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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 ...
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 ...
Diversidade de caranguejos e estrutura populacional de Uca cumulanta Crane, 1943 (Decapoda: Brachyura: Ocypodidae) em um manguezal no Nordeste brasileiro
(Universidade Federal de Santa Maria, 2014-03-28)
The aim of this study was to describe the richness and composition of crabs (Crustacea: Brachyura) from four stations in the Rio Formoso mangrove, state of Pernambuco, and then characterize the population structure of the ...
Descrição de três novas espécies de Hyalella (Crustacea, Amphipoda, Hyalellidae) da região noroeste do estado do Rio Grande do Sul, Brasil
(Universidade Federal de Santa Maria, 2016-08-12)
Currently there are 68 species of Hyalella gender described, whereas in South America, the largest diversity of species is observed, 52 record species. The State of Rio Grande do Sul has nine species of this gender recorded. ...
História natural das serpentes de uma área do Pampa brasileiro
(Universidade Federal de Santa Maria, 2019-02-18)
Natural history studies of snake communities contribute both to increasing knowledge about the specific taxa biology and to elucidating interspecific relationships present in the community. Although the Brazilian Pampa ...
Análise genética em grupos mistos de bugio-ruivo e bugio-preto (Alouatta guariba clamitans e Alouatta caraya) em uma zona de contato em São Vicente do Sul, Rio Grande do Sul
(Universidade Federal de Santa Maria, 2017-10-03)
There are several reports of contact zones between two species of primates of the genus Alouatta, in a few cases, forming mixed groups. The morphological variation caused by the gene flow in hybrid primates has not yet ...