Role of the cerebral ganglia in the organization of alimentary behavior of the pteropod molluscClione limacina

I. S. Zakharov; V. N. Ierusalimskii

doi:10.1007/bf01196902

The role of light and the cerebral ganglia in the hydric balance of some lumbricid species

Bolletino di zoologia ◽

10.1080/11250008909355619 ◽

1989 ◽

Vol 56 (1) ◽

pp. 37-40

Author(s):

Encarnacion Sequeros Jimenez ◽

Nuria Navarro Diaz

Keyword(s):

Cerebral Ganglia ◽

Role Of Light

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Regulation of the Fish Alimentary Behavior: Role of Humoral Component

Journal of Evolutionary Biochemistry and Physiology ◽

10.1007/s10893-005-0061-z ◽

2005 ◽

Vol 41 (3) ◽

pp. 282-295 ◽

Cited By ~ 4

Author(s):

V. V. Kuz’mina

Keyword(s):

Alimentary Behavior

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The Role of Food Science Theory in Guiding the Alimentary Behavior Case Study: The Bucharest AES Students

Procedia - Social and Behavioral Sciences ◽

10.1016/j.sbspro.2012.05.286 ◽

2012 ◽

Vol 46 ◽

pp. 1263-1267

Author(s):

Lelia Voinea

Keyword(s):

Food Science ◽

Science Theory ◽

Alimentary Behavior

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Glutamate-like immunoreactivity in the cestode Hymenolepis diminuta

Canadian Journal of Zoology ◽

10.1139/z90-335 ◽

1990 ◽

Vol 68 (11) ◽

pp. 2417-2423 ◽

Cited By ~ 8

Author(s):

Harley Eklove ◽

Rodney A. Webb

Keyword(s):

Nervous System ◽

Hymenolepis Diminuta ◽

Basal Region ◽

Light Microscopic Level ◽

Cerebral Ganglia ◽

Large Groups ◽

Longitudinal Muscles ◽

Longitudinal Nerve ◽

Nerve Cords

Glutamate-like immunoreactivity in the cestode Hymenolepis diminuta was investigated at the light-microscopic level by immunohistochemistry with an antiglutamate antibody. Immunoreactivity was seen in the basal region of the suckers, in the rostellum, subtegumental regions, central nervous system, and longitudinal nerve cords, and in eggs. In the scolex the cerebral ganglia were diffusely immunoreactive, and immunoreactive tracts, passing from the cerebral ganglia to the suckers, were observed. The longitudinal nerve cords contained large groups of intensely stained cell bodies and processes throughout the length of the strobila. Immunoreactive tracts from the longitudinal nerve cords formed junctions with the deep longitudinal muscles only in the lateral regions of the proglottids. However, neuron-like varicose swellings were seen in the subtegumental area of the mature region. The localization of glutamate-like immunoreactivity in various parts of the nervous system and tissues of Hymenolepis diminuta provides further support for the role of glutamate as an excitatory neuromuscular transmitter in the platyhelminths.

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Control of locomotion in marine mollusk Clione limacina. VIII. Cerebropedal neurons

Journal of Neurophysiology ◽

10.1152/jn.1995.73.5.1912 ◽

1995 ◽

Vol 73 (5) ◽

pp. 1912-1923 ◽

Cited By ~ 28

Author(s):

Y. V. Panchin ◽

L. B. Popova ◽

T. G. Deliagina ◽

G. N. Orlovsky ◽

Y. I. Arshavsky

Keyword(s):

Motor Neurons ◽

The Other ◽

Locomotor Rhythm ◽

Marine Mollusk ◽

Sensory Inputs ◽

Cerebral Ganglia ◽

Excitatory Action ◽

Immunohistochemical Methods ◽

Clione Limacina

1. The pteropod mollusk Clione limacina swims by rhythmical oscillations of two wings, and its spatial orientation during locomotion is determined by tail movements. The majority of neurons responsible for generation of the wing and tail movements are located in the pedal ganglia. On the other hand, the majority of sensory inputs that affect wing and tail movements project to the cerebral ganglia. The goal of the present study was to identify and characterize cerebropedal neurons involved in the control of the swimming central generator or motor neurons of wing and tail muscles. Cerebropedal neurons affecting locomotion-controlling mechanisms are located in the rostromedial (CPA neurons), caudomedial (CPB neurons), and central (CPC neurons) zones of the cerebral ganglia. According to their morphology and effects on pedal mechanisms, 10 groups of the cerebropedal neurons can be distinguished. 2. CPA1 neurons project through the ipsilateral cerebropedal connective to both pedal ganglia. Activation of a CPA1 by current injection resulted in speeding up of the locomotor rhythm and intensification of the firing of the locomotor motor neurons. 3. CPA2 neurons send numerous thin fibers into the ipsi- and contralateral pedal and pleural ganglia through the cerebropedal and cerebropleural connectives. They strongly inhibit the wing muscle motor neurons and, to a lesser extent, slow down the locomotor rhythm. 4. CPB1 neurons project through the contralateral cerebropedal connective to both pedal ganglia. They activate the locomotor generator. 5. CPB2 neurons also project, through the contralateral cerebropedal connective, to both pedal ganglia. They affect wing muscle motor neurons. 6. CPB3 neurons have diverse morphology: they project to the pedal ganglia either through the ipsilateral cerebropedal connective, or through the contralateral one, or through both of them. They affect putative motor neurons of the tail muscles. 7. CPC1, CPC2, and CPC3 neurons project through the ipsilateral cerebropedal connective to both pedal ganglia. They activate the locomotor generator. 8. CPC4 and CPC5 neurons project through the contralateral cerebropedal connective to the contralateral pedal ganglia. They activate the locomotor generator. 9. Serotonergic neurons were mapped in the CNS of Clione by immunohistochemical methods. Location and size of cells in two groups of serotonin-immunoreactive neurons in the cerebral ganglia appeared to be similar to those of CPA1 and CPB1 neurons. This finding suggests a possible mechanism for serotonin's ability to exert a strong excitatory action on the locomotor generator of Clione. 10. The role of different groups of cerebropedal neurons is discussed in relation to different forms of Clione's behavior in which locomotor activity is involved.

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