Results 61 to 70 of about 3,600 (245)
Neotropical IchthyologySpatial and temporal variation in the benthic fish composition, species richness, density and biomass were studied in the lower rio Branco and its confluence with the rio Negro during the 1997-98 dry season (September to February).
Mario J. F. Thomé-Souza +1 more
doaj +1 more source
A new and improved electric fish finder with resources for printed circuit board fabrication [PDF]
Neotropical Ichthyology, 2019 We describe the circuit design, construction, and operation of a field-portable electric fish finder (an AC-coupled wide-band differential bio-amplifier with loudspeaker output).
Michael A. Haag +3 more
doaj +1 more source
CLOFFAR - update 3 - supplement to Checklist of the Freshwater Fishes of Argentina [PDF]
, 2017 In May 2016 we have published the second update to CLOFFAR and in these few months a total of 22 changes have summed up. The total number of fishes known from the freshwaters of Argentina has increased to 538, caused by one new Hoplias and 13 first ...
Koerber, Stefan +2 more
core
A case of intersex occurrence in Steindachneridion parahybae (Steindachner, 1877) (Siluriformes: Pimelodidae) under captivity condition: A cytogenetic and morphological study [PDF]
, 2016 Poco se sabe sobre la biología reproductiva de Steindachneridion parahybae , una especie de teleósteo gonocorístico en peligro de extinción que habita la cuenca del río Paraíba do Sul y en éste trabajo se describe por primera vez la aparición de ...
Caneppele, Danilo +4 more
core +2 more sources
Ecosphere, Volume 16, Issue 11, November 2025.Abstract Invasive species alter habitats and biological communities. The giant river prawn Macrobrachium rosenbergii (de Man 1879) was introduced to Brazil for aquaculture, and invasive populations have established in the Amazon Delta region where they are believed to pose a risk to the native aquatic fauna.
Aisha Carolina Cei +12 more
wiley +1 more source
Neotropical IchthyologyThe reproductive period and its relation with somatic and abiotic factors, the relative and absolute fecundity, spawning type, length of first maturation and sex ratio is describe for Gymnotus aff.carapo from a small lake at Itapuã State Park, Rio Grande
Diego de Paula Cognato +1 more
doaj +1 more source
Uso do ultra-som em programas de reprodução de peixes nativos [PDF]
, 2011 bitstream/CPAP/56070/1/COT62.pdfFormato ...
CREPALDI, D. V., ROTTA, M. A.
core
Ictiofauna epígea e subterrânea na área cárstica da Serra do Ramalho, nordeste brasileiro, com listas de peixes troglóbios e troglófilos no Brasil [PDF]
, 2008 After an ichthyofaunistic survey in several epigean (surface) water bodies of the Serra do Ramalho, southern Bahia, conducted in May 2007, 44 species were recorded; in addition, three non-troglomorphic (normally eyed and pigmented) and two troglomorphic ...
BICHUETTE, Maria Elina +3 more
core +1 more source
Mitochondrial genomes of the South American electric knifefishes (Order Gymnotiformes)
Mitochondrial DNA Part B, 2016 Three complete mitochondrial genomes of South American electric fishes (Gymnotiformes), derived from high-throughput RNA sequencing (RNA-Seq), are reported herein. We report the complete mitochondrial genome of the bluntnose knifefish Brachyhypopomus n.sp. VERD, determined from newly sequenced data.
Elbassiouny, Ahmed A. +8 more
openaire +3 more sources
River Research and Applications, Volume 41, Issue 9, Page 1949-1958, November 2025.ABSTRACT Local and regional species diversity is influenced by historical factors, resource availability, biotic interactions, the presence of resources, and adequate environmental conditions. We evaluated the effects of local environmental variables and spatial structure on fish species richness and composition along sandy beaches of a Neotropical ...
Ronaldo Souza da Silva +8 more
wiley +1 more source