Search results for "Characidae"

showing 6 items of 6 documents

Morphological Differences in Neuromasts of the Blind Cave Fish <i>Astyanax hubbsi </i>and the Sighted River Fish <i>Astyanax mexica…

1990

Vital staining and scanning electron microscopy were used to study the morphology of superficial neuromasts in the blind cave fish, Astyanax hubbsi, and its sighted congener, <i&

Astyanax hubbsigeographygeography.geographical_feature_categoryZoologyCavefishAnatomyBiologybiology.organism_classificationhumanitiesbody regionsCharacidaeBehavioral NeuroscienceDevelopmental NeuroscienceCaveFish <Actinopterygii>Brain, Behavior and Evolution
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Discrimination between stationary objects by the blind cave fishAnoptichthys jordani (Characidae)

1981

Blind Mexican cave fish were trained to discriminate between grids of vertical bars placed at various distances from each other. Discrimination was possible only if the freely swimming fish was allowed to glide past the grids in close proximity.

FisheryCharacidaeBehavioral NeuroscienceGeographygeography.geographical_feature_categoryCavebiologyPhysiologyEcologyFish <Actinopterygii>Animal Science and Zoologybiology.organism_classificationEcology Evolution Behavior and SystematicsJournal of comparative physiology
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Collision with and avoidance of obstacles by blind cave fish Anoptichthys jordani (Characidae).

1985

Blind Mexican cave fish (Anoptichthys jordani) were released into unknown surroundings and their swimming tracks were recorded. During the first 24 h in a new tank, i.e., in unfamiliar environments, the average swimming velocity of the fish was higher than during the remaining time in the tank. Collision with obstacles was recorded by an electrical contact detection method. Single frame analysis of video-recordings revealed that collision can be correlated with tail movements when the fish is close to an obstacle, whereas avoidance correlates with gliding during approach to an obstacle. These behavior patterns are discussed in the context of the flow field hypothesis and inhibition of the l…

PhysiologyContext (language use)Motor ActivitySingle frameBehavioral NeuroscienceCavePressureAnimalsEcology Evolution Behavior and Systematicsgeographygeography.geographical_feature_categorybiologyFishesSense OrgansAnatomybiology.organism_classificationGeodesyCollisionFlow fieldBiomechanical PhenomenaCharacidaeObstacleSpace PerceptionExploratory BehaviorFish <Actinopterygii>Animal Science and ZoologyMechanoreceptorsGeologyJournal of comparative physiology. A, Sensory, neural, and behavioral physiology
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The Forebrain of the Blind Cave Fish &lt;i&gt;Astyanax hubbsi &lt;/i&gt;(Characidae)

1997

This paper presents a survey of the cell groups in the telencephalon of the teleost Astyanax hubbsi, based on series of transverse sections stained with the Nissl-Kluver-Barrera and Bodian procedures. The work was conducted for two reasons. Firstly, it was intended to determine the contribution of the forebrain of blind cave fish to certain forms of behavior. An understanding of the anatomy of the telencephalic organization is essential for such a neuroethological approach. The second purpose was to provide the cytoarchitectural basis for the experimental analysis of the fiber connectivity of the telencephalon of A. hubbsi. Furthermore, information about the forebrain of characids is widely…

biologyCerebrumAnterior commissureAnatomyCommissurebiology.organism_classificationOlfactory bulbCharacidaeBehavioral NeuroscienceProsencephalonmedicine.anatomical_structureDevelopmental NeuroscienceForebrainmedicineOptic nerveBrain, Behavior and Evolution
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The Forebrain of the Blind Cave Fish &lt;i&gt;Astyanax hubbsi &lt;/i&gt;(Characidae)

1997

This paper presents a survey of the cell groups in the telencephalon of the teleost Astyanax hubbsi, based on series of transverse sections stained with the Nissl-, Kluver-Barrera and Bodian procedure

geographyAstyanax hubbsigeography.geographical_feature_categorybiologyAnatomybiology.organism_classificationCharacidaeBehavioral Neurosciencesymbols.namesakeDevelopmental NeuroscienceCaveForebrainNissl bodysymbolsFish <Actinopterygii>Brain, Behavior and Evolution
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Detection of stationary objects by the blind Cave FishAnoptichthys jordani (Characidae)

1981

It was noticed that the blind Mexican Cave Fish repeatedly passes along objects new to it at a short distance. Observations and experiments are reported which support the hypothesis that water movements occurring between the stationary object and the fish as it passes by convey information about the location and possibly the shape of the object, which is detected by the lateral line organ of the fish. Water movements of the expected type were recorded with the help of a model fish equipped with a mechano-electric analogue of a free neuromast.

geographyCommunicationgeography.geographical_feature_categorybiologyPhysiologybusiness.industryWater Movementsbiology.organism_classificationShort distanceCharacidaeBehavioral NeurosciencePaleontologyCaveFish <Actinopterygii>Stationary objectAnimal Science and ZoologybusinessEcology Evolution Behavior and SystematicsGeologyJournal of comparative physiology
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