Control of planula migration by LWamide and RFamide neuropeptides in Hydractinia echinata

Yuki Katsukura; Hiroshi Ando; Charles N. David; Cornelis J. P. Grimmelikhuijzen; Tsutomu Sugiyama

doi:10.1242/jeb.00974

Control of planula migration by LWamide and RFamide neuropeptides in Hydractinia echinata

Yuki Katsukura, Hiroshi Ando, Charles N. David, Cornelis J. P. Grimmelikhuijzen, Tsutomu Sugiyama

34 Citations (Scopus)

Abstract

Planula larvae of Hydractinia echinata (Cnidaria) settled ona substratum migrate toward light. We observed that planulamigration is not a continuous process. Instead, it consistsof repeating cycles of active migration (about 8 min on average)and inactive resting periods (about 26 min on average). Thispattern of periodic migration is regulated by LWamide and RFamideneuropeptides. LWamide (10^-8 mol l^-1) stimulates migration primarilyby making the active periods longer, whereas RFamide (10^-7 moll^-1) inhibits migration by blocking the initiation and alsoshortening the length of the active periods. Since sensory neuronscontaining LWamides and RFamides are present in planula larvae,it appears likely that planula migration is regulated by therelease of endogenous neuropeptides in response to environmentalcues.

Original language	English
Journal	Journal of Experimental Biology
Issue number	Vol. 207 (11)
Pages (from-to)	1803-1810
ISSN	0022-0949
DOIs	https://doi.org/10.1242/jeb.00974
Publication status	Published - 2004

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@article{346d935074c411dbbee902004c4f4f50,

title = "Control of planula migration by LWamide and RFamide neuropeptides in Hydractinia echinata",

abstract = "Planula larvae of Hydractinia echinata (Cnidaria) settled on a substratum migrate toward light. We observed that planula migration is not a continuous process. Instead, it consists of repeating cycles of active migration (about 8 min on average) and inactive resting periods (about 26 min on average). This pattern of periodic migration is regulated by LWamide and RFamide neuropeptides. LWamide (10-8 mol l-1) stimulates migration primarily by making the active periods longer, whereas RFamide (10-7 mol l-1) inhibits migration by blocking the initiation and also shortening the length of the active periods. Since sensory neurons containing LWamides and RFamides are present in planula larvae, it appears likely that planula migration is regulated by the release of endogenous neuropeptides in response to environmental cues. ",

author = "Yuki Katsukura and Hiroshi Ando and David, {Charles N.} and Grimmelikhuijzen, {Cornelis J. P.} and Tsutomu Sugiyama",

note = "Key words: Hydractinia echinata, planula migration, RFamide neuropeptide, LWamide neuropeptide",

year = "2004",

doi = "10.1242/jeb.00974",

language = "English",

pages = "1803--1810",

journal = "Journal of Experimental Biology",

issn = "0022-0949",

publisher = "The/Company of Biologists Ltd.",

number = "Vol. 207 (11)",

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TY - JOUR

T1 - Control of planula migration by LWamide and RFamide neuropeptides in Hydractinia echinata

AU - Katsukura, Yuki

AU - Ando, Hiroshi

AU - David, Charles N.

AU - Grimmelikhuijzen, Cornelis J. P.

AU - Sugiyama, Tsutomu

N1 - Key words: Hydractinia echinata, planula migration, RFamide neuropeptide, LWamide neuropeptide

PY - 2004

Y1 - 2004

N2 - Planula larvae of Hydractinia echinata (Cnidaria) settled on a substratum migrate toward light. We observed that planula migration is not a continuous process. Instead, it consists of repeating cycles of active migration (about 8 min on average) and inactive resting periods (about 26 min on average). This pattern of periodic migration is regulated by LWamide and RFamide neuropeptides. LWamide (10-8 mol l-1) stimulates migration primarily by making the active periods longer, whereas RFamide (10-7 mol l-1) inhibits migration by blocking the initiation and also shortening the length of the active periods. Since sensory neurons containing LWamides and RFamides are present in planula larvae, it appears likely that planula migration is regulated by the release of endogenous neuropeptides in response to environmental cues.

AB - Planula larvae of Hydractinia echinata (Cnidaria) settled on a substratum migrate toward light. We observed that planula migration is not a continuous process. Instead, it consists of repeating cycles of active migration (about 8 min on average) and inactive resting periods (about 26 min on average). This pattern of periodic migration is regulated by LWamide and RFamide neuropeptides. LWamide (10-8 mol l-1) stimulates migration primarily by making the active periods longer, whereas RFamide (10-7 mol l-1) inhibits migration by blocking the initiation and also shortening the length of the active periods. Since sensory neurons containing LWamides and RFamides are present in planula larvae, it appears likely that planula migration is regulated by the release of endogenous neuropeptides in response to environmental cues.

U2 - 10.1242/jeb.00974

DO - 10.1242/jeb.00974

M3 - Journal article

SN - 0022-0949

SP - 1803

EP - 1810

JO - Journal of Experimental Biology

JF - Journal of Experimental Biology

IS - Vol. 207 (11)

ER -

Control of planula migration by LWamide and RFamide neuropeptides in Hydractinia echinata

Abstract

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