Laura Prosdocimi

Museo Argentino de Ciencias Naturales (MACN-CONICET)

Leatherback turtles migrate long distances between nesting beaches and distant forag- ing areas worldwide. This study analyzes the genetic diversity, life history stage, spatiotemporal distribution, and associated threats of a foraging aggregation in the Southwest Atlantic Ocean. A total of 242 leatherbacks stranded or bycaught by artisanal fisheri...

El cambio climático es un fenómeno a escala global, con efectos evidentes que repercuten sobre los diversos cuerpos de agua provocando migraciones de especies, incremento en el nivel del mar, y aumento de la frecuencia e intensidad de condiciones climáticas extremas. En línea con lo expresado por la FAO en múltiples ámbitos y publicaciones, es posi...

Este documento representa una extensa evaluación sobre el conocimiento existente de los posibles efectos del Cambio Climático en el Océano Atlántico Sudoccidental y sobre sus recursos pesqueros. En este trabajo, que constituyó un gran esfuerzo de colaboración, participaron 89 investigadoras/es y 5 técnicas/os pertenecientes a 16 organismos del ámbi...

Reptiles de Buenos Aires es una obra única que reúne por primera vez en un solo libro todas las especies de reptiles que viven en la provincia. Cada especie está ilustrada con fotografías de primer nivel y mapas de distribución, además cuenta con información completa y actualizada acerca de la biología y descripción de cada especie. Este libro intr...

Los ecosistemas marinos pueden definirse como un conjunto interrelacionado de comunidades biológicas y el ambiente físico en el que se desarrolla una alta diversidad de organismos (bacterio, fito y zooplancton, invertebrados, peces, aves, reptiles y mamíferos marinos). Estos ecosistemas conforman sistemas altamente complejos, donde cada componente...

Mixed stocks are described for Chelonia mydas and the frequency of haplotypes in feeding areas can aid understanding of the genetic and ecological diversity, since with this information it is possible to identify the origin of the individuals. The current study aims to characterize and compare genetic diversity along the coast of Paraná with 17 oth...

Sea turtles, symbol of longevity, patience, fertility, and freedom, are reptiles that appeared on the earth about 200 million years ago. There are seven species grouped into two families Cheloniidae and Dermochelyidae. These animals are present in all the oceans and seas of the world, except in the polar regions. Sea turtles are a migratory species...

• Fisheries bycatch of non‐target species in the commercial fleet is a major source of anthropogenic injury and mortality for sea turtles and marine megafauna. • The Río de la Plata maritime front (RLPMF) and its adjacent international waters – comprising part of the Argentine and Uruguayan exclusive economic zones, is a highly important fishing gr...

Priority setting approaches for widely distributed and long-lived species can be challenging. This is especially true for sea turtles, which are species of conservation concern. The aim of this study was to conduct a detailed analysis of threats to identify, quantify and prioritize the main impacts to the loggerhead (Caretta caretta) population in...

Seabirds often have wide distribution ranges and may travel relatively long distances to breeding grounds, often crossing jurisdictional boundaries. When engaged in foraging behaviour, seabirds are prone to interact with different fisheries and suffer incidental mortality. We assessed the spatial use of foraging Magellanic penguins Spheniscus magel...

On 17 April 2017, the 23rd RETOMALA “Reunión de Especialistas Latinoamericanos en Tortugas Marinas” (Latin American Sea Turtle Specialists Annual Meeting) was carried out as part of the 37th Symposium on Sea Turtle Biology and Conservation in Las Vegas, Nevada, USA. The aim of this year’s meeting was to discuss new perspectives and priorities in th...

The genetic diversity and skull morphology of juvenile Chelonia mydas recruited to the southwestern Atlantic were evaluated to quantify intraspecific variation in the skull shape and size related to (1) broad geographic origin and (2) age (within the most abundant haplotype). 155 C. mydas stranded at 25o S in Brazil were sampled, with 108 assessed...

Dynamic population of leatherback (Dermonochelys coriacea) using genetic markers in Uruguayan coastal waters

RESUMEN: La tortuga laúd (Dermochelys coriacea) presenta una distribución mundial realizando grandes desplazamientos entre las áreas de cría y las zonas de alimentación. En la última década varios estudios en el Atlántico Sur a partir de seguimiento satelital de esta especie, han demostrado características del uso del hábitat y rutas migratorias. D...

During the last centuries, populations of marine megafauna—such as seabirds, turtles, and mammals—were intensively exploited. At present, other threats such as bycatch and pollution affect these species, which play key ecological roles in marine ecosystems as apex consumers and/or nutrient transporters. This study analyses the distribution of six m...

In 2007 the Comisión Técnica Mixta del Frente Marítimo established a closed area to bottom trawl in fishing rectangle 3656 to protect chondrichthyan reproductive aggregations and juveniles. The aim of this work was to analyze the evolution of said measure, the skate and shark landings declared during the 2006-2014 period in said rectangle and the d...

La plataforma submarina y la costa atlántica argentina durante los últimos 22.000 años El ascenso del nivel del mar en la costa de la provincia de Buenos Aires La corriente de Malvinas.Ramas y frentes oceánicos en el mar patagónico El impacto del Plata sobre el océano Atlántico Efecto de la radiación ultravioleta sobre los ecosistemas acuáticos Atr...

Large oceanic migrants play important roles in ecosystems, yet many species are of conservation concern as a result of anthropogenic threats, of which incidental capture by fisheries is frequently identified. The last large populations of the leatherback turtle, Dermochelys coriacea, occur in the Atlantic Ocean, but interactions with industrial fis...

The hawksbill sea turtle, Eretmochelys imbricata (Linnaeus 1766), is the most tropical of all sea turtle species, distributed along the central region of the Atlantic, Pacific, and Indian oceans (Mortimer and Donnelly 2008; Witzell 1983). The species lives in close association with hard-substrate communities such as coral reefs, foraging primarily...

Large oceanic migrants play important roles in ecosystems, yet many species are of conservation concern as a result of anthropogenic threats, of which incidental capture by fisheries is frequently identified. The last large populations of the leatherback turtle, Dermochelys coriacea, occur in the Atlantic Ocean, but interactions with industrial fis...

This study represents the first and most austral record of the critically endangered hawksbills sea turtle, Eretmochelys imbricata, in temperate waters of Argentina. Population genetic analysis conducted from samples of the specimens found suggest that the Brazilian nesting colonies might be one of the main contributors to these latitudes. This con...

Con la participación de nueve especialistas de diferentes instituciones de Argentina y transcurridos más de 10 años desde la primera Lista Roja de la herpetofauna de la República Argentina realizada por la Asociación Herpetológica Argentina en el año 2000, se re-categorizaron los taxones de Testudines presentes en el país incorporando nueva informa...

Through the participation of nine specialists from different institutions from all over Argentina and after more than a decade from the first Red List of threatened herpetofauna proposed by Asociación Herpetológica Argentina in 2000, we assessed the conservation status of the argentine Testudines taxa, adding the new taxonomic, biological and ecolo...

The green turtle, Chelonia mydas, like other species of marine turtles, shows great migratory displacement between its nesting and feeding grounds. In an attempt to characterize the southernmost feeding grounds of this species, mtDNA sequence variation of green turtle aggregations in Argentinean waters was studied to elucidate genetic variation and...

Three out of the five threatened species of sea turtle occurring in the SW Atlantic Ocean are regularly found in the coastal waters of Argentina: green (Chelonia mydas), loggerhead (Caretta caretta) and leatherback (Dermochelys coriacea) turtles. From 1995 to 2008, fishery and beach surveys were carried out along 2800 km coastline and reports from...

Summary of diving behaviour, swimming/apparent/current velocities and time spent in transit area/temporary residence area (TRA)/inter-TRA in oceanic (O) or neritic (N) domains in 16 Argos tracked leatherback turtles during their migration between 2005 and 2008 (see Fig. 1). Transit areas correspond to the time turtles spent from their nesting beach...

Background: Sea turtles are long-distance migrants with considerable behavioural plasticity in terms of migratory patterns, habitat use and foraging sites within and among populations. However, for the most widely migrating turtle, the leatherback turtle Dermochelys coriacea, studies combining data from individuals of different populations are unc...

Leatherback sea turtles, Dermochelys coriacea, undertake broad oceanic movements while traveling between breeding and foraging areas. While satellite telemetry has been used to investigate long-term movements and diving patterns of leatherback turtles around the world, behavioral information for this species in the South Atlantic Ocean is limited....

Descriptions of trans-Atlantic migrations of female leatherbacks focus essentially on movements from the western Atlantic to the eastern Atlantic. Bleakney (1965) speculated that some female leatherbacks from Guyanese nesting sites may migrate across to Europe. In April 1971, a leatherback tagged at Bigisanti Beach, Suriname, in May 1970 was recapt...