26 Result(s)
within
Yannis P. Papastamatiou
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Article
Directed conservation of the world’s reef sharks and rays
Many shark populations are in decline around the world, with severe ecological and economic consequences. Fisheries management and marine protected areas (MPAs) have both been heralded as solutions. However, t...
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Elucidating the role of competition in driving spatial and trophic niche patterns in sympatric juvenile sharks
The coexistence of ecologically and morphologically similar species is often facilitated by the partitioning of ecological niches. While subordinate species can reduce competition with dominant competitors thr...
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Evidence for spatial and temporal resource partitioning of sharks at Roca Partida, an isolated pinnacle in the eastern Pacific
In the open ocean, cycles in vertical movement of predators in response to physical environments and distributions of prey are fundamental to the behavior of predatory species. Multi-species assemblages of sha...
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Individual differences in diel and vertical activity patterns in a large pelagic predator, the oceanic whitetip shark
Diel activity patterns and fine-scale behavior of large pelagic fishes have been poorly studied relative to their coastal counterparts. In particular, little is known about how predator activity varies with ti...
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Open AccessFirst descriptions of the seasonal habitat use and residency of scalloped hammerhead (Sphyrna lewini) and Galapagos sharks (Carcharhinus galapagensis) at a coastal seamount off Japan
The Northwestern Pacific is a data-poor region for studies into the movements and habitat use of open ocean and pelagic sharks. However, this region experiences considerable pressure from commercial fishing. T...
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Estimated life-history traits and movements of the Caribbean reef shark (Carcharhinus perezi) in The Bahamas based on tag-recapture data
The Caribbean reef shark (Carcharhinus perezi) is an economically important species in The Bahamas, where it is protected from fishing and is a mainstay for the shark dive tourism industry. Significant declines i...
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Reply to: Shark mortality cannot be assessed by fishery overlap alone
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Reply to: Caution over the use of ecological big data for conservation
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Gut microbial diversity and digestive function of an omnivorous shark
The intestinal microbiome of vertebrates has been shown to play a crucial role in their digestive capabilities. This is particularly true for omnivores and herbivores that rely on enteric microbes to digest co...
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Intestinal eversion in a pelagic shark evokes chase and bite attempts by large-bodied carangid fish
Expelling indigestible objectives through the cloaca is an important cleansing behaviour for several species of higher vertebrates. Although intestinal eversions are short in duration and rarely observed in fr...
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Open AccessA scalable, satellite-transmitted data product for monitoring high-activity events in mobile aquatic animals
A growing number of studies are using accelerometers to examine activity level patterns in aquatic animals. However, given the amount of data generated from accelerometers, most of these studies use loggers th...
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Author Correction: Global status and conservation potential of reef sharks
An Amendment to this paper has been published and can be accessed via a link at the top of the paper.
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Article
Global status and conservation potential of reef sharks
Decades of overexploitation have devastated shark populations, leaving considerable doubt as to their ecological status1,2. Yet much of what is known about sharks has been inferred from catch records in industria...
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Habitat-specific inter and intraspecific behavioral interactions among reef sharks
Behavioral interactions such as dominance are critical components of animal social lives, competitive abilities, and resulting distribution patterns with coexisting species. Strong interference competition can...
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Open AccessSame species, different prerequisites: investigating body condition and foraging success in young reef sharks between an atoll and an island system
Acquiring and storing energy is vital to sharks of all age-classes. Viviparous shark embryos receive endogenous maternal energy reserves to sustain the first weeks after birth. Then, in order to maintain body ...
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Global spatial risk assessment of sharks under the footprint of fisheries
Effective ocean management and the conservation of highly migratory species depend on resolving the overlap between animal movements and distributions, and fishing effort. However, this information is lacking ...
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Open AccessActivity seascapes highlight central place foraging strategies in marine predators that never stop swimming
Central place foragers (CPF) rest within a central place, and theory predicts that distance of patches from this central place sets the outer limits of the foraging arena. Many marine ectothermic predators beh...
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Apex predatory sharks and crocodiles simultaneously scavenge a whale carcass
Scavenging is an important component to the overall ecology of consumers in virtually all ecosystems on Earth. Given the energetic benefits of foraging on these resource subsidies, opportunistic predators will...
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A global perspective on the trophic geography of sharks
Sharks are a diverse group of mobile predators that forage across varied spatial scales and have the potential to influence food web dynamics. The ecological consequences of recent declines in shark biomass ma...
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Open AccessOptimal swimming strategies and behavioral plasticity of oceanic whitetip sharks
Animal behavior should optimize the difference between the energy they gain from prey and the energy they spend searching for prey. This is all the more critical for predators occupying the pelagic environment...
