Results 11 to 20 of about 18,419 (210)

Volumen 5 (1)

Ecología Austral, 2016
Volumen 5 (1)
Ecología Austral
doaj  

Body mass and sex estimation from lower carnassial tooth morphometry in the endangered Iberian wolf (Canis lupus signatus): An ecomorphological analysis of sexual size dimorphism

The Anatomical Record, EarlyView.
Abstract The Iberian wolf (Canis lupus signatus) is an endangered subspecies characterized by highly fragmented populations and increasing human–carnivore conflict across the Iberian Peninsula. Although body mass strongly influences predator–prey dynamics and ecological performance, quantitative assessments of sexual size dimorphism (SSD) and body mass
Leonardo Cotts, Eduardo Rossener, Ricardo Moratelli, Maria da Luz Mathias, Oscar Rocha‐Barbosa   +4 more
wiley   +1 more source

Volumen 6 (2)

Ecología Austral, 2016
Volumen 6 (2)
Ecología Austral
doaj  

Redescription of †Eobrasilia coutoi (Metatheria: Polydolopimorphia), a unique sclerocarpophagous metatherian from the Palaeogene of South America: Systematic affinities, and paleoecological and evolutionary implications

The Anatomical Record, EarlyView.
Abstract The ‘Palaeogene strata’ of the Itaboraí Basin (upper Paleocene‐lower Eocene), Southeastern Brazil, has preserved 29 genera and almost 50 species of metatherians (about 65% of its mammalian diversity). Among them, Eobrasilia coutoi Simpson, 1947 is the most enigmatic due to its quite fragmentary nature.
Leonardo M. Carneiro, Hugo Bampi, Ana C. Bernardes‐Dias, Lidiane Asevedo, João P. P. Araújo, Matheus R. Arêas, Alessandra S. Machado, Ricardo T. Lopes, Rafael C. Silva, Marina B. Soares, Gustavo R. Oliveira   +10 more
wiley   +1 more source

Volumen 16 (1)

Ecología Austral, 2006
Volumen 16 (1)
Ecología Austral
doaj  

Morphological plasticity in the dentition of the lungfish Gnathorhiza from the Permian of Brazil: A population‐level geometric morphometric analysis

The Anatomical Record, EarlyView.
Abstract Dental plates are pivotal in the lungfish paleontological record, constituting highly mineralized structures resilient to diagenetic processes. This study provides a detailed description and quantitative shape analysis of 95 newly discovered Gnathorhiza sp. dental plates from the Middle–Late Permian Corumbataí Formation, Brazil.
Mauro B. S. Lacerda, Gustavo H. N. Petreca, Gabriel E. B. de Barros, Ana Emilia Quezado, Marcelo A. Fernandes   +4 more
wiley   +1 more source

Volumen 13 (1)

Ecología Austral, 2016
Volumen 13 (1)
Ecología Austral
doaj  

Climatic thresholds and temporal decoupling drive reproductive phenology in Neotropical cloud forests: a 36‐year analysis

Ecography, EarlyView.
Reproductive phenology influences ecosystem functioning and climate sensitivity in tropical montane cloud forests, but phase‑specific climatic thresholds and the temporal coupling between flowering and fruiting remain poorly quantified over decadal scales. We analyzed a 36‑year monthly record (1983–2018) from a Venezuelan cloud forest (15 focal species)
Saúl Flores, Nuriangel Casanova‐Hernández, Hendrik Sulbaran‐Pineda   +2 more
wiley   +1 more source

Volumen 15 (1)

Ecología Austral, 2016
Volumen 15 (1)
Ecología Austral
doaj  

Sex‐Specific Early Life Corticosterone Stress‐Coping Capacity Is Linked to Mitochondrial Content and Telomere Maintenance

Journal of Experimental Zoology Part A: Ecological and Integrative Physiology, EarlyView.
ABSTRACT Glucocorticoids are upregulated during acute challenges, contributing to maintenance of energy balance. However, if this upregulation exceeds a threshold or becomes chronic, it can lead to harmful effects. Investigating the factors behind between‐individual variation in the magnitude of the response to acute stress and how effectively ...
Mauricio Guillen‐Parra, Alberto Velando, Bibiana Montoya, Roxana Torres   +3 more
wiley   +1 more source