Results 71 to 80 of about 2,545 (207)

Genetic and Ecological Divergence Between Northwest Atlantic Killer Whale Populations

Ecology and Evolution, Volume 16, Issue 5, May 2026.
Killer whale (Orcinus orca) populations exhibit substantial genetic, ecological, and morphological differences across their global distribution. In this study, we use whole‐genome resequencing and compound‐specific stable isotope analysis of amino acids to show concurrent genetic and ecological differentiation in two relatively understudied killer ...
Caila E. Kucheravy, Evelien de Greef, Steven H. Ferguson, Cortney A. Watt, Jack W. Lawson, Jeremy J. Kiszka, Colin J. Garroway, Cory J. D. Matthews   +7 more
wiley   +1 more source

Skin microbiome of beluga whales: spatial, temporal, and health-related dynamics

Animal Microbiome, 2020
Background Host-specific microbiomes play an important role in individual health and ecology; in marine mammals, epidermal microbiomes may be a protective barrier between the host and its aqueous environment.
Amy M. Van Cise, Paul R. Wade, Caroline E. C. Goertz, Kathy Burek-Huntington, Kim M. Parsons, Tonya Clauss, Roderick C. Hobbs, Amy Apprill   +7 more
doaj   +1 more source

2D to 3D: Exploring Variation of Niche Dimensionality Across Consumers in a Coastal Arctic Ecosystem and Implications on Interpretation

Ecology and Evolution, Volume 16, Issue 5, May 2026.
We compared the traditional two‐dimensional (2D: δ13C and δ15N) isotopic niches with a three‐dimensional (3D: δ13C, δ15N, and δ34S) framework to evaluate changes in niche size and overlap. Overall, invertebrates and benthic‐associated species showed greater changes in niche size and reduced overlap using the 3D approach.
Paloma C. Carvalho, Kelsey F. Johnson, Kyle H. Elliott, Steven H. Ferguson, Aaron T. Fisk, H. Grant Gilchrist, Kevin J. Hedges, Oliver P. Love, C. J. Mundy, Andrea Niemi, Wesley R. Ogloff, Bruno Rosenberg, Cortney A. Watt, David J. Yurkowski   +13 more
wiley   +1 more source

Element concentrations in tissues reveal spatial structure of Atlantic walrus management stocks

The Journal of Wildlife Management, Volume 90, Issue 4, May 2026.
Differences in tissue element concentrations confirm geographic differentiation between 2 of Canada's walrus management stocks but reveal additional spatial structure within the largest stock that may have management implications. Abstract Ensuring harvested animal populations are managed at appropriate scales requires an understanding of underlying ...
Alexander M. Jardine, Jennifer F. Provencher, Mary Gamberg, Cory J. D. Matthews   +3 more
wiley   +1 more source

Proteomics-Based Investigation of Sexual Dimorphism in Swim Bladder Texture of Chu’s Croaker (Nibea coibor)

Foods
The swim bladder of Chu’s croaker (Nibea coibor) is an expensive food with high texture requirements. In this study, we found that male swim bladder had better toughness than female.
Haoran Zhang, Jiali Lin, Haoji Guo, Xianda He, Wanying Jiang, Lin Yan, Kuoqiu Yan, Xiaobo Wen, Fan Lin   +8 more
doaj   +1 more source

Migration phenology of beluga whales in a changing Arctic [PDF]

Climate Research, 2012
Global warming has been linked to dramatic environmental changes, particularly in polar marine environments, where water temperatures and sea-ice cover are especially affected. Using satellite telemetry, we investigated how local changes in sea-surface temperatures (2002−2004) affected the movement patterns of belugas Delphinapterus leucas in eastern ...
Bailleul, F., Lesage, V., Power, M., Doidge, D.W., Hammill, M.O.   +4 more
openaire   +2 more sources

Data Beluga Novel Imitation

, 2023
This study investigates the ability to imitate novel behaviors in a young beluga whale. Using a do-as-other-does paradigm, the subject observed the performance of a conspecific demonstrator involving familiar and novel behaviors.
Mª Victoria Hernández-Lloreda (4164511), José Zamorano-Abramson (4042199)   +1 more
core   +1 more source

Diverging Food Web Functioning Around Southampton Island, Nunavut: The Influence of Primary Production Supply and Bathymetry

Ecology and Evolution, Volume 16, Issue 4, April 2026.
Southampton Island hosts two distinct benthic sub‐webs, north and south. North is deeper, phytoplankton‐driven; South is shallower, more ice‐algae driven. North benthos: bottom‐up control, four trophic levels including apex predators. South benthos: walrus top‐down control, trophic truncation to three levels.
Rémi Amiraux, C. J. Mundy, Marie Pierrejean, Philippe Massicotte, Steven H. Ferguson, Aaron T. Fisk, Les N. Harris, Kevin J. Hedges, Kelsey F. Johnson, Andrea Niemi, Bruno Rosenberg, Wesley R. Ogloff, Cortney A. Watt, David J. Yurkowski   +13 more
wiley   +1 more source

Decadal migration timing and temporal variation in dive behavior of an endangered beluga whale population

Frontiers in Marine Science
IntroductionUnderstanding migration timing and movement behavior is critical for predicting population responses to environmental changes. The beluga whale (Delphinapterus leucas) population in Cumberland Sound, Nunavut, is currently endangered due to ...
Kasey P. Ryan, Sean F. Ryan, Sean F. Ryan, Mads Peter Heide-Jørgensen, Steven H. Ferguson, Steven H. Ferguson, Sasha R. X. Dall, James D. Roth, Cortney A. Watt, Cortney A. Watt   +9 more
doaj   +1 more source

Dependence Between Effort Offsets and Process Intensity in Generalized Models for Count Data: Spatial Models of Animal Abundance

Environmetrics, Volume 37, Issue 3, April 2026.
ABSTRACT Researchers often use offsets to control for variation in exposure or effort in GLMM‐style models for count data. In this paper, we study the case where effort is dependent on the underlying process of interest (e.g., Poisson intensity) and where inference focuses on prediction. We first examine a simple Poisson GLM, where we use simulation to
Paul B. Conn, Megan C. Ferguson
wiley   +1 more source