Pressure and temperature effects on planktonic stages of benthic invertebrates with regard to their potential for invasion of the deep sea
Pressure and temperature effects on planktonic stages of benthic invertebrates with regard to their potential for invasion of the deep sea
This thesis investigates the embryonic and larval responses to changes in hydrostatic pressure and temperature in four species of shallow-water invertebrates.
Chapters 2 and 3 describe the results obtained for echinoid species. Results from Psammechinus miliaris are similar to previous work on echinoids. Despite the negative effects of hydrostatic pressures and low temperatures on embryonic development, larvae of Psammechinus miliaris were able to tolerate hydrostatic pressure and temperatures conditions that prevail far beyond the depth limit of the adult. Differences in temperature/pressure effects on dispersal stages between a northern and a southern population of Echinus esculentus were also investigated. The results suggest that the northern population is better adapted to low temperature.
Chapter 4 and 5 focus on Patellidae (Gastropoda) species. Increasing hydrostatic pressure and low temperature had strong negative effects on trochophores of Patella vulgata and Patella ulyssiponensis. These results do not conform to previous results in this field and show that many more taxonomic groups need to be investigated before we know how widespread, among shallow-water invertebrates, is the physiological potential for larval migration into deep sea. The implications of larval temperature tolerances for latitudinal distributions are also discussed.
University of Southampton
Aquino-Souza, Rosana
ecd4b087-cfa5-4aac-b9d7-8a89a5880e7a
2006
Aquino-Souza, Rosana
ecd4b087-cfa5-4aac-b9d7-8a89a5880e7a
Aquino-Souza, Rosana
(2006)
Pressure and temperature effects on planktonic stages of benthic invertebrates with regard to their potential for invasion of the deep sea.
University of Southampton, Doctoral Thesis.
Record type:
Thesis
(Doctoral)
Abstract
This thesis investigates the embryonic and larval responses to changes in hydrostatic pressure and temperature in four species of shallow-water invertebrates.
Chapters 2 and 3 describe the results obtained for echinoid species. Results from Psammechinus miliaris are similar to previous work on echinoids. Despite the negative effects of hydrostatic pressures and low temperatures on embryonic development, larvae of Psammechinus miliaris were able to tolerate hydrostatic pressure and temperatures conditions that prevail far beyond the depth limit of the adult. Differences in temperature/pressure effects on dispersal stages between a northern and a southern population of Echinus esculentus were also investigated. The results suggest that the northern population is better adapted to low temperature.
Chapter 4 and 5 focus on Patellidae (Gastropoda) species. Increasing hydrostatic pressure and low temperature had strong negative effects on trochophores of Patella vulgata and Patella ulyssiponensis. These results do not conform to previous results in this field and show that many more taxonomic groups need to be investigated before we know how widespread, among shallow-water invertebrates, is the physiological potential for larval migration into deep sea. The implications of larval temperature tolerances for latitudinal distributions are also discussed.
Text
1238412.pdf
- Version of Record
More information
Published date: 2006
Identifiers
Local EPrints ID: 466644
URI: http://eprints.soton.ac.uk/id/eprint/466644
PURE UUID: 344402f2-1f2d-49f1-ba1e-8486e65e8353
Catalogue record
Date deposited: 05 Jul 2022 06:12
Last modified: 16 Mar 2024 20:49
Export record
Contributors
Author:
Rosana Aquino-Souza
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics