Results 41 to 50 of about 698 (176)

Os peixes de um lago de várzea da Amazônia Central (Lago Janauacá, Rio Solimões) e suas relações com os crustáceos ectoparasitas (Branchiura: Argulidae) [PDF]

open access: yesActa Amazonica, 1984
Durante um período de treze meses, de março de 1979 a março de 1980, excursões semanais foram realizadas ao Janauacá, um complexo de, l.agos de várzea da Amazônia Central. Miltrezentos e trinta e cinco peixesde cinco ordens, dezenove famílias e.
José Celso de Oliveira Malta
doaj   +1 more source

Marcusenius elegans: a replacement name for Marcusenius gracilis Kramer 2013 (Osteoglossiformes: Mormyridae), a secondary junior homonym of Marcusenius senegalensis gracilis (Pellegrin 1922)

open access: yes, 2022
Fricke, Ronald, Kramer, L. Bernd (2022): Marcusenius elegans: a replacement name for Marcusenius gracilis Kramer 2013 (Osteoglossiformes: Mormyridae), a secondary junior homonym of Marcusenius senegalensis gracilis (Pellegrin 1922). Zootaxa 5175 (4): 499-
Fricke, Ronald   +2 more
core   +1 more source

Heart structure in the Amazonian teleost Arapaima gigas (Osteoglossiformes, Arapaimidae) [PDF]

open access: yesJournal of Anatomy, 2018
AbstractThe fish heart ventricle has varied morphology and may have a specific morpho‐functional design in species adapted to extreme environmental conditions. In general, the Amazonian ichthyofauna undergoes constant variations in water temperature, pH and oxygen saturation, which makes these species useful for investigations of cardiac morphology ...
Mario Vitor Buzete Gardinal   +6 more
openaire   +3 more sources

First Report on the Karyotype of the Freshwater Weakly Electric Fish; Marcusenius brucii (Osteoglossiformes: Mormyridae) in Asejire Reservoir, Osun River Basin, Nigeria [PDF]

open access: yes, 2022
The weakly electric fishes of the family Mormyridae are one of the dominant fish groups in Africa; they are represented in all the major freshwater bodies in the tropical regions of the continent, except the Southernmost Cape Provinces, the Sahara and ...
O. I, Jegede,
core   +1 more source

Olfactory Sensory Neuron Morphotypes in the Featherback Fish, Notopterus notopterus (Osteoglossiformes: Notopteridae) [PDF]

open access: yesAnnals of Neurosciences, 2014
As in other vertebrates, olfactory sensory neurons (OSNs) in fishes are the main components of sensory part of olfactory epithelium that relay olfactory information (smell and taste) to the brain.Objective of the present study was to analyze if any polymorphism occurs in the OSNs in a featherback fish, Notopterus notopterus as far as the teleost ...
Patle, Pratap J., Baile, Vidya V.
openaire   +2 more sources

The gas bladder of Heterotis niloticus (Cuvier, 1829)

open access: yesJournal of Morphology, Volume 284, Issue 5, May 2023., 2023
The respiratory bladder of Heterotis niloticus is an alveolated structure, highly vascularized, that accumulates eosinophils that may be involved in immune defense. The bladder dorsolateral and ventral walls exhibit exchange barriers indicating high capability for gas exchange.
José M. Icardo   +5 more
wiley   +1 more source

Fatty acid profile, omegas and lipid quality in commercial cuts of pirarucu (Arapaima gigas Schinz, 1822) cultivated in excavated tanks

open access: yesActa Scientiarum: Animal Sciences, 2023
The study aimed to determine the fatty acid profile, omegas and lipid quality indeces in commercial cuts of pirarucu (Arapaima gigas) of the slaughter class 11.1 to 14.0 kg.
Jucilene Cavali   +6 more
doaj   +1 more source

Diversity of Balbiani body formation in internally and externally fertilizing representatives of Osteoglossiformes (Teleostei: Osteoglossomorpha).

open access: yesJournal of morphology, 2021
During the early stages of oogenesis, the Balbiani body is formed in the primary oocytes. It consists of the Golgi apparatus, endoplasmic reticulum (ER), and numerous mitochondria aggregated with germ plasm, but its form may differ among animals. Hypothetically, during oogenesis oocytes become adapted to future development in two different environments
Dymek, Anna, Pecio, Anna, Piprek, Rafał
openaire   +3 more sources

Ichthyofauna of Udayasamudram Reservoir in Nalgonda District, Telangana

open access: yesJournal of Threatened Taxa, 2017
The present paper discusses about the diversity of fish fauna in Udayasamudram Reservoir in Nalgonda District, Telangana State, India. Surveys were conducted from March 2013 to February 2016, and fish specimens were collected to study the diversity.
Rachamalla Shyamsundar   +2 more
doaj   +1 more source

The fate of the duplicated androgen receptor in fishes: a late neofunctionalization event?

open access: yesBMC Evolutionary Biology, 2008
Background Based on the observation of an increased number of paralogous genes in teleost fishes compared with other vertebrates and on the conserved synteny between duplicated copies, it has been shown that a whole genome duplication (WGD) occurred ...
Haendler Bernard   +7 more
doaj   +1 more source

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