Cryptic diversity within two widespread diadromous freshwater fishes (Teleostei: Galaxiidae) [PDF]
Ecology and EvolutionIdentification 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
doaj +3 more sources
A Review of Galaxias (Galaxiidae) Fossils from the Southern Hemisphere [PDF]
Diversity, 2020 The Galaxiidae is a Southern Hemisphere family of freshwater fish, considered to be of Gondwanan origin based on the current distribution of species in New Zealand, Australia (including Tasmania), New Caledonia, Africa, South America, and on some ...
Uwe Kaulfuss +4 more
doaj +5 more sources
Contrasting evolutionary responses in two co-distributed species of Galaxias (Pisces, Galaxiidae) in a river from the glaciated range in Southern Chile [PDF]
Royal Society Open Science, 2020 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
doaj +2 more sources
Pathology associated with larval Eustrongylides sp. (Nematoda: Dioctophymatoidea) infection in Galaxias maculatus (Actinopterygii: Galaxiidae) from Patagonia, Argentina [PDF]
International Journal for Parasitology: Parasites and Wildlife, 2019 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
doaj +2 more sources
Evolutionary Genetics and Biogeography of Galaxiid Fishes (Teleostei: Galaxiiformes: Galaxiidae) [PDF]
Diversity, 2021 Since the dawn of the discipline, biogeographers have wondered at the widespread distribution of galaxiid fishes throughout temperate regions of the Southern Hemisphere [...]
Graham P. Wallis
doaj +2 more sources
Phylogeography in Galaxias maculatus (Jenyns, 1848) along Two Biogeographical Provinces in the Chilean Coast. [PDF]
PLoS ONE, 2015 Major geologic and climatic changes during the Quaternary exerted a major role in shaping past and contemporary distribution of genetic diversity and structure of aquatic organisms in southern South America.
Claudio A González-Wevar +7 more
doaj +2 more sources
Latin American Journal of Aquatic Research, 2008 The nuclear DNA content (2C value) was determined in the commercial fish Galaxias maculatus (Galaxiidae) was determined by microdensitometry of erythrocyte nuclei after Feulgen staining; rainbow trout erythrocytes with a known 2C value were used as a ...
Pedro Jara-Seguel +3 more
doaj +2 more sources
Chronic experimental hyperoxia elevates aerobic scope: a valid method to test for physiological oxygen limitations in fish. [PDF]
J Fish Biol, 2022 Abstract Experimental hyperoxia has been shown to enhance the maximum oxygen uptake capacity of fishes under acute conditions, potentially offering an avenue to test prominent physiological hypotheses attempting to explain impacts of climate warming on fish populations (e.g., gill‐oxygen limitation driving declines in fish size).
Skeeles MR, Scheuffele H, Clark TD.
europepmc +2 more sources
Substrate size modifies stream grazer-biofilm interactions in the presence of invertivorous fish. [PDF]
Ecology, 2022 Abstract When herbivore abundance is controlled by predators there may be an indirect positive effect on primary producers due to reduced grazing pressure, but the potential of predation refuges to modify such trophic cascades has rarely been studied.
Albariño RJ +4 more
europepmc +2 more sources
Assessing Patterns and Risk to Chilean Freshwater Fish Distributions Using Multi-Species Occupancy Models. [PDF]
Ecol EvolTo advance our understanding of freshwater biodiversity in data‐limited systems, this study used multispecies occupancy models to predict species richness and individual species occupancy, providing critical insights for the conservation of these rapidly declining ecosystems.
Tracy EE +4 more
europepmc +2 more sources