Anguilliform fish reveal large scale contamination by mine trace elements in the coral reefs of New Caledonia

Bonnet, Xavier; Briand, Marine J.; Brischoux, François; Letourneur, Yves; Fauvel, Thomas; Bustamante, Paco

doi:10.1016/j.scitotenv.2013.10.027

Cited by 23 publications

(24 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Bioaccumulation of mining (Co, Cr, Fe, Mn and Ni) and urban trace elements (Ag, As, Cd, Cu, Hg, Pb, Se, V and Zn) have been investigated in various taxa (crustaceans, molluscs, ascidians) (Bustamante et al 2000;Hédouin et al 2006Hédouin et al , 2007Hédouin et al , 2009Hédouin et al , 2010Hédouin et al , 2011Pernice et al 2009;Metian et al 2008aMetian et al , 2010. One study recently revealed high contamination levels by trace elements in fish from the south-western lagoon, extending from the coast to the barrier reef (Bonnet et al 2014). However, there is still little information available about trace element contamination of fish across the whole lagoon in New Caledonia (Chouvelon et al 2009, Fernandez andBreau 2011;Metian et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Spatial variability of metallic and organic contamination of anguilliform fish in New Caledonia

Briand

Letourneur

Bonnet

et al. 2013

Environ Sci Pollut Res

View full text Add to dashboard Cite

New Caledonia is one of the main hot spots of biodiversity on the planet. Large amounts of contaminants are discharged into the lagoon as a result of increasing anthropogenic activities such as intense mining, urbanization, and industrialization. Concentrations of 14 trace elements and 26 persistent organic pollutants (POPs: PCBs and pesticides) were measured in the muscles of two anguilliform fish species, over a coast to barrier reef gradient in two lagoon areas differently exposed to anthropic disturbances. This study emphasizes the high trace element contamination status of anguilliform fish and also highlights slight but perceptible organic pollution. The contamination extends throughout the lagoon, from coast to barrier reef, even in areas remote from emission points. High levels of trace elements, especially those linked to mining activities (i.e., Co, Cr, Fe, Mn, and Ni), were detected in coastal sites. Furthermore, the large dispersion of most POPs throughout the entire lagoon poses the question of their potential toxicity on marine organisms from numerous habitats. Our results underline the need for long-term monitoring of various contaminants over large spatial and time scales.

show abstract

Section: Introductionmentioning

confidence: 99%

Spatial variability of metallic and organic contamination of anguilliform fish in New Caledonia

Briand

Letourneur

Bonnet

et al. 2013

Environ Sci Pollut Res

View full text Add to dashboard Cite

show abstract

“…; Dornelas, Connolly & Hughes ; Bonnet et al . ). Furthermore, deep water (>100 m) and land act as barriers to movement and dispersal for sea kraits. Availability of rocks and boulders on/or near the shore that provide terrestrial shelters for sea kraits (Bonnet et al .…”

Section: Methodsmentioning

confidence: 97%

“…outside the lagoon), henceforth called distance to the ocean'. These two-first variables are commonly used in analyses of coral reef ecology, as they influence factors such as rainfall, humidity, salinity, wind exposure, soil and contaminant inputs, and biodiversity(Hemminga et al 1994;Dornelas, Connolly & Hughes 2006;Bonnet et al 2014b). Furthermore, deep water (>100 m) and land act as barriers to movement and dispersal for sea kraits.3 Availability of rocks and boulders on/or near the shore that provide terrestrial shelters for sea kraits), henceforth called 'rock abundance'.…”

mentioning

confidence: 99%

Spatial variation in age structure among colonies of a marine snake: the influence of ectothermy

Bonnet

Brischoux

Pinaud

et al. 2015

Journal of Animal Ecology

Self Cite

View full text Add to dashboard Cite

Abstract1. Several tetrapod lineages that have evolved to exploit marine environments (e.g. seals, seabirds, sea kraits) continue to rely upon land for reproduction and, thus, form dense colonies on suitable islands. 2. In birds and mammals (endotherms), the offspring cannot survive without their parents. Terrestrial colonies contain all age classes. In reptiles (ectotherms), this constraint is relaxed, because offspring are independent from birth. Hence, each age class has the potential to select sites with characteristics that favour them. 3. Our studies of sea snakes (sea kraits) in the lagoon of New Caledonia reveal marked spatial heterogeneity in age structure among colonies. 4. Sea krait colonies exhibit the endothermic 'seal-seabird' pattern (mixed-age classes within populations) only where the lagoon is narrow. Where the lagoon is wide, most snake colonies are comprised primarily of a single age cohort. Nurseries are located near the coast, adult colonies offshore and mixed colonies in-between. 5. We suggest that ectothermy allows individuals to utilize habitats that are best suited to their own ecological requirements, a flexibility not available to endothermic marine taxa with obligate parental care.

show abstract

“…(), who demonstrate their underestimated and unexpected diversity and abundance. This statement was supported by subsequent studies (Bonnet, ; Bonnet et al ., ; Briand et al ., ; Brischoux et al ., , ; Fauvel et al ., ). One such study assessed, for example, the role played by these carnivorous fishes in coral‐reef trophic networks (Briand et al ., ).…”

Section: Introductionmentioning

confidence: 98%

Differential uses of coral reef habitats by a poorly‐known cryptic fish predator

Morat

Briand

Pécheyran

et al. 2018

Journal of Fish Biology

Self Cite

View full text Add to dashboard Cite

Funding informationThis work was funded by the Total Foundation and the Ecole Doctorale du Pacifique (ED 469) through a PhD grant to M.J.B.This study used otolith microchemistry to evaluate whether the moray eel Gymnothorax chilospilus uses different habitats throughout its life (mainly juvenile and adult phases). Of the most informative trace elements within otoliths (the twelve isotopes 23 Na, 25 Mg, 43 Ca, 55 Mn, 59 Co, 60 Ni, 63 Cu, 66 Zn, 86 Sr, 111 Cd, 138 Ba and 208 Pb) only three ratios of Ca (Na:Ca, Sr:Ca and Ba:Ca) were informative and therefore used in a multivariate regression-tree analysis. Using a multivariate partitioning, three main phases were described from profiles, including the larval life phase (leptocephali), the intermediate phase (longest section between the larval life phase and the terminal phase) and the terminal phase (final section i.e., the most recent months preceding the death of fish). According to concentrations of the three ratios to Ca, G. chilospilus can be separated into three groups during their larval life stage (very different in Sr and Na), four groups during the intermediate phase (few differences in Sr and Na) and three groups during the terminal phase (differences in Sr), illustrating that G. chilospilus inhabit different habitats during these three phases. Our results showed that the leptocephali encountered different oceanic water masses with fluctuating Sr:Ca ratios during the early larval phase. During the intermediate phase (main part of their life-span), they lived in lagoonal waters such as fringing reefs or reef flats of lagoonal islets, characterized by a lower Sr:Ca ratio. During the latter part of their life, approximately one third of G. chilospilus encountered more oceanic waters close to or at barrier reefs, suggesting possible movements of these fish along a coast-to-ocean gradient.

show abstract

Anguilliform fish reveal large scale contamination by mine trace elements in the coral reefs of New Caledonia

Cited by 23 publications

References 48 publications

Spatial variability of metallic and organic contamination of anguilliform fish in New Caledonia

Spatial variability of metallic and organic contamination of anguilliform fish in New Caledonia

Spatial variation in age structure among colonies of a marine snake: the influence of ectothermy

Differential uses of coral reef habitats by a poorly‐known cryptic fish predator

Contact Info

Product

Resources

About