Skip to main content

Free Content Electrolyte Composition of Anguilliform Leptocephali from the Straits of Florida

Download Article:
 Download
(PDF 1102.7958984375 kb)
 
Premetamorphic, anguilliform leptocephalous larvae were analyzed for total body content of water, nitrogen, and minerals. Sodium chloride of unusually high concentration is the major inorganic electrolyte of the leptocephalous body. Internal salinity and osmolality of small larvae closely approach the values for sea water. Ionic regulation and the development of an osmotic concentration gradient between body fluids and sea water are evident in large leptocephali near to metamorphosis. We suggest that the newly hatched leptocephalus is capable of minimal ionic regulation and only gradually develops the capacity to maintain the composition of its internal environment distinctly different from sea water. A prolonged period for maturation of osmoregulatory processes may be a physiologic feature that distinguishes the leptocephalus from other larval teleostean fishes.

15 References.

No Supplementary Data.
No Article Media
No Metrics

Document Type: Research Article

Publication date: 1972-06-01

More about this publication?
  • The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • Terms & Conditions
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more