Results 81 to 90 of about 16,645 (235)
Sentience in cephalopod molluscs: an updated assessment
Biological Reviews, Volume 101, Issue 3, Page 1311-1333, June 2026.ABSTRACT This article evaluates the evidence for sentience – the capacity to have feelings – in cephalopod molluscs: octopus, cuttlefish, squid, and nautilus. Our framework includes eight criteria, covering both whether the animal's nervous system could support sentience and whether their behaviour indicates sentience.
Alexandra K. Schnell +4 more
wiley +1 more source
Zoologia (Curitiba), 2018 Using track analysis and cladistic biogeography, we identified areas of endemism of hummingbirds in the Andean and Neotropical regions. Our results point out that the current areas of endemism of hummingbirds occur in the Andes, Guiana Shield, the Lesser
Daiane Ouvernay +2 more
doaj +1 more source
Biological Reviews, Volume 101, Issue 3, Page 1406-1462, June 2026.ABSTRACT Oropharyngeal food processing exhibits a remarkable diversity among vertebrates, reflecting the evolution of specialised ‘processing centres’ associated with the mandibular, hyoid, and branchial arches. Although studies have detailed various food‐processing strategies and mechanisms across vertebrates, a coherent and comprehensive terminology ...
Daniel Schwarz +6 more
wiley +1 more source
Brazilian Journal of BiologyThe hummingbird-visited plant community located on the open-habitat mountaintop of the Espinhaço Range was studied for two years (from August 2007 to July 2009) in Serra do Cipó National Park, Southeastern Brazil (19° 15′ S and 43° 31′ W).
LC Rodrigues, M Rodrigues
doaj +1 more source
Multiple Longitudinal Tracts in the Cephalopod Arm Sensorimotor System
Journal of Comparative Neurology, Volume 534, Issue 5, May 2026.Octopuses have a rich behavioral repertoire, coordinating complex movements along the length of an arm. The neural circuits controlling these behaviors are poorly understood. We employ tract‐tracing to investigate longitudinal tracts in the octopus arm.
Cassady S. Olson, Clifton W. Ragsdale
wiley +1 more source
Hypotheses for the Adaptive Maintenance of Phenotypic Polymorphisms
Ecology and Evolution, Volume 16, Issue 5, May 2026.Phenotypic polymorphisms offer easily observable diversity ideal for empirical and theoretical exploration, but developing and comparing hypotheses for the adaptive maintenance of polymorphism can be a challenge. Here, we propose a framework categorizing polymorphisms based on (i) one of five distinct types of maintenance selection and (ii) the context
Jay J. Falk +2 more
wiley +1 more source
Acta Botânica Brasílica, 2015 We studied the pollination biology of Canna paniculata (Cannaceae), a plant species common in the Atlantic Rainforest of southeastern Brazil. The species presents specialized ornithophilous flowers, which in our study area are solely pollinated by the ...
Pietro Kiyoshi Maruyama +3 more
doaj +1 more source
Respiratory Evaporative Water Loss During Hovering and Forward Flight in Hummingbirds
, 2012 Hummingbirds represent an end point for small body size and water flux in vertebrates. We explored the role evaporative water loss (EWL) plays in management of their large water pool and its use in dissipating metabolic heat.
Getsinger, Philip W +5 more
core +1 more source
International Journal of Geriatric Psychiatry, Volume 41, Issue 5, May 2026.ABSTRACT Objective To evaluate racial and ethnic representation and temporal trends in phase II–IV dementia clinical trials conducted in the United States, United Kingdom, and Canada. Methods We interrogated ClinicalTrials.gov for interventional dementia and Alzheimer's disease (AD) trials completed since 2000.
Daniel Kramarczyk +6 more
wiley +1 more source