Results 21 to 30 of about 1,429 (176)

Biological clocks as age estimation markers in animals: a systematic review and meta‐analysis

open access: yesBiological Reviews, Volume 98, Issue 6, Page 1972-2011, December 2023., 2023
ABSTRACT Various biological attributes associated with individual fitness in animals change predictably over the lifespan of an organism. Therefore, the study of animal ecology and the work of conservationists frequently relies upon the ability to assign animals to functionally relevant age classes to model population fitness.
Louis‐Stéphane Le Clercq   +3 more
wiley   +1 more source

Cross‐species comparison illuminates the importance of iron homeostasis for splenic anti‐immunosenescence

open access: yesAging Cell, Volume 22, Issue 11, November 2023., 2023
To identify molecular clues of anti‐immunosenescence, we compare three long‐lived mammals versus the short‐lived mammal, mouse, in splenic immune cells at single‐cell resolution. We detect higher splenic B:T cell ratio and higher free iron level in mice, while higher expression levels of iron homeostasis‐related genes in long‐lived species.
Ziqing He   +10 more
wiley   +1 more source

Methods to study adult hippocampal neurogenesis in humans and across the phylogeny

open access: yesHippocampus, Volume 33, Issue 4, Page 271-306, April 2023., 2023
Abstract The hippocampus hosts the continuous addition of new neurons throughout life—a phenomenon named adult hippocampal neurogenesis (AHN). Here we revisit the occurrence of AHN in more than 110 mammalian species, including humans, and discuss the further validation of these data by single‐cell RNAseq and other alternative techniques. In this regard,
Julia Terreros‐Roncal   +7 more
wiley   +1 more source

Chromosome comparison between two species of Phyllostomus (Chiroptera - Phyllostomidae) from Eastern Amazonia, with some phylogenetic insights

open access: yesGenetics and Molecular Biology, 2000
The karyotypes of Phyllostomus discolor and P. hastatus from Eastern Amazonia were studied by G-, C-, G/C sequential and Ag-NOR techniques. Both species presented 2n = 32, with the autosome complement composed of 30 bi-armed in P.
Luís R.R. Rodrigues   +5 more
doaj   +1 more source

A conceptual framework to predict social information use based on food ephemerality and individual resource requirements

open access: yesBiological Reviews, Volume 97, Issue 6, Page 2039-2056, December 2022., 2022
ABSTRACT Environmental variability poses a range of challenges to foraging animals trying to meet their energetic needs. Where food patches are unpredictable but shareable, animals can use social information to locate patches more efficiently or reliably. However, resource unpredictability can be heterogeneous and complex.
Jenna E. Kohles   +2 more
wiley   +1 more source

Contribuição ao estudo da infecção de morcegos por hemoflagelados do gênero Trypanosoma Gruby, 1843

open access: yesCadernos de Saúde Pública, 1991
O presente estudo foi realizado no período de julho de 1983 a dezembro de 1984, nos municípios cearenses de Russas, Palhano, Limoeiro do Norte, Morada Nova, Canindé, Quixadá e Pereiro, os quais correspondem a parte da área endêmica da tripanossomíase ...
Marta E. Fabián
doaj   +1 more source

Optionality in animal communication: a novel framework for examining the evolution of arbitrariness

open access: yesBiological Reviews, Volume 97, Issue 6, Page 2057-2075, December 2022., 2022
ABSTRACT A critical feature of language is that the form of words need not bear any perceptual similarity to their function – these relationships can be ‘arbitrary’. The capacity to process these arbitrary form–function associations facilitates the enormous expressive power of language. However, the evolutionary roots of our capacity for arbitrariness,
Stuart K. Watson   +7 more
wiley   +1 more source

El tamaño, pero no la forma, reflejaría diferencias en las mandíbulas de dos especies de murciélagos de hoja nasal (Phyllostomus Lacépède, 1799) (Chiroptera, Phyllostomidae)

open access: yesGraellsia, 2018
La mandíbula es un modelo para la evolución de las estructuras morfológicas complejas debido a que presenta una integración del desarrollo de sus diferentes estructuras.
P. M. Parés-Casanova
doaj   +1 more source

Checklist of the Helminth Parasites of South American Bats [PDF]

open access: yes, 2015
My Brazilian co-author paid for this paper to be open--access.Copyright © 2001-2015 Magnolia Press. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and ...
Gibson, David I., Santos, CP
core   +1 more source

Mutual mother‐pup acoustic identification in Asian particolored bats

open access: yesEcology and Evolution, Volume 12, Issue 11, November 2022., 2022
This is the first use of two‐choice acoustic signal playback experiments to confirm that pups can recognize their mothers by echolocation calls. The results provide behavioral evidence for bidirectional recognition of acoustic signals between mothers and infants in frequency‐modulated type bats.
Xiao Tan   +4 more
wiley   +1 more source

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