Results 11 to 20 of about 1,126 (185)

Chronic experimental hyperoxia elevates aerobic scope: a valid method to test for physiological oxygen limitations in fish. [PDF]

open access: yesJ 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]

open access: yesEcology, 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]

open access: yesEcol Evol
To 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

The fossil vertebrate primary type specimens in the collection of the University of Otago Department of Geology. [PDF]

open access: yesJ R Soc N Z
ABSTRACT The 47 vertebrate type specimens held in the University of Otago Geology Department are catalogued in detail. A short history of the collection is followed by lists of the type specimens under the Classes Actinopterygii, Reptilia, Aves and Mammalia. A fish trace‐fossil is included at the end of the Actinopterygii.
Robinson JH   +4 more
europepmc   +2 more sources

Historical and Contemporary Diversity of Galaxiids in South America: Biogeographic and Phylogenetic Perspectives

open access: yesDiversity, 2020
Galaxiid fishes from South America are represented by three genera (Aplochiton, Brachygalaxias and Galaxias) and eight species. Their genetic patterns have been studied over the last two decades to disentangle how historical and contemporary processes ...
Iván Vera-Escalona   +3 more
doaj   +1 more source

New Insights into the Distribution, Physiology and Life Histories of South American Galaxiid Fishes, and Potential Threats to This Unique Fauna

open access: yesDiversity, 2020
South American galaxiids occupy both Patagonia and the ichthyogeographic Chilean Province, encompassing glacial Andean deep lakes, shallow plateau lakes, reservoirs, short Pacific rivers and long Atlantic rivers. The total fish fauna includes 29 species,
Víctor Enrique Cussac   +6 more
doaj   +1 more source

Spatiotemporal patterns of research on Southern Hemisphere amphidromous galaxiids: A semi–quantitative review

open access: yesAustral Ecology, Volume 48, Issue 5, Page 835-854, August 2023., 2023
Amphidromous galaxiids are found across the Southern Hemisphere, and given their migratory behaviour are vulnerable to a multitude of threats. Here we present the results of a semi‐quantitate review of peer‐review literature published on six species of amphidromous galaxiids over the last six decades.
Finnbar Lee   +5 more
wiley   +1 more source

Cephalic sensorial pores in galaxiid fishes from Chile (Osmeriformes: Galaxiidae)

open access: yesLatin American Journal of Aquatic Research, 2014
The number and arrangement of the cephalic pores of the lateral line in Chilean fishes of the family Galaxiidae, were studied. The study showed that Brachygalaxias differs from Galaxias, in the absence of mandibular pores and in pore number reductions in
Sylvia Sáez, Germán Pequeño
doaj   +1 more source

A new species of mudfish, Neochanna (Teleostei: Galaxidae), from northern New Zealand [PDF]

open access: yes, 2001
A new species of mudfish, Neochanna, is described from Northland. Neochanna heleios n.sp. is known from only three ephemeral wetland sites on the Kerikeri volcanic plateau and is abundant only at the type locality.
Eldon G A   +5 more
core   +2 more sources

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