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Morfologia pós-craniana de um novo espécime de Lestodon armatus Gervais, 1855 (Xenarthra, Mylodontidae) do quaternário do sul do Brasil
(Universidade Federal de Santa Maria, 2019-02-26)
During the Cenozoic of South America, the terrestrial sloths (Folivora) had wide adaptive irradiation that culminated in a great diversity of forms during the Pleistocene. Except for some arboreal species, most sloths were ...
Novos espécimes de Arcossauromorfos (Sauria: archosauromorpha) do Triássico inferior da América do Sul e suas implicações filogenéticas
(Universidade Federal de Santa Maria, 2019-02-28)
Archosauromorpha is defined as the clade that comprises all diapsids more closely related to the lineage of birds (Ornithodira) and crocodilians (Pseudosuchia) than with lepidosaurs. The main objective of this dissertation ...
Interação da alcalinidade e densidade de estocagem em juvenis de jundiá Rhamdia quelen (Heptapteridae)
(Universidade Federal de Santa Maria, 2005-08-15)
To evaluate interaction of water alkalinity and stocking density on body ionic levels, survival, growth and behavior of silver catfish, Rhamdia quelen, juveniles, a short-term experiment (96 h) analyzed the effect of three ...
Efeito do cálcio na dieta sobre o crescimento e a sobrevivência de juvenis de jundiá Rhamdia quelen (Heptapteridae) em diferentes pH da água
(Universidade Federal de Santa Maria, 2005-02-22)
The purpose of this study was to verify the effect of dietary Ca2+ on growth and survival of silver catfish fingerlings (Rhamdia quelen) exposed to different water pH (5.5; 7.5 and 9.0). Silver catfish fingerlings were ...
Metais em água, sedimento e duas espécies de peixes com diferentes níveis tróficos em um rio subtropical brasileiro
(Universidade Federal de Santa Maria, 2011-12-16)
In aquatic environments, heavy metals are produced from natural and anthropogenic
sources and the degree of contamination in fish tissues depend on pollutant type, fish
species, sampling site, trophic level and their ...
Jundiá: efeitos fisiológicos do óleo essencial de Lippia alba adicionado à ração
(Universidade Federal de Santa Maria, 2014-07-17)
The aim of this study was to evaluate the effect of the essential oil of Lippia alba (EOLA) as a feed additive on ionoregulatory and metabolic parameters, and pituitary hormones expression in silver catfish, Rhamdia quelen. ...
O que determina a variação do crânio em mamíferos? Avaliando as regras de Rensch e de Bergmann em primatas da América do Sul
(Universidade Federal de Santa Maria, 2016-08-29)
In this study our aim was to analyze if Rensch and Bergmann rules apply to South-American primates of the genera Sapajus and Alouatta, where males tend to be larger than females and if species tend to be larger at higher ...
Análise morfométrica da série molar inferior em Didelfídeos (Mammalia)
(Universidade Federal de Santa Maria, 2014-02-24)
Tribosphenic molars are considered major innovations of mammals and are related to different structures and variables that may explain their adaptation. The aim of this study was to verify the relationship of body size, ...
Análise do desenvolvimento das interações sociais do Tangará Chiroxiphia caudata (aves, Pipridae)
(Universidade Federal de Santa Maria, 2011-02-25)
The blue manakin Chiroxiphia caudata is a bird of the Pipridae family with distribution in the Atlantic Forests of Brazil, Argentina and Paraguay. Males have a lekking
polygynous system, aggregating in certain places that ...
Relações biogeográficas de mamíferos na região central da América do Sul
(Universidade Federal de Santa Maria, 2009-02-27)
The objective of this study was to analyze the influence of climatic and physiographic
variables in the geographic distribution of non-flying mammals in a central region of South
America. To examine the relationships ...