8 results match your criteria: "The Cape Eleuthera Institute[Affiliation]"

Species invasions threaten global biodiversity, and physiological characteristics may determine their impact. Specific dynamic action (SDA; the increase in metabolic rate associated with feeding and digestion) is one such characteristic, strongly influencing an animal's energy budget and feeding ecology. We investigated the relationship between SDA, scope for activity, metabolic phenotype, temperature and feeding frequency in lionfish ( spp.

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Identifying prey resource pools supporting fish biomass can elucidate trophic pathways of pollutant bioaccumulation. We used multiple chemical tracers (carbon [δC] and nitrogen [δN] stable isotopes and total mercury [THg]) to identify trophic pathways and measure contaminant loading in upper trophic level fishes residing at a reef and open-ocean interface near Eleuthera in the Exuma Sound, The Bahamas. We focused predominantly on the trophic pathways of mercury bioaccumulation in dolphinfish and wahoo , 2 commonly consumed pelagic sportfish in the region.

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Swimming performance of a freshwater fish during exposure to high carbon dioxide.

Environ Sci Pollut Res Int

February 2019

Department of Natural Resources and Environmental Sciences, University of Illinois at Urbana-Champaign, Champaign, IL, USA.

Deterring the spread of invasive fishes is a challenge for managers, and bigheaded carp (including bighead and silver carp, Hypophthalmichthys spp.) are invasive fish that have spread throughout large portions of the Mississippi River basin and threaten to invade the Great Lakes' ecosystem. Studies have shown that elevated levels of carbon dioxide gas (CO) have the ability to act as a nonphysical fish barrier, but little work has been done on the efficacy of CO to deter fish movement in flowing water.

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Article Synopsis
  • Birds, mammals, and certain fish like bluefin tunas can maintain internal body temperatures above their environment, which helps them thrive in colder waters.
  • Bluefin tunas are important for fisheries and face threats, while other tunas like yellowfin are more adaptable and reproduce faster.
  • Genetic analysis of over 29,000 genes shows that specific adaptations for endothermy in bluefin tunas are linked to certain genetic changes, highlighting the need for conservation efforts for some tuna species due to their distinct genetic makeup.
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Large-bodied pelagic ectotherms such as sharks need to maintain internal temperatures within a favourable range in order to maximise performance and be cost-efficient foragers. This implies that behavioural thermoregulation should be a key feature of the movements of these animals, although field evidence is limited. We used depth and temperature archives from pop-up satellite tags to investigate the role of temperature in driving vertical movements of 16 oceanic whitetip sharks, Carcharhinus longimanus, (OWTs).

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Comparative feeding ecology of the yellow ray Urobatis jamaicensis (Urotrygonidae) from The Bahamas.

J Fish Biol

January 2018

Shark Research and Conservation Program, The Cape Eleuthera Institute, EL-26029, Rock Sound, Eleuthera, The Bahamas.

Stomach contents were collected from 117 yellow rays Urobatis jamaicensis from three locations in south Eleuthera, The Bahamas and compared with ambient infauna via sediment surveys. Diets were relatively limited with a total of 535 prey items recovered, representing five taxonomic groups and dominated by polychaetes and decapod crustaceans (87% of total diet), while environmental sampling reported 5249 individual taxa represented by 62 taxonomic groups. Regardless of gravidity, sex or density of prey items among sites, no significant differences were detected.

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Despite the ecological and economic importance of the Caribbean reef shark (), little data exist regarding the movements and habitat use of this predator across its range. We deployed 11 pop-up satellite archival tags on Caribbean reef sharks captured in the northeast Exuma Sound, The Bahamas, to assess their horizontal and vertical movements throughout the water column. Sharks showed high site fidelity to The Bahamas suggesting Bahamian subpopulations remain protected within the Bahamian Shark Sanctuary.

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A new species of cirolanid isopod, Bathynomus maxeyorum sp. nov., from The Bahamas, Western Atlantic, is described.

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