Results 71 to 80 of about 970 (191)

Population structure of Dugong dugon across the Indo-Pacific revealed by historical mitogenomes

Royal Society Open Science
Sirenia, an iconic marine taxon with a tropical and subtropical worldwide distribution, face an uncertain future. All species are designated ‘Vulnerable’ to extinction by the IUCN.
Lydia Hildebrand Furness, Oliver Kersten, Aurélie Boilard, Lucy Keith-Diagne, Cristina Brito, James H. Barrett, Andrew Kitchener, Richard Sabin, Shane Lavery, Stephanie Plön, Bastiaan Star   +10 more
doaj   +1 more source

Cognition as a Conservation Tool: A Case Study of Florida Manatees and Boat Strikes

Marine Mammal Science, Volume 42, Issue 2, April 2026.
ABSTRACT Boat strikes injure and kill large numbers of Florida manatees (Trichechus manatus latirostris) each year. Management actions taken to mitigate this threat can be potentially enhanced by consideration of manatee cognitive processes. The role of cognition in marine mammal conservation has received little consideration in the literature.
Gordon B. Bauer, Charles J. Deutsch, Roger L. Reep, Wendi Fellner, Tabitha Gunnars, Peter F. Cook, Heidi E. Harley, Athena M. Rycyk   +7 more
wiley   +1 more source

Ausgestorbene Meeresküstenungetüme τροχοί resp. rotae

Erga-Logoi, 2019
The paper discuss Claudius Aelian’s testimony concerning mysterious sea monsters called τροχοί (NA XIII 20). According to Aelian, these gigantic but timid animals swim in droves close to the shore.
Elwira Kaczynska, Witold Sadzinski, Krzysztof Tomasz Witczak   +2 more
doaj   +1 more source

Sirenian Sounds

Abstract Extant sirenians are the only aquatic herbivorous mammals and comprise four recognized species: the dugong, the Amazonian manatee, the West Indian manatee, and the African manatee. They inhabit coastal shallow waters in tropical and subtropical areas.
Renata S. Sousa-Lima, Juan Carlos Azofeifa-Solano, Vera M. F. da Silva, Giovanna A. Dantas, Isadora M. Carletti, Ann Bowles, Rodney Rountree, Christine Erbe   +7 more
openaire   +1 more source

Distilling food web dynamics: top–down and bottom–up drivers of extinction and trophic cascades

Oikos, Volume 2026, Issue 3, March 2026.
Quantifying population dynamics is a fundamental challenge in ecology and evolutionary biology, particularly for species that are cryptic, microscopic, or extinct. Traditional approaches rely on continuous representations of population size, but in many cases, the precise number of individuals is unknowable.
Justin D. Yeakel
wiley   +1 more source

First national photo-identification catalog of the Greater Caribbean Manatee (Trichechus manatus manatus) in the Dominican Republic using UAV surveys

Novitates Caribaea
Between May 2023 and December 2025, a total of 611 unmanned aerial vehicle (UAV) flights were conducted across eleven coastal sites in the Dominican Republic with the objective of developing the first standardized photo-identification catalog of the ...
Rita I. Sellares-Blasco, Rachel Plekaniec, María F. Villalpando, Marvin Del Cid, Valeria P. Herrera   +4 more
doaj   +1 more source

Ocurrence of Cryptosporidium spp. in Amazonian manatees (Trichechus inunguis, Natterer, 1883) [PDF]

Biotemas, 2007
The apicomplexa protozoa Cryptosporidium infects several mammals, including terrestrial and aquatic species. In the epidemiology of this infection, the ingestion of water and/or food contamined with oocysts comprises the main mechanism of transmission to
Maria Aparecida da Glória Faustino, Jociery Einhardt Vergara-Parente, Carla Verônica Carrasco Aguilar, Fábia de Oliveira Luna, Danielle dos Santos Lima, Leucio Câmara Alves, João Carlos Gomes Borges, Ana Maria Alves Lima, Miriam Marmontel   +8 more
doaj  

New evidence indicates the presence of barracuda (Sphyraenidae) and supports a tropical marine environment in the Miocene of Madagascar.

PLoS ONE, 2017
Recent exploration of Miocene-age deposits at Nosy Makamby, a small island ~50 km southwest of Mahajanga city in northwestern Madagascar, has led to the recovery of a large sample [82] of isolated barracuda teeth (Sphyraena sp.).
Michael D Gottfried, Karen E Samonds, Summer A Ostrowski, Tsiory Harimalala Andrianavalona, Tolotra Niaina Ramihangihajason   +4 more
doaj   +1 more source

Validation of aerial photogrammetry methods to measure body size, condition and mass in small cetaceans

The Journal of Physiology, Volume 604, Issue 5, Page 1788-1808, 1 March 2026.
Abstract figure legend Unoccupied aerial vehicle (UAV)‐based photogrammetry provides measurements equivalent to traditional hand measurements in bottlenose dolphins. Mass estimates derived from UAV measurements closely match the true body mass of live individuals.
Riccardo Cicciarella, Erik P. Willems, Benjamin Markham, Manuela R. Bizzozzero, Wayne Phillips, Simon J. Allen, Michael Krützen, Fredrik Christiansen   +7 more
wiley   +1 more source

Accumulation of Persistent Organic Pollutants in Marine Mammals: A Case Study on Cetaceans, Pinnipeds, and Sirenians [PDF]

, 2022
Persistent organic pollutants (POPs) are lipophilic semi-volatile organic chemicals that present a range of challenges to marine biota, specifically marine mammals that often occupy a high trophic position in the food web.
Moorhead, Alydia
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