Results 51 to 60 of about 12,763 (228)

Spotted Seals, Phoca largha, in Alaska [PDF]

, 1997
The worldwide literature on management of spotted seals, Phoca largha, was reviewed and updated, and aerial surveys weref lown in 1992 and 1993 to determine the species' distribution and abundance in U.S. waters.
Rugh, David J., Shelden, Kim E. W., Withrow, David E.   +2 more
core  

Coinfection by Ureaplasma spp., Photobacterium damselae and an Actinomyces-like microorganism in a bottlenose dolphin (Tursiops truncatus) with pleuropneumonia stranded along the Adriatic coast of Italy [PDF]

, 2016
A case of pleuropneumonia is reported in an adult male bottlenose dolphin (Tursiops truncatus) found stranded in 2014 along the Central Adriatic coast of Italy.
Camm\ue0, Cesare, Curini, Valentina, Di Francesco, Cristina Esmeralda, Di Francesco, Gabriella, Di Guardo, Giovanni, Di Provvido, Andrea, Ferri, Nicola, Mazzariol, Sandro, Proietto, Umberto   +8 more
core   +1 more source

Half a Century of Per‐ and Polyfluoroalkyl Substances in Northern Gannet Eggs: Impact of Regulations

Journal of Applied Toxicology, EarlyView.
ABSTRACT Per‐ and polyfluoroalkyl substances (PFAS), known as “forever chemicals”, are persistent organic pollutants that have been widely used in the industry across the globe for many decades. Their chemical stability, bioaccumulation, and toxicity pose major environmental and health risks. This study examines temporal trends in the concentrations of
Anaïs Fournier, Anaïs Kerric, Raphaël A. Lavoie   +2 more
wiley   +1 more source

Individual variation in pup vocalizations and absence of behavioral signs of maternal vocal recognition in Weddell seals (Leptonychotes weddellii) [PDF]

, 2012
Individually stereotyped vocalizations often play an important role in relocation of offspring in gregarious breeders. In phocids, mothers often alternate between foraging at sea and attending their pup.
Boebel, Olaf, Frickenhaus, Stephan, Kreiss, Cornelia M., van Opzeeland, Ilse, Van Parijs, Sofie   +4 more
core   +1 more source

Semi‐automated seal detection on the Western Antarctic Peninsula: an unsupervised machine learning approach for detecting ice seals in aerial survey data

Remote Sensing in Ecology and Conservation, EarlyView.
This study presents a semi‐automated, rule‐based image analysis pipeline to detect ice seals in aerial surveys of the Western Antarctic Peninsula during an unusually low sea ice year. By using simple hierarchical clustering instead of deep learning, the method substantially reduced human annotation effort while achieving 82% recall, identifying 758 ...
Claire McGinnity, Connor C.G. Bamford, Nathan Fenney, Andrew Fleming, Jaume Forcada, Michael S. Tift, Luis A. Hückstädt, Daniel P. Costa, Peter T. Fretwell   +8 more
wiley   +1 more source

The Miocene seal Monachopsis pontica: isolated in a shrinking sea and adapting to its changing conditions

Royal Society Open Science
More than 170 years have passed since the description of the dwarf Miocene seal Monachopsis pontica. However, its cranial materials were rarely found and described. This paper re-describes M. pontica and discusses its ecological adaptations. M.
Pavlo Otriazhyi, Davit Vasilyan, Karina Vishnyakova, Elena Gladilina, Pavel Gol’din   +4 more
doaj   +1 more source

Tooth Microwear Texture in the Eastern Atlantic Harbour Seals (Phoca vitulina vitulina) of the German Wadden Sea and Its Implications for Long Term Dietary and Ecosystem Changes

Frontiers in Ecology and Evolution, 2021
Marine mammals are increasingly threatened in their habitat by various anthropogenic impacts. This is particularly evident in prey abundance. Understanding the dietary strategies of marine mammal populations can help predict implications for their future
Elehna Bethune, Ellen Schulz-Kornas, Ellen Schulz-Kornas, Ellen Schulz-Kornas, Kristina Lehnert, Ursula Siebert, Thomas M. Kaiser   +6 more
doaj   +1 more source

Preliminary study of discrimination of human vocal commands in walrus (Odobenus rosmarus divergens) [PDF]

, 2020
Walruses seem to use various acoustic signals in social context. So, the auditory faculty is seems to be important for walruses. Can walruses understand another animals' vocal information using auditory sense?
Ashikari, Harumasa, Endo, Shiho, Imagawa, Asuka, Kawaguchi, Naoki, Murayama, Tsukasa, Shimizu, Yusuke, Suzuki, Tomohiro, Wakai, Yoshihito   +7 more
core  

Challenges of measuring body temperatures of free-ranging birds and mammals [PDF]

, 2015
The thermal physiology of most birds and mammals is characterised by considerable spatial and temporal variation in body temperature. Body temperature is, therefore, a key parameter in physiological, behavioural and ecological research.
Gallon, S., McCafferty, D.J., Nord, A.
core   +2 more sources

A framework for the ethical use of animal‐borne devices in post‐release monitoring following rehabilitation

Wildlife Biology, EarlyView.
Rehabilitation and release contribute to conservation efforts for threatened species. Ensuring that these efforts are effective requires a good understanding of the factors which determine survival and integration of released animals into wild populations.
Jessica Harvey‐Carroll, Daire Carroll, Cara-Marie Trivella, Ellen Connelly   +3 more
wiley   +1 more source