33 results match your criteria: "Center for Shark Research[Affiliation]"
Sci Adv
October 2024
Center for Shark Research, Mote Marine Laboratory, Sarasota, FL 34236, USA.
Many shark species have been overexploited for international markets, including fins for shark fin soup in Southeast Asia. Previous studies highlighted the value of large, threatened shark species, regulated under CITES Appendix II. However, sampling biases may have overlooked small shark species.
View Article and Find Full Text PDFScience
June 2023
Institute of Environment, Department of Biological Sciences, Florida International University, North Miami, FL, USA.
A global survey of coral reefs reveals that overfishing is driving resident shark species toward extinction, causing diversity deficits in reef elasmobranch (shark and ray) assemblages. Our species-level analysis revealed global declines of 60 to 73% for five common resident reef shark species and that individual shark species were not detected at 34 to 47% of surveyed reefs. As reefs become more shark-depleted, rays begin to dominate assemblages.
View Article and Find Full Text PDFAnim Microbiome
March 2022
Department of Microbiology & Cell Biology, Montanta State University, 621 Leon Johnson Hall, Bozeman, MT, 59717, USA.
Background: Sharks play essential roles in ocean food webs and human culture, but also face population declines worldwide due to human activity. The relationship between sharks and the microbes on and in the shark body is unclear, despite research on other animals showing the microbiome as intertwined with host physiology, immunity, and ecology. Research on shark-microbe interactions faces the significant challenge of sampling the largest and most elusive shark species.
View Article and Find Full Text PDFPLoS One
November 2021
Center for Shark Research, Mote Marine Laboratory, Sarasota, Florida, United States of America.
Bycatch mortality is a major factor contributing to shark population declines. Post-release mortality (PRM) is particularly difficult to quantify, limiting the accuracy of stock assessments. We paired blood-stress physiology with animal-borne accelerometers to quantify PRM rates of sharks caught in a commercial bottom longline fishery.
View Article and Find Full Text PDFNature
July 2021
Marine Biological Association of the United Kingdom, Plymouth, UK.
Nature
July 2021
Marine Biological Association of the United Kingdom, Plymouth, UK.
Mol Ecol
December 2020
Molecular Ecology and Fisheries Genetics Laboratory, Bangor University, Bangor, UK.
Nature
September 2020
ARC Centre of Excellence in Coral Reef Studies, James Cook University, Townsville, Queensland, Australia.
An Amendment to this paper has been published and can be accessed via a link at the top of the paper.
View Article and Find Full Text PDFNature
July 2020
ARC Centre of Excellence in Coral Reef Studies, James Cook University, Townsville, Queensland, Australia.
Decades of overexploitation have devastated shark populations, leaving considerable doubt as to their ecological status. Yet much of what is known about sharks has been inferred from catch records in industrial fisheries, whereas far less information is available about sharks that live in coastal habitats. Here we address this knowledge gap using data from more than 15,000 standardized baited remote underwater video stations that were deployed on 371 reefs in 58 nations to estimate the conservation status of reef sharks globally.
View Article and Find Full Text PDFNature
August 2019
Marine Biological Association of the United Kingdom, Plymouth, UK.
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 at a global scale. Here we show, using a big-data approach that combines satellite-tracked movements of pelagic sharks and global fishing fleets, that 24% of the mean monthly space used by sharks falls under the footprint of pelagic longline fisheries.
View Article and Find Full Text PDFJ Exp Biol
February 2017
Centre for Fish and Fisheries Research, Murdoch University, 90 South Street, Murdoch, WA 6150, Australia.
The ability to produce estimates of the metabolic rate of free-ranging animals is fundamental to the study of their ecology. However, measuring the energy expenditure of animals in the field has proved difficult, especially for aquatic taxa. Accelerometry presents a means of translating metabolic rates measured in the laboratory to individuals studied in the field, pending appropriate laboratory calibrations.
View Article and Find Full Text PDFZoology (Jena)
February 2017
University of South Florida, Department of Integrative Biology, 4202 E. Fowler Ave., Tampa, FL 33620, USA.
The ability of predators to modulate prey capture in response to the size, location, and behavior of prey is critical to successful feeding on a variety of prey types. Modulating in response to changes in sensory information may be critical to successful foraging in a variety of environments. Three shark species with different feeding morphologies and behaviors were filmed using high-speed videography while capturing live prey: the ram-feeding blacktip shark, the ram-biting bonnethead, and the suction-feeding nurse shark.
View Article and Find Full Text PDFPLoS One
June 2016
Center for Shark Research, Mote Marine Laboratory, Sarasota, Florida, United States of America.
The whale shark (Rhincodon typus) is a wide-ranging, filter-feeding species typically observed at or near the surface. This shark's sub-surface habits and behaviors have only begun to be revealed in recent years through the use of archival and satellite tagging technology. We attached pop-up satellite archival transmitting tags to 35 whale sharks in the southeastern Gulf of Mexico off the Yucatan Peninsula from 2003-2012 and three tags to whale sharks in the northeastern Gulf off Florida in 2010, to examine these sharks' long-term movement patterns and gain insight into the underlying factors influencing their vertical habitat selection.
View Article and Find Full Text PDFGen Comp Endocrinol
December 2015
Department of Integrative Biology, University of South Florida, 4202 East Fowler Avenue, Tampa, FL 33620, USA.
As demonstrated in past studies, androgens appear to play critical roles in regulating reproduction in male sharks. However, little is known about the cell-specific actions of androgens in these fishes. To address this, this study examined androgen targets in reproductive organs of a seasonally reproducing shark, the bonnethead (Sphyrna tiburo).
View Article and Find Full Text PDFIntegr Comp Biol
September 2015
Center for Shark Research, Mote Marine Laboratory, 1600 Ken Thompson Parkway, Sarasota, FL 34236, USA.
Animal navigation in the marine environment is believed to be guided by different sensory cues over different spatial scales. Geomagnetic cues are thought to guide long-range navigation, while visual or olfactory cues allow animals to pinpoint precise locations, but the complete behavioral sequence is not yet understood. Terra Ceia Bay is a primary nursery area for blacktip sharks, Carcharhinus limbatus, on southwestern Florida's Gulf of Mexico coast.
View Article and Find Full Text PDFJ Hered
August 2015
From the California Academy of Sciences, Center for Comparative Genomics, San Francisco, CA 94118 (Sellas and Bernal); the Mote Marine Laboratory, The Center for Shark Research, Sarasota, FL 34236 (Bassos-Hull and Hueter); the Laboratorio de Pesquerías Artesanales, Departamento de Ciencias de la Sustentabilidad, ECOSUR, Unidad Campeche, Av. Rancho Polígono 2-A, Ciudad Industrial, Cp. 24500, Lerma, Campeche, México (Pérez-Jiménez); the Centro de Investigaciones Marinas, Universidad de la Habana, Miramar, Playa. La Habana, Cuba (Angulo-Valdés); and the University of Texas Marine Science Institute, Port Aransas, TX 78373 (Bernal).
Few studies have reported on the fine-scale population genetics of batoid species in the Atlantic basin. Here, we investigate the genetic diversity and population structure of the spotted eagle ray, Aetobatus narinari, sampled in the northeastern and southwestern parts of the Gulf of Mexico and in the northwestern Caribbean Sea. Samples were collected from 286 individuals sampled across 3 geographic localities.
View Article and Find Full Text PDFPLoS One
February 2015
University of South Florida, Department of Integrative Biology, Tampa, Florida, United States of America.
The underwater sensory world and the sensory systems of aquatic animals have become better understood in recent decades, but typically have been studied one sense at a time. A comprehensive analysis of multisensory interactions during complex behavioral tasks has remained a subject of discussion without experimental evidence. We set out to generate a general model of multisensory information extraction by aquatic animals.
View Article and Find Full Text PDFPLoS One
April 2014
Center for Shark Research, Mote Marine Laboratory, Sarasota, Florida, United States of America.
Whale sharks, Rhincodon typus, aggregate by the hundreds in a summer feeding area off the northeastern Yucatan Peninsula, Mexico, where the Gulf of Mexico meets the Caribbean Sea. The aggregation remains in the nutrient-rich waters off Isla Holbox, Isla Contoy and Isla Mujeres, Quintana Roo for several months in the summer and then dissipates between August and October. Little has been known about where these sharks come from or migrate to after they disperse.
View Article and Find Full Text PDFSci Total Environ
July 2013
Center for Shark Research, Mote Marine Laboratory, 1600 Ken Thompson Parkway, Sarasota, FL 34236, USA.
The presence of human pharmaceuticals in sewage-impacted ecosystems is a growing concern that poses health risks to aquatic wildlife. Despite this, few studies have investigated the uptake of active pharmaceutical ingredients (APIs) in aquatic organisms. In this study, the uptake of 9 APIs from human drugs was examined and compared in neonate bull sharks (Carcharhinus leucas) residing in pristine (Myakka River) and wastewater-impacted (Caloosahatchee River) tributaries of Florida's Charlotte Harbor estuary.
View Article and Find Full Text PDFPLoS One
February 2011
Center for Shark Research, Mote Marine Laboratory, Sarasota, Florida, United States of America.
To aid recovery efforts of smalltooth sawfish (Pristis pectinata) populations in U.S. waters a research project was developed to assess how changes in environmental conditions within estuarine areas affected the presence, movements, and activity space of this endangered species.
View Article and Find Full Text PDFToxicon
January 2009
Marine Immunology Program, Center for Shark Research, Mote Marine Laboratory, 1600 Ken Thompson Parkway, Sarasota, FL 34236, United States.
Mar Drugs
June 2008
Marine Immunology Program, Center for Shark Research, Mote Marine Laboratory, Sarasota, FL 34236, USA.
Mar Pollut Bull
February 2008
Elasmobranch Physiology and Environmental Biology Program, Center for Shark Research, Mote Marine Laboratory, Sarasota, FL 34236, USA.
Comp Biochem Physiol A Mol Integr Physiol
December 2007
Center for Shark Research, Mote Marine Laboratory, Sarasota, Florida 34236, USA.
Serum corticosterone was previously studied in numerous elasmobranch fishes (sharks, skates and rays), but the role of this steroid, widespread throughout many taxa, has yet to be defined. The goal of this study was to test whether corticosterone varied in response to acute and chronic capture stress, and across the reproductive cycle in the bonnethead shark, Sphyrna tiburo, and Atlantic stingray, Dasyatis sabina. Serum corticosterone in S.
View Article and Find Full Text PDFChemosphere
June 2006
Elasmobranch Physiology and Environmental Biology Program, Center for Shark Research, Mote Marine Laboratory, 1600 Ken Thompson Parkway, Sarasota, FL 34236, USA.
Within the past decade, reproductive and health disorders have been reported to occur in unique populations of Atlantic stingrays (Dasyatis sabina) inhabiting certain components of Florida's St. Johns River. Since these irregularities are consistent with the alleged effects of organochlorine (OC) contaminant exposure in other Florida wildlife, the goal of this study was to examine possible associations between OC concentrations and reproduction and/or immune function in stingrays from this river system.
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