Possible uses of the developmental embryology of the sea urchin Parechinus angulosus for pollution monitoring in the nearshore marine environment
| dc.contributor.advisor | Brown, Alec C | |
| dc.contributor.author | Greenwood, Peter John | |
| dc.date.accessioned | 2023-02-21T13:33:09Z | |
| dc.date.available | 2023-02-21T13:33:09Z | |
| dc.date.issued | 1980 | |
| dc.date.updated | 2023-01-17T10:52:54Z | |
| dc.description.abstract | The possibility of using the embryological life stages of the common sea urchin Parechinus angulosus for pollution bioassay in the nearshore marine environment. was investigated. Discreet stages of development from freshly spawned gametes. through fertilization. pre-hatch development and post-hatch development to 70 - 80 h pluteus larvae were utilized to determine the effect of a variety of pollutants on subsequent development. Different stages in the developmental ontogeny of the species reflect variable sensitivity to different pollutants. Sensitivity was also shown to be radically modified by variation of temperature, salinity, pollutant type, concentration and exposure period. Generally gametes exposed to stressed conditions prior to fertilization reflected high sensitivity. shown by deviations from the norm in subsequent development. Post-fertilization/pre-hatch development was relatively tolerant of pollutant stress, while post-hatch development showed the greatest sensitivity to abnormal condition. In view of the fact that different stages of development show variable sensitivity to pollutant type, a scheme for routine pollution bioassay is suggested, incorporating all the stages of embryological development. | |
| dc.identifier.apacitation | Greenwood, P. J. (1980). <i>Possible uses of the developmental embryology of the sea urchin Parechinus angulosus for pollution monitoring in the nearshore marine environment</i>. (). ,Faculty of Science ,Department of Biological Sciences. Retrieved from http://hdl.handle.net/11427/36938 | en_ZA |
| dc.identifier.chicagocitation | Greenwood, Peter John. <i>"Possible uses of the developmental embryology of the sea urchin Parechinus angulosus for pollution monitoring in the nearshore marine environment."</i> ., ,Faculty of Science ,Department of Biological Sciences, 1980. http://hdl.handle.net/11427/36938 | en_ZA |
| dc.identifier.citation | Greenwood, P.J. 1980. Possible uses of the developmental embryology of the sea urchin Parechinus angulosus for pollution monitoring in the nearshore marine environment. . ,Faculty of Science ,Department of Biological Sciences. http://hdl.handle.net/11427/36938 | en_ZA |
| dc.identifier.ris | TY - Doctoral Thesis AU - Greenwood, Peter John AB - The possibility of using the embryological life stages of the common sea urchin Parechinus angulosus for pollution bioassay in the nearshore marine environment. was investigated. Discreet stages of development from freshly spawned gametes. through fertilization. pre-hatch development and post-hatch development to 70 - 80 h pluteus larvae were utilized to determine the effect of a variety of pollutants on subsequent development. Different stages in the developmental ontogeny of the species reflect variable sensitivity to different pollutants. Sensitivity was also shown to be radically modified by variation of temperature, salinity, pollutant type, concentration and exposure period. Generally gametes exposed to stressed conditions prior to fertilization reflected high sensitivity. shown by deviations from the norm in subsequent development. Post-fertilization/pre-hatch development was relatively tolerant of pollutant stress, while post-hatch development showed the greatest sensitivity to abnormal condition. In view of the fact that different stages of development show variable sensitivity to pollutant type, a scheme for routine pollution bioassay is suggested, incorporating all the stages of embryological development. DA - 1980_ DB - OpenUCT DP - University of Cape Town KW - Zoology LK - https://open.uct.ac.za PY - 1980 T1 - Possible uses of the developmental embryology of the sea urchin Parechinus angulosus for pollution monitoring in the nearshore marine environment TI - Possible uses of the developmental embryology of the sea urchin Parechinus angulosus for pollution monitoring in the nearshore marine environment UR - http://hdl.handle.net/11427/36938 ER - | en_ZA |
| dc.identifier.uri | http://hdl.handle.net/11427/36938 | |
| dc.identifier.vancouvercitation | Greenwood PJ. Possible uses of the developmental embryology of the sea urchin Parechinus angulosus for pollution monitoring in the nearshore marine environment. []. ,Faculty of Science ,Department of Biological Sciences, 1980 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/36938 | en_ZA |
| dc.language.rfc3066 | eng | |
| dc.publisher.department | Department of Biological Sciences | |
| dc.publisher.faculty | Faculty of Science | |
| dc.subject | Zoology | |
| dc.title | Possible uses of the developmental embryology of the sea urchin Parechinus angulosus for pollution monitoring in the nearshore marine environment | |
| dc.type | Doctoral Thesis | |
| dc.type.qualificationlevel | Doctoral | |
| dc.type.qualificationlevel | PhD |