Selar crumenophthalmus

Selar crumenophthalmus
Name	Bigeye scad
Regnum	Animalia
Phylum	Chordata
Classis	Actinopterygii
Ordo	Carangiformes
Familia	Carangidae
Genus	Selar
Species	S. crumenophthalmus
Binomial	Selar crumenophthalmus
Binomial authority	(Bloch, 1793)

Selar crumenophthalmus is a widely distributed marine fish in the family Carangidae, commonly known as the bigeye scad. It is prominent in tropical and subtropical coastal fisheries and appears in ecological studies, stock assessments, and regional fisheries management plans across the Atlantic, Pacific, and Indian Oceans. Researchers from institutions such as the Smithsonian Institution, CSIRO, FAO, and NOAA have included this species in surveys, while its role in artisanal and commercial fisheries links it to markets in places like Manila, Lagos, and Santos.

Taxonomy and Nomenclature

First described by Marcus Elieser Bloch, the species sits within the order Carangiformes alongside genera studied by ichthyologists at the Natural History Museum, the American Museum of Natural History, and the Royal Society. Taxonomic treatments reference monographs from the Linnean Society and catalogues in the Zoological Society of London. Nomenclatural stability has been maintained through lists used by the International Commission on Zoological Nomenclature and integrated into databases curated by GBIF, FishBase, and OBIS. Regional checklists produced by institutions such as the Smithsonian Tropical Research Institute, CSIRO Publishing, and the Museum national d'Histoire naturelle informed synonyms and historical names recorded in expedition reports from the Challenger expedition and surveys led by DARwin Initiative partners.

Description

The species is characterized by a compressed body, forked caudal fin, and large eyes—traits documented in keys used by the American Fisheries Society and guides by the University of Miami Rosenstiel School of Marine and Atmospheric Science. Morphometric descriptions appear in comparative works from the California Academy of Sciences and the British Museum. Identification features are used in field guides for the Galápagos Islands, the Gulf of Mexico, and the Great Barrier Reef, and morphological data inform phylogenetic analyses published in journals such as Nature, Science, and Proceedings of the Royal Society B. Illustrations and plates are included in atlases produced by Springer and Elsevier.

Distribution and Habitat

Selar crumenophthalmus occurs across tropical and subtropical waters documented in range maps compiled by the IUCN, NOAA Fisheries, and regional bodies such as the Pacific Community and ICES. Its presence is recorded from coastal West Africa to the Caribbean, along the eastern Pacific from California to Peru, and across the Indo-Pacific including the Red Sea, Arabian Sea, and waters around Japan and Australia—areas monitored by institutions like the University of Cape Town, University of the Philippines, and James Cook University. Habitats include coastal pelagic zones, coral reef-associated waters, mangrove fringes, and seamount environs sampled during expeditions by WHOI, Scripps Institution of Oceanography, and the Marine Biological Laboratory.

Biology and Ecology

Life-history traits such as growth, age, and reproduction have been investigated in studies affiliated with CSIRO, NOAA, and academic groups at the University of Queensland and the University of Hawaii. Spawning seasons and fecundity estimates are included in reports by the Food and Agriculture Organization and regional fisheries management organizations like ICCAT and WCPFC. Diet and trophic interactions feature in food-web analyses conducted by the Monterey Bay Aquarium Research Institute and the Max Planck Institute for Marine Microbiology, indicating prey such as copepods and small crustaceans observed in stomach-content studies from expeditions of the R/V Calypso and R/V Investigator. Predators recorded in ecological surveys include larger pelagics sampled by the Tuna Commission, and interactions with apex species are referenced in work by researchers at the Pew Charitable Trusts and Conservation International. Behavioral studies using tagging and acoustic telemetry were undertaken by teams at Woods Hole Oceanographic Institution and Dalhousie University.

Fisheries and Human Use

The species is targeted by artisanal and commercial fleets; catch statistics appear in FAO capture production datasets and national reports from Brazil, Philippines, Indonesia, and Nigeria. Fishers operating from ports such as Iloilo, Cebu, Dakar, and Santos use gear types including purse seines, gillnets, and handlines documented by the World Bank and regional programs supported by the Asian Development Bank. Market pathways link to canneries and processors studied by the International Labour Organization and supply chains analyzed by the World Trade Organization. Product use ranges from fresh markets to preserved products consumed regionally, and post-harvest studies by universities such as Wageningen and Cornell address spoilage, value addition, and food security implications in collaborations with UNICEF and WHO programs.

Conservation and Threats

Conservation assessments incorporate data compiled by the IUCN, UNEP, and national agencies including Australia’s Department of Agriculture, Forestry and Fisheries and Brazil’s ICMBio. Threats include overfishing reported in stock assessments by ICCAT and RFMOs, habitat degradation affecting mangroves and coral reefs monitored by the Convention on Biological Diversity and UNESCO World Heritage sites, and climate-driven changes analyzed in IPCC reports and regional modeling by the European Marine Observation and Data Network. Management measures referenced in policy briefs by the FAO, national ministries, and NGOs such as The Nature Conservancy include catch limits, gear restrictions, and community-based co-management initiatives supported by USAID and GEF-funded projects. Conservation research continues in collaboration with universities, museums, and international agencies to inform sustainable use.

Category:Carangidae