Using a thermistor flowmeter with attached video camera for monitoring sponge excurrent speed and oscular behaviour

Brian W. Strehlow, D. Jorgensen, N.S. Webster, M.C. Pineda, A. Duckworth

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

© 2016 Strehlow et al.
A digital, four-channel thermistor flowmeter integrated with time-lapse cameras was developed as an experimental tool for measuring pumping rates in marine sponges, particularly those with small excurrent openings (oscula). Combining flowmeters with time-lapse imagery yielded valuable insights into the contractile behaviour of oscula in Cliona orientalis. Osculum cross-sectional area (OSA) was positively correlated to measured excurrent speeds (ES), indicating that sponge pumping and osculum contraction are coordinated behaviours. Both OSA and ES were positively correlated to pumping rate (Q). Diel trends in pumping activity and osculum contraction were also observed, with sponges increasing their pumping activity to peak at midday and decreasing pumping and contracting oscula at night. Short-term elevation of the suspended sediment concentration (SSC) within the seawater initially decreased pumping rates by up to 90%, ultimately resulting in closure of the oscula and cessation of pumping.
Original languageEnglish
Pages (from-to)e2761
JournalPEERJ
Volume4
DOIs
Publication statusPublished - 13 Dec 2016

Fingerprint Dive into the research topics of 'Using a thermistor flowmeter with attached video camera for monitoring sponge excurrent speed and oscular behaviour'. Together they form a unique fingerprint.

Cite this