Fish market surveys indicate unsustainable elasmobranch fisheries in the Saudi Arabian Red Sea

Handle URI:
http://hdl.handle.net/10754/563973
Title:
Fish market surveys indicate unsustainable elasmobranch fisheries in the Saudi Arabian Red Sea
Authors:
Spät, Julia L.Y. ( 0000-0001-8703-1472 ) ; Berumen, Michael L. ( 0000-0003-2463-2742 )
Abstract:
Elasmobranch populations worldwide are severely threatened due to overexploited and unregulated fisheries. Despite the fact that sharks and rays are captured in fisheries operating along the Red Sea coast of the Kingdom of Saudi Arabia (KSA), information on any aspects of these fisheries are very limited. Here we document the structure, composition and biological characteristics of eastern Red Sea elasmobranch fisheries based on genetic identification and market survey data over an intensive two-year sampling period at the biggest Red Sea fish market in the KSA (Jeddah). Market surveys conducted two times per month between 2011 and 2013 revealed that 24 previously confirmed elasmobranch species for the Red Sea were landed by fishers and offered for sale. Genetic identification revealed two potentially undescribed guitarfish species as well as four batoid species not formerly reported from the Red Sea. Five coastal carcharhinid species dominated the landings-. Carcharhinus sorrah, C. amblyrhynchos, C. falciformis, C. limbatus, Rhizoprionodon acutus, together comprising 73% numerically of the total catch. Targeted shark fisheries reportedly exist in shark nursery areas. Most elasmobranchs outside of these areas were reportedly landed as bycatch. Most strikingly, the large majority of landed elasmobranchs were immature males or females below their reported size of sexual maturity, which suggests potential for both growth and recruitment overfishing and emphasizes the urgent need to implement region-specific management and conservation strategies to avoid the loss of these critical predators.
KAUST Department:
Red Sea Research Center (RSRC); Biological and Environmental Sciences and Engineering (BESE) Division; Marine Science Program; Reef Ecology Lab
Publisher:
Elsevier BV
Journal:
Fisheries Research
Issue Date:
Jan-2015
DOI:
10.1016/j.fishres.2014.08.022
Type:
Article
ISSN:
01657836
Sponsors:
This project was supported by KAUST Red Sea Research Center funding to M.L.B.
Appears in Collections:
Articles; Red Sea Research Center (RSRC); Marine Science Program; Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorSpät, Julia L.Y.en
dc.contributor.authorBerumen, Michael L.en
dc.date.accessioned2015-08-03T12:21:29Zen
dc.date.available2015-08-03T12:21:29Zen
dc.date.issued2015-01en
dc.identifier.issn01657836en
dc.identifier.doi10.1016/j.fishres.2014.08.022en
dc.identifier.urihttp://hdl.handle.net/10754/563973en
dc.description.abstractElasmobranch populations worldwide are severely threatened due to overexploited and unregulated fisheries. Despite the fact that sharks and rays are captured in fisheries operating along the Red Sea coast of the Kingdom of Saudi Arabia (KSA), information on any aspects of these fisheries are very limited. Here we document the structure, composition and biological characteristics of eastern Red Sea elasmobranch fisheries based on genetic identification and market survey data over an intensive two-year sampling period at the biggest Red Sea fish market in the KSA (Jeddah). Market surveys conducted two times per month between 2011 and 2013 revealed that 24 previously confirmed elasmobranch species for the Red Sea were landed by fishers and offered for sale. Genetic identification revealed two potentially undescribed guitarfish species as well as four batoid species not formerly reported from the Red Sea. Five coastal carcharhinid species dominated the landings-. Carcharhinus sorrah, C. amblyrhynchos, C. falciformis, C. limbatus, Rhizoprionodon acutus, together comprising 73% numerically of the total catch. Targeted shark fisheries reportedly exist in shark nursery areas. Most elasmobranchs outside of these areas were reportedly landed as bycatch. Most strikingly, the large majority of landed elasmobranchs were immature males or females below their reported size of sexual maturity, which suggests potential for both growth and recruitment overfishing and emphasizes the urgent need to implement region-specific management and conservation strategies to avoid the loss of these critical predators.en
dc.description.sponsorshipThis project was supported by KAUST Red Sea Research Center funding to M.L.B.en
dc.publisherElsevier BVen
dc.subjectGeneticsen
dc.subjectIndian Oceanen
dc.subjectNew species recordsen
dc.subjectRayen
dc.subjectSharken
dc.titleFish market surveys indicate unsustainable elasmobranch fisheries in the Saudi Arabian Red Seaen
dc.typeArticleen
dc.contributor.departmentRed Sea Research Center (RSRC)en
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.contributor.departmentMarine Science Programen
dc.contributor.departmentReef Ecology Laben
dc.identifier.journalFisheries Researchen
dc.contributor.institutionBiology Department, Woods Hole Oceanographic InstitutionWoods Hole, MA, United Statesen
kaust.authorSpät, Julia L.Y.en
kaust.authorBerumen, Michael L.en
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