Ascending spinal systems in the fish,Prionotus carolinus

Finger, Thomas E.

doi:10.1002/(sici)1096-9861(20000619)422:1<106::aid-cne7>3.0.co;2-t

Cited by 47 publications

(59 citation statements)

References 46 publications

(76 reference statements)

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“…It is possible that the relatively small amount of afferent information from teleost fins is handled exclusively by SC segments in register with, or adjacent to, the fins, and for this reason no structure homologous to the Clarke's column has been reported in teleosts. The distribution of SC nuclei is indeed plastic in vertebrates and new spinal nuclei/columns are formed when sensory input from peripheral receptors increases after the emergence of complex peripheral structures, or novel sensory capabilities, as indicated by the development of specific SC nuclei/columns associated with the evolution of chemosensation in the pectoral fins of the teleost northern sea robin (Prionotus carolinus) (Finger, 2000). In summary, the absence of an raldh2 intron 1G enhancer and of raldh2 expression throughout most of the SC in zebrafish and medaka are consistent with the loss of cis and trans factor components of regulatory networks associated with the simplification of teleost fins (Hildebrand and Goslow, 1998;Shapiro et al, 2004;Tanaka et al, 2005).…”

Section: Research Articlementioning

confidence: 99%

Insights into the organization of dorsal spinal cord pathways from an evolutionarily conserved raldh2 intronic enhancer

Castillo¹,

Cravo²,

Azambujá³

et al. 2010

Development

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SUMMARYComparative studies of the tetrapod raldh2 (aldh1a2) gene, which encodes a retinoic acid (RA) synthesis enzyme, have led to the identification of a dorsal spinal cord enhancer. Enhancer activity is directed dorsally to the roof plate and dorsal-most (dI1) interneurons through predicted Tcf-and Cdx-homeodomain binding sites and is repressed ventrally via predicted Tgif homeobox and ventral Lim-homeodomain binding sites. Raldh2 and Math1/Cath1 expression in mouse and chicken highlights a novel, transient, endogenous Raldh2 expression domain in dI1 interneurons, which give rise to ascending circuits and intraspinal commissural interneurons, suggesting roles for RA in the ontogeny of spinocerebellar and intraspinal proprioceptive circuits. Consistent with expression of raldh2 in the dorsal interneurons of tetrapods, we also found that raldh2 is expressed in dorsal interneurons throughout the agnathan spinal cord, suggesting ancestral roles for RA signaling in the ontogenesis of intraspinal proprioception.

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Section: Research Articlementioning

confidence: 99%

Insights into the organization of dorsal spinal cord pathways from an evolutionarily conserved raldh2 intronic enhancer

Castillo¹,

Cravo²,

Azambujá³

et al. 2010

Development

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“…In addition, we followed the term of Goldstein (1905) for the nucleus ruber and Finger (2000) for the lateral funicular nucleus. Other literature terminology is introduced where necessary.…”

Section: Nomenclaturementioning

confidence: 99%

“…However, in teleosts inputs to the inferior olive remain largely unknown except for the afferents from the principal trigeminal nucleus (Xue et al, 2006a,b), lateral funicular nucleus (Finger, 2000), and periventricular pretectal nucleus (Xue et al, 2007), and further studies are necessary. Although the mammalian inferior olive is known to receive projections from the cerebellar nuclei (Ruigrok and Voogd, 1990), cerebello-olivary projections have not been reported in previous studies of teleost (Finger, 1978a;Meek et al, 1986a,b;Wullimann and Northcutt, 1988;Ito and Yoshi-moto, 1990).…”

mentioning

confidence: 99%

Afferent sources to the inferior olive and distribution of the olivocerebellar climbing fibers in cyprinids

Xue¹,

Yang²,

Yamamoto³

2008

J of Comparative Neurology

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The inferior olive in teleosts is a major afferent origin to the cerebellum. However, inputs to the inferior olive remain largely unknown. The present study examined fiber connections of the inferior olive by tract-tracing methods in cyprinids. After tracer injections into the inferior olive, labeled somata were observed bilaterally in the pretectum, nucleus ruber, principal sensory trigeminal nucleus, descending trigeminal nucleus, inferior reticular formation, and cerebellar valvula. Principal sensory trigeminal and valvular afferents exhibited a clear contralateral preponderance, while afferents from the nucleus ruber were predominantly ipsilateral. Labeled somata were also seen ipsilaterally in the descending octaval nucleus, and contralaterally in the optic tectum, lateral funicular nucleus, cerebellar corpus, and inferior olive. A few somata were labeled in the inferior raphe. Climbing fibers terminated contralaterally in the ganglionic and molecular layers of the cerebellum, showing peculiar glomerular appearances. Labeled climbing fiber terminals were mainly distributed in the ventral region of cerebellar corpus, the medioventral region of lateral lobe of rostral cerebellar valvula, and the lateroventral region of medial lobe of cerebellar valvula in the present injection materials. Fiber connections of the inferior olive in teleosts thus appear quite similar to those in mammals.

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“…These include spinothalamic, spinomesencephalic, spinoreticular and spinolimbic tracts (Willis and Westlund, 1997;Chapman and Nakamura, 1999). Depending on the species, one or more of these spinal tracts have been identified in fish (Ebbesson and Hodde, 1981;Murakami and Ito, 1985;Ronan and Northcutt, 1990;Finger, 2000). Although mammals exhibit more recently evolved spinal tracts that carry nociceptive signals to the brain (i.e.…”

Section: Central Integration Of Nociceptive Signals: Spinal Pathwaysmentioning

confidence: 99%

Can fish suffer?: perspectives on sentience, pain, fear and stress

Chandroo

Duncan

Moccia

2004

Applied Animal Behaviour Science

338

170

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In contrast to other major forms of livestock agriculture, there is a paucity of scientific information on the welfare of fish raised under intensive aquacultural conditions. This reflects an adherence to the belief that these animals have not evolved the salient biological characteristics that are hypothesised to permit sentience. In this review, we evaluate the scientific evidence for the existence of sentience in fish, and in particular, their ability to experience pain, fear and psychological stress. Teleost fish are considered to have marked differences in some aspects of brain structure and organization as compared to tetrapods, yet they simultaneously demonstrate functional similarities and a level of cognitive development suggestive of sentience. Anatomical, pharmacological and behavioural data suggest that affective states of pain, fear and stress are likely to be experienced by fish in similar ways as in tetrapods. This implies that fish have the capacity to suffer, and that welfare consideration for farmed fish should take these states into account. We suggest that the concept of animal welfare can be applied legitimately to fish. It is therefore appropriate to recognize and study the welfare of farmed fish.

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Ascending spinal systems in the fish,Prionotus carolinus

Cited by 47 publications

References 46 publications

Insights into the organization of dorsal spinal cord pathways from an evolutionarily conserved raldh2 intronic enhancer

Insights into the organization of dorsal spinal cord pathways from an evolutionarily conserved raldh2 intronic enhancer

Afferent sources to the inferior olive and distribution of the olivocerebellar climbing fibers in cyprinids

Can fish suffer?: perspectives on sentience, pain, fear and stress

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