Results 31 to 40 of about 42,434 (226)

Historical information on common carp (Cyprinus carpio) in Norway

open access: yesFauna Norvegica, 2013
The common carp (Cyprinus carpio Linnaeus, 1758) is an introduced fish species in Norway over the past 300 years. Many attempts have been conducted in order to try to create self-sustaining populations, but the species is very rare.
Einar Kleiven
doaj   +1 more source

Patterns of the electric organ discharge during courtship and spawning in the mormyrid fish, Pollimyrus isidori [PDF]

open access: yes, 1989
Pollimyrus isidori's electric organ discharge (EOD) is of the pulse type. Patterns of EOD intervals were investigated prior to, during and following spawning behaviors as related with overt behaviors, and with the sound production by the nestbuilding ...
Bratton, Bradford O., Kramer, Bernd
core   +1 more source

Hippopotamyrus ansorgii species complex in the Upper Zambezi River System with a description of a new species, H. szaboi (Mormyridae) [PDF]

open access: yes, 2004
Specimens referable to Hippopotamyrus ansorgii sampled from the Upper Zambezi River System within Caprivi (Namibia) represent a complex of three species, two of which coexist in the Upper Zambezi River, and a third that inhabits a nearby river, the ...
Kramer, Bernd   +2 more
core   +1 more source

FEEDING INTERACTION OF THE NON-NATIVE AFRICAN CATFISH (Clarias gariepinus BURCHELL, 1822) IN ITANHÉM RIVER ESTUARY, BAHIA, BRAZIL

open access: yesBrazilian Journal of Oceanography, 2014
A total of 214 stomachs of Clarias gariepinus, Centropomus undecimalis and C. parallelus from the Itanhém and Caravelas Rivers, northeastern Brazil, were analyzed to investigate the impact of the non-native species Clarias gariepinus on the Itanhém River
Leandro Bonesi Rabelo   +1 more
doaj   +1 more source

Aspectos morfológicos e ultraestruturais do Espermatozóide de Curimata Inornata Vari, 1989 (Pisces, Teleostei) do Rio Amazonas [PDF]

open access: yesActa Amazonica, 1998
Estão descritos aspectos morfológicos e ultraestruturais do espermatozóide de Curimata inornata Vavi, 1989 (Pisces,Teleostei) observados com microsopia óptica e microscopia eletrônica de transmissão.
Edilson MATOS   +3 more
doaj   +1 more source

Cranial anatomy of a Late Cretaceous aspidorhynchid fish (Neopterygii: Aspidorhynchiformes) from Alberta, Canada

open access: yesThe Anatomical Record, EarlyView.
Abstract Belonostomus longirostrisis was named for an isolated jaw fragment from freshwater Upper Cretaceous (Campanian) sediments of the Dinosaur Park Formation of Alberta, Canada. Following the description of the Albertan species, numerous isolated cranial and postcranial elements have been collected from the Dinosaur Park Formation and assigned to B.
Mondo Miyazato   +4 more
wiley   +1 more source

Records of Copiatestes filiferus (Leukart, in Sars, 1885) Gibson and Bray, 1977 (Digenea) and Gorgorhynchus sp. (Acanthocepahala) of marine fish from peruvian coast

open access: yesRevista Peruana de Biología, 2013
In this paper, Copiatestes filiferus (Leukart, in Sars, 1885) Gibson and Bray, 1977 (Digenea) and Gorgorhynchus sp. (Acanthocephala) parasites of Hemilutjanus macrophthalmos (Teleostei), both parasites are new records from Peru and the fish is a new host.
Manuel Tantaleán V, Marianne Lefevre
doaj   +1 more source

Marine trophic architecture and hidden ecological connections in the Strait of Magellan: keystone species and ecosystem resilience

open access: yesOikos, EarlyView.
Understanding the ecological implications of species coexistence is central to biodiversity studies and to identify environmental and anthropogenic drivers of ecosystem dynamics, where ecological network analysis offers valuable insights. This study examines the complexity, structure, and potential responses to disturbances of the Strait of Magellan's ...
Claudia D. Andrade   +4 more
wiley   +1 more source

Registros novos e adicionais de teleósteos marinhos na costa brasileira

open access: yesPapéis Avulsos de Zoologia, 2008
São apresentadas novas informações sobre a distribuição geográfica de algumas espécies de peixes teleósteos que ocorrem na costa brasileira, incluindo duas espécies que nunca haviam sido registradas em nossas águas.
Rodrigo Antunes Caires   +2 more
doaj   +1 more source

Comparative Satellitomics in Arowanas (Telostei, Osteoglossiformes) Sheds Light on the Evolution of Ancient Satellite DNAs

open access: yesIntegrative Zoology, EarlyView.
This work focused on arowana fishes (Teleostei, Osteoglossiformes) as a model; their widespread intercontinental distribution and basal phylogenetic position within Teleostei make them a compelling model for evolutionary research, especially in the realm of satDNA molecular evolution. Through the integration of genomic and chromosomal data, we analyzed
Fernando Henrique Santos de Souza   +9 more
wiley   +1 more source

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