Studies on central projections of the pineal nerve tract in rainbow trout, Salmo gairdneri Richardson, using cobalt chloride iontophoresis

Hafeez, Maryam; Zerihun, Leghesse

doi:10.1007/bf00219669

Cited by 80 publications

(39 citation statements)

References 31 publications

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“…The pretectum, OT and the mesencephalic tegmentum are the main targets of the lamprey pineal organ [Puzdrowski and Northcutt, 1989;Yáñez et al, 1993;. Although pinealo-tectal projections were not described in chondrichthyans [Mandado et al, 2001] or in some teleosts [Hafeez and Zerihun, 1974;Ekström and van Veen, 1984], they were found in other teleost species [ C. auratus , Jiménez et al, 1995;P. sphore (Ham.…”

Section: Diencephalic Projectionsmentioning

confidence: 99%

Afferent Connections of the Optic Tectum in Lampreys: An Experimental Study

Arriba

Pombal²

2006

Brain Behav Evol

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Tectal afferents were studied in adult lampreys of three species (Ichthyomyzon unicuspis, Lampetra fluviatilis, and Petromyzon marinus) following unilateral BDA injections into the optic tectum (OT). In the secondary prosencephalon, neurons projecting to the OT were observed in the pallium, the subhipoccampal lobe, the striatum, the preoptic area and the hypothalamus. Following tectal injections, backfilled diencephalic cells were found bilaterally in: prethalamic eminence, ventral geniculate nucleus, periventricular prethalamic nucleus, periventricular pretectal nucleus, precommissural nucleus, magnocellular and parvocellular nuclei of the posterior commissure and pretectal nucleus; and ipsilaterally in: nucleus of Bellonci, periventricular thalamic nucleus, nucleus of the tuberculum posterior, and the subpretectal tegmentum, as well as in the pineal organ. At midbrain levels, retrogradely labeled cells were seen in the ipsilateral torus semicircularis, the contralateral OT, and bilaterally in the mesencephalic reticular formation and inside the limits of the retinopetal nuclei. In the hindbrain, tectal projecting cells were also bilaterally labeled in the dorsal and lateral isthmic nuclei, the octavolateral area, the sensory nucleus of the descending trigeminal tract, the dorsal column nucleus and the reticular formation. The rostral spinal cord also exhibited a few labeled cells. These results demonstrate a complex pattern of connections in the lamprey OT, most of which have been reported in other vertebrates. Hence, the lamprey OT receives a large number of nonvisual afferents from all major brain areas, and so is involved in information processing from different somatic sensory modalities.

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Section: Diencephalic Projectionsmentioning

confidence: 99%

Afferent Connections of the Optic Tectum in Lampreys: An Experimental Study

Arriba

Pombal²

2006

Brain Behav Evol

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“…The pretectal area also receives rich pinealofugal terminal fields in chondrosteans [Yáñez and Anadón, 1998] and teleosts [Hafeez and Zerihun, 1974;Ekström and van Veen, 1984;Jiménez et al, 1995;Yáñez et al, 2009]. The central pretectal nucleus is a site of primary retinal and tectal terminal fields in teleosts [Presson et al, 1985;Northcutt and Wullimann, 1988;Northcutt and Butler, 1991] and projects to the tectum and both the corpus and valvula of the cerebellum [Northcutt, 1995;Wullimann, 1998].…”

Section: Pinealofugal Projectionsmentioning

confidence: 99%

“…Thus, the habenula was labeled as a pinealofugal terminal region in most of the species investigated, including the teleosts Oncorhynchus mykis s [Hafeez and Zerihun, 1974;, Gasterosteus aculeatus [Ekström and van Veen, 1983;, Carassius auratus [Jimenéz et al, 1995] and D. labrax (present study), the chondrostean Acipenser baeri [Yáñez and Anadón, 1998] and the elasmobranch Raja montagui [Mandado et al, 2001]. Exceptions were the carp, eel and zebrafish, which do not exhibit terminal fields in the habenula [Ekström and van Veen, 1984;Yáñez et al, 2009], as well as the lampreys Ichthyomyzon unicuspis and Petromyzon marinus , which do not present any labeling at this level [Puzdrowski and Northcutt, 1989;Yáñez et al, 1993].…”

Section: Pinealofugal Projectionsmentioning

confidence: 99%

“…More recently, several authors have investigated pineal neural pathways in many species using cobalt chloride iontophoresis [Hafeez and Zerihun, 1974] or horseradish peroxidase tracing methods [Ekström andvan Veen, 1983, 1984;Ekström and Korf, 1986;Puzdrowski and Northcutt, 1989;Jiménez et al, 1995]. Since the introduction of the lipophilic carbocyanine dyes [i.e.…”

mentioning

confidence: 99%

“…To date, the pineal projections have been investigated in several vertebrate species including lampreys [Puzdrowski and Northcutt, 1989;Yáñez et al, 1993;Pombal et al, 1994Pombal et al, , 1999, elasmobranchs [Mandado et al, 2001], sturgeons [Yáñez and Anadón, 1998] and some teleosts [Hafeez and Zerihun, 1974;Ekström andvan Veen, 1983, 1984;Holmqvist et al, 1994;Jiménez et al, 1995;Yáñez et al, 2009]. In those animals, the pineal tract has been observed as bilateral projections coursing through the habenula to reach different diencephalic (preoptic area, pretectum, thalamus, hypothalamus) and mesencephalic areas (optic tectum, tegmentum, torus semicircularis, raphe) [Ekström and Meissl, 1997].…”

mentioning

confidence: 99%

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Afferent and Efferent Connections of the Pineal Organ in the European Sea Bass <i>Dicentrarchus labrax:</i> A Carbocyanine Dye Tract-Tracing Study

Servili

Herrera-Pérez²,

Yáñez³

et al. 2011

Brain Behav Evol

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The pineal organ of fish is a photosensitive structure that receives light information from the environment and transduces it into hormonal (rhythmic melatonin secretion) and neural (efferent projections/neurotransmitters) signals. In this study, we focused on this neural output. Thus, we performed a tract-tracing study using 1,1′-dioctadecyl-3,3,3′,3′-tetramethylindocarbocyanine perchlorate (DiI), a fluorescent carbocyanine dye, in order to elucidate the efferent and afferent connections of the pineal organ in the European sea bass. The axonal transport of DiI revealed extensive bilateral projections in the sea bass brain. The efferent projections of the sea bass pineal organ reach the habenula, ventral thalamus, periventricular pretectum, central pretectal area, posterior tubercle and medial and dorsal tegmental areas. In addition, in this study we also examined the pinealopetal system in sea bass. This analysis demonstrated that the sea bass pineal organ receives central projections from neurons located, to a large extent, in brain areas innervated by pineal efferent projections, i.e. the thalamic eminence, habenula, ventral thalamus, dorsal thalamus, periventricular pretectum, posterior commissure, posterior tubercle and medial tegmental area. This study is the first description of pinealofugal projections in a representative of Perciformes, which constitutes a derived order within teleosts. Moreover, it represents the first evidence for the presence of pinealopetal neurons in the brain of a teleost species. Our findings, together with the analysis of retinal connections, represent a step forward in the understanding of the integration of photoperiodic signals into the central nervous system of sea bass.

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Afferent and efferent connections of the habenula in the rainbow trout (Oncorhynchus mykiss): An indocarbocyanine dye (DiI) study

Yáñez

Anadón

1996

J. Comp. Neurol.

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The habenula is a conserved structure in the brain of vertebrates. With the aim of further understanding of the evolution of the habenular system in vertebrates, we studied the afferent and efferent connections of the habenula of the rainbow trout. Experiments included application of the carbocyanine dye 1,1'-dioctadecyl-3,3,3',3'-tetramethylindocarbocyanine perchlorate (DiI) into the habenula, telencephalon, pineal organ, posterior tubercle, and interpeduncular nucleus (IPN). The results obtained reveal a consistent pattern of habenular connections. Most afferents originate from three nuclei, one extending from the preoptic region to the rostral thalamus (the entopeduncular nucleus), the second located in the region of the hypothalamus-posterior tubercle and consisting of large bipolar cells (tuberculohabenular nucleus), and the third in the preoptic region (preoptic nucleus). A few large neurons of the locus coeruleus appeared to be labeled in some cases. The trout habenula also receives pineal and parapineal projections. Small labeled glial cells were observed in the thalamus around the fasciculus retroflexus and, sometimes, around the IPN. The most conspicuous efferents coursed in the fasciculus retroflexus to the IPN, the isthmal raphe, and the central gray. The existence of olfactohabenular or habenulotelencephalic projections is discussed.

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Studies on central projections of the pineal nerve tract in rainbow trout, Salmo gairdneri Richardson, using cobalt chloride iontophoresis

Cited by 80 publications

References 31 publications

Afferent Connections of the Optic Tectum in Lampreys: An Experimental Study

Afferent Connections of the Optic Tectum in Lampreys: An Experimental Study

Afferent and Efferent Connections of the Pineal Organ in the European Sea Bass <i>Dicentrarchus labrax:</i> A Carbocyanine Dye Tract-Tracing Study

Afferent and efferent connections of the habenula in the rainbow trout (Oncorhynchus mykiss): An indocarbocyanine dye (DiI) study

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