Quantitative study of primary sensory neurone populations of three species of elasmobranch fish

@article{Snow1993QuantitativeSO,
  title={Quantitative study of primary sensory neurone populations of three species of elasmobranch fish},
  author={Peter J. Snow and Mark B. Plenderleith and Layne L. Wright},
  journal={Journal of Comparative Neurology},
  year={1993},
  volume={334}
}
In order to assess the ability of sharks and rays to sense pain, the proportion of myelinated versus unmyelinated sensory fibres in the dorsal roots and the diameter spectrum of cells in the dorsal root ganglia of three species of elasmobranch fish were ascertained. Electron micrographs were used to count the numbers of myelinated and unmyelinated fibres in montages of whole dorsal roots of the long‐tailed stingray (Himantura sp.), the shovelnose ray (Rhinobatus battilum), and small specimens… Expand
Sexual Dimorphism of the Electrosensory System: A Quantitative Analysis of Nerve Axons in the Dorsal Anterior Lateral Line Nerve of the Blue-Spotted Fantail Stingray (Taeniura lymma)
TLDR
Detailed morphological data are presented to allow a complete interpretation of the functional significance of the sexual dimorphism found in the ALLN, which may result in improved sensitivity of the electrosensory system and may facilitate mate identification for reproduction. Expand
Anatomical and electrophysiological analysis of the trigeminal nerve in a teleost fish, Oncorhynchus mykiss
  • L. Sneddon
  • Medicine, Biology
  • Neuroscience Letters
  • 2002
TLDR
The trigeminal nerve in the rainbow trout, Oncorhynchus mykiss, was examined for the presence of A-delta and C fibres and electrophysiological recordings of evoked activity from the ganglion confirmed the presence, as well as the potential for nociceptive capability in a lower vertebrate. Expand
Central Projections of Primary Sensory Afferents to the Spinal Dorsal Horn in the Long-Tailed Stingray, Himantura fai
TLDR
The central projections of primary sensory afferents innervating the caudal region of the pectoral fin of the long-tailed stingray were labeled by applying the lipophilic carbocyanine dye DiI to the dorsal roots in fixed tissue to reveal a variety of synaptic morphologies including large presynaptic elements making synaptic contacts with multiple processes in a glomerular arrangement. Expand
Localization of enkephalin immunoreactivity in the spinal cord of the long‐tailed ray Himantura fai
TLDR
Enkephalin‐like immunoreactivity (ENK‐LI) was found throughout the spinal cord of the long‐tailed ray Himantura fai and one‐third of all enkephalineergic cells were found throughout laminae A and B, while two‐thirds were located in the medial half of C, D, and E. Expand
Mechanoreceptive and nociceptive responses in the central nervous system of goldfish (Carassius auratus) and trout (Oncorhynchus mykiss).
  • R. Dunlop, P. Laming
  • Biology, Medicine
  • The journal of pain : official journal of the American Pain Society
  • 2005
TLDR
It is shown that there is neuronal activity in all brain areas including the telencephalon, suggesting a nociceptive pathway from the periphery to the higher central nervous system of fish. Expand
Do fishes have nociceptors? Evidence for the evolution of a vertebrate sensory system
TLDR
This study provides significant evidence of nociception in teleost fishes and demonstrates that behaviour and physiology are affected over a prolonged period of time, suggesting discomfort. Expand
Mechanothermal nociceptors in the scaly skin of the chicken leg
TLDR
Comparison of the physiological properties of the C fibres in the legs with those previously identified in the beak showed that those in the leg had significantly lower thermal thresholds, but higher mechanical thresholds, and the possible functional significance of these differences is discussed. Expand
Use of Hydrobionts as Alternative Biological Models
We present here results from model experiments with poikilotherm hydrobionts belonging to different taxonomic groups: crayfish (Pontatacus leptodactylus), fish, i.e., carp (Cyprinus carpio), andExpand
The ecology and biology of stingays (Dasyatidae) at Ningaloo Reef, Western Australia
TLDR
Assessment of the biological and ecological characteristics of tropical stingrays at Ningaloo Reef, Western Australia found that five broad taxonomic prey categories were common to all species of ray; however, H. uarnak is shown to be a crustacean specialist while the remaining four species showed high levels of overlap within their diets. Expand
Spinal reflexes in the long-tailed stingray, Himantura fai
TLDR
The exploitation of the segregation of motor and sensory axons into peripheral nerve sub-compartments to examine spinal reflex interactions in anaesthetized stingrays suggests that circuitry subserving trans-segmental interactions between spinal afferents is present in stingrays and that interneuronal connections attenuate the influence that subsequent activity in caudal primary afferentS can have on the motor elements. Expand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 19 REFERENCES
Organization of peripheral nerves and spinal roots of the Atlantic stingray, Dasyatis sabina.
TLDR
The stingray is remarkable in having very few unmyelinated axons in the dorsal roots, ventral roots, or peripheral nerves, which distinguishes the Atlantic stingrays from all other vertebrates whose roots and nerves have been examined for un myelinated fibers. Expand
Monoclonal antibody 2C5: A marker for a subpopulation of small neurones in rat dorsal root ganglia
TLDR
It is suggested that the size distributions of 2C5-positive dorsal root ganglion neurones and the pattern of2C5 immunoreactivity within the spinal cord indicate that the labelled cells may be neurones with peripheral C fibers. Expand
Immunohistochemical studies on the distribution and origin of candidate peptidergic primary afferent neurotransmitters in the spinal cord of an elasmobranch fish, the atlantic stingray (Dasyatis sabina)
TLDR
All four peptides are present in the stingray spinal cord, although only SP appears to be a candidate primary afferent transmitter. Expand
The plant lectin soybean agglutinin binds to the soma, axon and central terminals of a subpopulation of small-diameter primary sensory neurons in the rat and cat
TLDR
Results show the plant lectin soybean agglutinin to be a histochemical marker for the soma and central terminals of a subpopulation of small-diameter sensory neurons in both the rat and cat. Expand
A monoclonal antibody against neurofilament protein specifically labels a subpopulation of rat sensory neurones
TLDR
A monoclonal antibody against neurofilament protein specifically and exclusively labelled n subpopulation of rat dorsal root ganglion (DRG) neurons to be used as a much needed specific label for the large light population of neurons in rat DRGs. Expand
A documentation of an age related increase in neuronal and axonal numbers in the stingray, Dasyatis sabina, leseuer
TLDR
It is hypothesized that this steady increase in axonal numbers in the stingray Dasyatis sabina may be related to the ability of fish to regenerate parts of their central and/or peripheral nervous systems. Expand
Development of mouse dorsal root ganglia: an autoradiographic and quantitative study
TLDR
Pulse labelling with tritiated thymidine was used to determine the cell birthdays of dorsal root ganglion (DRG) neurons in foetal mice, and evidence for the existence of more than one neuronal cell type is presented. Expand
The number of neurons in dorsal root ganglia L4–L6 of the rat
The number of neurons in the dorsal root ganglia L4–L6 of the rat was determined because published data are inconsistent and in general incompatible with the number of afferent axons in the sciaticExpand
THE GEOMETRY OF PERIPHERAL MYELIN SHEATHS DURING THEIR FORMATION AND GROWTH IN RAT SCIATIC NERVES
  • H. Webster
  • Biology, Medicine
  • The Journal of cell biology
  • 1971
TLDR
In rat sciatic nerves, a small bundle of fibers was identified in which myelin sheaths were absent at birth, appeared within 3 days, and grew rapidly for 2 wk, and the myelin membrane's transverse length and area increased exponentially with time. Expand
Soybean agglutinin binds to a subpopulation of primary sensory neurones in the cat
TLDR
Findings suggest that SBA may be a useful ultrastructural marker for C-fibre terminals in the rat. Expand
...
1
2
...