Results 81 to 90 of about 15,184 (259)
Phylogeny of the Serrasalmidae (Characiformes) based on mitochondrial DNA sequences [PDF]
Genetics and Molecular Biology, 2008 Previous studies based on DNA sequences of mitochondrial (mt) rRNA genes showed three main groups within the subfamily Serrasalminae: (1) a "pacu" clade of herbivores (Colossoma, Mylossoma, Piaractus); (2) the "Myleus" clade (Myleus, Mylesinus, Tometes, Ossubtus); and (3) the "piranha" clade (Serrasalmus, Pygocentrus, Pygopristis, Pristobrycon ...
Ortí, Guillermo +3 more
openaire +5 more sources
Ecology of Freshwater Fish, Volume 34, Issue 4, October 2025.ABSTRACT The Neotropical catfish family Trichomycteridae contains parasitic fishes that include scale and mucus feeders (subfamily Stegophilinae) and blood feeders (i.e., ‘candirus’, subfamily Vandelliinae). The influence of parasitic catfishes on food web dynamics is unknown.
Carmen G. Montaña +7 more
wiley +1 more source
A checklist of chromosome numbers and karyotypes of Amazonian freshwater fishes [PDF]
, 1992 Une liste des nombres de chromosomes de 211 espèces de poisson du bassin amazonien est présentée. Ces espèces, appartenant à 5 ordres, sont caractérisées par une grande variabilité du nombre de chromosomes (2n = 22 à 2n = 134), par la présence de ...
Falcao, J. +3 more
core
Early ontogeny of tetra Markiana nigripinnis (Characiformes: Characidae)
Neotropical Ichthyology, 2023 Abstract The early development of Markiana nigripinnis is described by morphological characters, pigmentation, and morphometry. Larvae were obtained through semi-natural breeding, collected, fixed, and identified according to their development. Eighty individuals with standard lengths ranging from 3.1 to 24.3 mm were analyzed.
Mateus Babichi Veiga de Souza +3 more
openaire +3 more sources
The elusive scleral cartilages: Comparative anatomy and development in teleosts and avians
The Anatomical Record, Volume 308, Issue 7, Page 1838-1850, July 2025.Abstract The sclera of all vertebrate eyes is comprised of connective tissue, with some organisms developing cartilage within this tissue. A review of the cartilages that have been described in the vertebrate sclera and their anatomical relationships is discussed together with their potential homology.
Tamara A. Franz‐Odendaal
wiley +1 more source
Environmental DNA, Volume 7, Issue 4, July–August 2025.Using eDNA metabarcoding, we assessed fish diversity in isolated sinkholes in southern Brazil, uncovering signs of local extinction and species persistence. This approach offers a non‐invasive tool for biodiversity assessment and informs conservation efforts in unique karst environments.
Luz E. De la Ossa‐Guerra +5 more
wiley +1 more source
Structure et minéralisation des écailles de quelques Characiformes de Guyane (Osteichthyes, Teleostei) [PDF]
, 1994 Les écailles de cinq espèces de Characiformes (#Leporinus friderici$, #Anastomidae$ ; #Triportheus rotundatus$, #Characidae$ ; #Curimata cyprinoides$, #Curimatidae$ ; #Hoplias aimara$, #Erythrinidae$ ; #Myleus romboidalis$, #Serrasalmidae$) ont été ...
Meunier, F.J.
core
Low‐Effort eDNA Sampling Reveals Fish Community Patterns in a Neotropical River Basin
Environmental DNA, Volume 7, Issue 4, July–August 2025.Low eDNA sampling effort (< 10 sample sites) using a portable on‐site kit with syringe filters and a modest water volume (< 500 mL per site) provided a rapid and robust snapshot of fish biodiversity. Environmental DNA based species richness increases along the upstream‐downstream gradient showing a significant negative correlation with river elevation ...
Daniel Cardoso Carvalho +4 more
wiley +1 more source
Biota Colombiana, 2017 Se amplía la distribución de Microgenys minuta (Characiformes, Characidae) desde la sección medio-alta del río Cauca y el tramo alto del río Magdalena hasta la porción media de la cuenca del río Magdalena, con base en ejemplares colectados en el ...
Lina M. Mesa S., Juan Gabriel Albornoz
doaj +1 more source
Ictiofauna do Rio Jurubatuba, Santos, São Paulo: um refúgio de diversidade em terras impactadas [PDF]
, 2010 Ichthyofaunistic surveys in the Atlantic Rainforest have been published in relatively few works, in spite of the major biological importance of this once vast biome which is rapidly vanishing due to disordered human population growth and natural ...
IGLESIAS, José Manoel Pires +1 more
core +1 more source