Understanding threats and drivers of extinction risk is critical to conserving marine biodiversity. Although marine bony fishes are some of the most diverse and abundant vertebrates in the world, overexploitation is the major threat to these taxa. Species in the family Sciaenidae are important marine resources in many parts of the world, supporting small- and large-scale fisheries for consumption and the international maw (dried swimbladder) trade. Sciaenids exhibit a diverse array of life history characteristics, such as high fecundity, large body size, formation of spawning aggregations, and longevity. Some characteristics increase their susceptibility to anthropogenic stressors. Despite being ecologically and economically important, data regarding species’ population status and ecology are limited. In this study, I evaluated extinction risk for the 286 valid sciaenid species using the International Union for Conservation of Nature Red List methodology and explored impacts of the maw trade. About 10% of sciaenids overall are of elevated concern (EC). The majority were assessed as Least Concern, but data were insufficient to assign an appropriate Red List category for over 25% of species. Compared to non-maw trade species, those used in the trade have a larger proportion of EC species. Overexploitation was the major threat overall, impacting over 150 species. These results highlight the urgent need for additional research into the maw trade, specifically composition of species, status of Data Deficient species, and price data for maw products. This study completes the first comprehensive analysis of the conservation status of Sciaenidae and provides a foundation for future research initiatives.
","abstract_html":"<p>Understanding threats and drivers of extinction risk is critical to conserving marine biodiversity. Although marine bony fishes are some of the most diverse and abundant vertebrates in the world, overexploitation is the major threat to these taxa. Species in the family Sciaenidae are important marine resources in many parts of the world, supporting small- and large-scale fisheries for consumption and the international maw (dried swimbladder) trade. Sciaenids exhibit a diverse array of life history characteristics, such as high fecundity, large body size, formation of spawning aggregations, and longevity. Some characteristics increase their susceptibility to anthropogenic stressors. Despite being ecologically and economically important, data regarding species’ population status and ecology are limited. In this study, I evaluated extinction risk for the 286 valid sciaenid species using the International Union for Conservation of Nature Red List methodology and explored impacts of the maw trade. About 10% of sciaenids overall are of elevated concern (EC). The majority were assessed as Least Concern, but data were insufficient to assign an appropriate Red List category for over 25% of species. Compared to non-maw trade species, those used in the trade have a larger proportion of EC species. Overexploitation was the major threat overall, impacting over 150 species. These results highlight the urgent need for additional research into the maw trade, specifically composition of species, status of Data Deficient species, and price data for maw products. This study completes the first comprehensive analysis of the conservation status of Sciaenidae and provides a foundation for future research initiatives.</p>","abstract_has_math":false,"creators":["Gorman, Claire E."],"institution":null,"degree_name":"Master of Science (MS)","degree_level":"Thesis","degree_discipline":"Biological Sciences","degree_department":null,"school":null,"contributors":["Kent Carpenter","Holly Gaff","Beth Polidoro"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2020,"date_issued":"2020-12-01T08:00:00Z","date_published":"2020-12-01T08:00:00Z","updated_at":"2026-07-24T03:35:38Z","subjects":["conservation","Extinction risk","IUCN Red List","Maw","Sciaenidae","Biodiversity","Biology","Marine Biology","Natural Resources and Conservation"],"languages":[],"rights":["In Copyright. URI: http://rightsstatements.org/vocab/InC/1.0/ This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).
"],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["9798557051552"],"render_values":[{"text":"9798557051552","href":null,"code":true}]}]},"links":{"outbound_url":"https://digitalcommons.odu.edu/biology_etds/116","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Kent Carpenter","Holly Gaff","Beth Polidoro"]},{"key":"dc:creator","label":"Author","values":["Gorman, Claire E."]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.available","label":"Dc Date Available","values":["2022-01-06T08:00:00Z"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Biological Sciences"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science (MS)"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["conservation","Extinction risk","IUCN Red List","Maw","Sciaenidae","Biodiversity","Biology","Marine Biology","Natural Resources and Conservation"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:rights","label":"Dc Rights","values":["In Copyright. URI: http://rightsstatements.org/vocab/InC/1.0/ This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).
"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["9798557051552","https://digitalcommons.odu.edu/biology_etds/116"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Understanding threats and drivers of extinction risk is critical to conserving marine biodiversity. Although marine bony fishes are some of the most diverse and abundant vertebrates in the world, overexploitation is the major threat to these taxa. Species in the family Sciaenidae are important marine resources in many parts of the world, supporting small- and large-scale fisheries for consumption and the international maw (dried swimbladder) trade. Sciaenids exhibit a diverse array of life history characteristics, such as high fecundity, large body size, formation of spawning aggregations, and longevity. Some characteristics increase their susceptibility to anthropogenic stressors. Despite being ecologically and economically important, data regarding species’ population status and ecology are limited. In this study, I evaluated extinction risk for the 286 valid sciaenid species using the International Union for Conservation of Nature Red List methodology and explored impacts of the maw trade. About 10% of sciaenids overall are of elevated concern (EC). The majority were assessed as Least Concern, but data were insufficient to assign an appropriate Red List category for over 25% of species. Compared to non-maw trade species, those used in the trade have a larger proportion of EC species. Overexploitation was the major threat overall, impacting over 150 species. These results highlight the urgent need for additional research into the maw trade, specifically composition of species, status of Data Deficient species, and price data for maw products. This study completes the first comprehensive analysis of the conservation status of Sciaenidae and provides a foundation for future research initiatives.
"]},{"key":"dc:title","label":"Title","values":["Global Conservation Status of Croaker and Drum (Family: Sciaenidae) and Role of the Maw Trade"]}]}],"canonical_facts":{"dc:contributor":["Kent Carpenter","Holly Gaff","Beth Polidoro"],"dc:creator":["Gorman, Claire E."],"dc:date.available":["2022-01-06T08:00:00Z"],"dc:description.abstract":["Understanding threats and drivers of extinction risk is critical to conserving marine biodiversity. Although marine bony fishes are some of the most diverse and abundant vertebrates in the world, overexploitation is the major threat to these taxa. Species in the family Sciaenidae are important marine resources in many parts of the world, supporting small- and large-scale fisheries for consumption and the international maw (dried swimbladder) trade. Sciaenids exhibit a diverse array of life history characteristics, such as high fecundity, large body size, formation of spawning aggregations, and longevity. Some characteristics increase their susceptibility to anthropogenic stressors. Despite being ecologically and economically important, data regarding species’ population status and ecology are limited. In this study, I evaluated extinction risk for the 286 valid sciaenid species using the International Union for Conservation of Nature Red List methodology and explored impacts of the maw trade. About 10% of sciaenids overall are of elevated concern (EC). The majority were assessed as Least Concern, but data were insufficient to assign an appropriate Red List category for over 25% of species. Compared to non-maw trade species, those used in the trade have a larger proportion of EC species. Overexploitation was the major threat overall, impacting over 150 species. These results highlight the urgent need for additional research into the maw trade, specifically composition of species, status of Data Deficient species, and price data for maw products. This study completes the first comprehensive analysis of the conservation status of Sciaenidae and provides a foundation for future research initiatives.
"],"dc:identifier":["9798557051552","https://digitalcommons.odu.edu/biology_etds/116"],"dc:rights":["In Copyright. URI: http://rightsstatements.org/vocab/InC/1.0/ This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).
"],"dc:subject":["conservation","Extinction risk","IUCN Red List","Maw","Sciaenidae","Biodiversity","Biology","Marine Biology","Natural Resources and Conservation"],"dc:title":["Global Conservation Status of Croaker and Drum (Family: Sciaenidae) and Role of the Maw Trade"],"thesis:degree_discipline":["Biological Sciences"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["Master of Science (MS)"]},"updated_at":"2026-07-24T03:35:38Z"}