Results 91 to 100 of about 196,517 (325)

Histology and fossil diagenesis of a pterosaur tooth from the Crato Formation (Lower Cretaceous of Brazil)

The Anatomical Record, EarlyView.
Abstract Pterosaur dental biology remains poorly understood despite its importance for comprehending feeding strategies and flight adaptations. Here, we present the first comprehensive histological analysis of an ornithocheiriform pterosaur tooth from the Lower Cretaceous Crato Formation (Santana Group, Northeast Brazil).
Tito Aureliano, Matheus P. S. Rocha, Francisco P. Lima‐Filho, Aline M. Ghilardi   +3 more
wiley   +1 more source

Indigenous communities and marine mammal tourism management: incorporating the perspectives of the indigenous Māori people of Aotearoa/New Zealand

Frontiers in Sustainable Tourism
IntroductionMany coastal and island indigenous people have long-standing important relationships with marine mammals. In many cases whales and dolphins have been viewed as spiritual beings with strong connections to indigenous people's histories, and ...
Yasmine M. Elmahdy, Mark Orams, Michael Lück, Heike Schänzel   +3 more
doaj   +1 more source

Transitions of social-ecological subsistence systems in the Arctic [PDF]

, 2017
Transitions of social-ecological systems (SES) expose governance systems to new challenges. This is particularly so in the Arctic where resource systems are increasingly subjected to global warming, industrial development and globalization which ...
Clark, Douglas A., Fauchald, Per, Hausner, Vera, Schmidt, Jennifer   +3 more
core   +4 more sources

Does salinity make a difference—Kidney anatomy of Saimaa (Pusa saimensis) and Baltic ringed seals (Pusa hispida botnica)

The Anatomical Record, EarlyView.
Abstract As habitat salinity markedly differs between the endangered, freshwater‐dwelling Saimaa ringed seal (Pusa saimensis Nordquist, 1899) and the brackish water‐inhabiting Baltic ringed seal (Pusa hispida botnica Gmelin, 1788), we investigated whether this difference has resulted in morphological changes to their kidneys.
Heini Nihtilä, Juha Laakkonen
wiley   +1 more source

Ex vivo and in vitro methods as a platform for studying anthropogenic effects on marine mammals: four challenges and how to meet them

Frontiers in Marine Science
Marine mammals are integral to global biodiversity and marine health through their roles in coastal, benthic, and pelagic ecosystems. Marine mammals face escalating threats from climate change, pollution, and human activities, which perturb their oceanic
Juan Manuel Vazquez, Jane I. Khudyakov, Carla B. Madelaire, Céline A. Godard-Codding, Heli Routti, Emily K. Lam, Elizabeth R. Piotrowski, Greg B. Merrill, Jillian H. Wisse, Kaitlin N. Allen, Justin Conner, Pierre Blévin, Demetri D. Spyropoulos, Anders Goksøyr, José Pablo Vázquez-Medina   +14 more
doaj   +1 more source

Effects of the Santa Barbara, Calif., Oil Spill on the Apparent Abundance of Pelagic Fishery Resources [PDF]

, 1992
Many studies have been made of the effects of oil on marine invertebrates, plants (marine algae and phytoplankton), and vertebrates such as seabirds and marine mammals.
Squire, Jr. , James L.
core  

Patterns of spinal motion, kinematic spaces and the land‐to‐sea transition in carnivorans

The Anatomical Record, EarlyView.
Using 3D reconstructions, we quantify intervertebral joint mobility to investigate how cervical, thoracic, and lumbar vertebral regions evolved distinct kinematic roles in pinnipeds. The findings reveal lineage‐specific adaptations for swimming and highlight the functional significance of vertebral joint flexibility in ecological transitions.
Juan Miguel Esteban, Alberto Martín‐Serra, Alejandro Pérez‐Ramos, Borja Figueirido   +3 more
wiley   +1 more source

भारत की समुद्री स्तनियां (Marine Mammal Species of India) [PDF]

, 2013
Central Marine Fisheries Research Institute has collected and published information on occasional strandings, sightings and gear entanglement of marine mammals for more than 50 years from a vast network of trained field staff located at its research and ...
Jeyabaskaran, R, Vivekanandan, E
core  

Production and Formulation of Alcanivorax borkumensis SK2 Cell Powders for Marine Oil Spill Bioremediation

Biotechnology and Applied Biochemistry, EarlyView.
Abstract Oil spills pose severe threats to marine ecosystems and coastal communities. Alcanivorax borkumensis SK2, a marine bacterium with superior hydrocarbon‐degrading capabilities, emerges as a promising agent for bioremediation. This study identified an economical growth substrate for A.
Élisabeth Perreault, Denis Groleau, Patrick Vermette   +2 more
wiley   +1 more source

Enhanced Production of Astaxanthin and Zeaxanthin by Paracoccus Sp. LL1 Through Random Mutagenesis

Biotechnology and Applied Biochemistry, EarlyView.
ABSTRACT Astaxanthin, a high‐value carotenoid with potent antioxidant and anti‐inflammatory activities, is increasingly in demand in various industries. This study reports the successful enhancement of astaxanthin and zeaxanthin production in Paracoccus sp. LL1 through random mutagenesis using ethyl methanesulfonate (EMS).
Anoth Maharjan, Beom Soo Kim
wiley   +1 more source