Organohalogen compounds in blubber of Indo-Pacific bottlenose dolphin (Tursiops aduncus) and spinner dolphin (Stenella longirostris) from Zanzibar, Tanzania

Mwevura, Haji; Amir, Omar; Kishimba, Michael A.; Berggren, Per; Kylin, Henrik

doi:10.1016/j.envpol.2010.02.027

Cited by 38 publications

(28 citation statements)

References 29 publications

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“…Coastal development can have a significant impact on cetacean habitat through chemical pollutants (Mwevura et al, 2010, acoustic pollution (Borggaard et al, 1999;Dähne et al, 2013), and non-degradable litter such as plastic debris (Simmonds, 2012). Vessel traffic and whale-or dolphin-watching activities have also been shown to affect animal behavior and are believed to have an impact on breeding and fitness if resting periods are disturbed (see Parsons, 2012 for a review).…”

Section: Introductionmentioning

confidence: 98%

Habitat selection of two island-associated dolphin species from the south-west Indian Ocean

Condet

Dulau-Drouot

2016

Continental Shelf Research

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Section: Introductionmentioning

confidence: 98%

Habitat selection of two island-associated dolphin species from the south-west Indian Ocean

Condet

Dulau-Drouot

2016

Continental Shelf Research

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“…A single sample of Skipjack Tuna muscle from Seychelles had no detectable PBDEs (LOQs 0.02-5 ng/g lm; Ueno et al, 2004). High concentrations of brominated compounds of biogenic origin were detected in the blubber of dolphins (210 000 ng/g lm in mature males) caught as by-catch between Zanzibar and mainland Tanzania (Mwevura et al, 2010), but anthropogenic brominated compounds were masked by organochlorine compounds and could not be determined.…”

Section: Brominated Compoundsmentioning

confidence: 99%

“…It is therefore surprising that the world's third largest water body, the Indian Ocean (Costello et al, 2010), is so deficient in information regarding POP residues in the environment. What is available is about POPs in water and air (inter alia Chen and Hale, 2010;Tanabe et al, 1982;Tanabe et al, 2004;Würl et al, 2006), coastal sediment (Barasa et al, 2007), plastic pellets , dolphins (Mwevura et al, 2010), and pelagic fish (inter alia Ueno et al, 2004;Ueno et al, 2005). PCB residues were reported for fish and sediment from Saint Paul and Amsterdam Islands (Monod et al, 1995), and in plankton south-west of Africa (Joiris and Overloop, 1991).…”

Section: Introductionmentioning

confidence: 99%

First report of chlorinated and brominated hydrocarbon pollutants in marine bird eggs from an oceanic Indian Ocean island

Bouwman

Kylin

Yive

et al. 2012

Environmental Research

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Highlights• The first POPs data in marine bird eggs from an oceanic Indian Ocean island • We sampled Sooty Tern and Common Noddy eggs • POPs levels were very low, but Sooty Tern eggs overall had higher levels • Very low levels of PBDEs were quantified • Rodrigues is an excellent site to monitor changes in background POP levels ABSTRACTWe report for the first time levels of persistent organic pollutants in marine bird eggs from an oceanic island in the Indian Ocean, the world's third largest ocean. Ten eggs each of the Common Noddy, also known as the Brown Noddy (Anous stolidus), and Sooty Tern (Sterna fuscata) were collected from Ile Cocos off the coast of the island of Rodrigues, located 560 km east of the island of Mauritius. ΣPCBs had the highest levels (2.2 and 2.6 ng/g wm, wet mass; 20 and 19 ng/g lm, lipid mass) for common Noddy and Sooty Tern, respectively (and following), then ΣDDT (1.9 and 3.1 ng/g wm; 17 and 23 ng/g lm), and mirex (0.96 and 0.69 ng/g wm; 8.7 and 5.0 ng/g lm). ΣChlordanes (0.094 and 0.15 ng/g wm; 0.48 and 0.73 ng/g lm) and Σtoxaphenes (0.26 and 0.61 ng/g wm; 2.4 and 5.9 ng/g lm) are rare data for these compounds from this ocean. Brominated flame retardants were low (0.08 and 0.07 ng/g wm; 0.7 and 0.7 ng/g lm). Multivariate analyses indicated different contamination patterns in the prey items as Sooty Terns had significantly higher levels of mean Σchlordanes and Σtoxaphenes, as well as CB105, -108 and -157. p,p'-DDE had an association with thinner eggshells in the Sooty Tern. Although the contaminant levels were in all respects low, industrialisation, development on the periphery, commercial exploitation of the marine environment, and pollutants transferred over long distances by marine debris is likely to add to chemical pressure in this region. Monitoring changes in background levels of pollutants in remote regions will indicate such trends, and marine bird eggs from Rodrigues would be an excellent site.

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“…The health status of small cetaceans and the presence of lobomycosis-like disease was described for the first time in the Indian Ocean, especially around Mayotte . Pollutant levels were investigated across a wide range of sites in the SWIO (Jauniaux et al, submitted;Mwevuraa et al, 2010). Around other islands, such as Juan de Nova, Europa and Glorieuses, the occurrence of odontocetes has been investigated during an exploratory survey (Doremus et al, 2009).…”

Section: Southwest Indian Oceanmentioning

confidence: 99%

“…This dedicated research and capacity building program has focused on assessments of conservation status of delphinids and in particular Indo-Pacific bottlenose dolphin (Amir, 2010;Berggren et al, 2007). Data are available on levels of bycatch (Amir et al, 2002), feeding ecology of bycaught animals (Amir et al, 2005a), growth and reproduction (Amir, 2010), the occurrence and distribution of species around the island (Amir et al, 2005b), population size and behaviour (Stensland et al, 2006), behavioural changes in response to tourism vessels (Christiansen et al, 2010;Englund and Berggren, 2002;Stensland and Berggren, 2010), phylogenetic placement and population structure and pollutants in the blubber of Indo-Pacific bottlenose and spinner dolphins (Mwevuraa et al, 2010). …”

Section: Southwest Indian Oceanmentioning

confidence: 99%

Cetacean research in the southern African subregion: a review of previous studies and current knowledge

Elwen

Findlay

Kiszka

et al. 2011

African Journal of Marine Science

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Cetacean research, in terms of the number of papers, research groups and areas for which data are available has expanded considerably in the Southern African Subregion (SAS) in the last decade, especially in the South West Indian Ocean (SWIO). Here we review cetacean research in the SAS from the 1800s to the present to provide an overview of findings, investigate trends and identify knowledge gaps. Data are presented separately for large whales (those subject to commercial whaling) and smaller cetaceans and are separated by era and ocean basin. Over 550 peer-reviewed papers and books were identified relating to research on cetaceans within the subregion. More than half (284) have been produced since 1990 and 193 relate specifically to South African waters. The most studied species are those that are most accessible due to their coastal distributions

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Organohalogen compounds in blubber of Indo-Pacific bottlenose dolphin (Tursiops aduncus) and spinner dolphin (Stenella longirostris) from Zanzibar, Tanzania

Cited by 38 publications

References 29 publications

Habitat selection of two island-associated dolphin species from the south-west Indian Ocean

Habitat selection of two island-associated dolphin species from the south-west Indian Ocean

First report of chlorinated and brominated hydrocarbon pollutants in marine bird eggs from an oceanic Indian Ocean island

Cetacean research in the southern African subregion: a review of previous studies and current knowledge

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