Contrasting evolutionary responses in two co-distributed species of Galaxias (Pisces, Galaxiidae) in a river from the glaciated range in Southern Chile [PDF]
Life-history traits are among the most important factors affecting population abundance and genetic diversity of species. Here, we analysed the genetic patterns of two Galaxias species with different life-history traits to investigate how these ...
P. F. Victoriano +7 more
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Cryptic diversity within two widespread diadromous freshwater fishes (Teleostei: Galaxiidae) [PDF]
Identification of taxonomically cryptic species is essential for the effective conservation of biodiversity. Freshwater‐limited organisms tend to be genetically isolated by drainage boundaries, and thus may be expected to show substantial cryptic ...
Charlotte Jense +8 more
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Pathology associated with larval Eustrongylides sp. (Nematoda: Dioctophymatoidea) infection in Galaxias maculatus (Actinopterygii: Galaxiidae) from Patagonia, Argentina [PDF]
Helminth infections within tissues tend to be subjected to a host response that can include encapsulation and melanization to isolate the parasite. The effectiveness of this response depends on the host species. During a survey of parasites of the native
Silvia Guagliardo +2 more
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Policy decisions matter: Cessation of logging benefits 34 threatened species in Victoria, Australia. [PDF]
In January 2024, the Australian state of Victoria committed to ending native forest logging six years ahead of schedule, a decision that has been advocated for by scientists and conservationists for decades.
Kita R Ashman +12 more
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Galaxias Enanas del Grupo Local
The satellite galaxies of the Milky Way are very important both for the studies of the formation and evolution of galaxies and for the research on the dark matter problem. In the present review paper some structural properties of the Local Group, as well
A Casallas Lagos +2 more
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Como se formaram as galáxias? [PDF]
Apresentamos aqui uma discussão pedagógica do processo de formação de estruturas (galáxias e além) no Universo, com um mínimo de formalismo e ênfase nas ideias físicas que colocam a instabilidade gravitacional como o principal agente do mesmo.
J.E. Horvath
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Complexidade em Astronomia e Astrofísica [PDF]
A Astronomia e a Astrofísica, em sinergia à Física e à Cosmologia Moderna e Contemporânea, têm como principal objetivo entender, por meio de métodos matemáticos, computacionais e observacionais, os processos (astro)físicos fundamentais relacionados à ...
Alan Alves-Brito, A. Cortesi
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Morphological Convergence and Divergence in Galaxias Fishes in Lentic and Lotic Habitats
The influence of contrasting lentic and lotic hydrological environments on the morphology of members of the Galaxias vulgaris species complex was examined.
Nicholas R. Dunn +3 more
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As galáxias espirais normais possuem um núcleo, disco, bojo, halo e braços espirais. Esses sistemas despertam muita curiosidade, atração e questionamentos científicos e consequentemente, muitos estudos e técnicas são propostas para análise destas ...
Stella Faria Costa +2 more
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The Role of Supercomputing in Research: Astrophysics of Galactic Nuclei and Black Holes
This article is based on the application of supercomputing techniques through an example in the investigation of the astronomical phenomena of evolution of galactic nuclei and black holes within the time period of the Universe’s existence.
José Antonio Fiestas-Iquira
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