{"id":{"repo_id":"cape-town","oai_identifier":"oai:open.uct.ac.za:11427/12542"},"canonical_url":"https://search.dev.ndltd.org/etd/cape-town/oai:open.uct.ac.za:11427/12542","repository":{"repo_id":"cape-town","name":"University of Cape Town","base_url":"https://open.uct.ac.za/oai/request"},"display":{"title":"Ecophysiology of the black mussel Choromytilus meridionalis (Krauss)","abstract":"The thesis decribes the reproduction, population dynamics and production, filtration, respiration and assimilation of the black mussel Choromytilus meridionalis (Kr.) at Bailey's Cottage, False Bay, South Africa. The reproductive season and gonad development is described from monthly measurements made over a period of 4 years. Spawning usually extends from July to February and is characterised by peaks of gamete release interspersed with regeneration of the gonad. Individual fecundity varies from year to year and increases with increasing body size, representing 61-97% of production. Although large volumes of gamete material are emmitted annually, spat settlement at the study site is only successful at 4 to 6 year intervals. The population dynamics at different shore levels is described in detail.","abstract_html":"The thesis decribes the reproduction, population dynamics and production, filtration, respiration and assimilation of the black mussel Choromytilus meridionalis (Kr.) at Bailey's Cottage, False Bay, South Africa. The reproductive season and gonad development is described from monthly measurements made over a period of 4 years. Spawning usually extends from July to February and is characterised by peaks of gamete release interspersed with regeneration of the gonad. Individual fecundity varies from year to year and increases with increasing body size, representing 61-97% of production. Although large volumes of gamete material are emmitted annually, spat settlement at the study site is only successful at 4 to 6 year intervals. The population dynamics at different shore levels is described in detail.","abstract_has_math":false,"creators":["Griffiths, Roberta Joyce"],"institution":"Department of Biological Sciences","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Field, John G"],"committee_chairs":[],"committee_members":[],"year":1980,"date_issued":"1980","date_published":"1980","updated_at":"2026-07-22T22:23:42Z","subjects":[],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/11427/12542","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Field, John G"]},{"key":"dc:creator","label":"Author","values":["Griffiths, Roberta Joyce"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2015-02-24T04:15:07Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2015-02-24T04:15:07Z"]},{"key":"dc:date.issued","label":"Date","values":["1980"]},{"key":"dc:publisher.department","label":"Dc Publisher Department","values":["Department of Biological Sciences"]},{"key":"dc:publisher.institution","label":"Dc Publisher Institution","values":["University of Cape Town"]},{"key":"dc:type","label":"Dc Type","values":["Doctoral Thesis"]},{"key":"dc:type.qualificationlevel","label":"Dc Type Qualificationlevel","values":["Doctoral"]},{"key":"dc:type.qualificationname","label":"Dc Type Qualificationname","values":["PhD"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["eng"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/11427/12542"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Bibliography: leaves 249-252."]},{"key":"dc:description.abstract","label":"Abstract","values":["The thesis decribes the reproduction, population dynamics and production, filtration, respiration and assimilation of the black mussel Choromytilus meridionalis (Kr.) at Bailey's Cottage, False Bay, South Africa. The reproductive season and gonad development is described from monthly measurements made over a period of 4 years. Spawning usually extends from July to February and is characterised by peaks of gamete release interspersed with regeneration of the gonad. Individual fecundity varies from year to year and increases with increasing body size, representing 61-97% of production. Although large volumes of gamete material are emmitted annually, spat settlement at the study site is only successful at 4 to 6 year intervals. The population dynamics at different shore levels is described in detail."]},{"key":"dc:title","label":"Title","values":["Ecophysiology of the black mussel Choromytilus meridionalis (Krauss)"]}]}],"canonical_facts":{"dc:contributor.advisor":["Field, John G"],"dc:creator":["Griffiths, Roberta Joyce"],"dc:date.accessioned":["2015-02-24T04:15:07Z"],"dc:date.available":["2015-02-24T04:15:07Z"],"dc:date.issued":["1980"],"dc:description":["Bibliography: leaves 249-252."],"dc:description.abstract":["The thesis decribes the reproduction, population dynamics and production, filtration, respiration and assimilation of the black mussel Choromytilus meridionalis (Kr.) at Bailey's Cottage, False Bay, South Africa. The reproductive season and gonad development is described from monthly measurements made over a period of 4 years. Spawning usually extends from July to February and is characterised by peaks of gamete release interspersed with regeneration of the gonad. Individual fecundity varies from year to year and increases with increasing body size, representing 61-97% of production. Although large volumes of gamete material are emmitted annually, spat settlement at the study site is only successful at 4 to 6 year intervals. The population dynamics at different shore levels is described in detail."],"dc:identifier.uri":["http://hdl.handle.net/11427/12542"],"dc:language.iso":["eng"],"dc:publisher.department":["Department of Biological Sciences"],"dc:publisher.institution":["University of Cape Town"],"dc:title":["Ecophysiology of the black mussel Choromytilus meridionalis (Krauss)"],"dc:type":["Doctoral Thesis"],"dc:type.qualificationlevel":["Doctoral"],"dc:type.qualificationname":["PhD"]},"updated_at":"2026-07-22T22:23:42Z"}