Results 41 to 50 of about 7,373 (259)

Autochthonous and allochthonous lactic acid bacteria: action on the hematological and intestinal microbiota for two species of Astyanax genus

Anais da Academia Brasileira de Ciências, 2022
The objective of this work was to evaluate the effect of autochthonous and allochthonous lactic acid bacteria (LAB) in two species of lambaris (Astyanax bimaculatus and Astyanax fasciatus), and to investigate the effects on intestinal microbiota and ...
ADOLFO JATOBÁ, GABRIEL F.A. JESUS
doaj   +1 more source

Unraveling the dietary diversity of Neotropical top predators using scat DNA metabarcoding: A case study on the elusive Giant Otter

Environmental DNA, Volume 3, Issue 5, Page 889-900, September 2021., 2021
A multi‐marker scat DNA metabarcoding approach was used to examine the dietary diversity of the world's largest and rarest otter, the iconic giant otter (Pteronura brasiliensis) from fecal DNA. The combined use of highly discriminant markers (COI and 12S) and of local reference databases of DNA barcodes offered a high accuracy of taxonomic assignments ...
Erwan Quéméré, Marie Aucourd, Valérie Troispoux, Sébastien Brosse, Jérôme Murienne, Raphaël Covain, Pierre‐Yves Le Bail, Jean Olivier, Niklas Tysklind, Maxime Galan   +9 more
wiley   +1 more source

Atresia of ovarian follicles in fishes, and implications and uses in aquaculture and fisheries

Journal of Fish Diseases, Volume 44, Issue 9, Page 1271-1291, September 2021., 2021
Abstract Atresia of ovarian follicles, that is the degenerative process of germ cells and their associated somatic cells, is a complex process involving apoptosis, autophagy and heterophagy. Follicular atresia is a normal component of fish oogenesis and it is observed throughout the ovarian cycle, although it is more frequent in regressing ovaries ...
Aldo Corriero, Rosa Zupa, Constantinos C. Mylonas, Letizia Passantino   +3 more
wiley   +1 more source

Inducción de micronúcleos y otras anormalidades nucleares en Astyanax gr. bimaculatus (Pisces: Characidae) expuestas a fenantreno [PDF]

Orinoquia, 2012
Título en ingles: Induction of micronuclei and other nuclear abnormalities in Astyanax gr. bimaculatus (Pisces: Characidae) exposed to phenanthreneTítulo en portugués: Indução de micronúcleos e de outras anormalidades nucleares em Astyanax gr. bimaculatus (Pisces: Characidae) expostos a fenantreno Resumen: El fenantreno es un hidrocarburo policíclico ...
Wilson Corredor-Santamaría, Cristián C. Mora-Romero, Paula S. Escobar-Buitrago, Pablo E. Cruz‐Casallas, Yohana M. Velasco‐Santamaría   +4 more
openalex   +5 more sources

Predation on pirarucu larvae by opportunistic fish species

Acta Amazonica, 2022
One of the constraints in pirarucu, Arapaima gigas farming is the reproduction in captivity, due to inconsistent number of spawning events per reproductive cycle, thus, unreliable availability of juvenile fish. This is a first-hand report on predation of
Adriana Ferreira LIMA, Anderson Guilherme Pereira dos REIS, Alberto AKAMA, Patricia Oliveira MACIEL-HONDA   +3 more
doaj   +1 more source

Oocyte adhesiveness and embryonic development ofAstyanax bimaculatus(Linnaeus, 1758) (Pisces: Characidae)

Zygote, 2012
SummaryThis study shows for the first time the presence of a jelly coat on oocytes of neotropical Characiformes fish. This structure could be responsible for the adhesiveness ofAstyanax bimaculatusoocytes, a species widely distributed in South America including in the São Francisco River basin in Brazil. Adult specimens ofA.
André Alberto, Weber, Fábio Pereira, Arantes, Yoshimi, Sato, Elizete, Rizzo, Nilo, Bazzoli   +4 more
  +8 more sources

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, MATTOX, George Mendes Taliaferro, SECUTTI, Sandro, TRAJANO, Eleonora   +3 more
core   +1 more source

Reprodução de peixes (Osteichthyes) em afluentes do reservatório de Volta Grande, Rio Grande, Sudeste do Brasil Fishes reproduction in the Volta Grande dam tributaries, Grande River, Southeastern Brazil

Iheringia: Série Zoologia, 2001
The most abundant species caught in the tributaries of the Volta Grande dam, Buriti, Divisa and Água Comprida streams were Plagioscion squamosissimus (Heckel, 1840), Pimelodus maculatus Lacépède 1803, Myleus tiete (Eigenmann & Norris, 1900), Astyanax ...
Francisco Manoel de Souza Braga
doaj   +1 more source

Revalidation of Saccocoelioides bacilliformis (Digenea, Haploporidae) parasitizing species of Astyanax (Characiformes, Characidae) from southern Brazil [PDF]

Iheringia: Série Zoologia, 2019
In Argentina, Saccocoelioides bacilliformis Szidat, 1973 was described from specimens collected probably in Astyanax bimaculatus (Linnaeus, 1758), but latter it was synonymyzed with Saccocoelioides octavus Szidat, 1970.
Moisés Gallas, Laura R. P. Utz
doaj   +1 more source

Diet and dietary overlap of three sympatric fish species in lakes of the upper Paraná River floodplain

Brazilian Archives of Biology and Technology, 1999
For a dietary study, specimens of Astyanax bimaculatus, Astyanax schubarti, and Moenkhausia intermedia were caught monthly with seines-nets in six lakes (Pau Veio, Porto Rico, Três Amigos, Mutum, Pontal, and Canal do Meio), on the floodplain of the Upper
Karla Danielle Gaspar da Luz, Edson Kiyoshi Okada   +1 more
doaj   +1 more source