Topographical Organization of an Indirect Telencephalo-Cerebellar Pathway through the Nucleus paracommissuralis in a Teleost, &lt;i&gt;Oreochromis niloticus&lt;/i&gt;

Imura, Kosuke; Yamamoto, Naoyuki; Sawai, Nobuhiko; Yoshimoto, Masami; Yang, Chun-Ying; Xue, Hao; Ito, Hironobu

doi:10.1159/000069353

Cited by 45 publications

(80 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The holocentrid CC receives additional afferents from the torus longitudinalis and nucleus subvalvularis present study], which were not found in previous CC injection studies of other teleosts. Our results show that the CC receives massive projections from the NPC and NLV as has been reported previously in other teleosts [Wullimann and Northcutt, 1988;Imura et al, 2003]. However, projection patterns of the NPC and NLV to the CCd and CCv are rather different.…”

Section: Discussionsupporting

confidence: 88%

See 1 more Smart Citation

Afferent Connections of the Corpus cerebelli in Holocentrid Teleosts

Xue

Yamamoto²,

Yang³

et al. 2004

Brain Behav Evol

Self Cite

View full text Add to dashboard Cite

The holocentrid corpus cerebelli (CC) is composed of the dorsal (CCd) and ventral (CCv) lobes. In the present study, afferent connections of the CCd and CCv in holocentrid teleosts (Sargocentron rubrum and S. diadema) were examined by means of tract-tracing methods. Tracer injections into either lobe of the CC labeled neurons in the ipsilateral area pretectalis pars anterior et posterior, nucleus paracommissuralis (NPC), nucleus accessorius opticus and nucleus tegmentocerebellaris. Labeled neurons were also present in the bilateral nucleus lateralis valvulae (NLV), nucleus raphes, nucleus reticularis lateralis and inferior reticular formation, and in the contralateral inferior olive. Injections into the CCd labeled only a few neurons in the area pretectalis pars anterior et posterior, nucleus accessorius opticus and nucleus tegmentocerebellaris, whereas many labeled cells were seen in these nuclei after CCv injections. Injections into the CCv also revealed afferent connections that were not observed after CCd injections. The CCv injections labeled additional neurons in the ipsilateral torus longitudinalis and nucleus subeminentialis and in the bilateral nucleus subvalvularis and nucleus of the commissure of Wallenberg. These differences in afferent connections suggest functional differences between the CCd and CCv. After injections into the CCd, labeled neurons in the NPC were restricted to a medial portion of the nucleus. On the other hand, after injections into the CCv, labeled neurons were found throughout the NPC. Labeled neurons in the NLV were mainly located in its rostral portion following CCd injections, whereas labeled neurons were mainly distributed in the medial portion following CCv injections. These observations suggest topographical organizations of the NPC-CC and NLV-CC projections.

show abstract

Section: Discussionsupporting

confidence: 88%

“…The NPC is known as a relay nucleus of an indirect telencephalo-cerebellar pathway in acanthopterygian teleosts [Ito et al, 1982;Imura et al, 2003;Xue et al, 2003]. The nucleus receives descending visual projections from the telencephalon and project to the CC [Ito et al, 1982;Xue et al, 2003].…”

Section: Afferents From the Diencephalonmentioning

confidence: 99%

Afferent Connections of the Corpus cerebelli in Holocentrid Teleosts

Xue

Yamamoto²,

Yang³

et al. 2004

Brain Behav Evol

Self Cite

View full text Add to dashboard Cite

show abstract

“…For the most part, our Dc groups are similar to Dc groups recognized previously and, in some cases, it is possible to hypothesize about their relationship to other groups of D. For example, our Dc-3 is similar to goldfish Dc and appears to be closely associated with Dm-3. Caudally, we recognized two Dc groups (Dc-4 and Dc-5) that appear closely associated with Dl and are similar to cell groups in tilapia that are part of the indirect telencephalo-cerebellar pathway [Imura et al, 2003]. In other cases, the relationships are less clear.…”

Section: Discussionmentioning

confidence: 80%

Cytoarchitecture of a Cichlid Fish Telencephalon

Burmeister

Fernald

2009

Brain Behav Evol

View full text Add to dashboard Cite

Although the telencephalon of ray-finned fishes has garnered considerable attention from comparative neuroanatomists, detailed descriptions of telencephalic organization are available for only a few species. This necessarily limits our understanding of telencephalic evolution, particularly in light of the extraordinary diversity of ray-finned fishes. Thus, we have charted the cyctoarchitecture of the telencephalon of the African cichlid fish, Astatotilapia (Haplochromis) burtoni. We examined tissue sectioned in the transverse plane, and categorized cell groups based on size, shape, and staining intensity of cells, the density and distribution of cells, cell-poor zones, and relationship of cell groups to the anterior commissure and external sulci. In addition, to facilitate visualization of the transitions among cell groups, we aligned and animated a series of 100 sequential brain sections. We found that the A. burtoni telencephalon was similar to other percomorphs in being highly elaborated with many distinct cell groups. In the pallium, Dm, Dl, and Dc had a large number of cell groups, whereas Dd and Dp were more uniform. Although we recognized many similarities between the pallium of A. burtoni and other teleosts, we also recognized two cell groups (Dl-g and Dm-2) that might represent specializations of cichlids. We found that the subpallium had a similar organization to that of other ray-finned fishes.

show abstract

“…In vertebrates, the cerebellum is one of the most variable brain parts in terms of shape and size [Butler and Hodos, 1996]. However, despite the notable macroanatomical variability, the cerebellum of teleost species plays an important role in monitoring incoming sensory information and in providing online adaptation of not only motor but also nonmotor functions to perform contextually relevant behaviors, even spatial cognition [Imura et al, 2003;Salas et al, 2008]. Thus, we hypothesize that a welldeveloped cerebellum allows fish larvae to improve their chance of successful recruitment after a long pelagic phase in the ocean.…”

Section: Relationship Between Brain Organization and Life History Tramentioning

confidence: 99%

Variation in Brain Organization of Coral Reef Fish Larvae according to Life History Traits

et al. 2014

View full text Add to dashboard Cite

In coral reefs, one of the great mysteries of teleost fish ecology is how larvae locate the relatively rare patches of habitat to which they recruit. The recruitment of fish larvae to a reef, after a pelagic phase lasting between 10 and 120 days, depends strongly on larval ability to swim and detect predators, prey and suitable habitat via sensory cues. However, no information is available about the relationship between brain organization in fish larvae and their sensory and swimming abilities at recruitment. For the first time, we explore the structural diversity of brain organization (comparative sizes of brain subdivisions: telencephalon, mesencephalon, cerebellum, vagal lobe and inferior lobe) among larvae of 25 coral reef fish species. We then investigate links between variation in brain organization and life history traits (swimming ability, pelagic larval duration, social behavior, diel activity and cue use relying on sensory perception). After accounting for phylogeny with independent contrasts, we found that brain organization covaried with some life history traits: (1) fish larvae with good swimming ability (>20 cm/s), a long pelagic duration (>30 days), diurnal activity and strong use of cues relying on sensory perception for detection of recruitment habitat had a larger cerebellum than other species. (2) Fish larvae with a short pelagic duration (<30 days) and nocturnal activity had a larger mesencephalon and telencephalon. Lastly, (3) fish larvae exhibiting solitary behavior during their oceanic phase had larger inferior and vagal lobes. Overall, we hypothesize that a well-developed cerebellum may allow fish larvae to improve their chances of successful recruitment after a long pelagic phase in the ocean. Our study is the first one to bring together quantitative information on brain organization and the relative development of major brain subdivisions across coral reef fish larvae, and more specifically to address the way in which this variation correlates with the recruitment process.

show abstract

Topographical Organization of an Indirect Telencephalo-Cerebellar Pathway through the Nucleus paracommissuralis in a Teleost, <i>Oreochromis niloticus</i>

Cited by 45 publications

References 33 publications

Afferent Connections of the Corpus cerebelli in Holocentrid Teleosts

Afferent Connections of the Corpus cerebelli in Holocentrid Teleosts

Cytoarchitecture of a Cichlid Fish Telencephalon

Variation in Brain Organization of Coral Reef Fish Larvae according to Life History Traits

Contact Info

Product

Resources

About