Results 61 to 70 of about 1,146 (178)

Inference on state occupancy in covariate‐driven hidden Markov models

Methods in Ecology and Evolution, Volume 17, Issue 8, Page 2436-2448, August 2026.
Abstract Hidden Markov models (HMMs) are natural and popular tools for analysing animal behaviour based on movement, acceleration and other sensor data. In particular, these models make it possible to infer how the animal's decision‐making process interacts with internal and external drivers by relating the probabilities of switching between distinct ...
Maya Natascha Vienken, Jan‐Ole Fischer, Roland Langrock   +2 more
wiley   +1 more source

Development of a non-invasive heart rate measurement method for sea turtles with dense keratinous scutes through effective electrode placement

Frontiers in Physiology
Measuring the heart rate of sea turtles is important for understanding their physiological adaptations to the environment. Non-invasive methods to measure the electrocardiogram (ECG) of sea turtles have been developed by attaching electrodes to their ...
Ayaka Saito, Kino Sakai, Megumi Kawai, Lyu Lyu, Kazunari Kameda, Hiromi Kudo, Katsufumi Sato, Kentaro Q. Sakamoto   +7 more
doaj   +1 more source

Behavioural responses to radio‐tag attachment in butterflies: Evidence for active tag removal

Ecological Entomology, Volume 51, Issue 4, Page 838-841, August 2026.
During controlled indoor flight experiments with 89 butterflies from eight tropical species, we monitored behavioural responses to dorsally attached radio tags using high‐speed video recordings. Four of 39 Morpho helenor exhibited coordinated abdominal flexion and hind leg movements directed toward the tag antenna during flight; in two individuals this
Simon Heitzler, Thomas K. Gottschalk
wiley   +1 more source

Novel insights into sex-specific differences in heart rate variability and autonomic nervous system regulation during spawning behavior in chum salmon (Oncorhynchus keta) revealed by re-analysis of ECG logger data

Frontiers in Physiology
This study reanalysed electrocardiogram (ECG) data collected in a previous study on chum salmon to explore sex-specific differences in heart rate variability (HRV) and autonomic nervous system regulation during spawning.
Yuya Makiguchi, Takaaki K. Abe, Masaki Ichimura   +2 more
doaj   +1 more source

Denning Phenology Mediates Sea‐Ice Loss Impacts on Early Reproductive Success in Polar Bears

Global Change Biology, Volume 32, Issue 8, August 2026.
Changes in overwinter sheltering phenology in response to climate change and their fitness consequences have rarely been studied. Here, we show that climate change has disrupted the phenology of overwinter maternity denning in polar bears, with females emerging from den earlier when sea‐ice had been scarce the preceding year.
Marwan Naciri, Jon Aars, Marlène Gamelon, Magnus Andersen, Andrew E. Derocher, Øystein Wiig, Sarah Cubaynes   +6 more
wiley   +1 more source

Biologicals [PDF]

International Journal of Rheumatology, 2012
de Carvalho, Jozélio Freire, Appenzeller, Simone, Shoenfeld, Yehuda   +2 more
openaire   +2 more sources

Satellite tracking of tiger sharks in the Eastern Central Atlantic reveals varied space-use patterns and ocean-basin connectivity

Frontiers in Marine Science
Large-bodied sharks, including the tiger shark (Galeocerdo cuvier), play crucial roles as top predators in marine ecosystems, regulating lower trophic-level populations and connecting ecosystems across vast distances. However, elasmobranchs, particularly
Zeddy T. A. Seymour, Francesco Garzon, Francesco Garzon, Ze Luis Monteiro, Rachel T. Graham   +4 more
doaj   +1 more source

Annual survival rates of satellite-tracked adult European honey buzzards (Pernis apivorus) based on the Kaplan-Meier estimator and its probabilistic extension

Raptor Journal
The annual survival rate of adult raptors is an important parameter in population dynamics and is needed to derive measures for population stability and conservation management. Here we studied adult European honey buzzards (Pernis apivorus), a migratory
Meyburg Bernd-Ulrich, Gries Benno
doaj   +1 more source

Multi-Sensor Assessment of Pigeon Flight Behavior: Role of Biomechanical and Landscape Characteristics

Sensors
Understanding how birds adjust their flight in response to biomechanical characteristics and environmental conditions can be useful for interpreting homing behavior.
Flavia Forconi, Ilenia De Meis, Giacomo Dell’Omo, Valentina Camomilla, Giuseppe Vannozzi, Maurizio Schmid, Silvia Conforto, Daniele Bibbo   +7 more
doaj   +1 more source

BIOLOGICAL EUGENICS [PDF]

Journal of Heredity, 1914
n ...
openaire   +1 more source