Results 61 to 70 of about 113,359 (301)

Behavioral and Endocrine Change Following Chronic Predatory Stress

open access: yesPhysiology & Behavior, 1998
Adult male rats showed very high levels of crouching when exposed to a cat, with suppression of the nondefensive behaviors (e.g., lying, locomotion, rearing) that were shown by toy cat-exposed controls. The crouching of cat-exposed rats declined slightly but reliably with increasing time within daily 60-min exposure sessions.
R J, Blanchard   +5 more
openaire   +2 more sources

Rippling Is a Predatory Behavior in Myxococcus xanthus [PDF]

open access: yesJournal of Bacteriology, 2006
ABSTRACT Cells of Myxococcus xanthus will, at times, organize their movement such that macroscopic traveling waves, termed ripples, are formed as groups of cells glide together on a solid surface. The reason for this behavior has long been a mystery, but we demonstrate here that rippling is a feeding ...
James E, Berleman   +3 more
openaire   +2 more sources

Functional morphology of the pharyngeal teeth of the ocean sunfish, Mola mola

open access: yesThe Anatomical Record, EarlyView.
Abstract Many fish use a set of pharyngeal jaws in their throat to aid in prey capture and processing, particularly of large or complex prey. In this study—combining dissection, CT scanning, histology, and performance testing—we demonstrate a novel use of pharyngeal teeth in the ocean sunfish (Mola mola), a species for which pharyngeal jaw anatomy had ...
Benjamin Flaum   +3 more
wiley   +1 more source

Histovariability and fossil diagenesis of Pissarrachampsa (Pseudosuchia, Notosuchia, Baurusuchidae) from the Upper Cretaceous of Southeast Brazil

open access: yesThe Anatomical Record, EarlyView.
Abstract Notosuchians were key components of western Gondwanan Cretaceous ecosystems in terrestrial predator niches and exhibited remarkable taxonomic and ecological diversity. Previous research has explored their physiology, metabolism, and histology, revealing varied growth patterns and life history strategies.
Tito Aureliano   +5 more
wiley   +1 more source

Trichobothrial mediation of an aquatic escape response: Directional jumps by the fishing spider, Dolomedes triton, foil frog attacks

open access: yesJournal of Insect Science, 2003
Fishing spiders (Pisauridae) frequent the surfaces of ponds and streams and thereby expose themselves to predation by a variety of aquatic and semi-aquatic vertebrates. To assess the possibility that the impressive jumps of fishing spiders from the water
Robert B. Suter
doaj  

Psychometric Properties and Development of a Scale Designed to Evaluate the Potential of Predatory Violent Behavior

open access: yesFrontiers in Psychology, 2019
The objective of this study was to develop and determine the psychometric properties of an instrument designed to detect traits and behavior that are associated with predatory violent behavior, which is defined as a determined, planned, controlled, and ...
Julio C. Penagos-Corzo   +3 more
doaj   +1 more source

Biology and Predatory Behavior of Metioche Vittaticollis (Stal) (Orthoptera: Gryllidae) [PDF]

open access: yes, 2012
Metioche vittaticollis (Stal) is one of the generalist predator in rice field habitat. The biology and predatory behavior were studied in the laboratory. The life cycle of M. vittaticollis (Stal) averaged 40–61 days at 26°-28oC.
Karindah, S. (Sri)   +2 more
core  

T. rex cognition was T. rex‐like—A critical outlook on diverging views of the neurocognitive evolution in dinosaurs

open access: yesThe Anatomical Record, EarlyView.
Abstract A recent debate has emerged between Caspar et al. (2024) and Herculano‐Houzel (2023) on inferring extinct dinosaur cognition by estimating brain neuron counts. While thought‐provoking, the discussion largely overlooks the function of cognition, as well as partly neglects the difficulties involved in estimating neuron numbers, which according ...
Thomas Rejsenhus Jensen   +7 more
wiley   +1 more source

Comparative analysis of optional hunting behavior in Cricetinae hamsters using the data compression approach

open access: yesFrontiers in Zoology
Research into the hunting behavior in members of the Cricetidae family offers an opportunity to reveal what changes in the predatory behavioral sequences occur when a rodent species shifts from an omnivorous to a predatory lifestyle.
J. Levenets   +6 more
doaj   +1 more source

The mechanistic basis of Myxococcus xanthus rippling behavior and its physiological role during predation. [PDF]

open access: yesPLoS Computational Biology, 2012
Myxococcus xanthus cells self-organize into periodic bands of traveling waves, termed ripples, during multicellular fruiting body development and predation on other bacteria. To investigate the mechanistic basis of rippling behavior and its physiological
Haiyang Zhang   +5 more
doaj   +1 more source

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