Results 51 to 60 of about 556 (178)

Elephants and Sirenians: A Comparative Review across Related Taxa in Regard to Learned Vocal Behavior

Comparative Cognition & Behavior Reviews, 2022
Vocal production learning is the ability to modify a vocal output in response to auditory experience. It is essential for human speech production and language acquisition. Vocal learning evolved independently several times in vertebrates, indicating evolutionary pressure in favor of this trait. This enables cross-species comparative analysis to be used
Baotic, Anton, Brady, Beth, Ramos, Eric Angel, Stoeger, Angela S.   +3 more
openaire   +3 more sources

First Non‐Invasive Monitoring of Fecal Steroids in Greater Caribbean Manatees (Trichechus manatus manatus)

Zoo Biology, Volume 45, Issue 4, Page 435-443, July/August 2026.
This study established the first fecal hormonal reference values (P4/E2) for the Greater Caribbean manatee. Using non‐invasive ELISA, the authors found no significant differences between mature and immature females, highlighting that long‐term monitoring and ultrasounds are essential to fully understand their complex reproductive cycles.
Vanessa Bermúdez‐Cardona, Roberto Sánchez‐Okrucky, José A. Sandoval‐Zárate, Nataly Castelblanco‐Martínez   +3 more
wiley   +1 more source

Multi‐Omics Unveils the Dual‐Life of the Aquatic Plant Potamogeton nodosus

Physiologia Plantarum, Volume 178, Issue 4, July/August 2026.
ABSTRACT Heterophylly, characterized by distinct leaf morphologies, is an adaptive strategy evolved by some aquatic plants to cope with the contrasting environments in which they grow. It is shaped by environmental factors and by hormones, particularly abscisic and gibberellic acids.
Thomas Horst Berthelier, Sébastien Christophe Cabanac, Caroline Callot, William Marande, Hélène San Clemente, Amélie Perez, Guillaume Marti, Elisabeth Jamet, Christophe Dunand   +8 more
wiley   +1 more source

American manatees adjust their diet composition and trophic niche breadth across different coastal regions

Limnology and Oceanography Letters, Volume 11, Issue 3, May 2026.
Abstract Marine mammals can exhibit high plasticity in foraging strategies, but how such plasticity is driven by environmental conditions is poorly understood. The American manatee (Trichechus manatus), a large, endangered herbivore, inhabits marine, estuarine, and freshwater environments.
Camila Carvalho de Carvalho, Emma Deeks, Leandro L. Ciotti, Silvina Botta, Miriam Marmontel, Margareth Copertino, Fábia de Oliveira Luna, Fernanda Niemeyer Löffer Attademo, Vitor Luz Carvalho, João Carlos Gomes Borges, Alexandra Fernandes Costa, Renata Emin‐Lima, Pavel Kratina, Eduardo Resende Secchi   +13 more
wiley   +1 more source

Data from: Evidence for two sympatric sirenian species (Mammalia, Tethytheria) in the early Oligocene of Central Europe

, 2016
The early Oligocene (Rupelian) sirenian Halitherium schinzii Kaup, 1838, which represents the type species of the genus Halitherium Kaup, 1838, is revised herein based on a morphological re-evaluation of skeletal material originally assigned to this ...
Manja Voss, Oliver Hampe, Hampe, Oliver, Voss, Manja   +3 more
core   +1 more source

Urinary parameters of Trichechus inunguis (Mammalia, Sirenia): reference values for the Amazonian Manatee

Brazilian Journal of Biology
The Amazonian manatee, Trichechus inunguis (Natterer 1883) is endemic to the Amazon Basin and is currently considered a vulnerable species. In order to establish normality ranges of urinary parameters to help monitor the health of this species in ...
TMA. Pantoja, FCW. Da Rosas, VMF. Dos Silva, AMF. Santos   +3 more
doaj   +1 more source

Cranial remain from Tunisia provides new clues for the origin and evolution of Sirenia (Mammalia, Afrotheria) in Africa.

PLoS ONE, 2013
Sea cows (manatees, dugongs) are the only living marine mammals to feed solely on aquatic plants. Unlike whales or dolphins (Cetacea), the earliest evolutionary history of sirenians is poorly documented, and limited to a few fossils including skulls and ...
Julien Benoit, Sylvain Adnet, Essid El Mabrouk, Hayet Khayati, Mustapha Ben Haj Ali, Laurent Marivaux, Gilles Merzeraud, Samuel Merigeaud, Monique Vianey-Liaud, Rodolphe Tabuce   +9 more
doaj   +1 more source

First Report of Marinomyxa spp. (Rhizaria: Endomyxa: Phytomyxea) Infection in Seagrasses Halophila beccarii and Halophila decipiens: Supporting Evidence for a Long‐Standing Symbiosis

Plant Pathology, Volume 75, Issue 3, May–June 2026.
A survey of phytomyxid parasites in seagrasses of the genus Halophila reveals previously unrecognised diversity and a widespread presence of Marinomyxa within Halophila meadows, supporting a tight co‐evolutionary relationship between the two genera. ABSTRACT Marinomyxa is a genus of obligate intracellular parasitic protists known to infect tropical ...
Viktorie Kolátková, Ekkalak Rattanachot, Angel Dieppa, Ryan M. R. Gawryluk   +3 more
wiley   +1 more source

A new Dugonginae sirenian from the early Miocene of India

, 1997
We redescribe the holotype skull of "Metaxytherium" kachchhense Bajpai, Singh, and Singh, 1987, and erect for it the new genus Bharatisiren. This skull is the best-preserved specimen of a fossil sirenian so far reported from the Indian Ocean region, and ...
Bajpai, Sunil, Domning, Daryl P.
core   +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