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Progress on Marine Species IUCN Red List Assessments: Key Challenges and Opportunities

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Progress on Marine Species IUCN Red List Assessments: Key Challenges and Opportunities Progress on Marine Species IUCN Red List Assessments: Key Challenges and Opportunities Megan van der Bank, Kerry Sink and Domitilla Raimondo [email protected] What are the priority species? Harvested taxa Endemic taxa Distribution limited to southern Africa Threatened by alien species Sensitive species (life history, recovery) Focus on line fish and invertebrates What does red listing entail? Risk of extinction- where extinction = loss of role in the ecosystem 101 Current state of marine species assessments 52 5 Invertebrates = 0 Other methods for assessing species population health 52 25 Number of harvested species= 638 Challenges Data Tools Foundational life history knowledge Taxonomy Data Variability Mean monthly CPUE by number and mass for (a) P. commersonnii and (b) A. japonicus for eight estuaries combined, January 1996–April 1997 DAFF National Marine Linefish System Long-term datasets (3 generations or 10 years) Standardization (fishing technique, effort, gear, Beach-seine targeting, environmental drivers, habitat, uncertainty) Trawl Small scale A modelling approach using standardized CPUE data derived from the DAFF National Marine Linefish Database used to evaluate estimated and predicted trends in Recreational population size Tools Stock assessments Fishery dependent VS Fishery independent Catch reports data Type of assessment Data needs Index of abundance (often Age structured production model CPUE), total catch, catch at size and age-length key Index of abundance and total Production model catch Remote underwater video Catch at size data, age-length Per recruit models key, an estimate of natural mortality Standardised CPUE time series CPUE over time Standardized angling Foundational life history knowledge At what age Generation length does the fish Gonochorists vs. hermaphrodites reach maturity? Johnius dorsalis (small kob) Lethrinus crocineus (yellow emperor) How many fish Does the fish What is the die of natural Lethrinus nebulosus (blue emperor) change sex and relationship causes per at what age? between length and weight? year? Taxonomy Taxonomy Lumping and data resolution Squalus mahia Squalus margaretmithae The story of dusky kob Threats= fishing and estuarine degradation SB/R = 1.0–4.5% of pristine Genetic work= bottlenecking Severe continuing decline (70-80 %) Opportunities and Way forward? 139 line fish species ID guide offshore Species checklists (35 checklists, 9 507 profiles invertebrates (8 taxonomic species) Life history groups) Species pages (336 species pages) Ecology Covers 410 species and led http://seakeys.sanbi.org/search/node Population status to discovery of 20 new Species identification guides species Thank you Past methods for assessing species population health Applications of the Red List NEMBA: Threatened and Protected Convention on International Trade in Species (TOPS) Endangered Species of Wild Fauna and Flora (CITES) Protected: Indigenous species, high Appendix I: species threatened with conservation value or national extinction. Trade only in exceptional importance, require national circumstances. protection Appendix II: species not necessarily Vulnerable: Indigenous species facing threatened with extinction, trade a high risk of extinction in the in the must be controlled to avoid utilization medium-term future incompatible with their survival. Endangered: Indigenous species facing Appendix III: species that are a high risk of extinction in the in the protected in at least one country, near future which has asked other CITES Parties Critically Endangered: Indigenous for assistance in controlling the trade. species facing an extremely high risk of extinction in the immediate future .
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    SPARIFORMES · 1 The ETYFish Project © Christopher Scharpf and Kenneth J. Lazara COMMENTS: v. 4.0 - 13 Feb. 2021 Order SPARIFORMES 3 families · 49 genera · 283 species/subspecies Family LETHRINIDAE Emporerfishes and Large-eye Breams 5 genera · 43 species Subfamily Lethrininae Emporerfishes Lethrinus Cuvier 1829 from lethrinia, ancient Greek name for members of the genus Pagellus (Sparidae) which Cuvier applied to this genus Lethrinus amboinensis Bleeker 1854 -ensis, suffix denoting place: Ambon Island, Molucca Islands, Indonesia, type locality (occurs in eastern Indian Ocean and western Pacific from Indonesia east to Marshall Islands and Samoa, north to Japan, south to Western Australia) Lethrinus atkinsoni Seale 1910 patronym not identified but probably in honor of William Sackston Atkinson (1864-ca. 1925), an illustrator who prepared the plates for a paper published by Seale in 1905 and presumably the plates in this 1910 paper as well Lethrinus atlanticus Valenciennes 1830 Atlantic, the only species of the genus (and family) known to occur in the Atlantic Lethrinus borbonicus Valenciennes 1830 -icus, belonging to: Borbon (or Bourbon), early name for Réunion island, western Mascarenes, type locality (occurs in Red Sea and western Indian Ocean from Persian Gulf and East Africa to Socotra, Seychelles, Madagascar, Réunion, and the Mascarenes) Lethrinus conchyliatus (Smith 1959) clothed in purple, etymology not explained, probably referring to “bright mauve” area at central basal part of pectoral fins on living specimens Lethrinus crocineus
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