Swim pacemakers in box jellyfish are modulated by the visual input.
(2008) In Journal of Comparative Physiology A 194(7). p.641-651- Abstract
- A major part of the cubozoan central nervous system is situated in the eye-bearing rhopalia. One of the neuronal output channels from the rhopalia carries a swim pacemaker signal, which has a one-to-one relation with the swim contractions of the bell shaped body. Given the advanced visual system of box jellyfish and that the pacemaker signal originates in the vicinity of these eyes, it seems logical to assume that the pacemakers are modified by the visual input. Here, the firing frequency and distribution of inter-signal intervals (ISIs) of single pacemakers are examined in the Caribbean box jellyfish, Tripedalia cystophora. It is shown that the absolute ambient light intensity, if kept constant, has no influence on the signal, but if the... (More)
- A major part of the cubozoan central nervous system is situated in the eye-bearing rhopalia. One of the neuronal output channels from the rhopalia carries a swim pacemaker signal, which has a one-to-one relation with the swim contractions of the bell shaped body. Given the advanced visual system of box jellyfish and that the pacemaker signal originates in the vicinity of these eyes, it seems logical to assume that the pacemakers are modified by the visual input. Here, the firing frequency and distribution of inter-signal intervals (ISIs) of single pacemakers are examined in the Caribbean box jellyfish, Tripedalia cystophora. It is shown that the absolute ambient light intensity, if kept constant, has no influence on the signal, but if the intensity changes, it has a major impact on both frequency and ISIs. If the intensity suddenly drops there is an increase in firing frequency, and the ISIs become more homogeneously distributed. A rise in intensity, on the other hand, produces a steep decline in the frequency and makes the ISIs highly variable. These electrophysiological data are correlated with behavioral observations from the natural habitat of the medusae. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1154664
- author
- Garm, Anders LU and Bielecki, J
- organization
- publishing date
- 2008
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Swim pacemaker - Cubomedusae - Vision - Inter-signal interval - Firing frequency
- in
- Journal of Comparative Physiology A
- volume
- 194
- issue
- 7
- pages
- 641 - 651
- publisher
- Springer
- external identifiers
-
- wos:000257374400005
- pmid:18446348
- scopus:46649104055
- pmid:18446348
- ISSN
- 1432-1351
- DOI
- 10.1007/s00359-008-0336-0
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Department of Cell and Organism Biology (Closed 2011.) (011002100)
- id
- b5d720df-6939-4e63-b543-eea22220580b (old id 1154664)
- date added to LUP
- 2016-04-01 14:10:32
- date last changed
- 2022-01-27 23:12:17
@article{b5d720df-6939-4e63-b543-eea22220580b,
abstract = {{A major part of the cubozoan central nervous system is situated in the eye-bearing rhopalia. One of the neuronal output channels from the rhopalia carries a swim pacemaker signal, which has a one-to-one relation with the swim contractions of the bell shaped body. Given the advanced visual system of box jellyfish and that the pacemaker signal originates in the vicinity of these eyes, it seems logical to assume that the pacemakers are modified by the visual input. Here, the firing frequency and distribution of inter-signal intervals (ISIs) of single pacemakers are examined in the Caribbean box jellyfish, Tripedalia cystophora. It is shown that the absolute ambient light intensity, if kept constant, has no influence on the signal, but if the intensity changes, it has a major impact on both frequency and ISIs. If the intensity suddenly drops there is an increase in firing frequency, and the ISIs become more homogeneously distributed. A rise in intensity, on the other hand, produces a steep decline in the frequency and makes the ISIs highly variable. These electrophysiological data are correlated with behavioral observations from the natural habitat of the medusae.}},
author = {{Garm, Anders and Bielecki, J}},
issn = {{1432-1351}},
keywords = {{Swim pacemaker - Cubomedusae - Vision - Inter-signal interval - Firing frequency}},
language = {{eng}},
number = {{7}},
pages = {{641--651}},
publisher = {{Springer}},
series = {{Journal of Comparative Physiology A}},
title = {{Swim pacemakers in box jellyfish are modulated by the visual input.}},
url = {{http://dx.doi.org/10.1007/s00359-008-0336-0}},
doi = {{10.1007/s00359-008-0336-0}},
volume = {{194}},
year = {{2008}},
}