A5081672511- Ichthyology and Marine Biology
- Fish Ecology and Management Studies
- Fish Biology and Ecology Studies
- Identification and Quantification in Food
- Marine and fisheries research
- Marine animal studies overview
- Coral and Marine Ecosystems Studies
- Marine Ecology and Invasive Species
- Underwater Vehicles and Communication Systems
- Fish biology, ecology, and behavior
- Genetics, Bioinformatics, and Biomedical Research
- Environmental Toxicology and Ecotoxicology
- Aquaculture Nutrition and Growth
- Physiological and biochemical adaptations
- Environmental DNA in Biodiversity Studies
- Marine and environmental studies
- Cephalopods and Marine Biology
- Microbial Community Ecology and Physiology
- Linguistic and Cultural Studies
- Medical Imaging Techniques and Applications
- Coastal and Marine Management
- Gene expression and cancer classification
- Oral and Maxillofacial Pathology
- Environmental and Biological Research in Conflict Zones
- Various Chemistry Research Topics
Albion College
1998-2023
Mote Marine Laboratory
2009
Kellogg's (Canada)
1998
University of Miami
1972-1976
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 declines 60 to 73% for five common individual were not detected at 34 47% surveyed reefs. As become more shark-depleted, rays begin dominate Shark-dominated assemblages persist wealthy nations with strong governance highly protected areas, whereas poverty, weak governance,...
Fifty mating events in free-living nurse sharks (Ginglymostoma cirratum) were observed over a nine-day period the Dry Tortugas island cluster Florida Keys. Four stages of identified: precoupling, coupling, positioning and alignment, insertion copulation. Copulation was filmed four events. Seminal fluid released into water obtained following one copulation showed presence free, nonpackaged sperm cells. At least 10 involved multiple males attempting with single females.
ESR Endangered Species Research Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsSpecials 10:71-82 (2010) - DOI: https://doi.org/10.3354/esr00247 Identifying shark mating behaviour using three-dimensional acceleration loggers Nicholas M. Whitney1,*, Harold L. Pratt Jr.2, Theo C. Pratt2, Jeffrey Carrier3 1Center for Shark Research, Mote Marine Laboratory, 1600 Ken Thompson Parkway, Sarasota, Florida 34236,...
Sharks are top predators in many marine ecosystems. Despite recent concerns over declines shark populations, studies of communities coastal habitats limited. We used drumlines and longlines to determine community composition habitat affinities the Florida Keys, USA. Community varied among habitats. Catch rates smaller sharks were highest protected shallow waters, while large more abundant deep channels. Overall probabilities catching on did not vary with water temperature, catches small...
ABSTRACT The marine teleost fish, Lagodon rhomboides, can only tolerate fresh water (5 mm Na) if Ca is also present (10 mm). Transfer to Ca-free followed by a substantial increase in radioactive Na efflux with little or no change the transepithelial potential. Addition of chelating agent EDTA (2 mm) further increases efflux. Fish left for 2·5 h die total body less than 50 % that found animals acclimated Ca-supplemented water. Rates uptake were measured on either sea-water-acclimated...
Abstract Over a period of 3 years, five reproductively active female nurse sharks ( Ginglymostoma cirratum ) from wild, actively mating population were captured, confined, and periodically examined through the course gestation to determine characterize paternity. In final year study, candidate animals first evaluated in field by ultrasonography, selected then transported study site holding facilities at SeaWorld Adventure Parks Orlando, Florida. Periodic monitoring was conducted endoscopy,...
ABSTRACT A technique has been developed for the measurement of electrical potentials (TGP ‘s) across gills free-swimming, Dormitator maculatus. Transfer fish to various KC1 solutions is correlated with changes in TGP, which are not sufficient magnitude account known potassium stimulation sodium efflux from this species. potassium-free sea water results little or no change TGP while previous have shown that such a transfer 22% reduction efflux. fresh + 17 mV (inside positive) −36...
Crittercam is an animal-borne imaging and environmental data-logging instrument used to study large vertebrates in aquatic habitats. This paper describes advanced system that records video, audio data solid-state digital media. fifth generation (“GenV”) smaller, much more rugged user-friendly, incorporates significantly greater capacity than previous video devices. The GenV also includes three-dimensional dive path logging capabilities by capturing magnetometry, accelerometry, water velocity...
Given the conservation status and ecological, cultural, commercial importance of chondrichthyan fishes, it is valuable to evaluate extent which research attention spread across taxa geographic locations assess degree scientific appropriately addressing challenges they face. Here we review trends in effort over three decades (1985–2016) through content analysis every abstract (n = 2,701) presented at annual conference American Elasmobranch Society (AES), oldest largest professional society...
Growth rates determined from recapture of free-ranging nurse sharks (Ginglymostoma cirratum) averaged 13.1 ? 9.5 cm/yr and 2.3 1.3 kg/yr based upon 44 tagged animals (28.9% recovery) with an average at-large interval 247 d (range: 5-876 d), size at tagging 126.6 cm TL 9.8 kg body mass. measurements on three captively maintained over a 3 yr period, resulted in growth that were slightly faster (19.1 4.9 4.0 1.7 kg/yr), but not significantly different. The captive study, however, revealed...
Understanding shark mating dynamics and site use may be vital to species management. The Dry Tortugas courtship ground (DTCMG) has been known as a for nurse sharks, Ginglymostoma cirratum , since 1895. In 30-yr (1992–2021) study we have documented long-term fidelity this area with data from 137 adult sharks (89 female, 48 male) tagged PIT, fin, acoustic tags. Of 118 1993 2014, at least 80 (68%) returned the DTCMG in subsequent years during June-July season. Known individuals up 16 different...