Eucinostomus gula 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Actinopterygii Perciformes Gerreidae

Scientific Name: Eucinostomus gula (Quoy & Gaimard, 1824)
Regional Assessments:
Common Name(s):
English Silver Jenny, Common mojarra, Jenny mojarra, Shad, Silver mojarra
French Blanche espagnole, Mord-pointu, Petite bouche, Petite gueule
Spanish Blanquilla, Española, Mojarra, Mojarra de ley, Mojarra española, Mojarra ley, Mojarrita, Mojarrita espanola, Mojarrita española
Diapterus homonymus Goode & Bean, 1880
Eucinostomus gulula Poey, 1875
Gerres gula Quoy & Gaimard, 1824

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2015
Date Assessed: 2010-03-01
Assessor(s): Fraser, T. & Gilmore, G.
Reviewer(s): Cox, N.A.
Contributor(s): McEachran, J.D. & Collette, B.
Facilitator/Compiler(s): Hines, A. & Strongin, K.
This widely distributed species is common and abundant in many areas of its distribution, especially where it occurs in seagrass, reef and mangrove habitats. There is evidence for localized population declines in areas where seagrasses have declined and potential threats include recruitment loss due to non-selective fishing gear (bycatch) and habitat loss due to coastal development. However, these are not considered to be major overall threats. Therefore, it is listed as Least Concern.

Geographic Range [top]

Range Description:Eucinostomus gula is distributed in the western Atlantic from New Jersey south along the U.S. coast, Bermuda, the Bahamas, throughout the Gulf of Mexico and Caribbean Sea, and along the Central and South American coast from Quintana Roo, Mexico to Argentina (McEachran and Fechhelm 2005).
Countries occurrence:
Anguilla; Antigua and Barbuda; Argentina; Aruba; Bahamas; Barbados; Belize; Bermuda; Bonaire, Sint Eustatius and Saba (Saba, Sint Eustatius); Brazil; Cayman Islands; Colombia; Costa Rica; Cuba; Curaçao; Dominica; Dominican Republic; French Guiana; Grenada; Guadeloupe; Guatemala; Guyana; Haiti; Honduras; Jamaica; Martinique; Mexico; Montserrat; Nicaragua; Panama; Puerto Rico; Saint Barthélemy; Saint Kitts and Nevis; Saint Lucia; Saint Martin (French part); Saint Vincent and the Grenadines; Sint Maarten (Dutch part); Suriname; Trinidad and Tobago; Turks and Caicos Islands; United States; Uruguay; Venezuela, Bolivarian Republic of; Virgin Islands, British; Virgin Islands, U.S.
FAO Marine Fishing Areas:
Atlantic – western central; Atlantic – northwest; Atlantic – southwest
Additional data:
Lower depth limit (metres):55
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:This species is generally common, and is very abundant when it occurs in seagrass beds. It is one of the two most abundant species that inhabits Brazilian sandy shores (Zahorcsak et al. 2000). It is common, abundant and a characteristic species in the estuarine area of Rio Champoton in southeastern Mexico and in Ria Lagartos, on the northeastern Yucatan Peninsula (Peralta-Meixueiro and Vega-Cendejas 2011). It was among the top eight abundant species with a percent frequency occurrence of 28.70, mean density of 28.72 (number ha -1), and standard deviation of 76.84 on Freeport Rocks Bathymetric High (FRBH), a drowned barrier island in the inner continental shelf on the northwestern Gulf of Mexico (Wells et al. 2009). It was the most abundant mojarra species recorded in seagrass habitat and occurred in 77% of collections in a study of the Indian River Lagoon (Florida) (Gilmore 1995). Several studies have documented instances where loss of seagrass beds have caused the absence of this species, one such case occurred in the Indian River Lagoon.
Current Population Trend:Unknown
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:This species is highly dependent on seagrass beds and reefs, but is also found in mangrove lined lagoons, vegetated sand grounds and may enter freshwater in limestone regions (Gines and Cervigón 1967, Robins and Ray 1986, Peralta-Meixueiro and Vega-Cendejas 2011). Juveniles may spend the cooler months of the year in offshore waters between nine to 24 m depth (McEachran and Fechhelm 2005). Larvae are most common in inner areas of estuaries in the summer (Ramirez-Villaroel 1994, Godefroid et al. 2001). It is a benthic forager that uses its highly protrusible mouth to feed on infaunal invertebrates, primarily bivalves, crustaceans, ostracods and amorphous debris (Kerschner et al. 1985, Branco et al. 1997). It may form aggregations (Randall and Vergara 1978). Its maximum size is 23 cm TL, but is common to 15 cm (Randall and Vergara 1978, Cervigón et al. 1992). It spawns between April to August with a peak in April. Sexual maturity occurs between 6-16 cm FL with a mean size at maturity of 11 cm for females and 11.2 cm for males in the Celestun, Yucatan (Mexicano-Cintora 1999).
Systems:Freshwater; Marine

Use and Trade [top]

Use and Trade: This species is commonly used for bait and is occasionally consumed by humans. It is a "highly commercial" and abundant species in Baía da Babitonga, a subtropical estuary on the northern Santa Catarina State coast in southern Brazil (Vilar et al. 2011).

Threats [top]

Major Threat(s): There are no substantial threats to this species at present. In some parts of its range, the loss of seagrass beds have greatly reduced occurrence of this mojarra; habitat loss may also be of concern in the future with continued loss of estuaries and seagrass areas. It can frequently occur in small mesh shrimp fisheries of Celestun Lagoon, Mexico. It was recommended that this fishery use larger mesh size (2.5 cm) and that fishing be restricted during the nortes season in order to minimize the amount of discarded fauna in this lagoon (Burgos-Leon et al. 2009).

Conservation Actions [top]

Conservation Actions: There are no species-specific conservation measures in place. There are several Federal and State initiatives to protects the seagrass habitat of this species. It is abundant in the Ria Lagartos National Wildlife Refuge. This coastal lagoon has been protected by the Mexican Government since 1979, is on the list of Wetlands of International Importance, and is a protected Special Biosphere Reserve in which human activities are limited (Peralta-Meixueiro and Vega-Cendejas 2011).

Citation: Fraser, T. & Gilmore, G. 2015. Eucinostomus gula. The IUCN Red List of Threatened Species 2015: e.T185995A1800886. . Downloaded on 15 October 2018.
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