microplastics and fragmented debris, the need for data at scales relevant to management, and the urgent need to develop interdisciplinary research and management partnerships to limit the release of plastics into the environment and curb the future impacts of plastic pollution. © Inter-Research 2014. Source

Velez-Rubio G.M.,University of Valencia | Tomas J.,University of Valencia | Miguez-Lozano R.,University of Valencia | Xavier J.C.,University of Coimbra | And 4 more authors.
Marine Biodiversity

A total of 52 cephalopod beaks were found in the stomachs and intestines of 17 out of 54 green turtles, Chelonia mydas, stranded on the Uruguayan coast between 2009 and 2013 (frequency of occurrence = 31.5 %). Upper and lower beaks were assigned to at least six Oegopsid species of four different genera, Chiroteuthis, Histioteuthis, Onykia (= Moroteuthis) and Mastigoteuthis. Although the presence of cephalopods in the diet of green turtles has been reported previously, it has been quoted as a sporadic or less important diet category. Our findings suggest that this intake of cephalopods by juvenile green turtles during their oceanic stages may be more common in the Southwestern Atlantic Ocean waters than previously thought. According to our records, two of the six Oegopsid squid species found would have a more extended distribution than previously reported, ranging from circumpolar sub-Antarctic areas to the Brazil-Malvinas confluence zone. We highlight the potential of diet analysis of pelagic predators as a tool to enhance our knowledge of the diversity and distribution of poorly known cephalopod species. © 2014 Senckenberg Gesellschaft für Naturforschung and Springer-Verlag Berlin Heidelberg. Source

Velez-Rubio G.M.,University of Valencia | Estrades A.,Karumbe | Fallabrino A.,Karumbe | Tomas J.,University of Valencia
Marine Biology

We present the first study conducted in a wide spatio-temporal scale on marine turtles strandings (N = 1,107) over a 12-year period (1999-2010) in Uruguay. Five species were recorded Chelonia mydas (N = 643; 58.1 %), Caretta caretta (N = 329; 29.7 %), Dermochelys coriacea (N = 131; 11.8 %), Eretmochelys imbricata (N = 3; 0.3 %), and Lepidochelys olivacea (N = 1; 0.1 %). The first three species stranded throughout the Uruguayan coast, but differences in distribution patterns were detected among species. Although occurring year round, stranding records show a clear seasonal pattern with variation in monthly distribution among species, but with a peak of records in austral summer. Strandings provide indirect evidence of threats to marine turtles in Uruguayan and surrounding waters, particularly fisheries and marine debris. Our results demonstrate that Uruguayan coastal waters likely serve as a foraging or development area for at least three endangered marine turtle species in temperate waters. © 2013 Springer-Verlag Berlin Heidelberg. Source

Alonso L.,Karumbe | Estrades A.,Karumbe | Scarabino F.,Museo Nacional de Historia Natural | Calcagno J.,University of Buenos Aires
Pan-American Journal of Aquatic Sciences

The barnacle Conchoderma virgatum (Spengler, 1790) is reported as an epibiont of Chelonia mydas from Uruguay for the first time. This study pr ovides the first available data on the sizes of C. virgatum for the southwestern Atlantic Ocean. Source

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