Chemosensory pathways in the capitate tentacles of the hydroid Cladonema

The introduction of an extract of Artemia into the sea water bathing tentacles from the hydroid Cladonema triggers a burst of electrical activity that can be recorded intracellularly from cnidocytes in the capitate tentacles. These bursts, which are composed of a variety of events, including action...

Full description

Saved in:
Bibliographic Details
Published inInvertebrate neuroscience Vol. 6; no. 1; pp. 23 - 32
Main Authors Price, Rebecca B, Anderson, Peter A V
Format Journal Article
LanguageEnglish
Published Germany Springer Nature B.V 01.03.2006
Subjects
Animals
Artemia
Chemoreceptor Cells - physiology
Cnidaria - physiology
Evoked Potentials - physiology
Neural Pathways - physiology
Neurons - physiology
Seawater
Online AccessGet full text

Cover

More Information
Summary:The introduction of an extract of Artemia into the sea water bathing tentacles from the hydroid Cladonema triggers a burst of electrical activity that can be recorded intracellularly from cnidocytes in the capitate tentacles. These bursts, which are composed of a variety of events, including action potentials and EPSPs, are Ca2+ dependent, and are abolished by pretreatment with NiCl2, suggesting that voltage-gated Ca2+ channels are involved in their generation or transmission. Intracellular injection of Lucifer Yellow and recordings from pairs of cnidocytes reveal that the cnidocytes are electrically coupled to one another, but that they are not uncoupled by heptanol. The role of these chemosensory pathways in priming the cnidocytes for discharge is discussed.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1354-2516
1439-1104
DOI:10.1007/s10158-005-0015-6