Results 31 to 40 of about 1,126 (185)

Infections by Helminth Parasites in "Puyenes", Galaxias maculatus (Galaxiidae, Salmoniformes), from Southern Argentina with special reference to Tylodelphys barilochensis (Digenea, Platyhelminthes)

open access: yesMemorias do Instituto Oswaldo Cruz, 1999
The occurrence of Tylodelphys barilochensis, Acanthostomoides apophalliformis, Contracaecum sp. and Camallanus corderoi infecting Galaxias maculatus ("puyenes") was quantified for the first time in Lake Nahuel Huapi, southern Argentina. T.
J Revenga, P Scheinert
doaj   +1 more source

La estructura de las comunidades de helmintos de Galaxias maculatus (Osmeriformes: Galaxiidae) en diferentes sitios de un lago de la Patagonia argentina

open access: yesEcología Austral, 2015
La variación espacial de las comunidades de helmintos en un sistema acuático puede atribuirse a diferentes factores bióticos y abióticos. En América del Sur, este tipo de estudios no ha sido realizado en ambientes de agua dulce.
María Fernández   +2 more
doaj   +1 more source

Spawning, egg development and recruitment of diadromous galaxiids in Taranaki, New Zealand : a thesis presented in partial fulfilment of the requirements for the degree of Master of Science in Ecology at Massey University [PDF]

open access: yes, 2002
Spawning biology of Galaxias postvectis Clarke (shortjaw kokopu) was investigated in streams in northwest Taranaki, New Zealand. Most G. postvectis were found to spawn near their adult habitat on the river bank during spate flows between May 9 and 17 ...
Charteris, Sjaan Clare
core  

Two Germans, a Swede, and a Giant kōkopu: The Background to the Earliest Documented Description of a New Zealand Freshwater Fish

open access: yesNew Zealand Journal of Marine and Freshwater Research, Volume 60, Issue 2, June 2026.
Galaxiids are a family of scaleless and mostly small freshwater fish which are distributed across the temperate latitudes of the southern hemisphere. The largest member of this family is the giant kōkopu (Galaxias argenteus), which has the added distinction of being the first New Zealand freshwater fish of any kind to be scientifically described.
James Braund
wiley   +1 more source

Haemoglobin and size dependent constraints on swimbladder inflation in fish larvae [PDF]

open access: yes, 2006
In developmental studies of fish species (especially physostomians) it could be demonstrated, that the lack of haemoglobin during larval and juvenile stages is a relatively common phenomenon. Generally it is linked with body translucency.
Beeck, P.   +8 more
core  

Commentary: Trends and Tensions in Freshwater and Fisheries Management in Central Otago, New Zealand

open access: yesNew Zealand Journal of Marine and Freshwater Research, Volume 60, Issue 1, March 2026.
Recent resource management planning processes and decisions in Central Otago, New Zealand, illustrate changes in policy direction for freshwater management. These processes and decisions also highlight interactions between, and values associated with, indigenous and introduced sports fish.
Harvey C. Perkins, Niall R. N. Watson
wiley   +1 more source

Phylogenetics, divergence and morphology of New Zealand Eleotridae (Gobiomorphus Gill) : a thesis presented in partial fulfilment of the requirements for the degree of Master of Science in Ecology at Massey University, Palmerston North, New Zealand [PDF]

open access: yes, 2006
The genus Gobiomorphus Gill (1863) is the only representative freshwater Eleotridae in New Zealand and is comprised of seven species, of which four are diadromous.
Atkinson, Emily
core  

Nuclear DNA content in the red conger eel Genypterus chilensis (Guichenot, 1881) (Actinopterygii: Ophidiidae) [PDF]

open access: yes, 2012
Los estudios sobre contenido de ADN nuclear en el género Genypterus son escasos, y el presente trabajo entrega por primera vez la estimación del contenido de ADN nuclear de Genypterus chilensis con un valor 2C = 1,0 + 0,06 pg, valor cercano al descrito ...

core   +1 more source

Fishing‐Induced Regulation of Diadromous Fish Subsidies in Stream Communities

open access: yesFreshwater Biology, Volume 71, Issue 1, January 2026.
ABSTRACT Seasonal migrations of diadromous fish transport marine‐derived nutrients into freshwater ecosystems, enriching communities and restructuring food‐web dynamics. By diminishing these migrations, fishing pressure could disrupt cross‐ecosystem connectivity, thereby altering predator–prey interactions and community size structure.
Ben R. J. Crichton   +3 more
wiley   +1 more source

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