The Infraorbital Canal, Its Lateral-Line Ossicles and Neuromasts, in the Minnows Notropis volucellus and N. buchanani

Copeia ◽  
1966 ◽  
Vol 1966 (3) ◽  
pp. 403 ◽  
Author(s):  
Harley W. Reno
Keyword(s):  
Lateral Line ◽  
Infraorbital Canal ◽  
Notropis Volucellus

Oxynoemacheilus amanos, a new nemacheilid loach from the Orontes River drainage (Teleostei: Nemacheilidae)

Zootaxa ◽  
2021 ◽  
Vol 4938 (5) ◽  
pp. 559-570
Author(s):  
CÜNEYT KAYA ◽  
BARAN YOĞURTÇUOĞLU ◽  
JÖRG FREYHOF
Keyword(s):  
New Species ◽  
Mediterranean Sea ◽  
Lateral Line ◽  
Eastern Mediterranean ◽  
The Other ◽  
Caudal Fin ◽  
Eastern Mediterranean Sea ◽  
River Drainage ◽  
Dorsal Fin ◽  
Infraorbital Canal

Oxynoemacheilus amanos, new species, is described from İncesu spring in the upper Hupnik drainage, a northern tributary of the lower Orontes in Turkey. It is distinguished from the other Oxynoemacheilus species in the Eastern Mediterranean Sea basin by possession of an incomplete lateral line with 23–45 pores, terminating between the vertical through the dorsal fin origin and the anus, 10–13 pores in the infraorbital canal, a deeply emarginate caudal fin, no suborbital groove in the male, and a series of irregularly shaped and set dark-brown bars on the flank, not connected to saddles on the back.  

scholarly journals Description of the mechanoreceptive lateral line and electroreceptive ampullary systems in the freshwater whipray, Himantura dalyensis

2011 ◽  
Vol 62 (6) ◽  
pp. 771 ◽  
Author(s):  
Teagan A. Marzullo ◽  
Barbara E. Wueringer ◽  
Lyle Squire Jnr ◽  
Shaun P. Collin
Keyword(s):  
Lateral Line ◽  
Related Species ◽  
Sensory Systems ◽  
Low Salinity ◽  
Dasyatis Sabina ◽  
Estuarine Species ◽  
Ampullae Of Lorenzini ◽  
Infraorbital Canal ◽  
Elasmobranch Species ◽  
Elasmobranch Fishes

Mechanoreceptive and electroreceptive anatomical specialisations in freshwater elasmobranch fishes are largely unknown. The freshwater whipray, Himantura dalyensis, is one of a few Australian elasmobranch species that occur in low salinity (oligohaline) environments. The distribution and morphology of the mechanoreceptive lateral line and the electroreceptive ampullae of Lorenzini were investigated by dissection and compared with previous studies on related species. The distribution of the pit organs resembles that of a marine ray, Dasyatis sabina, although their orientation differs. The lateral line canals of H. dalyensis are distributed similarly compared with two marine relatives, H. gerrardi and D. sabina. However, convolutions of the ventral canals and proliferations of the infraorbital canal are more extensive in H. dalyensis than H. gerrardi. The intricate nature of the ventral, non-pored canals suggests a mechanotactile function, as previously demonstrated in D. sabina. The ampullary system of H. dalyensis is not typical of an obligate freshwater elasmobranch (i.e. H. signifer), and its morphology and pore distribution resembles those of marine dasyatids. These results suggest that H. dalyensis is euryhaline, with sensory systems adapted similarly to those described in marine and estuarine species.

scholarly journals Hydrolagus mccoskeri sp. nov., a new species of chimaeroid fish from the Galápagos Islands (Holocephali: Chimaeriformes: Chimaeridae)

Zootaxa ◽  
2006 ◽  
Vol 1328 (1) ◽  
pp. 27 ◽  
Author(s):  
LEWIS A.K. BARNETT ◽  
DOMINIQUE A. DIDIER ◽  
DOUGLAS J. LONG ◽  
DAVID A. EBERT
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Color Pattern ◽  
Equatorial Pacific ◽  
Galápagos Islands ◽  
Eastern Equatorial Pacific ◽  
Infraorbital Canal ◽  
The Family ◽  
Small Head ◽  
A New Species

A new species of chimaeroid, Hyd rolagus mccosker i sp. nov., is described from the Galápag os Islands. This species represents the second member of the family Chimaeridae known from the eastern equatorial Pacific. It can b e distinguis hed from its congeners by a combination of the following characters: small head with short, blunt snout; preopercu lar and oral lateral line canals branching from the same node off the infraorbital canal and sharing a short common b ranch; dorsum medium brown with numerous narrow, shar ply delineated circular and elongate white blotches; ventrum white to tan with extremely fine brown mottl ing. The species is compared to Hyd rolagus n ovaezealandiae and Hyd rolagus colliei , the most similar congeners in color pattern and morphology.

Interaction of sound pressure and particle acceleration in the excitation of the lateral-line neuromasts of sprats

1984 ◽  
Vol 220 (1220) ◽  
pp. 299-325 ◽  
Keyword(s):  
Lateral Line ◽  
Sound Pressure ◽  
Sound Field ◽  
Quantitative Information ◽  
Rate Of Change ◽  
Source Surface ◽  
Pressure Sensitive ◽  
Infraorbital Canal ◽  
Pressure Changes ◽  
Relative Excitation

In clupeids a pressure-sensitive inner ear is hydrodynamically connected to the lateral-line and both sound pressures and particle accelerations stimulate the receptors of the lateral-line neuromasts. Experiments on sprats were done using transients to confirm and extend quantitative information about these stimuli and their interaction with each other. Recordings from nerves from neuromasts were made and stimuli needed to evoke constant responses compared. It was shown that there were responses to both directions of water velocity inside the canal; that the most sensitive range of frequency of the receptors with respect to the velocity of water in the canal was between 20 and 100 Hz; that the ratio between the sensitivity to outside pressure changes and the sensitivity to acceleration in the outside medium was approximately as predicted by earlier mechanical observations; that the change of these sensitivity ratios at different positions in the infraorbital canal was as predicted and that the responses to simultaneous pressure and acceleration transients were synchronous. The velocities expected at each neuromast in the infraorbital canal of a sprat have been calculated for various positions of a fish around a vibrating source with characteristics approximating to the tail of another sprat. Significant changes in the relative excitation of different neuromasts, as a result of the mixing of pressure-induced and acceleration-induced velocities, occur in two situations: these are changes of distance and changes of the rate of change of the acceleration of the source surface. Possible biological advantages, including the ranging of sources, of mixing inputs from the pressure and acceleration components of a sound field are discussed.

A Study on the Fine Structure of the Lateral Line Organ of the Sea Eel

1973 ◽  
Vol 31 ◽  
pp. 648-649
Author(s):  
K. Hama
Keyword(s):  
Fine Structure ◽  
Electron Microscope ◽  
Lateral Line ◽  
Low Frequency ◽  
Sensory Cells ◽  
Apical Surface ◽  
Voltage Electron ◽  
Sensory Epithelia ◽  
Low Frequency Vibration ◽  
Transmission Electron

The lateral line organs of the sea eel consist of canal and pit organs which are different in function. The former is a low frequency vibration detector whereas the latter functions as an ion receptor as well as a mechano receptor.The fine structure of the sensory epithelia of both organs were studied by means of ordinary transmission electron microscope, high voltage electron microscope and of surface scanning electron microscope.The sensory cells of the canal organ are polarized in front-caudal direction and those of the pit organ are polarized in dorso-ventral direction. The sensory epithelia of both organs have thinner surface coats compared to the surrounding ordinary epithelial cells, which have very thick fuzzy coatings on the apical surface.

Scanning Electron Microscopy of Fish Scales as an Adjunctive Aid in Speciation

1972 ◽  
Vol 30 ◽  
pp. 394-395
Author(s):  
Edward D. DeLamater ◽  
Walter R. Courtenay ◽  
Cecil Whitaker
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Lateral Line ◽  
Species Differences ◽  
Fish Scale ◽  
Fish Scales ◽  
Anterior Border ◽  
The University ◽  
Multiple Holes ◽  
Scanning Electron

Comparative scanning electron microscopy studies of fish scales of different orders, families, genera and species within genera have demonstrated differences which warrant elaboration. These differences in detail appear to be sufficient to act as “fingerprints”, at least, for family differences. To date, the lateral line scales have been primarily studied. These demonstrate differences in the lateral line canals; the pattern of ridging with or without secondary protuberances along the edges; the pattern of spines or their absence on the anterior border of the scales; the presence or absence of single or multiple holes on the ventral and dorsal sides of the lateral line canal covers. The distances between the ridges in the pattern appear likewise to be important.A statement of fish scale structure and a comparison of family and species differences will be presented.The authors wish to thank Dr. Donald Marzalek and Mr. Wallace Charm of the Marine and Atmospheric Laboratory of the University of Miami and Dr. Sheldon Moll and Dr. Richard Turnage of AMR for their exhaustive help in these preliminary studies.

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