Trophic ecology drives contaminant concentrations within a tropical seabird community

Abstract

Fernandez, et al.. Trophic ecology drives contaminant concentrations within a tropical seabird community. Environmental Pollution, Elsevier, 2017Elsevier, , 227, pp.183 -193. <10.1016Elsevier, /j.envpol.2017 Hg concentration in several adults Laughing gulls Leucophaeus atricilla and Royal ternsThalasseus maximus, and in all Magnificent frigatebirds was similar or higher than that of high contaminated seabird populations. Furthermore, nestling red blood cells also contained Hg concentrations of concern, and further studies should investigate its potential health impact in this seabird community. Differences in adult trophic ecology of the six species explained interspecific variation in exposure to trace element and POPs, while nestling trophic ecology provides indications about the diverse feeding strategies adopted by the six species, with the consequent variation in exposure to contaminants.

Food supplementation protects Magnificent frigatebird chicks against a fatal viral disease

“…Grand Connétable is a small rocky island located near the coasts of French Guiana (South America), which hosts approximately 1,300 reproductive pairs (unpublished data) of Magnificent frigatebird Fregata magnificens (described in Sebastiano et al, 2017a). This frigatebird population is considered as one of the most important along the Atlantic coast of South America (Nuss, Caio, Ignacio, & Nelson, 2016).…”

New sightings records of marine mammals and seabirds off French Guiana

“…Frigatebirds appear to be opportunistic feeders, occurring in coastal waters over 200 km away from the colony (Weimerskirch et al, 2003;Sebastiano et al, 2017). Their wide distribution range in the survey reflects this high plasticity.…”

“…Most of the published data on marine mammals off French Guiana have focused on coastal species (De Thoisy et al, 2003;Flores & Da Silva, 2009) and the knowledge on the offshore area is restricted to the gray literature. While most of the existing literature on seabirds relates to breeding birds (Weimerskirch et al, 2003(Weimerskirch et al, , 2006Martinet & Blanchard, 2009;Sebastiano et al, 2017), there have been few studies on individuals at sea (Mannocci et al, 2013). Some recordings come from observations during seismic surveys in Guiana and adjacent waters, but few data are published (De Boer et al, 2014;Willems et al, 2017).…”

Poluentes Orgânicos Persistentes em sangue de aves marinhas no Arquipélago de São Pedro e São Paulo e na Ilha da Trindade

“…Muitos estudos têm sido realizados para determinação de POPs em aves marinhas (FÄNGSTRÖM et al, 2005;COLABUONO et al, 2012;CUNHA et al, 2012;GUZZO et al, 2014;COLABUONO et al, 2016;SEBASTIANO et al, 2017) sendo que os tecidos mais utilizados como matrizes de análise são fígado, músculo e gordura (BORGA et al, 2001).…”

“…Ainda que a literatura referente ao uso do sangue como matriz para análise de POPs em aves venha crescendo significativamente, estudos realizados no oceano Atlântico e na América do Sul seguem em menor velocidade, mas já reportaram que as concentrações de contaminantes no sangue estão fortemente correlacionadas com as concentrações em tecidos ricos em lipídios em aves (HENRIKSEN et al, 1998;BUSTNES et al, 2015;SEBASTIANO et al, 2016). Dentre os trabalhos mais recentes, realizados no oceano Atlântico, SEBASTIANO et al (2017) analisaram o plasma de 6 espécies de aves marinhas nas ilhas Grand Connétable, Guiana Francesa, onde foram detectados, principalmente, PCBs e pp'-DDEs nas populações de aves marinhas reprodutivas.…”