Results 31 to 40 of about 54,951 (227)

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

Acta 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, Patricia MATOS, Márcia N. S SANTOS, Carlos AZEVEDO   +3 more
doaj   +1 more source

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

The 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, Luke E. Nelson, Joshua A. Doyon, Donald B. Brinkman, Alison M. Murray   +4 more
wiley   +1 more source

Registros novos e adicionais de teleósteos marinhos na costa brasileira

Papéis 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, José Lima de Figueiredo, Roberto Ávila Bernardes   +2 more
doaj   +1 more source

Integrative taxonomy reveals a new species of the soapfish genus Rypticus (Teleostei: Grammistidae) from the eastern Atlantic Ocean. [PDF]

J Fish Biol
Abstract A new species of the soapfish genus Rypticus is described based on 14 specimens from the eastern Atlantic Ocean. The new species was previously misidentified as the greater soapfish, R. saponaceus, due to their similar appearance. However, it differs from R.
Araujo GS, Sampaio CLS, Rocha LA, Ferreira CEL.   +3 more
europepmc   +2 more sources

Molecular and fossil evidence place the origin of cichlid fishes long after Gondwanan rifting. [PDF]

, 2013
Cichlid fishes are a key model system in the study of adaptive radiation, speciation and evolutionary developmental biology. More than 1600 cichlid species inhabit freshwater and marginal marine environments across several southern landmasses.
Alex Dornburg, Benjamin P. Keck, C. Darrin Hulsey, Christopher H. Martin, Matt Friedman, Matt Friedman, Peter C. Wainwright, Ron I. Eytan, Thomas J. Near, Thomas J. Near   +9 more
core   +1 more source

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

Oikos, 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, Taryn Sepúlveda, Cristóbal Rivera, Cristian Aldea, Tomás I. Marina   +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

Revista 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

Species recognition by the sequence of discharge intervals in weakly electric fishes of the genus Campylomormyrus (Mormyridae, Teleostei) [PDF]

, 1994
In two Campylomormyrus species, tamandua and rhynchophorus from Central Africa, the electric organ discharge (EOD) activity was studied during the nocturnal activity phase in the laboratory. Both species have a pulse-type EOD of less than 200 μs duration
Kramer, Bernd, Kuhn, Birgit
core   +1 more source

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

Integrative 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, Gustavo Akira Toma, Jhon Alex Dziechciarz Vidal, Manuel Angel Garrido‐Ramos, Guilherme Mota Souza, Rodrigo Zeni Dos Santos, Fábio Porto‐Foresti, Thomas Liehr, Ricardo Utsunomia, Marcelo de Bello Cioffi   +9 more
wiley   +1 more source

New species of the genus Thrissops (Teleostei, Ichthyodectiformes) in the Upper Jurassic of the Solnhofen-Archipelago (Germany) and Kimmeridge Clay (England) [PDF]

Zitteliana
Two new species of the poorly known genus Thrissops (Teleostei, Ichthyodectiformes) are described here in detail. Thrissops ettlingensis sp. nov.
Martin Ebert
doaj   +3 more sources