Results 61 to 70 of about 2,545 (207)

Exploring Progesterone Levels and Scaled Mass Index as Predictors of Pregnancy in Free‐Ranging Belugas

Marine Mammal Science, Volume 42, Issue 3, July 2026.
ABSTRACT Monitoring pregnancy rates can provide vital information regarding a population's viability and trajectory. This study combined drone‐based photogrammetry with biopsy darting to determine if the Scaled Mass Index (SMI) estimated from aerial images can be used to identify pregnant, free‐ranging St.
Meredith Sherrill, Limoilou‐Amélie Renaud, Nicholas Kellar, Robert Michaud, Véronique Lesage, Jonathan Verreault   +5 more
wiley   +1 more source

Early Growth and Developmental Characteristics of Chinese Bahaba (Bahaba taipingensis)

Fishes
The Chinese bahaba (Bahaba taipingensis), belonging to the Sciaenidae family, is one of the largest croakers with a limited geographical distribution. It is a critically endangered fish species according to the IUCN and a protected animal in China.
Lin Yan, Yuanhao Ren, Tongxi Ai, Jianshe Shi, Junjie Wang, Kuoqiu Yan, Keji Jiang   +6 more
doaj   +1 more source

Characterization of the hypoxia-inducible factor 1 alpha gene in the sperm whale, beluga whale, and Yangtze finless porpoise

, 2015
Cetaceans have evolved many behavioral and biological adaptations to allow them to survive in aquatic environments. Because of diving and breath-holding behaviors, cetaceans experience wide fluctuations in oxygen tension.
Zheng, Jinsong, Wang, Ding, Xiao, WH (reprint author), Chinese Acad Sci, Inst Hydrobiol, Key Lab Aquat Biodivers & Conservat, Wuhan 430072, Hubei, Peoples R China., Hu, Bo, Wang, Jingzhen, Bi, Jianling, Xiao, Wuhan   +6 more
core   +1 more source

Conservation genetics of the St. Lawrence beluga whale (Delphinapterus leucas) [PDF]

, 2022
1 online resource (33 pages) : charts, graphsIncludes abstract.Includes bibliographical references (pages 31-33).Beluga whales (Delphinapterus leucas) migrated to the St.
Best, Brianna
core  

Adaptive Acoustic Monitoring for Endangered Cook Inlet Beluga Whales in Complex Soundscapes

Marine Mammal Science, Volume 42, Issue 3, July 2026.
ABSTRACT Effective conservation of the endangered Cook Inlet beluga whale (Delphinapterus leucas) requires comprehensive spatiotemporal data, yet monitoring efforts remain spatially biased, underrepresenting important southern habitats. Passive acoustic monitoring (PAM) provides the necessary broad‐scale coverage, but its expansion introduces ...
Manuel Castellote, Rahul Dodhia, Daniela Ruiz, Zhongqi Miao, Pablo Arbelaez, Verena Gill, Lori Polasek, Juan M. Lavista Ferres   +7 more
wiley   +1 more source

Use of satellite imagery to estimate distribution and abundance of Cumberland Sound beluga whales reveals frequent use of a glacial river estuary

Frontiers in Marine Science
Limiting disturbance in critical habitats is an important part of ensuring the well-being and sustainability of populations at risk, such as Cumberland Sound beluga whales (Delphinapterus leucas). Using non-disruptive Very High Resolution (VHR) satellite
Amanda M. Belanger, Amanda M. Belanger, Bryanna A. H. Sherbo, James D. Roth, Cortney A. Watt, Cortney A. Watt   +5 more
doaj   +1 more source

River-influenced beluga (Delphinapterus leucas) summer habitat use in western Hudson Bay, Canada

Arctic Science, 2023
River estuaries along western Hudson Bay, Canada, are important summer habitats for beluga whales (Delphinapterus leucus (Pallas, 1776)) and subject to increasing industrial development activities including vessel traffic. The feasibility of establishing
Emma L. Ausen, David G. Barber, Atreya Basu, Jens Ehn, David Walker, Laura Dalman, Marianne Marcoux   +6 more
doaj   +1 more source

Genomic Insights Into the Evolutionary History of Berardius Beaked Whales: Speciation Driven by Resource Specialization, Gigantism and Thermal Barriers?

Molecular Ecology, Volume 35, Issue 12, June 2026.
ABSTRACT Understanding the diversity of our oceans is fundamental now more than ever as climate change and human activities put increasing pressure on marine species and ecosystems. Beaked whales (family Ziphiidae) are among the most poorly understood marine mammals, in part due to their affinity to offshore underwater canyons and prolonged diving ...
Morgan L. McCarthy, Michael V. Westbury, Mark S. Springer, John Gatesy, Morten Tange Olsen, Phillip A. Morin   +5 more
wiley   +1 more source

VMD-LSTM Short-term Wind Speed Prediction Model Based on BWO and WOA [PDF]

Zhengzhou Daxue xuebao. Gongxue ban
In view of the power fluctuation and randomness existing in the operation of wind turbine networks, to improve the accuracy of wind speed prediction and the stability of wind turbine operation, in this study a VMDLSTM short-term wind speed prediction ...
JIA Shihui, LIU Lifu, CHI Xiaoni, LI Gaoxi   +3 more
doaj   +1 more source

Mercury-induced micronuclei in skin fibroblasts of beluga whales [PDF]

Environmental Toxicology and Chemistry, 1998
AbstractBeluga whales (Delphinapterus leucas) inhabiting the St. Lawrence estuary are highly contaminated with environmental pollutants and have a high incidence of cancer. Environmental contaminants may be partly responsible for the high incidence of cancer observed in this population.
Julie M. Gauthier, Hélène Dubeau, Éric Rassart   +2 more
openaire   +1 more source