Results 71 to 80 of about 7,850 (167)

Anatomia encefálica comparada de serrasalmidae (Ostariophysi: Characiformes) [PDF]

, 2021
Serrasalmidae is a family of neotropical fish belonging to the order Characiformes composed of 16 genera, 100 living species and one fossil, and are popularly known as piranhas and pacus.
Borges, Sharles Gabriel de Souza
core  

Genetic Structure and Conservation Strategies for the Endangered Catfish Steindachneridion melanodermatum (Siluriformes, Pimelodidae) in the Iguaçu River, Brazil

Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 6, June 2026.
ABSTRACT The endemic catfish Steindachneridion melanodermatum from the Iguaçu River basin, southern Brazil, is one of the most threatened pimelodid species. Comprehension of its genetic structure is imperative to the formulation of long‐term efficacious conservation strategies. A genetic analysis was conducted on three populations from the lower Iguaçu
Jesús Hernández‐Gómez, Caio Felipe da Silva, Carolina de Oliveira Magalhães, Bruno Henrique Mattiello, Juliano Tupan Coragem, Ricardo Utsunomia, Fabio Porto‐Foresti, Fernanda Dotti do Prado, Roberto Ferreira Artoni   +8 more
wiley   +1 more source

A new sexually dimorphic Hyphessobrycon from the western Amazon basin (Characiformes: Characidae)

, 2022
Lima, Flávio C.T., Bastos, Douglas A., Rapp Py-Daniel, Lúcia H., Ota, Rafaela P. (2022): A new sexually dimorphic Hyphessobrycon from the western Amazon basin (Characiformes: Characidae).
Rapp Py-Daniel, Lúcia H., Bastos, Douglas A., Lima, Flvio C T, Ota, Rafaela P., Py-Daniel, Lcia H Rapp, Lima, Flávio C.T.   +5 more
core   +1 more source

Two new Hyphessobrycon (Characiformes: Characidae) species from Central Amazon basin, Brazil

, 2017
Lima, Flávio C. T. (2017): Two new Hyphessobrycon (Characiformes: Characidae) species from Central Amazon basin, Brazil. Zootaxa 4318 (1): 123-134, DOI: https://doi.org/10.11646/zootaxa.4318.1.
Lima, Flávio C. T.
core   +1 more source

Effect of photoperiod on ovarian maturation in Cheirodon interruptus (Teleostei: Characidae)

Brazilian Journal of Biology, 2018
Cheirodon interruptus is a ubiquitous small characid that inhabits the Pampean region and commonly used as bait. Its vast market is supplied from the wild population causing a significant environmental impact.
I. D. García, S. E. Plaul, D. Torres, P. S. Del Fresno, L. A. Miranda, D. C. Colautti   +5 more
doaj   +1 more source

Das Typusmaterial der Characiformes des Museums für Naturkunde zu Berlin. Teil 2b (3): Südamerikanische Characiformes im weiteren Sinne (Teleostei: Ostariophysi: Characiformes: Serrasalmidae, Acestrorhynchidae, Erythrinidae, Lebiasinidae)

, 2012
The type specimens of the Characiformes (Teleostei: Ostariophysi) of the Museum of Natural History of Berlin are listed, investigated and discussed. Each taxon is figured with his historical original picture (or a picture by the author of the original ...
Zarske,Axel, Zarske, Axel
core   +1 more source

Characterization and comparative genomic analysis of satellite DNAs in the

Heliyon
Repetitive DNAs, particularly satellite DNA (satDNA), constitute some of the most dynamic elements of eukaryotic genomes; however, their role in evolutionary diversification remains insufficiently understood.
HG Silva-Filho, Rodrigo Zeni dos Santos, Caio Augusto Gomes Goes, Gustavo Akira Toma, MB Cioffi, F Foresti, Fabio Porto Foresti, Ricardo Utsunomia   +7 more
doaj   +1 more source

Sperm Characteristics As Additional Evidence Of Close Relationship Between Lebiasina And Piabucina (characiformes: Lebiasinidae: Lebiasininae)

, 2015
Spermiogenesis and spermatozoa of representatives of the genera Lebiasina and Piabucina are described. Spermiogenesis is quite similar among all analyzed species of these genera and is identified as Type II.
De Santana J.C.O., Quagio-Grassiotto I., Calcagnotto D., Netto-Ferreira A.L.   +3 more
core   +1 more source

Reproducción de peces y consideración de ambientes en eventos de crecidas en el río Portuguesa, Venezuela Reproduction of fishes in flooding events of Portuguesa River, Venezuela

Bioagro, 2004
Se reporta la reproducción de peces en eventos de crecidas del río Portuguesa, Venezuela. En los llanos altos (alrededor de 100 msnm) y sólo en velocidades específicas de crecida (mayores de 0,59 m/s) fueron colectados huevos de peces que presentaron ...
Douglas Rodríguez-Olarte, Christophe Kossowski   +1 more
doaj  

Two new species of Creptotrema (Digenea: Allocreadiidae) from South America Dos especies nuevas de Creptotrema (Digenea: Allocreadiidae) de América del Sur

Revista Mexicana de Biodiversidad, 2008
Two new digenean species belonging in Creptotrema Travassos, Artigas and Pereira, 1928 are described from specimens stored in the invertebrate collection at the Museum of Natural History, Geneva, Switzerland. Creptotrema lamothei n. sp. is described from
Stephen S. Curran
doaj