Results 51 to 60 of about 1,829 (218)

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

Zoo Biology, EarlyView.
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

FIG. 4 in New record of Metaxytherium (Mammalia, Sirenia) from the lower Miocene of Manosque (Provence, France)

, 2008
FIG. 4. — Ribs and thoracic vertebrae of Meta­xytherium cf. kra­huletzi Depéret, 1895 (MPNRL-MAN2000) from Manosque (Provence, France) in dorsal view.
Sorbi, Silvia
core   +1 more source

Lista actualizada de la diversidad de los mamíferos del Perú y una propuesta para su actualización

Revista Peruana de Biología, 2021
La lista de mamíferos del Perú más reciente, publicada en el año 2020, compiló un total de 569 especies y 82 especies endémicas, sin embargo, en corto tiempo varios cambios taxonómicos han ocurrido y obligan a presentar otra lista actualizada de todas ...
Víctor Raúl Pacheco Torres, Silvia Diaz, Laura Andrea Graham Angeles, Marisel Flores-Quispe, Giüseppy Calizaya-Mamani, Dennisse Ruelas, Pamela Sánchez-Vendizú   +6 more
doaj   +1 more source

Habitat Suitability for a Unique, Fully Marine American Manatee (Trichechus manatus) Population Primarily Depends on Presence of Submarine Freshwater Springs

Marine Mammal Science, Volume 42, Issue 3, July 2026.
ABSTRACT The American manatee (Trichechus manatus) requires freshwater mainly from rivers and springs to maintain osmoregulatory balance in saline environments. However, in Brazil's semi‐arid Potiguar Basin, manatees now rely solely on submarine freshwater springs because hypersaline estuaries have become unsuitable sources of freshwater.
A. C. O. Meirelles, I. C. Normande, M. D. O. Alves, K. F. Choi, V. L. Carvalho, J. C. G. Borges, L. von Fersen, Andrew W. Trites   +7 more
wiley   +1 more source

Die Primärstruktur des Hämoglobins des Flu;-Manatis (Trichechus inunguis, Sirenia

, 1988
The hemoglobin of the Brazilian Manatee {Trichechus inunguis, Sirenia) consists of one component. We present the primary structures of the α- and β-chains which have been separated by chromatography on carboxy-methyl-cellulose Cm-Kresol52.
Robin BEST, Braunitzer, Gerhard B., Traute KLEINSCHMIDT, Best, Robin C., Gerhard BRAUNITZER, Kleinschmidt, Traute   +5 more
core   +1 more source

A new estimate of afrotherian phylogeny based on simultaneous analysis of genomic, morphological, and fossil evidence

BMC Evolutionary Biology, 2007
Background The placental mammalian clade Afrotheria is now supported by diverse forms of genomic data, but interordinal relationships within, and morphological support for, the group remains elusive.
Seiffert Erik R
doaj   +1 more source

Early microglial response to amyloid plaques drives sleep loss in Alzheimer's disease

Alzheimer's &Dementia, Volume 22, Issue 6, June 2026.
Abstract INTRODUCTION Sleep disruption is an early feature of Alzheimer's disease (AD), but the cellular mechanisms linking amyloid pathology to sleep loss remain unclear. METHODS Electroencephalography/electromyography (EEG/EMG) recordings, quantitative EEG analysis, and sleep deprivation were performed in APPswe/PSEN1dE9 (APP/PS1) mice at different ...
Nicholas J. Constantino, Riley E. Irmen, Matthew J. Lanning, Sierra M. Turner, Clair C. Ashley, Caitlin M. Carroll, Evan M. Neary, Dave Rubinow, J. Andy Snipes, Shannon L. Macauley   +9 more
wiley   +1 more source

How to remove the brain of Amazonian manatee (Trichechus inunguis) calves preserving the skull for morphological analysis [PDF]

Acta Amazonica
Although there are several studies on the skull of Amazonian manatees (Trichechus inunguis) to better understand the anatomy, physiology, and behavior of these animals, the analysis of the brain has been often neglected.
Kamilla AVELINO-DE-SOUZA, Gisele de Castro Maciel VALDEVINO, Gabriel MELO-SANTOS, Bruno MOTA, Vera Maria Ferreira DA SILVA   +4 more
doaj   +1 more source

A Global, Taxon‐Stratified, High‐Resolution Sampling‐Effort Dataset From GBIF for Bias‐Aware Ecological Modelling

Diversity and Distributions, Volume 32, Issue 5, May 2026.
ABSTRACT Introduction and Aim Spatiotemporal and taxonomic sampling bias in biodiversity occurrence data poses critical challenges for robust ecological inference, species distribution models (SDMs), and conservation planning. Despite the exponential growth in global biodiversity records over recent decades, these biases persist.
Ahmed El‐Gabbas
wiley   +1 more source

Food Plants Eaten by Amazonian Manatees (Trichechus inunguis, Mammalia : Sirenia)

Brazilian Archives of Biology and Technology, 2002
To determine the feeding habits of the Amazonian manatee Trichechus inunguis in some Central Amazonian rivers and lakes, we compared plant epidermis found in the stomach contents and/or faeces of animals with a reference collection of plants present in ...
Ioni G. Colares, Elton P. Colares
doaj   +1 more source