Olfactory projections in a chondrostean fish,Acipenser baeri: An experimental study

Huesa, Gema; Anadón, Ramón; Yáñez, Julián

doi:10.1002/1096-9861(20001204)428:1<145::aid-cne10>3.0.co;2-7

Cited by 29 publications

(2 citation statements)

References 64 publications

(196 reference statements)

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“…This study also showed that the lateral olfactory tract specifically innervates the habenula while the medial olfactory tract also sends projections to the Vv. These projection patterns have been confirmed by anatomical tracing studies in other fish species (Huesa et al, 2000; Folgueira et al, 2004; Northcutt, 2011). In zebrafish, the mitral cells are shown to project to Vv and the dorsal-posterior part of the telencephalon (Dp) and to the right habenula and the hypothalamus in the diencephalon (Rink and Wullimann, 2004; Miyasaka et al, 2009; Gayoso et al, 2011).…”

Section: The Olfactory Bulb: Primary Processing Of Odor Informationsupporting

confidence: 67%

Neural circuits mediating olfactory-driven behavior in fish

Kermen¹,

Franco²,

Wyatt³

et al. 2013

Front. Neural Circuits

104

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The fish olfactory system processes odor signals and mediates behaviors that are crucial for survival such as foraging, courtship, and alarm response. Although the upstream olfactory brain areas (olfactory epithelium and olfactory bulb) are well-studied, less is known about their target brain areas and the role they play in generating odor-driven behaviors. Here we review a broad range of literature on the anatomy, physiology, and behavioral output of the olfactory system and its target areas in a wide range of teleost fish. Additionally, we discuss how applying recent technological advancements to the zebrafish (Danio rerio) could help in understanding the function of these target areas. We hope to provide a framework for elucidating the neural circuit computations underlying the odor-driven behaviors in this small, transparent, and genetically amenable vertebrate.

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Section: The Olfactory Bulb: Primary Processing Of Odor Informationsupporting

confidence: 67%

Neural circuits mediating olfactory-driven behavior in fish

Kermen¹,

Franco²,

Wyatt³

et al. 2013

Front. Neural Circuits

104

View full text Add to dashboard Cite

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“…The lateral portion of the pallium receives primary projections from the olfactory epithelium via the olfactory bulbs (Bleckmann et al, 1987;Smeets & Northcutt, 1987). The secondary olfactory projections, divided into a lateral and a medial tract, are similar to those observed in other vertebrates, including agnathans (Northcutt & Puzdrowski, 1988;Wicht & Northcutt, 1993;Wicht, 1996), amphibians (ten Donkelaar, 1998a, b;Dicke & Roth, 2007) and teleosts (Huesa et al, 2000;Northcutt, 2006). The larger of the two, the lateral tract, terminates most heavily in the lateral pallium of chondrichthyans (Hofmann & Northcutt, 2008).…”

Section: T E L E N C E P H a L O Nsupporting

confidence: 53%

Neuroecology of cartilaginous fishes: the functional implications of brain scaling

Yopak

2012

Journal of Fish Biology

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It is a widely accepted view that neural development can reflect morphological adaptations and sensory specializations. The aim of this review is to give a broad overview of the current status of brain data available for cartilaginous fishes and examine how perspectives on allometric scaling of brain size across this group of fishes has changed within the last 50 years with the addition of new data and more rigorous statistical analyses. The current knowledge of neuroanatomy in cartilaginous fishes is reviewed and data on brain size (encephalization, n = 151) and interspecific variation in brain organization (n = 84) has been explored to ascertain scaling relationships across this clade. It is determined whether similar patterns of brain organization, termed cerebrotypes, exist in species that share certain lifestyle characteristics. Clear patterns of brain organization exist across cartilaginous fishes, irrespective of phylogenetic grouping and, although this study was not a functional analysis, it provides further evidence that chondrichthyan brain structures might have developed in conjunction with specific behaviours or enhanced cognitive capabilities. Larger brains, with well‐developed telencephala and large, highly foliated cerebella are reported in species that occupy complex reef or oceanic habitats, potentially identifying a reef‐associated cerebrotype. In contrast, benthic and benthopelagic demersal species comprise the group with the smallest brains, with a relatively reduced telencephalon and a smooth cerebellar corpus. There is also evidence herein of a bathyal cerebrotype; deep‐sea benthopelagic sharks possess relatively small brains and show a clear relative hypertrophy of the medulla oblongata. Despite the patterns observed and documented, significant gaps in the literature have been highlighted. Brain mass data are only currently available on c. 16% of all chondrichthyan species, and only 8% of species have data available on their brain organization, with far less on subsections of major brain areas that receive distinct sensory input. The interspecific variability in brain organization further stresses the importance of performing functional studies on a greater range of species. Only an expansive data set, comprised of species that span a variety of habitats and taxonomic groups, with widely disparate behavioural repertoires, combined with further functional analyses, will help shed light on the extent to which chondrichthyan brains have evolved as a consequence of behaviour, habitat and lifestyle in addition to phylogeny.

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An experimental study of the connections of the telencephalon in the rainbow trout (Oncorhynchus mykiss). I: Olfactory bulb and ventral area

Folgueira

Anadón

Yáñez

2004

J of Comparative Neurology

123

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The fluorescent carbocyanine dye 1,1'-dioctadecyl 3,3,3',3'-tetramethylindocarbocyanine perchlorate (DiI) was used in fixed tissue to comprehensively analyze the connections of the olfactory bulbs and the different regions of the ventral (V) area of the telencephalic lobes (subpallium) of the rainbow trout. With this goal, DiI was applied to the different telencephalic nuclei and zones, as well as to the olfactory nerve, the olfactory bulb, the retina, and to several structures in the diencephalon and brainstem of juvenile trout. The olfactory bulbs maintain reciprocal connections with several regions of the telencephalon [ventral nucleus of V (Vv), supracommissural nucleus (Vs), posterior zone of D (Dp), preoptic nucleus], and also project to the diencephalon (posterior tuberal nucleus, posterior hypothalamic lobe). Vv receives afferents from Vs, the dorsal nucleus of V (Vd), the preoptic nucleus, and from several nuclei in the diencephalon and brainstem (suprachiasmatic nucleus, anterior and lateral tuberal nuclei, preglomerular complex, tertiary gustatory nucleus, posterior tubercle, inferior hypothalamic lobes, thalamus, torus semicircularis, secondary gustatory nucleus, locus coeruleus, superior raphe nucleus, central gray, and reticular formation), and projects to dorsal (pallial) regions and most of the nuclei afferent to Vv. The dorsal nucleus of V (Vd) and Vs mainly project to the dorsal area. In an accompanying article (Folgueira et al., 2004), we present the results of application of DiI to dorsal (pallial) telencephalic regions, as well as of several experiments of tracer application to extratelencephalic regions. The results presented here, together with those of the accompanying article, reveal a complex connectional pattern of the rainbow trout ventral telencephalon, most of these connections having not been described previously in salmonids.

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Olfactory projections in a chondrostean fish,Acipenser baeri: An experimental study

Cited by 29 publications

References 64 publications

Neural circuits mediating olfactory-driven behavior in fish

Neural circuits mediating olfactory-driven behavior in fish

Neuroecology of cartilaginous fishes: the functional implications of brain scaling

An experimental study of the connections of the telencephalon in the rainbow trout (Oncorhynchus mykiss). I: Olfactory bulb and ventral area

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