Phylogeny of Putative Cholinergic Visual Pathways through the Pretectum to the Hypothalamus in Teleost Fish

Wullimann, Mario F.; Meyer, Dietrich

doi:10.1159/000115294

Cited by 56 publications

(112 citation statements)

References 16 publications

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“…Organization of the pretectum of ostariophysan teleosts is quite different from that of percomorph teleosts [Wullimann and Meyer, 1990;Butler et al, 1991]. The cyprinid pretectum lacks the nucleus corticalis, nucleus intermedius of Brickner [1929] and so on, which are present in percomorph pretectum [Ito et al, 1982;Murakami et al, 1986].…”

Section: Possible Homologue Of the Nucleus Pretectalis In Carpmentioning

confidence: 94%

Fiber Connections of the Nucleus isthmi in the Carp (Cyprinus carpio) and Tilapia (Oreochromis niloticus)

Xue

Yamamoto²,

Yoshimoto³

et al. 2001

Brain Behav Evol

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The nucleus pretectalis (NP) is a prominent nucleus in the percomorph pretectum and has been shown to project to the nucleus isthmi in the filefish by an HRP tract-tracing method [Ito et al., 1981], but a homologous nucleus to the NP is apparently lacking in ostariophysans. The present study examined fiber connections of the nucleus isthmi in an ostariophysan teleost, the carp (Cyprinidae, Cyprinus carpio), to identify a nucleus homologous to the percomorph nucleus pretectalis. Identical studies in a percomorph tilapia (Cichlidae, Oreochromis niloticus) were also performed. Injections of biotinylated dextran amine (BDA) or biocytin to the carp nucleus isthmi labeled cells in the ipsilateral optic tectum and nucleus ruber of Goldstein [1905]. Labeled tectal neurons were located in the stratum periventriculare (SPV) and the stratum fibrosum et griseum superficiale (SFGS). The somata in the SPV were pyriform and those in the SFGS were fusiform. No labeled cells were found in the pretectum. Labeled terminals were seen in the ipsilateral nucleus pretectalis superficialis pars parvocellularis (PSp), optic tectum, and bilateral nucleus ruber. Terminals in the nucleus ruber appear to come from tectal neurons in the SFGS labeled by isthmic injections. Thus the nucleus isthmi has reciprocal fiber connections with the ipsilateral optic tectum, receives projections from the ipsilateral nucleus ruber, and projects to the ipsilateral PSp. The nucleus pretectalis homologue is apparently absent in the carp. Studies in tilapia showed that the nucleus isthmi receives bilateral projections from the NP and optic tectum. In addition, the present study revealed a previously unknown afferent from the nucleus ruber to the percomorph nucleus isthmi. The tilapia nucleus isthmi projects to the same targets as in the carp. Isthmic projection neurons in the tilapia optic tectum were located in the SPV and pyriform with a similar shape to the carp SPV neurons that project to the nucleus isthmi. No labeled cells were found in the SFGS of tilapia optic tectum. The fusiform neurons in the SFGS of the carp optic tectum possess various hodological similarities with the NP and may correspond to the NP neurons of percomorphs.

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Section: Possible Homologue Of the Nucleus Pretectalis In Carpmentioning

confidence: 94%

Fiber Connections of the Nucleus isthmi in the Carp (Cyprinus carpio) and Tilapia (Oreochromis niloticus)

Xue

Yamamoto²,

Yoshimoto³

et al. 2001

Brain Behav Evol

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“…The neuroanatomical terminology is that of Braford and Northcutt (1983), as modified by Wullimann and Northcutt (1990) and Wullimann and Meyer (1990).…”

Section: Introductionmentioning

confidence: 99%

Possible multiple evolution of indirect telencephalo-cerebellar pathways in teleosts: studies in Carassius auratus and Pantodon buchholzi

Wullimann

Meyer²

1993

Cell Tissue Res

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Abstract. Among vertebrates, telencephalo-pontine systems exist only in birds and mammals. However, three nuclei in the diencephalon and mesencephalon of teleost fishes have been indicated analogous to the pons to represent relay stations between telencephalon and cerebellum. Since two of these nuclei (dorsal preglomerular nucleus, dorsal tegmental nucleus) have only been described in the highly derived, electrosensory mormyrids, we investigated telencephalic connections in two nonelectrosensory teleosts, the goldfish Carassius auratus and the freshwater butterflyfish Pantodon buchholzi, and cerebellar connections only in the latter species, since for C. auratus these connections are already established. Horseradish peroxidase tracing reveals that C. auratus has a dorsal tegmental nucleus and a paracommissural nucleus both of which are telencephalo-recipient and project to the cerebellum, and that P. buchholzi has a dorsal preglomerular nucleus with such connections. These results extend our knowlegde of the distribution and, therefore, the phylogeny of telencephalo-cerebellar systems in teleosts. Similar to tetrapods, teleosts appear to have developed telencephalo-cerebellar systems several times independently.

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“…In all actinopterygian radiations except cladistians, a posterior pretectal nucleus (PPN) has been found close to the superficial pretectal nucleus [Braford and Northcutt, 1983;Wullimann et al, 1991;Butler and Northcutt, 1992;Northcutt and Butler, 1993], and it is thought to be homologous to both the pars intermedius of the superficial pretectal nucleus and nucleus glomerulosus of percomorph euteleosts [Northcutt and Wullimann, 1988;Wullimann and Meyer, 1990;Wullimann et al, 1991]. In non-percomorph teleosts, the size of the posterior pretectal nucleus varies considerably.…”

Section: Synencephalonmentioning

confidence: 99%

“…With the exception of the optic tectum, the remaining nuclei that receive primary retinal projections are located in the diencephalon. The visual system of fishes has been shown to be particulary dynamic with respect to evolutionary changes [Northcutt and Wullimann, 1988;Wullimann and Meyer, 1990;Wullimann et al, 1991].…”

Section: Introductionmentioning

confidence: 99%

The Diencephalon and Pretectum of the White Sturgeon (Acipenser transmontanus): A Cytoarchitectonic Study

Rupp

Northcutt

1998

Brain Behav Evol

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The cytoarchitecture of the diencephalon and pretectum of the white sturgeon, Acipenser transmontanus, was studied utilizing cresyl violet stained serial paraffin sections. The identified cell groups were assigned to the preoptic area, hypothalamus, thalamus and posterior tubercle, epithalamus, synencephalon and pretectum. The outlines of the diencephalic and pretectal nuclei were projected graphically onto a midsagittal section of the brain, thus providing a reconstruction of the relative positions of the major cell groups. This facilitated comparisons with the diencephalic and pretectal nuclei of other ray-finned fishes. Our cytoarchitectural analysis indicates that the diencephalon and pretectum of the white sturgeon is intermediate to that described for cladistians and neopterygians. The preoptic area in Acipenser is relatively conservative compared to other ray-finned fishes but lacks distinct subdivisions in the magnocellular periventricular preoptic nucleus and includes a unique migrated rostral accessory nucleus. The hypothalamic walls are rather thin, and due to the presence of extensive lateral and posterior recesses and the lack of migrated nuclei, they superficially resemble the condition seen in sharks. The dorsal and ventral thalamic nuclei do not exhibit much variation compared to other ray-finned fishes, except for the presence of a small lateral posterior thalamic nucleus, the absence of a distinct ventrolateral thalamic nucleus, and slight differences in the internal organization of the ventromedial thalamic nucleus. The posterior tubercle in Acipenser clearly comprises more migrated cell groups than that of Polypterus, however, these cell groups are considerably less well defined than in neopterygians. As in other nonteleost actinopterygians, the habenular nuclei are highly asymmetrical with the right side larger than the left side. The cytoarchitectonic complexity of the pretectum in Acipenser is intermediate to that observed in Polypterus and neopterygians in that a magnocellular component within the superficial pretectal nucleus is clearly present but cannot be delineated as a distinct magnocellular superficial pretectal nucleus. Also, the posterior pretectal nucleus which is absent in Polypterus but which has been identified as a small nucleus both in Lepisosteus and Amia is represented in Acipenser by a small group of scattered cells.

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Phylogeny of Putative Cholinergic Visual Pathways through the Pretectum to the Hypothalamus in Teleost Fish

Cited by 56 publications

References 16 publications

Fiber Connections of the Nucleus isthmi in the Carp <i>(Cyprinus carpio)</i> and Tilapia <i>(Oreochromis niloticus)</i>

Fiber Connections of the Nucleus isthmi in the Carp <i>(Cyprinus carpio)</i> and Tilapia <i>(Oreochromis niloticus)</i>

Possible multiple evolution of indirect telencephalo-cerebellar pathways in teleosts: studies in Carassius auratus and Pantodon buchholzi

The Diencephalon and Pretectum of the White Sturgeon <i>(Acipenser transmontanus):</i> A Cytoarchitectonic Study

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