Skip to main content
Advertisement

Main menu

  • Home
  • Articles
    • Accepted manuscripts
    • Issue in progress
    • Latest complete issue
    • Issue archive
    • Archive by article type
    • Special issues
    • Subject collections
    • Interviews
    • Sign up for alerts
  • About us
    • About JEB
    • Editors and Board
    • Editor biographies
    • Travelling Fellowships
    • Grants and funding
    • Journal Meetings
    • Workshops
    • The Company of Biologists
    • Journal news
  • For authors
    • Submit a manuscript
    • Aims and scope
    • Presubmission enquiries
    • Article types
    • Manuscript preparation
    • Cover suggestions
    • Editorial process
    • Promoting your paper
    • Open Access
    • Outstanding paper prize
    • Biology Open transfer
  • Journal info
    • Journal policies
    • Rights and permissions
    • Media policies
    • Reviewer guide
    • Sign up for alerts
  • Contacts
    • Contact JEB
    • Subscriptions
    • Advertising
    • Feedback
    • Institutional usage stats (logged-in users only)
  • COB
    • About The Company of Biologists
    • Development
    • Journal of Cell Science
    • Journal of Experimental Biology
    • Disease Models & Mechanisms
    • Biology Open

User menu

  • Log in
  • Log out

Search

  • Advanced search
Journal of Experimental Biology
  • COB
    • About The Company of Biologists
    • Development
    • Journal of Cell Science
    • Journal of Experimental Biology
    • Disease Models & Mechanisms
    • Biology Open

supporting biologistsinspiring biology

Journal of Experimental Biology

  • Log in
Advanced search

RSS  Twitter  Facebook  YouTube  

  • Home
  • Articles
    • Accepted manuscripts
    • Issue in progress
    • Latest complete issue
    • Issue archive
    • Archive by article type
    • Special issues
    • Subject collections
    • Interviews
    • Sign up for alerts
  • About us
    • About JEB
    • Editors and Board
    • Editor biographies
    • Travelling Fellowships
    • Grants and funding
    • Journal Meetings
    • Workshops
    • The Company of Biologists
    • Journal news
  • For authors
    • Submit a manuscript
    • Aims and scope
    • Presubmission enquiries
    • Article types
    • Manuscript preparation
    • Cover suggestions
    • Editorial process
    • Promoting your paper
    • Open Access
    • Outstanding paper prize
    • Biology Open transfer
  • Journal info
    • Journal policies
    • Rights and permissions
    • Media policies
    • Reviewer guide
    • Sign up for alerts
  • Contacts
    • Contact JEB
    • Subscriptions
    • Advertising
    • Feedback
    • Institutional usage stats (logged-in users only)
Journal Articles
Energy Partitioning in Fish: The Activityrelated Cost of Osmoregulation in a Euryhaline Cichlid
RICARDO FEBRY, PETER LUTZ
Journal of Experimental Biology 1987 128: 63-85;
RICARDO FEBRY
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
PETER LUTZ
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
  • Article
  • Info & metrics
  • PDF
Loading

Summary

We have investigated how the maintenance, net cost of swimming and total (maintenance + net cost of swimming) metabolic rates of red, hybrid tilapia (Oreochromis mossambicus ♀ × O. hornorum ♂) responded to different acclimation salinities, and if these responses correlated with changes in ion-osmoregulation (= osmoregulation) costs.

Three groups of fish were acclimated to either fresh water (FW, 0‰), isosmotic sea water (ISW, 12‰) or full strength sea water (SW, 35 ‰) and oxygen consumption was measured while they swam at 10, 20, 30 and 40cms-1. Maintenance oxygen consumption (estimated by extrapolation), for an average fish (63g), increased among groups in the following order: FW < ISW < SW. The net cost of swimming increased in the order ISW < SW < FW, and total oxygen consumption (maintenance + net cost of swimming) increased in the order ISW < FW < SW.

We assumed that the contribution of cardiac, branchial and swimming muscles to the net cost of swimming was proportional to swimming speed only, and therefore, at similar speeds, differences in the net cost of swimming among salinities were due to changes in the activity-related cost of osmoregulation. Consequently, the order in which the net cost of swimming increases from one group to another is the same as the order in which the cost of osmoregulation increases. Since the sequences for maintenance and total metabolic rates differed from that for the net cost of swimming, salinity-related increases in these rates cannot be attributed exclusively to changes in osmoregulation cost.

We conclude, based on the differences in the net cost of swimming, that osmoregulation in FW is more expensive than in SW, and that it is cheapest in ISW. Although we were not able to estimate the total cost of osmoregulation in FW and SW, we estimated the activity-related cost, relative to the cost in ISW, at different swimming speeds (net cost of swimming in FW or SW minus net cost of swimming in ISW at each speed). For a 63-g fish in FW, this cost increased from zero at rest, to 41mgO2kg−1h−1 (16% of the total metabolic rate, 24% of the net cost swimming) at 40 cms−1. In SW the same cost increased only to 32 mgO2 kg−1h−1 (12% of the total metabolic rate, 20% of the net cost of swimming) at 40cms−1. The net cost of swimming in FW or SW increased with swimming speed at a rate 3×4 times faster

  • © 1987 by Company of Biologists
Previous ArticleNext Article
Back to top
Previous ArticleNext Article

This Issue

 Download PDF

Email

Thank you for your interest in spreading the word on Journal of Experimental Biology.

NOTE: We only request your email address so that the person you are recommending the page to knows that you wanted them to see it, and that it is not junk mail. We do not capture any email address.

Enter multiple addresses on separate lines or separate them with commas.
Energy Partitioning in Fish: The Activityrelated Cost of Osmoregulation in a Euryhaline Cichlid
(Your Name) has sent you a message from Journal of Experimental Biology
(Your Name) thought you would like to see the Journal of Experimental Biology web site.
CAPTCHA
This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.
Share
Journal Articles
Energy Partitioning in Fish: The Activityrelated Cost of Osmoregulation in a Euryhaline Cichlid
RICARDO FEBRY, PETER LUTZ
Journal of Experimental Biology 1987 128: 63-85;
del.icio.us logo Digg logo Reddit logo Twitter logo CiteULike logo Facebook logo Google logo Mendeley logo
Citation Tools
Journal Articles
Energy Partitioning in Fish: The Activityrelated Cost of Osmoregulation in a Euryhaline Cichlid
RICARDO FEBRY, PETER LUTZ
Journal of Experimental Biology 1987 128: 63-85;

Citation Manager Formats

  • BibTeX
  • Bookends
  • EasyBib
  • EndNote (tagged)
  • EndNote 8 (xml)
  • Medlars
  • Mendeley
  • Papers
  • RefWorks Tagged
  • Ref Manager
  • RIS
  • Zotero
Alerts

Please log in to add an alert for this article.

Sign in to email alerts with your email address

Article navigation

  • Top
  • Article
  • Info & metrics
  • PDF

Related articles

Cited by...

More in this TOC section

  • The dynamics and scaling of force production during the tail-flip escape response of the California spiny lobster Panulirus interruptus
  • Comparison of the efficiency of rat papillary muscles during afterloaded isotonic contractions and contractions with sinusoidal length changes
  • Nitric oxide modulates cardiac performance in the heart of Anguilla anguilla
Show more Journal Articles

Similar articles

Other journals from The Company of Biologists

Development

Journal of Cell Science

Disease Models & Mechanisms

Biology Open

Advertisement

Welcome to JEB’s new Editor Monica Daley

We are pleased to welcome Monica Daley to JEB’s Editorial team. Monica has had a long association with JEB before taking up her new role, overseeing peer review of neuromuscular physiology, terrestrial biomechanics and integrative physiology of locomotion.


In the field with Robyn Hetem

Continuing our fieldwork series, Robyn Hetem reflects on working with species ranging from aardvark to zebra, and the impact COVID-19 has had on fieldwork.


Read & Publish participation continues to grow

“It is particularly encouraging for early career researchers, as it allows them to display their research globally without the need to find costs to cover the open access option.”

Professor Fernando Montealegre-Z (University of Lincoln) shares his experience of publishing Open Access as part of our growing Read & Publish initiative. We now have over 150 institutions in 15 countries and four library consortia taking part – find out more and view our full list of participating institutions.


Nocturnal reef residents have deep-sea-like eyes

Fanny de Busserolles and colleagues from The University of Queensland have discovered that the eyes of nocturnal reef fish have multibank retinas, layers of photoreceptors, similar to the eyes of deep-sea fish that live in dim light conditions.


Mechanisms underlying gut microbiota–host interactions in insects

In their Review, Konstantin Schmidt and Philipp Engel summarise recent findings about the mechanisms involved in gut colonisation and the provisioning of beneficial effects in gut microbiota–insect symbiosis.

Articles

  • Accepted manuscripts
  • Issue in progress
  • Latest complete issue
  • Issue archive
  • Archive by article type
  • Special issues
  • Subject collections
  • Interviews
  • Sign up for alerts

About us

  • About JEB
  • Editors and Board
  • Editor biographies
  • Travelling Fellowships
  • Grants and funding
  • Journal Meetings
  • Workshops
  • The Company of Biologists
  • Journal news

For Authors

  • Submit a manuscript
  • Aims and scope
  • Presubmission enquiries
  • Article types
  • Manuscript preparation
  • Cover suggestions
  • Editorial process
  • Promoting your paper
  • Open Access
  • Outstanding paper prize
  • Biology Open transfer

Journal Info

  • Journal policies
  • Rights and permissions
  • Media policies
  • Reviewer guide
  • Sign up for alerts

Contact

  • Contact JEB
  • Subscriptions
  • Advertising
  • Feedback

 Twitter   YouTube   LinkedIn

© 2021   The Company of Biologists Ltd   Registered Charity 277992