Changing form and function during development in rowing hydromedusae
2008; Inter-Research; Volume: 374; Linguagem: Inglês
10.3354/meps07762
ISSN1616-1599
AutoresJF Weston, SP Colin, John H. Costello, Emily M. Abbott,
Tópico(s)Marine Ecology and Invasive Species
ResumoMEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections MEPS 374:127-134 (2009) - DOI: https://doi.org/10.3354/meps07762 Changing form and function during development in rowing hydromedusae Jacqueline Weston1, Sean P. Colin1,*, John H. Costello2, Emily Abbott2 1Environmental Science/Marine Biology, Roger Williams University, Bristol, Rhode Island 02908, USA 2Biology Department, Providence College, Providence, Rhode Island 02918, USA *Corresponding author. Email: scolin@rwu.edu ABSTRACT: Bell morphology, propulsion and foraging appear to be interdependent traits among medusan lineages. In general, taxa that possess large oblate bells swim via rowing propulsion and forage as cruising predators, and taxa with small prolate bells swim via jet propulsion and forage as ambush predators. However, hydromedusae from the taxa Leptothecata (referred to here as leptomedusae) experience large changes in bell size and shape during their development. We used video analysis to evaluate changes in bell morphology and kinematics, fluid interactions and behavior of 2 leptomedusan species, Aequorea victoria and Eutonina indicans, during these developmental transitions. Both species begin as small, prolate, jetting juveniles ( 0.5 cm diameter). In addition to morphological and propulsive alterations, we observed changes in behavior, whereby as jetters they rarely swam and as rowers they swam nearly continuously. These findings demonstrate that bell fineness, velar aperture ratio and bell kinematics interact to determine fluid interactions and thus determine propulsive mode. KEY WORDS: Functional morphology · Foraging behavior · Propulsion mode · Swimming behavior · Hydromedusae Full text in pdf format PreviousNextCite this article as: Weston J, Colin SP, Costello JH, Abbott E (2009) Changing form and function during development in rowing hydromedusae. Mar Ecol Prog Ser 374:127-134. https://doi.org/10.3354/meps07762 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 374. Online publication date: January 13, 2009 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2009 Inter-Research.
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