Avoiding low-oxygen environments: oxytaxis as a mechanism of habitat selection in a marine invertebrate

Lagos, Marcelo E., White, Craig R. and Marshall, Dustin J. (2015) Avoiding low-oxygen environments: oxytaxis as a mechanism of habitat selection in a marine invertebrate. Marine Ecology Progress Series, 540 99-107. doi:10.3354/meps11509

Attached Files (Some files may be inaccessible until you login with your UQ eSpace credentials)
Name Description MIMEType Size Downloads

Author Lagos, Marcelo E.
White, Craig R.
Marshall, Dustin J.
Title Avoiding low-oxygen environments: oxytaxis as a mechanism of habitat selection in a marine invertebrate
Journal name Marine Ecology Progress Series   Check publisher's open access policy
ISSN 0171-8630
1616-1599
Publication date 2015-11-26
Year available 2015
Sub-type Article (original research)
DOI 10.3354/meps11509
Open Access Status File (Publisher version)
Volume 540
Start page 99
End page 107
Total pages 9
Place of publication Oldendorf, Germany
Publisher Inter-Research
Collection year 2016
Language eng
Formatted abstract
Oxygen-poor habitats are increasingly common in aquatic environments. Human activities are accelerating the spread of oxygen-poor environments, yet the way in which larvae avoid low-oxygen conditions remains poorly resolved. For organisms with a sessile or sedentary adult phase, habitat selection is crucial, and many organisms show sophisticated responses to various habitat cues during colonization. Whether oxygen availability serves as such a cue is unknown, yet increasingly, it seems that oxygen is an essential limiting resource in some systems. In a series of experiments, we manipulated oxygen levels during dispersal and colonization in larvae of the model marine invertebrate Bugula neritina in the laboratory. We found that, in the presence of lower oxygen levels, larvae reduce the time spent in habitat exploration and that they delay settlement. We also found that larvae avoid hypoxic water (positive oxytaxis)—the first such demonstration for marine larvae. All of these behaviors may decrease the likelihood of colonizing low-oxygen habitats in nature. Our results suggest that marine invertebrate larvae, in this species at least, can use oxygen availability as an initial cue for habitat selection but that additional factors (e.g. biofilms) determine settlement patterns.
Keyword Bugula neritina
Colonization
Dispersal
Hypoxia
Larval behavior
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2016 Collection
School of Biological Sciences Publications
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 2 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 2 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Sun, 27 Dec 2015, 00:23:35 EST by System User on behalf of School of Biological Sciences