Results 121 to 130 of about 118,369 (328)

Influence of Dolphin-Watching Tourism Vessels on the Whistle Emission Pattern of Common Dolphins and Bottlenose Dolphins

open access: yesOceans
Recent years have seen a notable rise in dolphin-watching boat activities along the Algarve coast in Portugal, potentially affecting the common dolphin (Delphinus delphis) and bottlenose dolphin (Tursiops truncatus) local populations. This study examines
Ana A. Silva   +4 more
doaj   +1 more source

The Use of Aquatic Mammals for Bait in Global Fisheries

open access: yesFrontiers in Marine Science, 2018
The use of aquatic mammals as bait to enhance the harvest of fisheries species has garnered little attention by the scientific and conservation communities, often receiving only brief mention in reports focused on the human consumption or bycatch of ...
Vanessa J. Mintzer   +3 more
doaj   +1 more source

Reviewing seas of data: Integrating image‐based bio‐logging and artificial intelligence to enhance marine conservation

open access: yesMethods in Ecology and Evolution, EarlyView.
Abstract Conservation of marine ecosystems can be improved through a better understanding of ecosystem functioning, particularly the cryptic underwater behaviours and interactions of marine predators. Image‐based bio‐logging devices (including images, videos and active acoustic) are increasingly used to monitor wildlife movements, foraging behaviours ...
Marianna Chimienti   +14 more
wiley   +1 more source

Prioritizing future evidence needs for marine and freshwater mammal conservation action

open access: yesAnimal Conservation, EarlyView.
To improve conservation practice, decisions should be informed by the available evidence on the effectiveness of conservation actions. Here, we review the comprehensiveness of this evidence base for marine and freshwater mammals. We assess the taxonomic and geographic coverage of the evidence base, identify biases and suggest priorities for future ...
E. Hordern   +5 more
wiley   +1 more source

Differences in Dolphin Mortality Rates in Night and Day Sets for the U.S. Eastern Tropical Pacific Tuna Purse Seine Fishery [PDF]

open access: yes, 1992
Because dolphins sometimes travel with yellowfin tuna, Thunnus albacares, in the eastern tropical Pacific (ETP), purse seiners use the dolphins to locate and capture tuna schools.
Coan, Jr. , Atilio L.   +2 more
core  

Challenges of Monitoring Endangered Bryde's Whales During a Period of Rapid Environmental Change

open access: yesAnimal Conservation, EarlyView.
Estimating population size is challenging for rare and elusive species that occur at low densities and are difficult to detect during sampling. We estimated the abundance of a Nationally critical whale species—Aotearoa New Zealand Bryde's whales—using a custom‐formulated POPAN model which incorporated transience to account for their complex residency ...
A. S. Cranswick   +7 more
wiley   +1 more source

The aporetic dialogues of Modena on gender differences: Is it all about testosterone? Episode II: Empathy

open access: yesAndrology, EarlyView.
Abstract The exploration of gender differences in non‐andrological fields was the core focus of a series of discussions, which took place at the Endocrinology Unit in Modena, Italy in the form of the aporetic dialogue of ancient Greece. This second episode reports the transcript of the actual debate on testosterone's role in defining empathic behavior ...
Giulia Brigante   +6 more
wiley   +1 more source

Interpreting spotted dolphin age distributions [PDF]

open access: yes, 1984
Previous work has determined the age distribution from a sample of spotted dolphins (Stenella attenuata) killed in the eastern Pacific tuna purse-seine fishery.
Barlow, Jay, Hohn, Aleta A.
core  

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