Intraspecific variation of trace elements in the kelp gull (Larus dominicanus): influence of age, sex and location

Pedrobom, Jorge Henrique; Menegário, Amauri Antônio; Gemeiner, Hendryk; Sulato, Everton Tiago; Elias, Lucas Pellegrini; Serafini, Patrícia Pereira; Rodrigues, Claudinei José; Barreto, André S.; Júnior, Marcus Antônio Gonçalves de Araújo

doi:10.1016/j.heliyon.2021.e05994

Cited by 6 publications

(1 citation statement)

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“…The mentioned studies analyzed Cd concentrations in 15 waterbird species, distributed in nine families and five orders, in which approximately 53.3% of the studies included resident birds, 26.6% with migrants from the south of South America, and about 20% with migrants from the Northern Hemisphere (20%). In the published articles, the oldest sample was collected in 2003 (Puffinus gravis, Barbieri et al 2007), while the most recent was sampled in 2018 (Larus dominicanus, Pedrobom et al 2021). The most frequent families investigated were Procellariidae and Ardeidae, each family represented by four species.…”

Section: Resultsmentioning

confidence: 99%

Waterbirds as cadmium sentinels in Brazil

2022

IECA

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Cadmium (Cd) is one of the most toxic elements of global concern in the environment with no biological value well known to science. Cadmium natural emissions, such as volcanic eruptions and natural fires, do not seem to release harmful concentrations of Cd in the environment, contrary to anthropogenic emissions (smelt, burning fossil fuels, phosphate fertilizer, nickel-cadmium batteries, plastic industry, etc). This review reports how waterbirds are used as sentinels of Cd concentrations on the Brazilian coast. We analyzed the standardization in methods and essential parameters to understand the levels and effects of Cd in this group of birds. Eighteen studies were carried out in the Brazilian territory, from 2007 to 2021, with a decline in publications in recent years. Cadmium concentrations were analyzed for 15 bird species, distributed in nine families and five orders. About 54% of the analyzed studies collected their samples in the territory of Rio de Janeiro state. Of the 17 Brazilian coastal states, Cd in waterbirds was only determined in eight states with the liver tissue being analyzed in 35% of the cases, followed by feathers (22%), kidney tissue (19%), muscles (13%), blood (8%), and eggshells (3%). In general, liver and kidney tissue concentrations were within the acceptable values for wild birds, 40 and 100 mg kg -1 respectively. Available data sets do not provide sufficient information to test any pattern of temporal and/or spatial trend in Cd concentrations in waterbirds. Besides, species of the same region do not necessarily concentrate the contaminants equally. Furthermore, the lack of standardization in methods and parameters compromises safe assessments of the conservation status of Brazilian waterbirds.

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Section: Resultsmentioning

confidence: 99%