Skip to main content

Temperature sensitivity of skeletal ontogeny in Oreochromis mossambicus

Buy Article:

$51.00 plus tax (Refund Policy)

Abstract:

Sensitivity of skeletal ontogenesis to temperature was assessed in Mozambican tilapia Oreochromis mossambicus and culture temperature manipulations (22, 27 and 32° C) were used to establish if age or length gave the most suitable metric for standardization. Oreochromis mossambicus larval growth was composed of two growth stanzas: an initial period of rapid growth, followed by a slower growth phase. Irrespective of culture temperature chondrogenesis occurred during the first rapid growth phase and ossification was initiated during the second slower growth phase. The sequence of events and rate at which ossification occurred was much more sensitive to temperature than chondrogenesis. Cumulative counts provide a useful developmental index for skeletal ontogenesis; overall, age (effective days‐degrees) gave the best estimation of developmental status during chondrogenesis and the initiation of ossification, although standard length (as log10LS) was a better metric for completion of ossification. The timing of development of functionally important structures, such as Meckel's cartilage, the branchial arches, the centra and the cleithrum important for breathing, feeding and swimming, was well conserved at all temperatures and may be a good index of teleost developmental stages.

Keywords: Oreochromis mossambicus; bone; cartilage; heterochrony; skeletal ontogeny; temperature

Document Type: Regular Paper

DOI: https://doi.org/10.1111/j.0022-1112.2004.00505.x

Affiliations: 1: Centro de Ciências do Mar (CCMar), Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal and 2: Department of Biochemistry and Biotechnology, University of Thessaly, 26 Ploutonos Street, 41221 Larissa, Greece

Publication date: 2004-10-01

  • 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