Micro- and macro-morphology of the olfactory organ of Syngnathus typhle (Syngnathidae, Actinopterygii)

2020 ◽  
Author(s):  
Jakub Dymek ◽  
Gunilla Rosenqwist ◽  
Michał Kuciel ◽  
Eugenia Rita Lauriano ◽  
Gioele Capillo ◽  
...  
Keyword(s):  
Olfactory Organ ◽  
Syngnathus Typhle

scholarly journals Evolutionary dynamics of the OR gene repertoire in teleost fishes: evidence of an association with changes in olfactory epithelium shape

2021 ◽  
Author(s):  
Maxime Policarpo ◽  
Katherine E Bemis ◽  
James C Tyler ◽  
Cushla J Metcalfe ◽  
Patrick Laurenti ◽  
...  
Keyword(s):  
Olfactory Epithelium ◽  
Evolutionary Dynamics ◽  
Morphological Changes ◽  
Olfactory Organ ◽  
Death Process ◽  
Gene Repertoire ◽  
Teleost Fishes ◽  
Syngnathus Typhle ◽  
Or Gene ◽  
Or Genes

AbstractTeleost fishes perceive their environment through a range of sensory modalities, among which olfaction often plays an important role. Richness of the olfactory repertoire depends on the diversity of receptors coded by homologous genes classified into four families: OR, TAAR, VR1 and VR2. Herein, we focus on the OR gene repertoire. While independent large contractions of the OR gene repertoire associated with ecological transitions have been found in mammals, little is known about the diversity of the OR gene repertoire and its evolution within teleost fishes, a group that includes more than 34,000 living species. We analyzed genomes of 163 species representing diversity in this large group. We found a large range of variation in the number of functional OR genes, from 15 in Syngnathus typhle and Mola mola, to 429 in Mastacembelus armatus. The number of OR genes was higher in species with an extensively folded olfactory epithelium, that is, for example, when a multi-lamellar rosette was present in the olfactory organ. Moreover, the number of lamellae was correlated with the richness of the OR gene repertoire. While a slow and balanced birth-and-death process generally drives evolution of the OR gene repertoire, we inferred several episodes of high rates of gene loss, sometimes followed by large gains in the number of OR genes. These gains coincide with morphological changes of the olfactory organ and suggest a strong functional association between changes in the morphology and the evolution of the OR gene repertoire.

Volatile compound secretion coincides with modifications of the olfactory organ in mantellid frogs

2017 ◽  
Vol 303 (1) ◽  
pp. 72-81 ◽  
Author(s):  
C. Nowack ◽  
P. S. Peram ◽  
S. Wenzel ◽  
A. Rakotoarison ◽  
F. Glaw ◽  
...  
Keyword(s):  
Volatile Compound ◽  
Olfactory Organ

scholarly journals The mechanism of olfactory organ ventilation in Periophthalmus barbarus (Gobiidae, Oxudercinae)

Zoomorphology ◽  
2012 ◽  
Vol 132 (1) ◽  
pp. 81-85 ◽  
Author(s):  
Michał Kuciel
Keyword(s):  
Olfactory Organ

scholarly journals VI. On the comparative structure of the brain in rodents

1882 ◽  
Vol 33 (216-219) ◽  
pp. 15-21
Keyword(s):  
Olfactory Organ ◽  
Cortical Surface ◽  
Complex Relationship ◽  
Comparative Structure ◽  
The Subject ◽  
The Brain

I have endeavoured in this abstract to summarise the results of my recent researches into the minute structure of the brain in the smaller Rodents. The pig and sheep, which were the subjects of my former memoir, possess a highly developed olfactory apparatus conjoined to a well convoluted cortical surface; but in the smaller animals now under consideration the surface of the hemispheres is almost perfectly smooth, while the olfactory organ, from its comparative size and complex relationship, has an important part to play in the architecture of the brain. Animals possessing the latter type of cerebrum have been classed together as the Osmatic Lissencéphales, in contradistinction to those which were the subject of my former enquiries, the Osmatic Gyren-céphales. My researches into the structure of the brain of prominent members of the former group, viz., the rabbit and rat, may be considered under two heads:— ( a .) The histology of the complete cortical envelope.

scholarly journals The olfactory organ is activated by a repelling pheromone in the red‐spotted newtNotophthalmus viridescens

2002 ◽  
Vol 6 (3) ◽  
pp. 233-237 ◽  
Author(s):  
Daesik Park ◽  
Catherine R. Propper
Keyword(s):  
Olfactory Organ

Anterior olfactory organ removal produces anxiety-like behavior and increases spontaneous neuronal firing rate in basal amygdala

2013 ◽  
Vol 252 ◽  
pp. 101-109 ◽  
Author(s):  
Carlos M. Contreras ◽  
Ana G. Gutiérrez-García ◽  
Tania Molina-Jiménez
Keyword(s):  
Firing Rate ◽  
Neuronal Firing ◽  
Olfactory Organ ◽  
Basal Amygdala ◽  
Organ Removal ◽  
Neuronal Firing Rate

scholarly journals Histomorphological study of olfactory organ in rock dove, Columba livia Gmelin, 1789

2021 ◽  
Vol 1879 (2) ◽  
pp. 022028
Author(s):  
Hussain A. M. Dauod ◽  
Ahmad A. Hussain ◽  
May F. Al-Habib
Keyword(s):  
Columba Livia ◽  
Olfactory Organ

Taste by Touch: Some Experiments with Octopus

1963 ◽  
Vol 40 (1) ◽  
pp. 187-193
Author(s):  
M. J. WELLS
Keyword(s):  
Hydrochloric Acid ◽  
Fresh Water ◽  
Sea Water ◽  
Olfactory Organ ◽  
Distilled Water ◽  
Quinine Sulphate ◽  
Human Tongue ◽  
Half Strength

1. A method of teaching Octopus chemotactile discriminations is described. 2. The animals can be shown to be capable of distinguishing by touch between porous objects soaked in plain sea water and sea water with hydrochloric acid, sucrose or quinine sulphate added. 3. They can detect these substances in concentrations at least 100 times as dilute as the human tongue is capable of detecting them in distilled water. 4. They can be trained to distinguish between equimolar (0.2 mM) solutions of hydrochloric acid, sucrose and quinine. 5. They can also be trained to distinguish between sea water and fresh water or half-strength sea water or sea water with twice the usual quantity of salt. 6. The function of the ‘olfactory organ’ is discussed. 7. Chemotactile learning is discussed in relation to the means by which Octopus finds its way about the territory around its ‘home’

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