Competent larva in the starfish, Asterina pectinifera shifts from larval growth to juvenile formation by using environmental cue(s)

N. Murabe, H. Kaneko, Y. Nakajima

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Planktonic larva of the starfish, Asterina pectinifera becomes competent to metamorphose once the attachment organs composing of the papillae and adhesive disk have formed in the brachioarms. This larva, which is defined as brachiolaria, begins to metamorphosis in response to aquarium filter pebble stones which mimic the environmental cue(s). The adult rudiment at this stage possesses five hydrocoelar lobes and spicules. During metamorphosis, each lobe branches to form juvenile podia. Larval spicules develop into the fenestrated plates and spines. Without metamorphic induction, the sibling larvae are increasing in size. Growth of the adult rudiment of those larvae is characterized by enlargement of five hydrocoelar lobes without branching and extension of spicules with a few bifurcations in their tips. These observations suggest that the phase of competent larva shifts from larval growth to juvenile formation in response to environmental cue(s).

Original languageEnglish
Title of host publicationEchinoderms
Subtitle of host publicationDurham - Proceedings of the 12th International Echinoderm Conference
Pages463-466
Number of pages4
Publication statusPublished - 2010 Dec 1
Event12th International Echinoderm Conference - Durham, NH, United States
Duration: 2006 Aug 72006 Aug 11

Publication series

NameEchinoderms: Durham - Proceedings of the 12th International Echinoderm Conference

Other

Other12th International Echinoderm Conference
CountryUnited States
CityDurham, NH
Period06/8/706/8/11

ASJC Scopus subject areas

  • Animal Science and Zoology
  • Aquatic Science
  • Ecology, Evolution, Behavior and Systematics

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    Murabe, N., Kaneko, H., & Nakajima, Y. (2010). Competent larva in the starfish, Asterina pectinifera shifts from larval growth to juvenile formation by using environmental cue(s). In Echinoderms: Durham - Proceedings of the 12th International Echinoderm Conference (pp. 463-466). (Echinoderms: Durham - Proceedings of the 12th International Echinoderm Conference).