Colocalization of neuropeptide Y (NPY)-like and FMRFamide-like immunoreactivities in the brain of the Atlantic salmon (Salmo salar)

Vecino, Elena; Ekström, Peter

doi:10.1007/bf00645044

Cited by 60 publications

(58 citation statements)

References 51 publications

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“…In the mesencephalic tegmentum a group of small ChAT-ir cells, more numerous in Lepisosteus than in Amia , was seen dorsolateral to the oculomotor nucleus. Similarly, in the tegmentum of the rainbow trout, a small cholinergic cell group was described projecting to the optic tectum [Pérez et al, 2000] and corresponding to the laminar nucleus identified in other salmonids [Vecino and Ekström, 1992;Castro et al, 1999]. In other teleosts, such as the goldfish, zebrafish and tench, cholinergic cells were also observed in the rostral tegmental nucleus [Grover and Sharma, 1981;Mueller et al, 2004;Clemente et al, 2005].…”

Section: Localization Of Chat-ir Elements In the Midbrain Of Holosteansmentioning

confidence: 86%

Comparative Analysis of the Organization of the Cholinergic System in the Brains of Two Holostean Fishes, the Florida Gar Lepisosteus platyrhincus and the Bowfin Amia calva

Morona¹,

López²,

Northcutt³

et al. 2013

Brain Behav Evol

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The cholinergic system in the brain has been widely studied in most vertebrate groups, but there is no information available about this neurotransmission system in the brains of holostean fishes, a primitive and poorly understood group of actinopterygian fishes. The present study provides the first detailed information on the distribution of cholinergic cell bodies and fibers in the central nervous system in two holostean species, the Florida gar, Lepisosteus platyrhincus, and the bowfin, Amia calva. Immmunohistochemistry against the enzyme choline acetyltransferase (ChAT) revealed distinct groups of ChAT-immunoreactive (ChAT-ir) cells in the habenula, isthmic nucleus, laterodorsal tegmental nucleus, octavolateral area, reticular formation, cranial nerve motor nuclei and the motor column of the spinal cord, all of which seem to be highly conserved among vertebrates. Some ChAT-ir cells were detected in the basal telencephalon that appear in actinopterygians for the first time in the evolution of this neurotransmission system, whereas the remarkable cholinergic population in the optic tectum is a peculiar characteristic, the presence of which varies throughout evolution, although it is present in all teleosts studied. Abundant cholinergic fibers were found in the pretectal region and optic tectum, where they probably modulate vision, and in the hypothalamus and the interpeduncular neuropil. Some interspecific differences were also observed, such as the presence of ChAT-ir cells in the supraoptoparaventricular band only in Lepisosteus and in in the nucleus subglomerulosus only in Amia. In addition, ChAT-ir fibers in the olfactory bulb were detected only in Amia. Comparison of these results with those from other classes of vertebrates, and a segmental analysis to correlate cell populations, reveal that the pattern of the cholinergic system in holosteans is very close to that in ancestral actinopterygian fishes, as recently described in the bichir (Cladistia), although an important evolutionary novelty in holosteans is the presence of cholinergic cells in the basal telencephalon.

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Section: Localization Of Chat-ir Elements In the Midbrain Of Holosteansmentioning

confidence: 86%

Comparative Analysis of the Organization of the Cholinergic System in the Brains of Two Holostean Fishes, the Florida Gar Lepisosteus platyrhincus and the Bowfin Amia calva

Morona¹,

López²,

Northcutt³

et al. 2013

Brain Behav Evol

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“…Appetite in fish is driven by a number of factors including neuropeptide Y which is widely distributed in the central nervous system in a variety of fish species, including Atlantic salmon (Vecino and Ekstrom, 1992). Neuropeptide Y plays a critical role in the control of food intake and body mass in salmonids (Aldegunde and Mancebo, 2006;Silverstein et al, 1998), but there are also other factors such as galanin and grhelin (Lin et al, 2000;Volkoff et al, 2005).…”

Section: Discussionmentioning

confidence: 99%

Larval programming of post-hatch muscle growth and activity in Atlantic salmon (Salmo salar)

Albokhadaim

Hammond

Ashton

et al. 2007

Journal of Experimental Biology

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SUMMARY Larval muscle development in Atlantic salmon is known to be affected by temperature; however, the long term effects and possible mechanisms involved are less well understood. Therefore, the aim of this study was to evaluate the influence of egg incubation temperature on post-hatch muscle growth and fish activity. Salmon eggs were incubated at either 10°C or 5°C from fertilization until hatching, then subsequently both groups were reared at 5°C. Fish from both groups were sampled at the eyed stage, 6 and 21 weeks after first feeding, for muscle cellularity analysis and immunocytochemistry. In addition,to try to establish a mechanism for altered growth, the activity of the fish was measured at 3, 6 and 21 weeks after first feeding. Our results demonstrate that whereas fish incubated at 10°C grow faster, the fish incubated at 5°C show a more sustained period of muscle growth and by 21 weeks are significantly longer, heavier and have more muscle fibres than those fish incubated at a higher temperature. We also demonstrate that fish raised at 5°C show increased food seeking activity throughout development and that this may explain their sustained growth and muscle development. These results taken together, demonstrate that egg incubation temperature up to hatching in salmon is critical for longer term muscle growth, twinned with increased activity. This is of interest to the aquaculture industry in term of the production of good quality fish protein.

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“…Nevertheless, such neurons have been described in cyclostomes [Chiba and Honma, 1992;Eisthen and Northcutt, 1996], bony fishes König, 1988, 1989a, b;Batten et al, 1990;Ostholm et al, 1990;Fujii and Kobayashi, 1992a;Vecino and Ekström, 1992;Vallarino et al, 1995;Pestarino and Vallarino, 1996], Pipa pipa and Ceratophrys ornata among amphibians and the ruin lizard [Vallarino et al, 1994].…”

Section: Comparative Aspectsmentioning

confidence: 99%

Localization of FMRFamide-Like Immunoreactivity in the Brain of the Viviparous Skink (Chalcides chalcides)

D’Aniello¹,

Fiorentin²,

Pinelli³

et al. 2001

Brain Behav Evol

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Neuroanatomical distribution of FMRFamide-like immunoreactivity was investigated in the brain and olfactory system of the viviparous skink, Chalcides chalcides. In the adult brain FMRFamide immunoreactive (ir) perikarya were observed in the diagonal band of Broca, medial septal nucleus, accumbens nucleus, bed nucleus of the anterior commissure, periventricular hypothalamic nucleus, lateral forebrain bundle, and lateral preoptic, subcommissural, suprachiasmatic and lateral hypothalamic areas. This pattern was seen in both male and female brains. Though all major brain areas showed FMRFamide-ir innervation, the densest ir fiber network was observed in the hypothalamus. During development, ir elements were observed for the first time in embryos at mid-pregnancy. FMRFamide perikarya were located along the ventral surface of the vomeronasal nerve, in the olfactory peduncle mediobasally, as well as in the anterior olfactory nucleus and olfactory tubercle. Furthermore, some ir neurons were observed in the rhombencephalic reticular substance; however, the ir fiber network was poorly developed. Later in development FMRFamide-ir neurons appeared also in the bed nucleus of the anterior commissure as well as the rhombencephalic nucleus of solitary tract and the dorsal motor nucleus of vagus nerve. In juveniles, the distribution profile of FMRFamide immunoreactivity was substantially similar to that of the adults, with a less widespread neuronal distribution and a more developed fiber network. Ontogenetic presence of FMRFamide immunoreactivity in the nasal area has been linked to the presence of a nervus terminalis in this reptile.

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Colocalization of neuropeptide Y (NPY)-like and FMRFamide-like immunoreactivities in the brain of the Atlantic salmon (Salmo salar)

Cited by 60 publications

References 51 publications

Comparative Analysis of the Organization of the Cholinergic System in the Brains of Two Holostean Fishes, the Florida Gar <b><i>Lepisosteus platyrhincus</i></b> and the Bowfin <b><i>Amia calva</i></b>

Comparative Analysis of the Organization of the Cholinergic System in the Brains of Two Holostean Fishes, the Florida Gar <b><i>Lepisosteus platyrhincus</i></b> and the Bowfin <b><i>Amia calva</i></b>

Larval programming of post-hatch muscle growth and activity in Atlantic salmon (Salmo salar)

Localization of FMRFamide-Like Immunoreactivity in the Brain of the Viviparous Skink <i>(Chalcides chalcides)</i>

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