Results 61 to 70 of about 94,183 (300)
Endangered Species ResearchAssessing the trophic relationships among sympatric marine predators is crucial for ecosystem and fisheries management. This study used carbon and nitrogen stable isotope analysis to elucidate resource use and sharing of dusky Carcharhinus obscurus ...
RS Lipscombe, V Raoult, PA Butcher
doaj +1 more source
An informational summary on elasmobranchs in Elkhorn Slough [PDF]
, 1994 Shark angling derbies have been held in Elkhorn Slough since 1946, and archery derbies since about 1973. Elkhorn Slough is an important pupping and breeding area for leopard sharks, Triakis semifasciata, and bat rays, Myliobatis californica, and a ...
Spratt, Jerome D.
core
Dental crown morphological variation and heterodonty in carcharhiniform sharks
The Anatomical Record, EarlyView.Abstract Elasmobranch teeth are highly mineralized structures that constitute the majority of the fossil record for this group. Despite their taxonomic and evolutionary significance, detailed descriptions of dental morphology remain scarce. The order Carcharhiniformes, the most diverse among sharks, comprises 304 valid species that display remarkable ...
Flávia Zanini, Karla D. A. Soares
wiley +1 more source
Sharks for the Aquarium and Considerations for Their Selection
EDIS, 2011 Sharks are magnificent animals and an exciting group of fishes. And they are becoming increasingly popular as pet animals. The proper care and display of sharks requires great attention to details.
Alexis L. Morris +2 more
doaj +5 more sources
Scalloped hammerhead sharks swim on their side with diel shifts in roll magnitude and periodicity
Animal Biotelemetry, 2020 Background Great hammerhead sharks (Sphyrna mokarran) routinely swim on their sides and periodically roll from side to side. A previous study used wind tunnel tests with a rigid model hammerhead shark to demonstrate that the rolling behavior could ...
Mark Royer +8 more
doaj +1 more source
Length at maturity in three pelagic sharks (Lamna nasus, Isurus oxyrinchus, and Prionace glauca) from New Zealand [PDF]
, 2005 Reproductive data collected from porbeagle, shortfin mako, and blue sharks caught around New Zealand were used to estimate the median length at maturity.
Duffy, Clinton, Francis, Malcolm P.
core
The Anatomical Record, EarlyView.Abstract Belonostomus longirostrisis was named for an isolated jaw fragment from freshwater Upper Cretaceous (Campanian) sediments of the Dinosaur Park Formation of Alberta, Canada. Following the description of the Albertan species, numerous isolated cranial and postcranial elements have been collected from the Dinosaur Park Formation and assigned to B.
Mondo Miyazato +4 more
wiley +1 more source
European Shark Fisheries: A Preliminary Investigation into Fisheries, Conversion Factors, Trade Products, Markets and Management Measures [PDF]
, 2007 Recommends new regulations to prevent shark finning -- an illegal practice in which a shark's fins are removed and its carcass dumped at sea -- and stresses the urgent need for effective shark conservation ...
Bernard Seret +11 more
core
The Anatomical Record, EarlyView.Abstract The Aliança Formation (Jatobá Basin) represents lacustrine deposits formed in oxygenated waters that hosted a diverse fauna, including Hybodontiform sharks. Within this group, the Family Lonchidiidae comprises 11 valid genera, with Parvodus previously reported in Brazilian deposits from the Brejo Santo Formation (Araripe Basin, Late Jurassic ...
Larissa de Souza Ribeiro +1 more
wiley +1 more source
Seabirds mediate intraguild and competitive interactions in a shark community
EcosphereIntraguild predation (IGP) and competition significantly influence resource utilization patterns among sympatric species. The presence of alternative prey (consumed only by intraguild [IG] predators and not IG prey) may promote coexistence and have a ...
Chloé A. Blandino +3 more
doaj +1 more source