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Genética de populações de Aegla longirostri (crustacea, decapoda, anomura) da região central do Rio Grande do Sul
(Universidade Federal de Santa Maria, 2009-03-31)
The Aeglidae are Decapoda crustaceans endemic from the neotropical region of South
America. They are the only anomuran family entirely restricted to freshwater, occurring
mainly in streams. Requirement for well conserved ...
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 ...
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 ...
Níveis iônicos no plasma e no conteúdo do trato gastrintestinal de teleósteos coletados em diferentes salinidades
(Universidade Federal de Santa Maria, 2008-02-12)
Seawater teleost fish are hyposmotic to their environment and as a consequence must deal with a constant diffusive loss of water and a net gain of salts. In contrast to living in seawater, teleosts fish in a freshwater ...
Variabilidade genômica dos elementos transponíveis em espécies do grupo mesophragmatica do gênero Drosophila
(Universidade Federal de Santa Maria, 2005-04-25)
The mesophragmatica group belongs to the radiation virilis-repleta of the Drosophila subgenus, it was established by Brncic and Koref in 1957. The species of this group present some characteristics of isolated endemic ...
A variabilidade populacional do elemento de transposição mariner na espécie Drosophila simulans e sua descoberta em Drosophila melanogaster
(Universidade Federal de Santa Maria, 2009-10-09)
Transposable elements are DNA sequences that can change their location within the genome and can be found in almost all organisms. The mariner transposable element belongs to Class II, Tc1-mariner superfamily. An inactive ...
Isolamento e caracterização de microssatélites em Aegla longirostri (Crustacea, Decapoda, Anomura)
(Universidade Federal de Santa Maria, 2007-02-27)
Aeglidae is the only freshwater anomuran family. Fossil evidences relate a marine origin for aeglids. However, genus Aegla invaded the freshwater environment of
southern South America, becoming endemic and widespread in ...
Investigação sobre a presença de retrotransposons em populações naturais do grupo cardini do gênero Drosophila (Diptera: Drosophilidae) do sul do Brasil
(Universidade Federal de Santa Maria, 2005-02-24)
The cardini group is part of the genus Drosophila and has its geographical distribution in the Neotropics. Some previous studies revealed the high variability in species of this group of flies. Transposable elements are ...
Efeitos da implantação da usina hidrelétrica Dona Francisca (RS, Brasil) sobre estágios imaturos de Odonata (Insecta)
(Universidade Federal de Santa Maria, 2009-02-26)
This study was carried out with the purpose to evaluate the short-term impact of a dam construction on the community of the immature Odonata through their analysis in lentic and lotic environments, before and after the ...