Results 1 to 10 of about 383 (160)

Cryptic diversity within two widespread diadromous freshwater fishes (Teleostei: Galaxiidae) [PDF]

open access: goldEcology and Evolution, 2023
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
doaj   +7 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]

open access: goldRoyal 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   +3 more sources

Pathology associated with larval Eustrongylides sp. (Nematoda: Dioctophymatoidea) infection in Galaxias maculatus (Actinopterygii: Galaxiidae) from Patagonia, Argentina [PDF]

open access: goldInternational 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   +4 more sources

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

open access: goldLatin 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   +4 more sources

Evolutionary Genetics and Biogeography of Galaxiid Fishes (Teleostei: Galaxiiformes: Galaxiidae) [PDF]

open access: yesDiversity, 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]

open access: yesPLoS 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

A Review of Galaxias (Galaxiidae) Fossils from the Southern Hemisphere [PDF]

open access: yesDiversity, 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

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

open access: diamondMemorias 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   +2 more sources

A Global Assessment of Parasite Diversity in Galaxiid Fishes

open access: yesDiversity, 2021
Free-living species often receive greater conservation attention than the parasites they support, with parasite conservation often being hindered by a lack of parasite biodiversity knowledge.
Rachel A. Paterson   +4 more
doaj   +1 more source

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

Home - About - Disclaimer - Privacy