Research Data

Projected near-future CO2 levels increase activity and alter defensive behaviours in the tropical squid Idiosepius pygmaeus

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General
Title
Projected near-future CO2 levels increase activity and alter defensive behaviours in the tropical squid Idiosepius pygmaeus
Type
Dataset
Date Record Created
2017-12-20
Date Record Modified
2018-03-13
Language
English
Coverage
Date Coverage
2013-09-01 to 2014-09-24
Time Period
(no information)
Geospatial Location
  • Squid were collected from Cleveland Bay, Townsville, Queensland, Australia (19°25′S, 146°82′E) and transferred to James Cook University
Description
Descriptions
  1. Type: full

    Abstract [Related Publication]: Carbon dioxide (CO₂) levels projected to occur in the oceans by the end of this century cause a range of behavioural effects in fish, but whether other highly active marine organisms, such as cephalopods, are similarly affected is unknown. We tested the effects of projected future CO₂ levels (626 and 956 µatm) on the behaviour of male two-toned pygmy squid, Idiosepius pygmaeus. Exposure to elevated CO₂ increased the number of active individuals by 19–25% and increased movement (number of line-crosses) by nearly 3 times compared to squid at present-day CO₂. Squid vigilance and defensive behaviours were also altered by elevated CO₂ with >80% of individuals choosing jet escape responses over defensive arm postures in response to a visual startle stimulus, compared with 50% choosing jet escape responses at control CO₂. In addition, more escape responses were chosen over threat behaviours in body pattern displays at elevated CO₂ and individuals were more than twice as likely to use ink as a defence strategy at 956 µatm CO₂, compared with controls. Increased activity could lead to adverse effects on energy budgets as well as increasing visibility to predators. A tendency to respond to a stimulus with escape behaviours could increase survival, but may also be energetically costly and could potentially lead to more chases by predators compared with individuals that use defensive postures. These results demonstrate that projected future ocean acidification affects the behaviours of a tropical squid species.

    The full methodology is available in the Open Access publication from the Related Publications link below.

Related Publications
  1. Spady, Blake L., Watson, Sue-Ann, Chase, Tory J., and Munday, Philip L. (2014) Projected near-future CO2 levels increase activity and alter defensive behaviours in the tropical squid Idiosepius pygmaeus. Biology Open, 3 (11). pp. 1063-1070.
    Open Access
Related Websites
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Related Data
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Related Services
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Technical metadata
(no information)
People
Creators
  1. Owned by: Mr Blake Spady , blake.spady@my.jcu.edu.au , College of Science & Engineering, ARC Centre of Excellence for Coral Reef Studies
  2. Associated with: Dr Sue-Ann Watson , sueann.watson@jcu.edu.au , ARC Centre of Excellence for Coral Reef Studies, Geoscience
  3. Associated with: Mr Tory Chase , tory.chase@my.jcu.edu.au , College of Science & Engineering
  4. Associated with: Prof Philip Munday , philip.munday@jcu.edu.au , ARC Centre of Excellence for Coral Reef Studies
Primary Contact
Mr Blake Spady, blake.spady@my.jcu.edu.au
Supervisors
  1. Dr Sue-Ann Watson , sueann.watson@jcu.edu.au
  2. Prof Philip Munday , philip.munday@jcu.edu.au
Collaborators
(no information)
Subject
Fields of Research
  1. 060205 - Marine and Estuarine Ecology (incl. Marine Ichthyology) (060205)
Socio-Economic Objective
  1. 960307 - Effects of Climate Change and Variability on Australia (excl. Social Impacts) (960307)
Keywords
  1. ocean acidification
  2. cephalopod
  3. anti-predator behaviour
  4. escape
  5. avoidance
  6. startle response
  7. ARC Centre of Excellence for Coral Reef Studies
Research Activity
(no information)
Research Themes
Tropical Ecosystems, Conservation and Climate Change
Rights
License
CC BY 4.0: Attribution 4.0 International
License - Other
(no information)
Access Rights/Conditions
Open access. If the data is not freely accessible via the link provided, please contact the nominated data manager or researchdata@jcu.edu.au for assistance.
Type
open
Rights
(no information)
Data
Data Location
Online Locations
Attachments
  1. Spady_et_al._2014_DATAHub.xlsx (Data File, Public)
  2. Spady_et_al._2014_DATAHub.ods (Data File, Public)
Stored At
(no information)
Citation
Cite:
Spady, B.; Watson, S.-A.; Chase, T.; Munday, P. (2018). Projected near-future CO2 levels increase activity and alter defensive behaviours in the tropical squid Idiosepius pygmaeus. James Cook University. (dataset). http://dx.doi.org/10.4225/28/5aa75291e25ad
Digital Object Identifier (DOI):
10.4225/28/5aa75291e25ad