USING ANTHROPOGENIC CONTAMINANTS AND STABLE ISOTOPES TO ASSESS THE FEEDING ECOLOGY OF GREENLAND SHARKS

By A. Fisk, S. Tittlemier, J. Pranschke, R. Norstrom. 2002

268 citations recorded by the source corpus.

Subfields: Ecology, Health, Toxicology and Mutagenesis, Oceanography

View Paper: https://www.semanticscholar.org/paper/68a64e6f4dad7bfca066b2b92899d01d98a45fbc

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Ecology

1. J. Logan
2. M. Lutcavage
3. A. Fisk
4. B. Popp
5. J. Durban
6. S. Newsome
7. M. MacNeil
8. N. Wallsgrove

In Health, Toxicology and Mutagenesis

1. M. Lutcavage
2. J. Logan
3. P. Koch
4. A. Fisk
5. Mark T. Clementz
6. S. Newsome

In Oceanography

1. J. Durban
2. C. Matkin
3. P. Wade
4. R. LeDuc
5. M. Lutcavage
6. J. Logan
7. D. G. Burrows
8. D. Herman

Citations in the corpus

• Variable uptake and elimination of stable nitrogen isotopes between tissues in fish (2006, background): “This kind of problem has been emphasized previously where stable isotope results have been discredited by chemical tracers (Fisk et al. 2002).”
• Feeding ecology of eastern North Pacific killer whales Orcinus orca from fatty acid, stable isotope, and organochlorine analyses of blubber biopsies (2005, background): “Samalga Pass NR aOnly samples with attached skin were analyzed for stable isotopes; several samples could not be analyzed for FAs or OCs due to an insufficient quantity of attached blubber bSample collection dates either embedded within the Animal ID, where first 6 digits represent yr/mo/d, or the y”
• Predicting trophic position in sharks of the north-west Atlantic Ocean using stable isotope analysis (2003, background): “Fisk et al. (2002) hypothesized that the retention of urea for osmotic balance in elasmobranchs might cause the nitrogen isotope ratio to be more depleted, resulting in the underestimation of elasmobranch TP.”
• Communal or competitive? Stable isotope analysis provides evidence of resource partitioning within a communal shark nursery (2011, background): “These include a handful of field studies that focus on sharks and rays (Fisk et al. 2002, Estrada et al. 2003, Domi et al. 2005, MacNeil et al. 2005, Estrada et al. 2006, Kerr et al. 2006, McMeans et al. 2009), and only 3 laboratory studies: MacNeil et al. (2006), who assessed variable uptake and…”
• Trace me if you can: the use of intrinsic biogeochemical markers in marine top predators (2012, background): “Several of these chemicals are increasingly used as intrinsic markers, hereafter referred to as tracers, to study the feeding habits or seasonal movements of different organisms (Figure 1; Fisk et al. 2002; Budge et al. 2008; Rooker et al. 2008; Ramos et al. 2009a).”
• Using stable isotope biogeochemistry to study marine mammal ecology (2010, background): “…Ocean, and Black Sea (Das et al. 2000, 2004b; Borrell and Aguilar 2005; Borrell et al. 2006); ringed seal populations in the Canadian Arctic (Fisk et al. 2002a); minke whales in the North Atlantic (Born et al. 2003); and killer whale ecotypes in the North Pacific Ocean (Herman et al. 2005;…”
• Stable isotope dynamics in elasmobranch fishes (2010, methodology): “could produce artificially low trophic position estimates ( Fisk et al., 2002 ), and failure to account for this effect would induce error in mixing model estimates of diet proportions (Phillips & Gregg, 2001).”
• Stable isotope profiles of large marine predators: Viable indicators of trophic position, diet, and movement in sharks? (2011, background): “…(15N/14N expressed relative to a standard as d15N) have been proven as a valuable tool in elucidating trophic relations in aquatic food webs (Vander Zanden et al. 1997; Post 2002) and have recently been applied in the study of sharks (Fisk et al. 2002; Estrada et al. 2006; Hussey et al. 2011).”
• The slowest fish: Swim speed and tail-beat frequency of Greenland sharks (2012, background): “Despite their cold habitats and ectothermic physiology, they are known to consumemarine mammals, especially seals, as a significant part of their diets (Fisk et al., 2002; Leclerc et al. 2012; Yano et al., 2007).”
• conservation of freshwater and euryhaline elasmobranchs: a review (2005, background): “…heavy metals and other toxins in higher concentrations than most other groups of marine organisms (Forrester et al., 1972; Walker, 1988; Fisk et al., 2002), but the health and reproductive ¢tness impacts of these toxins are incompletely understood (Adamson & Guarino, 1972; Redding,…”
• Investigations of Δ14C, δ13C, and δ15N in vertebrae of white shark (Carcharodon carcharias) from the eastern North Pacific Ocean (2006, result): “Estrada et al. (2003) contend that TP values obtained for sharks in their study do not support the idea put forth by Fisk et al. (2002) , that retention of urea in elasmobranchs may lower d 15 N values and therefore lead to underestima-”
• Diet and resource use among Greenland sharks (Somniosus microcephalus) and teleosts sampled in Icelandic waters, using δ13C, δ15N, and mercury (2010, background): “Of course, teleosts are not the only prey of Greenland sharks based on stomach content data (this study; Fisk et al. 2002), and additional prey such as marine mammals likely contributed to observed Hg concentrations in Greenland sharks.”
• Nursery habitat use and foraging ecology of the brown stingray Dasyatis lata determined from stomach contents, bulk and amino acid stable isotopes (2011, methodology): “Thus, stable isotope analyses provide a complementary method to SCA for detecting ontogenetic shifts in diet and foraging habitat and calculation of TP (Post 2002, Fisk et al. 2002, Cocheret de la Morinière et al. 2003, MacNeil et al. 2005).”
• Ultrasonic tracking of Greenland sharks, Somniosus microcephalus, under Arctic ice (2004, background): “The Greenland shark is considered an omnivore and scavenger (Bigelow and Schroeder 1948, 1953; Compagno 1984), and a recent study (Fisk et al. 2002) suggested that seals eaten either as prey or carrion may comprise a significant portion of its diet.”
• Stable isotopes from multiple tissues reveal diet switching in sharks (2005, background): “Fisk et al. (2002) were among the first to estimate a shark’s trophic position using stable nitrogen isotopes, finding that δ15N alone was not an appropriate surrogate for trophic position in the Greenland shark Somniosus microcephalus.”