Results 41 to 50 of about 16,641 (277)
Beluga, Delphinapterus leucas, Distribution and Survey Effort in the Gulf of Alaska [PDF]
, 2000 Beluga, Delphinapterus leucas, distribution in the Gulf of Alaska and adjacent inside waters was examined through a review of surveys conducted as far back as 1936.
Laidre, Kristin L. +3 more
core
Cementum structure in Beluga whale teeth [PDF]
Acta Biomaterialia, 2017 A large fraction of the volume of Beluga whale (Delphinapterus leucas) teeth consists of cementum, a mineralized tissue which grows throughout the life of the animal and to which the periodontal ligaments attach. Annular growth bands or growth layer groups (GLGs) form within Beluga cementum, and this study investigates GLG structure using X-ray ...
S R, Stock +5 more
openaire +2 more sources
Intraspecific variation of cochlear morphology in bowhead and beluga whales
The Anatomical Record, EarlyView.Abstract The bony labyrinth of the petrosal bone, a distinctive feature of mammal skulls, is often identified in micro‐computed tomography imaging to infer species' physiological and ecological traits. When done as part of a comparative study, one individual specimen is normally considered representative of a species, and intraspecific variation is ...
John Peacock, J. G. M. Thewissen
wiley +1 more source
Recent advances in sturgeon nutrition. [PDF]
, 2017 Sturgeons are fish species of biological and economical importance, and most of them are endangered, vulnerable or rare because of their large size, late sexual maturity, long period between spawning, and longevity.
Hung, Silas SO
core +2 more sources
Mapping molluscan endocrinology: a systematic and critical appraisal
Biological Reviews, EarlyView.ABSTRACT Historically, a vertebrate‐centric paradigm has framed our interpretation of molluscan endocrinology, with considerable research focusing on vertebrate‐type steroid hormones (e.g. oestrogens, testosterone). However, contradictory evidence on the occurrence of vertebrate‐type steroid hormones in molluscan tissues, and a lack of the specific ...
Konstantinos Panagiotidis +3 more
wiley +1 more source
Revegetation Research on Coal Mine Overburden Materials in Interior to Southcentral Alaska [PDF]
, 1987 This report was reprinted from Focus on Alaska's Coal '86: Proceedings of the Conference MIRL Report Number 72. The pagination in the original publication has been retained.
Mitchell, Wm. W.
core
Predators and scavengers: Polar bears as marine carrion providers
Oikos, EarlyView.Scavenging is a foraging strategy widely used across the animal kingdom and apex predators provide a large amount of energy in a food web by provisioning carrion. In the harsh environmental conditions of the Arctic, apex predators such as polar bears Ursus maritimus can provide scavenging opportunities for many species. Carrion can act as a buffer when
Holly E. L. Gamblin +5 more
wiley +1 more source
Concentrations of Polychlorinated Biphenyls (PCB’s), Chlorinated Pesticides, and Heavy Metals and Other Elements in Tissues of Belugas, Delphinapterus leucas, from Cook Inlet [PDF]
, 2000 Tissues from Cook Inlet beluga whales, Delphinapterus leucas, that were collected as part of the Alaska Marine Mammal Tissue Archival Project were analyzed for polychlorinated biphenyls (PCB’s), chlorinated pesticides, and heavy metals and other elements.
Becker, Paul R. +9 more
core
River Research and Applications, EarlyView.ABSTRACT Three sturgeon species—the common European (A. sturio), beluga (H. huso), and Adriatic sturgeon (A. naccarii)—coexisted in the Po River Basin until the mid‐1970s, representing centuries of bio‐cultural heritage for northern Italy's riverine communities.
Samuele Pagani +5 more
wiley +1 more source
Scientific Reports, 2022 Botulinum neurotoxins (BoNTs), produced by the spore-forming bacterium Clostridium botulinum, cause botulism, a rare but fatal illness affecting humans and animals.
Maria B. Nowakowska +10 more
doaj +1 more source