Suchergebnisse - "Chapman, Demian D."

Environmental DNA reveals tropical shark diversity in contrasting levels of anthropogenic impact von Bakker, Judith, Wangensteen, Owen S., Chapman, Demian D., Boussarie, Germain, Buddo, Dayne, Guttridge, Tristan L., Hertler, Heidi, Mouillot, David, Vigliola, Laurent, Mariani, Stefano

“… Sharks are charismatic predators that play a key role in most marine food webs. Their demonstrated vulnerability to exploitation has recently turned them into …”
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Species composition of the international shark fin trade assessed through a retail-market survey in Hong Kong von Fields, Andrew T., Fischer, Gunter A., Shea, Stanley K. H., Zhang, Huarong, Abercrombie, Debra L., Feldheim, Kevin A., Babcock, Elizabeth A., Chapman, Demian D.

“… The shark fin trade is a major driver of shark exploitation in fisheries all over the world, most of which are not managed on a species-specific basis …”
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Two thirds of species in a global shark fin trade hub are threatened with extinction: Conservation potential of international trade regulations for coastal sharks von Cardeñosa, Diego, Shea, Stanley K., Zhang, Huarong, Fischer, Gunter A., Simpfendorfer, Colin A., Chapman, Demian D.

“… One third of chondrichthyan species (sharks, rays, and chimeras) are threatened with extinction, mainly due to unsustainable fishing. Large accessible …”
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A Novel Mini-DNA Barcoding Assay to Identify Processed Fins from Internationally Protected Shark Species von Fields, Andrew T., Abercrombie, Debra L., Eng, Rowena, Feldheim, Kevin, Chapman, Demian D.

“… There is a growing need to identify shark products in trade, in part due to the recent listing of five commercially important species on the Appendices of the …”
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Environmental DNA detection tracks established seasonal occurrence of blacktip sharks (Carcharhinus limbatus) in a semi-enclosed subtropical bay von Postaire, Bautisse D., Bakker, Judith, Gardiner, Jayne, Wiley, Tonya R., Chapman, Demian D.

“… The integration of eDNA analysis into the population assessment and monitoring of sharks could greatly improve temporal and spatial data used for management …”
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A multiplex PCR mini-barcode assay to identify processed shark products in the global trade von Cardeñosa, Diego, Fields, Andrew, Abercrombie, Debra, Feldheim, Kevin, Shea, Stanley K. H., Chapman, Demian D.

“… Protecting sharks from overexploitation has become global priority after widespread population declines have occurred. Tracking catches and trade on a …”
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Reef Sharks Exhibit Site-Fidelity and Higher Relative Abundance in Marine Reserves on the Mesoamerican Barrier Reef von Bond, Mark E., Babcock, Elizabeth A., Pikitch, Ellen K., Abercrombie, Debra L., Lamb, Norlan F., Chapman, Demian D.

“… Carcharhinid sharks can make up a large fraction of the top predators inhabiting tropical marine ecosystems and have declined in many regions due to intense …”
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Individual differences in diel and vertical activity patterns in a large pelagic predator, the oceanic whitetip shark von Papastamatiou, Yannis P., Leos-Barajas, Vianey, Howey, Lucy, Brooks, Edd, Chapman, Demian D., Watanabe, Yuuki

“… Diel activity patterns and fine-scale behavior of large pelagic fishes have been poorly studied relative to their coastal counterparts. In particular, little …”
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CITES‐listed sharks remain among the top species in the contemporary fin trade von Cardeñosa, Diego, Fields, Andrew T., Babcock, Elizabeth A., Zhang, Huarong, Feldheim, Kevin, Shea, Stanley K. H., Fischer, Gunter A., Chapman, Demian D.

“… Trade‐driven overexploitation threatens many sharks. Twelve of the world's most vulnerable shark species have been listed on the Convention on International …”
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Complex Movements, Philopatry and Expanded Depth Range of a Severely Threatened Pelagic Shark, the Oceanic Whitetip (Carcharhinus longimanus) in the Western North Atlantic von Howey-Jordan, Lucy A., Brooks, Edward J., Abercrombie, Debra L., Jordan, Lance K. B., Brooks, Annabelle, Williams, Sean, Gospodarczyk, Emily, Chapman, Demian D.

“… Oceanic whitetip sharks (Carcharhinus longimanus) have recently been targeted for conservation in the western North Atlantic following severe declines in …”
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Biodiversity assessment of tropical shelf eukaryotic communities via pelagic eDNA metabarcoding von Bakker, Judith, Wangensteen, Owen S., Baillie, Charles, Buddo, Dayne, Chapman, Demian D., Gallagher, Austin J., Guttridge, Tristan L., Hertler, Heidi, Mariani, Stefano

“… Our understanding of marine communities and their functions in an ecosystem relies on the ability to detect and monitor species distributions and abundances …”
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Supplemental Feeding for Ecotourism Reverses Diel Activity and Alters Movement Patterns and Spatial Distribution of the Southern Stingray, Dasyatis americana von Corcoran, Mark J., Wetherbee, Bradley M., Shivji, Mahmood S., Potenski, Matthew D., Chapman, Demian D., Harvey, Guy M.

“… Southern stingrays, Dasyatis americana, have been provided supplemental food in ecotourism operations at Stingray City Sandbar (SCS), Grand Cayman since 1986, …”
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Optimal swimming strategies and behavioral plasticity of oceanic whitetip sharks von Papastamatiou, Yannis P., Iosilevskii, Gil, Leos-Barajas, Vianey, Brooks, Edd J., Howey, Lucy A., Chapman, Demian D., Watanabe, Yuuki Y.

“… 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 …”
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Elasmobranch diversity around the southern Caribbean island of Tobago: opportunities for conservation in a regional trade hub von Cook, Neil D., Clementi, Gina M., Flowers, Kathryn I., Fanovich, Lanya, Cable, Jo, Perkins, Sarah E., Wothke, Aljoscha, Mohammed, Ryan S., Chapman, Demian D.

“… Sharks are scarce in much of the Caribbean due to widespread depletion. Trinidad and Tobago, in the southern Caribbean, is a shark meat consumer and …”
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Severe Inbreeding and Small Effective Number of Breeders in a Formerly Abundant Marine Fish von O'Leary, Shannon J., Hice, Lyndie A., Feldheim, Kevin A., Frisk, Michael G., McElroy, Anne E., Fast, Mark D., Chapman, Demian D.

“… In contrast to freshwater fish it is presumed that marine fish are unlikely to spawn with close relatives due to the dilution effect of large breeding …”
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Indo‐Pacific origins of silky shark fins in major shark fin markets highlights supply chains and management bodies key for conservation von Cardeñosa, Diego, Fields, Andrew T., Babcock, Elizabeth, Shea, Stanley K. H., Feldheim, Kevin A., Kraft, Derek W., Hutchinson, Melanie, Herrera, Maria A., Caballero, Susana, Chapman, Demian D.

“… The silky shark is the second most common shark in Southeast Asia's dried fin markets and is managed in the Atlantic Ocean by the International Commission for …”
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Regional-Scale Migrations and Habitat Use of Juvenile Lemon Sharks (Negaprion brevirostris) in the US South Atlantic von Reyier, Eric A., Franks, Bryan R., Chapman, Demian D., Scheidt, Douglas M., Stolen, Eric D., Gruber, Samuel H.

“… Resolving the geographic extent and timing of coastal shark migrations, as well as their environmental cues, is essential for refining shark management …”
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Virgin birth in a hammerhead shark von Chapman, Demian D, Shivji, Mahmood S, Louis, Ed, Sommer, Julie, Fletcher, Hugh, Prodöhl, Paulo A

“… Parthenogenesis has been documented in all major jawed vertebrate lineages except mammals and cartilaginous fishes (class Chondrichthyes: sharks, batoids and …”
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Bite, swab, identify: Validating molecular tools for detecting depredating shark species von Cardeñosa, Diego, Grogan, Phillip A., Chapman, Demian D.

“… Depredation, the partial or complete removal of hooked fish by predators, poses significant challenges for fisheries worldwide. Shark depredation in …”
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A Streamlined DNA Tool for Global Identification of Heavily Exploited Coastal Shark Species (Genus Rhizoprionodon) von Pinhal, Danillo, Shivji, Mahmood S., Nachtigall, Pedro G., Chapman, Demian D., Martins, Cesar

“… Obtaining accurate species-specific landings data is an essential step toward achieving sustainable shark fisheries. Globally distributed sharpnose sharks …”
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