Results 41 to 50 of about 572 (155)

Searching for humpback whales in a historical whaling hotspot of the Coral Sea, South Pacific

Endangered Species Research, 2020
Humpback whales Megaptera novaeangliae were severely depleted by commercial whaling. Understanding key factors in their recovery is a crucial step for their conservation worldwide.
Garrigue, C, Derville, S, Bonneville, C, Baker, CS, Cheeseman, T, Millet, L, Paton, D, Steel, D   +7 more
doaj   +1 more source

Satellite Telemetry Reveals Spatial Overlap Between Vessel High-Traffic Areas and Humpback Whales (Megaptera novaeangliae) Near the Mouth of the Chesapeake Bay

Frontiers in Marine Science, 2020
During winter months, humpback whales (Megaptera novaeangliae) frequent the coastal waters of Virginia near the mouth of the Chesapeake Bay. Located within the Bay is Naval Station Norfolk, the world’s largest naval military installation, and the Port of
Jessica M. Aschettino, Daniel T. Engelhaupt, Amy G. Engelhaupt, Andrew DiMatteo, Todd Pusser, Michael F. Richlen, Joel T. Bell   +6 more
doaj   +1 more source

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

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

Migratory behaviour of humpback whales in the southeastern Pacific under climate change

Scientific Reports
Humpback whales, a species of baleen whale occurring in all oceans globally, undergo seasonal migration between their breeding grounds in tropical warm waters and high latitude feeding grounds.
Virginie Millien, Nicole Stafiej, Fernando Félix, Hector M. Guzman   +3 more
doaj   +1 more source

Estimating the Age of West Greenland Humpback Whales Through Aspartic Acid Racemization and Eye Lens Bomb Radiocarbon Methods

Frontiers in Marine Science, 2020
To maintain a sustainable harvest of marine mammals, knowledge on key life history parameters such as age is essential. In West Greenland, humpback whale numbers were low during the 1980s due to past commercial whaling. However, the moratorium, which was
Tenna K. Boye, Tenna K. Boye, Eva Garde, Julius Nielsen, Rasmus Hedeholm, Jesper Olsen, Malene Simon, Malene Simon   +7 more
doaj   +1 more source

Intra-seasonal variation in feeding rates and diel foraging behaviour in a seasonally fasting mammal, the humpback whale

Royal Society Open Science, 2022
Antarctic humpback whales forage in summer, coincident with the seasonal abundance of their primary prey, the Antarctic krill. During the feeding season, humpback whales accumulate energy stores sufficient to fuel their fasting period lasting over six ...
Ross C. Nichols, David E. Cade, Shirel Kahane-Rapport, Jeremy Goldbogen, Alison Stimpert, Douglas Nowacek, Andrew J. Read, David W. Johnston, Ari Friedlaender   +8 more
doaj   +1 more source

Humpback whales of the Persian Gulf [PDF]

, 2017
Abstract The humpback whale has long been considered a rare straggler into the Persian Gulf, however new evidence contradicts this concept. We here critically review published and new records for Megaptera novaeangliae occurrence in the Gulf for the period 1883-2017.
Dakhteh, Seyed Mohammad Hashem, Ranjbar, Sharif, Moazeni, Mostafa, Mohsenian, Nazanin, Delshab, Hossein, Moshiri, Hamed, Nabavi, Seyed Mohammad B., Van Waerebeek, Koen   +7 more
openaire   +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