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Conspecific food competition explains variability in colony size: a test in magellanic penguins
(Ecological Society of America, 2002-12)
Food availability has been proposed as one of the main factors regulating population sizes in birds. Seabirds have provided evidence for the hypothesis that food depletion due to intraspecific competition explains variability ...
Climate change and lizards: changing species' geographic ranges in Patagonia
(Springer Heidelberg, 2014-08)
Ectothermic organisms strongly depend on temperature, making them an excellent model to study the impact of global climatic change (GCC). Under global warming, species may be forced to move toward colder environments, such ...
Performance of two-dimensional Doppler echocardiography for the assessment of infarct size and left ventricular function in rats
(Associação Brasileira de Divulgação Científica, 2006-05-01)
Although echocardiography has been used in rats, few studies have determined its efficacy for estimating myocardial infarct size. Our objective was to estimate the myocardial infarct size, and to evaluate anatomic and ...
The effect of size and diet on gonad production by the chilean sea urchin loxechinus albus
(WILEY-BLACKWELL, 2001)
Gonadal production was studied in Loxechinus albus (Molina, 1782) maintained in cages suspended from a long-line in the Estero Castro, Chiloe for 3 mo during the austral summer. The sea urchins were fed either an artificial ...
Fatores determinantes do tamanho corporal, forma do crânio e uso do espaço em mamíferos sul-americanos (Laurasiatheria), com ênfase em felídeos
(Universidade Federal de Santa MariaBrasilBioquímicaUFSMPrograma de Pós-Graduação em Biodiversidade AnimalCentro de Ciências Naturais e Exatas, 2017-04-26)
The characteristics of animals show similarities or differences according to the environment in which they are inserted and result in selection of characters that determine them, differentiating them phenotypically. ...
Do different methods yield equivalent estimations of brain size in birds?
(2020-08-31)
The ratio of brain size to body size (relative brain size) is often used as a measure of relative investment in the brain in ecological and evolutionary studies on a wide range of animal groups. In birds, a variety of ...
A revised geographical range for Liolaemus elongatus Koslowsky, 1896 (Squamata: Liolaemini) in Argentina: review of reported and new-data based distribution with new localities
(Firenze University Press, 2013-10)
Estimating the effective geographical ranges of species is central to species-oriented conservation and management. In this paper, we review the geographical distribution of Liolaemus elongatus Koslowsky, 1896 with three ...
Home range and habitat selection by the tropical screech-owl in a Brazilian savanna
(Raptor Research Foundation Inc, 2014)
Rates of description of Phytoseiidae mite species (Acari: Mesostigmata): space, time and body size variations
(SPRINGERDORDRECHT, 2012-01)
This study aims to analyse the degree of completeness of world inventory of the mite family Phytoseiidae and the factors that might determine the process of species description. The world data set includes 2,122 valid ...
Scaling copepod grazing in a coastal upwelling system: the importance of community size structure for phytoplankton C flux
(Pontificia Universidad Católica de Valparaíso, 2017)