Results 51 to 60 of about 42,030 (141)

Modeling Skin Mark Temporal Variations to Estimate the Sex of Delphinids with Low Sexual Dimorphism: Implications for Management and Conservation

Integrative Zoology, EarlyView.
This work aimed to apply the principles of skin mark analysis to a cetacean species to build a sex‐discrimination model exclusively based on photographic material. Relevant differences between sexes emerged in markings, with males presenting more social, aggression‐related, and fishing‐related marks overall, and a stronger tendency of mark accumulation
Alice Turchi, Giulia Pedrazzi, Alex Mattiussi, Maria S. Labriola, Daniele Petrone, Sofia Rinalduzzi, Giancarlo Giacomini, Daniela Silvia Pace   +7 more
wiley   +1 more source

Explaining humpback whale’ distribution and abundance in the Magellan Strait, ChileZenodo

Global Ecology and Conservation
A new feeding ground for humpback whales was discovered in the Magellan Strait in 2003, which is critical habitat for a subpopulation of whales that migrate to these waters.
Catalina Sapag, Juan Capella, Yerko Vilina, Frank van Langevelde   +3 more
doaj   +1 more source

Fishing Activity Affected Odontocete Cetacean Distribution in a Marine Protected Area in the East China Sea

Integrative Zoology, EarlyView.
Spatiotemporal distribution of odontocete cetaceans within China's Jiushan Archipelago National Nature Reserve was investigated. Fishing vessels significantly reduced both cetacean acoustic detections and feeding activity, whereas gillnets selectively suppressed cetacean feeding behavior without affecting overall cetacean detection rates.
Yifan Liu, Zitong Zhou, Peng Ding, Yu Pan, Zhi Yang, Haochi Wang, Fangqiao Wang, Tianshi Wei, Pengxiang Duan, Tomonari Akamatsu, Zhitao Wang   +10 more
wiley   +1 more source

Maximizing eDNA detections of rare marine organisms: A case study of a delphinid species

Methods in Ecology and Evolution, EarlyView.
Abstract Environmental DNA (eDNA) is an emerging tool for surveying marine organisms. Advances in molecular assay designs and bioinformatic methods provide new opportunities for detecting rare species; however, overcoming methodological challenges of rare species detection remains an important obstacle for the widespread deployment of eDNA methods for ...
Nastassia V. Patin, Eiren K. Jacobson, Zachary Gold, Amy M. Van Cise, Julie Dinasquet, Bryce Ellman, Robert H. Lampe, Anne Schulberg, Noelle Bowlin, Ryan Freedman, Erin Satterthwaite, Andrew E. Allen, Brice X. Semmens   +12 more
wiley   +1 more source

Humpback whale migrations to Antarctic summer foraging grounds through the southwest Pacific Ocean

Scientific Reports, 2018
Humpback whale (Megaptera novaeangliae) populations typically undertake seasonal migrations, spending winters in low latitude breeding grounds and summers foraging in high latitude feeding grounds.
V. Andrews-Goff, S. Bestley, N. J. Gales, S. M. Laverick, D. Paton, A. M. Polanowski, N. T. Schmitt, M. C. Double   +7 more
doaj   +1 more source

Comparative review of entanglement risk assessments for cetacean conservation and management

Conservation Biology, EarlyView.
Abstract Cetacean entanglement in fishing gear remains a major global threat that exposes persistent gaps in how fisheries management frameworks manage risk to nontarget species. Ecological risk assessment (ERA) offers a structured way to link exposure and consequences to an explicit statement of risk, but entanglement risk assessments vary widely in ...
Laura Joan Feyrer, Clair Evers, Hilary Moors‐Murphy   +2 more
wiley   +1 more source

Observer coverage and interaction rates determine the choice between design‐based and machine learning bycatch estimators for rare species

Conservation Biology, EarlyView.
Abstract Robust estimates of the magnitude of protected species bycatch are essential for effective fisheries management and marine conservation. Existing bycatch estimation methods typically struggle to accurately and precisely estimate the bycatch of rare species as a result of the statistical assumptions necessary to overcome infrequent encounters ...
Christopher Long, Robert Ahrens, T. Todd Jones, Zachary Siders   +3 more
wiley   +1 more source

Distribution and abundance of large whales in Norwegian and adjacent waters based on ship surveys 1995-2001

NAMMCO Scientific Publications, 2009
The abundances of large whale species are presented for the northeast Atlantic from near-complete survey coverage in 1995 and from multiple partial-area surveys during 1996-2001.
Nils Øien
doaj   +1 more source

A collaborative and near-comprehensive North Pacific humpback whale photo-ID dataset

Scientific Reports, 2023
We present an ocean-basin-scale dataset that includes tail fluke photographic identification (photo-ID) and encounter data for most living individual humpback whales (Megaptera novaeangliae) in the North Pacific Ocean.
Ted Cheeseman, Ken Southerland, Jo Marie Acebes, Katherina Audley, Jay Barlow, Lars Bejder, Caitlin Birdsall, Amanda L. Bradford, Josie K. Byington, John Calambokidis, Rachel Cartwright, Jen Cedarleaf, Andrea Jacqueline García Chavez, Jens J. Currie, Joëlle De Weerdt, Nicole Doe, Thomas Doniol-Valcroze, Karina Dracott, Olga Filatova, Rachel Finn, Kiirsten Flynn, John K. B. Ford, Astrid Frisch-Jordán, Christine M. Gabriele, Beth Goodwin, Craig Hayslip, Jackie Hildering, Marie C. Hill, Jeff K. Jacobsen, M. Esther Jiménez-López, Meagan Jones, Nozomi Kobayashi, Edward Lyman, Mark Malleson, Evgeny Mamaev, Pamela Martínez Loustalot, Annie Masterman, Craig Matkin, Christie J. McMillan, Jeff E. Moore, John R. Moran, Janet L. Neilson, Hayley Newell, Haruna Okabe, Marilia Olio, Adam A. Pack, Daniel M. Palacios, Heidi C. Pearson, Ester Quintana-Rizzo, Raul Fernando Ramírez Barragán, Nicola Ransome, Hiram Rosales-Nanduca, Fred Sharpe, Tasli Shaw, Stephanie H. Stack, Iain Staniland, Jan Straley, Andrew Szabo, Suzie Teerlink, Olga Titova, Jorge Urban R., Martin van Aswegen, Marcel Vinicius de Morais, Olga von Ziegesar, Briana Witteveen, Janie Wray, Kymberly M. Yano, Denny Zwiefelhofer, Phil Clapham   +68 more
doaj   +1 more source

The effects of playbacks of anthropogenic noise on the anti‐predator behaviour of Pacific sand lance, Ammodytes personatus

Journal of Fish Biology, EarlyView.
Abstract Noise from human activities has increased and been shown to negatively impact marine animals. Marine mammals and fish are vulnerable to anthropogenic noise because they rely on sound to communicate, find food, avoid predators and sense their environment. Forage fish are small schooling pelagic fish, important to many predators and instrumental
Meredith A. V. White, Francis Juanes, Patrick D. O'Hara, Jose Tavera, Matthew R. Baker, Douglas F. Bertram, Adam Summers, David A. Fifield, Nora V. Carlson   +8 more
wiley   +1 more source