Results 41 to 50 of about 1,765 (210)

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

Oikos, EarlyView.
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

TLR4 and TLR8 variability in Amazonian and West Indian manatee species from Brazil [PDF]

Genetics and Molecular Biology
Amazonian (Trichechus inunguis) and West Indian (Trichechus manatus) manatees are aquatic mammals vulnerable to extinction found in the Amazon basin and the coastal western Atlantic.
Tatiana Maia de Oliveira, Tibério Cesar Tortola Burlamaqui, André Luiz Alves de Sá, Breanna Breaux, Fábia de Oliveira Luna, Fernanda Löffler Niemeyer Attademo, Alex Garcia Cavalleiro de Macedo Klautau, Jairo Moura Oliveira, Leonardo Sena, Michael F. Criscitiello, Maria Paula Cruz Schneider   +10 more
doaj   +2 more sources

Blubber Thickening Driven by UCP1 Inactivation: Insights from a Cetacean‐Like Transgenic Mouse Model

Integrative Zoology, EarlyView.
UCP1 inactivation of cetaceans in mice drives BAT whitening and iWAT hyperplasia, promoting fat accumulation for aquatic adaptation. Abstract Cetaceans possess thick blubber, a specialized adipose tissue essential for thermal insulation, a streamlined body form, energy storage, and buoyancy. However, the mechanisms that underpin this adaptation are not
Qian Zhang, Yuehua Wang, Hang Zhang, Guiping Xu, Shixia Xu, Guang Yang   +5 more
wiley   +1 more source

NEW REMAINS OF CASATIA THERMOPHILA (CETACEA, MONODONTIDAE) FROM THE LOWER PLIOCENE MARINE VERTEBRATE-BEARING LOCALITY OF ARCILLE (TUSCANY, ITALY) [PDF]

, 2022
An incomplete cranium, three cervicals (including the axis) and two likely lumbars of a monodontid cetacean are here described from lower Pliocene (ca. 5.1–4.5 Ma) marine sandstones cropping out at Arcille (Grosseto Province, Tuscany, Italy). This fossil
BIANUCCI, GIOVANNI, CASATI, SIMONE, COLLARETA, ALBERTO, GRANATA, VALERIO, Merella, Marco   +4 more
core   +2 more sources

Ultrasonographic Ocular Biometry of the Greater Caribbean Manatee (Trichechus manatus manatus)

Veterinary Ophthalmology, EarlyView.
ABSTRACT This study aimed to characterize the ocular biometry of the Trichechus manatus manatus applying B‐mode ultrasonography across different age groups. Twenty‐two animals were assessed employing a portable ultrasound device equipped with a linear transducer. Five ocular parameters were assessed: corneal thickness (CT), anterior chamber depth (ACD),
Radan Elvis Matias de Oliveira, Fernanda Loffler Niemeyer Attademo, Rita de Kássia Matias de Oliveira, Romário Parente dos Santos, Fábia de Oliveira Luna, Antonio A. Mignucci‐Giannoni, Lesly J. Cabrias‐Contreras, Fabrício Bezerra de Sá, Flávio José de Lima Silva, Augusto Carlos da Bôaviagem Freire, Moacir Franco de Oliveira   +10 more
wiley   +1 more source

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

The Journal of Physiology, EarlyView.
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

Progesterone monitoring and gestation length in Amazonian manatees (Trichechus inunguis)

Theriogenology Wild
Knowledge of pregnancy length and the physiological parameters during pregnancy is an important tool for pregnancy diagnosis in free-ranging and captive individuals and for the correct husbandry of captive pregnant females. Therefore, this study aimed to
Rodrigo S. Amaral, Vera M.F. da Silva, José Anselmo d’Affonsêca Neto   +2 more
doaj   +1 more source

NEW SIRENIAN FINDINGS FROM CRETE ISLAND

, 2017
In the last five years, the discovery of several new localities of fossil Sirenians found in the Neogene sediments of Crete has increased drastically the number of sirenian localities on the island.
K. Svana, G. Iliopoulos, C. Fassoulas
semanticscholar   +1 more source

Vulnerability of marine megafauna to global at‐sea anthropogenic threats

Conservation Biology, Volume 40, Issue 1, February 2026.
Abstract Marine megafauna species are affected by a wide range of anthropogenic threats. To evaluate the risk of such threats, species’ vulnerability to each threat must first be determined. We build on the existing threats classification scheme and ranking system of the International Union for Conservation of Nature (IUCN) Red List of Threatened ...
Michelle VanCompernolle, Juliet Morris, Hannah J. Calich, Jorge P. Rodríguez, Sarah A. Marley, Jessica R. Pearce, Briana Abrahms, Katya Abrantes, André S. Afonso, Alex Aguilar, Andrews Agyekumhene, Tomonari Akamatsu, Susanne Åkesson, Nyimale G. Alawa, Joanna Alfaro‐Shigueto, R. C. Anderson, Tycho Anker‐Nilssen, Javier A. Arata, Gonzalo Araujo, Martin C. Arostegui, Haritz Arrizabalaga, Lucy M. Arrowsmith, Marie Auger‐Méthé, Isabel C. Avila, Fred Bailleul, Joanna Barker, Dawn R. Barlow, Adam Barnett, Hector Barrios‐Garrido, Alastair M. M. Baylis, Giovanni Bearzi, Lars Bejder, Eduardo J. Belda, Scott R. Benson, Michael L. Berumen, Sophie Bestley, Natalia P. A. Bezerra, Antonin V. Blaison, Lars Boehme, Steven J. Bograd, Bolaji Dunsin Abimbola, Mark E. Bond, Asunción Borrell, Phil J. Bouchet, Peter Boveng, Gill Braulik, Camrin D. Braun, Stephanie Brodie, Leandro Bugoni, Carlos Bustamante, Steven E. Campana, Susana Cárdenas‐Alayza, Ruth H. Carmichael, Gemma Carroll, Matt I. D. Carter, Filipe R. Ceia, Salvatore Cerchio, Luciana C. Ferreira, Philippine Chambault, Taylor K. Chapple, Patricia Charvet, Elpis J. Chavez, Damien Chevallier, Andre Chiaradia, B. Louise Chilvers, Megan A. Cimino, Bethany L. Clark, C. R. Clarke, Thomas A. Clay, Carl S. Cloyed, Jesse E. M. Cochran, Tim Collins, Enric Cortes, Eduardo Cuevas, David J. Curnick, Peter Dann, P. J. Nico de Bruyn, Asha de Vos, Solène Derville, Maria P. Dias, Bruno Diaz‐Lopez, Kara L. Dodge, Alistair D. M. Dove, Thomas K. Doyle, J. Marcus Drymon, Christine L. Dudgeon, Peter H. Dutton, Ursula Ellenberg, Simon H. Elwen, Louise Emmerson, Edem A. Eniang, Mario Espinoza, Nicole Esteban, Evert Mul, Brian S. Fadely, Annette L. Fayet, Chris Feare, Steven H. Ferguson, Laura Joan Feyrer, Brittany Finucci, Katie R. N. Florko, Jorge Fontes, C. M. Fortuna, Sabrina Fossette, Leila Fouda, Esteban Frere, Mariana M. P. B. Fuentes, Austin J. Gallagher, Pablo Garcia Borboroglu, Claire Garrigue, Pauline Gauffier, Enrico Gennari, Tilen Genov, Elitza S. Germanov, Joan Giménez, Matthew H. Godfrey, Brendan J. Godley, Simon D. Goldsworthy, Matthew Gollock, Victoria González Carman, Natasha J. Gownaris, W. James Grecian, Hector M. Guzman, Mark Hamann, Neil Hammerschlag, Erpur S. Hansen, Mike P. Harris, Gordon Hastie, Danielle E. Haulsee, Elliott L. Hazen, Mads Peter Heide‐Jørgensen, Elizabeth E. Hieb, Jeff W. Higdon, Mark A. Hindell, Jefferson T. Hinke, Xavier Hoenner, G. J. Greg Hofmeyr, Bonnie J. Holmes, Erich Hoyt, Luis A. Huckstadt, Nigel E. Hussey, Charlie Huveneers, Lyn G. Irvine, Rima W. Jabado, David M. P. Jacoby, Audrey Jaeger, Patrick M. Jagielski, Mark Jessopp, Oliver J. D. Jewell, David Jiménez Alvarado, Lance K. B. Jordan, Salvador J. Jorgensen, Benjamin Kahn, Alexandros A. Karamanlidis, Akiko Kato, Lucy W. Keith‐Diagne, M. S. Kiani, Jeremy J. Kiszka, Alison A. Kock, R. Keller Kopf, Carey Kuhn, Peter M. Kyne, Kristin L. Laidre, Fernanda O. Lana, Michelle E. Lander, Matthieu Le Corre, Olivia A. Lee, Ruth H. Leeney, Alexis L. Levengood, J. Jacob Levenson, Marcela Libertelli, Kwang‐Ming Liu, Milagros Lopez Mendilaharsu, Alexandra Loveridge, Christopher G. Lowe, Heather J. Lynch, Bruno C. L. Macena, Alice I. Mackay, Jeffry Madrigal‐Mesén, Mark L. Mallory, Jeffrey C. Mangel, Katherine L. Mansfield, David March, Marianne Marcoux, Helene Marsh, A. D. Marshall, Thomas Mattern, Sara M. Maxwell, Rebecca L. McGuire, Lachlan McLeay, Clive R. McMahon, Séverine Methion, Eva K. M. Meyers, Candice Michelot, Cara Masere, Gianna Minton, Benjamin Morales‐Vela, Gonzalo Mucientes, Hilario Murua, M. A. C. Nicoll, Yuri Niella, Giuseppe Notarbartolo di Sciara, Steffen Oppel, Florian Orgeret, Julie N. Oswald, Ellie Owen, Nathan Pacoureau, Vitor H. Paiva, Daniel M. Palacios, Simone Panigada, Yannis P. Papastamatiou, Guido J. Parra, Sylvia K. Parsons, Donna L. Patterson‐Fraser, S. Hoyt Peckham, Stephen D. Petersen, Lorien Pichegru, Simon J. Pierce, Tânia Pipa, Enrico Pirotta, Pierre Pistorius, Riley A. Pollom, Rui Prieto, Laura Prosdocimi, Klemens Pütz, Nuno Queiroz, John L. Quinn, Jaime A. Ramos, Holly C. Raudino, Angela Recalde‐Salas, ALan F. Rees, Richard D. Reina, Ryan R. Reisinger, Samantha D. Reynolds, Anthony James Richardson, Nicholas G. Riddoch, Federico G. Riet‐Sapriza, James R. Robbins, David P. Robinson, Airam Rodríguez, Tracey L. Rogers, Christoph A. Rohner, Daniela Rojas‐Cañizales, Kevin Ruhomaun, Chandra Salgado Kent, Katsufumi Sato, Kylie L. Scales, Meike Scheidat, Gail Schofield, Fabrizio Serena, Edy Setyawan, Scott A. Shaffer, Brendan D. Shea, Laura Shearer, Marcus Sheaves, Richard B. Sherley, George L. Shillinger, Takahiro Shimada, Mónica A. Silva, Gregory Skomal, Reyd A. Smith, Amy F. Smoothey, Alen Soldo, Emily J. Southall, Antje Steinfurth, D. Bruce Stewart, Joshua D. Stewart, Akinori Takahashi, Vikash Tatayah, Sam Thalmann, Jean‐Baptiste Thiebot, Jesús Tomás, Leigh G. Torres, P. N. Trathan, Fritz Trillmich, Kazuoki Ueda, Frederic Vandeperre, Ralph Eric Thijl Vanstreels, Marisa Vedor, Stella Villegas‐Amtmann, Lauren J. Waller, Matt Waller, Sarah Wanless, Kelly Waples, Cortney A. Watt, Mia Wege, Caroline R. Weir, Randall S. Wells, Paul J. Wensveen, Timothy D. White, Scott D. Whiting, Øystein Wiig, Natalie E. Wildermann, David N. Wiley, Jessica Lauren Williams, Rosie S. Williams, Kenady Wilson, Matthew J. Witt, Freya C. Womersley, David J. Yurkowski, Jie Zhang, Daniel P. Costa, Carlos M. Duarte, Mark G. Meekan, Rob Harcourt, David W. Sims, Graeme C. Hays, Charitha Pattiaratchi, Víctor M. Eguíluz, Ana M. M. Sequeira   +309 more
wiley   +1 more source

SIRENIA FOSSILS FROM QOM FORMATION (BURDIGALIAN) OF THE KABUDAR AHANG AREA, NORTHWEST IRAN [PDF]

, 2016
Fossil remains of sirenians (Mammalia; Dugongidae) are reported from the late early Miocene (Burdigalian) Qom Formation near the town of Shirin Su, northwest Kabudar Ahang region, west of Tehran, Iran. The fossils consist of partial postcranial skeletons
ABBASSI, NASROLLAH, DOMNING, DARYL P., IZAD, NAVID NAVIDI, SHAKERI, SAFOORA   +3 more
core   +6 more sources