2021
DOI: 10.1007/s12526-021-01215-7
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Stable isotope evidence for movements of hammerhead sharks Sphyrna lewini, connecting two natural protected areas in the Colombian Pacific

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Cited by 9 publications
(8 citation statements)
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“…Although isotopic baseline characterization can be challenging for highly migratory species (Graham et al, 2010;Garcıá-Rodrıǵuez et al, 2021), isotopic data for S. lewini across the ETP has corroborated offshore foraging and intermediate trophic levels of prey consumption such as squid and small pelagic fish (Loor-Andrade et al, 2015;Estupiñań-Montaño et al, 2021b). However, their dietary preferences have also been related to their geographic location and life stages (Rosende-Pereiro et al, 2020;Estupiñań-Montaño et al, 2021c).…”
Section: Introductionmentioning
confidence: 99%
“…Although isotopic baseline characterization can be challenging for highly migratory species (Graham et al, 2010;Garcıá-Rodrıǵuez et al, 2021), isotopic data for S. lewini across the ETP has corroborated offshore foraging and intermediate trophic levels of prey consumption such as squid and small pelagic fish (Loor-Andrade et al, 2015;Estupiñań-Montaño et al, 2021b). However, their dietary preferences have also been related to their geographic location and life stages (Rosende-Pereiro et al, 2020;Estupiñań-Montaño et al, 2021c).…”
Section: Introductionmentioning
confidence: 99%
“…Species' ecologies can be quantified based on their functional traits – measurable intrinsic characteristics that broadly reflect how resources are obtained, used and transported, which ultimately impact biodiversity and how the ecosystem operates (Mouillot et al ., 2013; Petchey & Gaston, 2006). A key functional trait in sharks is body size, which is fundamental to inform on the size of the prey they consume (Heupel et al ., 2014; Lucifora et al ., 2009) and the distance they can travel, and thus their ability to connect habitats and transport nutrients (Doughty et al ., 2016; Estupiñán‐Montaño et al ., 2021). Another essential trait in shark ecology is diet ( i.e ., the prey items they consume), which is inherently linked to trophic level, and therefore the ability of some sharks to alter ecosystem structure, resource distribution and partitioning via top‐down control both directly through prey consumption and indirectly by altering prey behaviour and distribution (Burkholder et al ., 2013; Cortés, 1999; Papastamatiou et al ., 2006).…”
Section: Introductionmentioning
confidence: 99%
“…Stable isotope analyses (SIA) of fish tissues are powerful intrinsic tracers that have contributed to the ecological understanding of highly migratory and protected shark species (Estrada et al, 2003;MacNeil et al, 2005;Hussey et al, 2012;Bird et al, 2018). Chronometric structures such as the mineralized vertebral cartilage of several shark species have been used as chemical archives to characterize life-history traits (Hussey et al, 2012), infer ontogenetic changes in habitat and feeding habits (Estupiñań-Montaño et al, 2019;Estupiñań-Montaño et al, 2021a), reconstruct environmental histories (Carlisle et al, 2015), and track movements between oceanic and coastal marine ecosystems (Carlisle et al, 2015;Estupiñań-Montaño et al, 2021b). The d 13 C and d 15 N values of subsamples taken from the recently deposited vertebral edge of sharks reflects local foraging, and in the case of young sharks, the material laid down after the birth mark indicates a mixture of both maternal feeding from eggs within the womb and maternal supply (e.g.…”
Section: Introductionmentioning
confidence: 99%
“…uterine milk, yolk sac placenta) in late-term embryos (Estupiñań-Montaño et al, 2019;Tomita et al, 2022), as well as foods consumed in their nursery habitats as neonates (Estrada et al, 2006;Shen et al, 2021). In older sharks, determination of isotopic values of vertebrae subsamples taken longitudinally along the axis of outward radial growth allows changes in feeding habits and foraging regions to be characterized throughout ontogeny (Estrada et al, 2006;Kim et al, 2012;Estupiñań-Montaño et al, 2019;Estupiñań-Montaño et al, 2021b).…”
Section: Introductionmentioning
confidence: 99%