Population parameters of the Pacific flagfin mojarra Eucinostomus currani (Perciformes: Gerreidae) captured by shrimp trawling fishery in the Gulf of California
Shrimp trawling fishery in the Gulf of California captures a wide variety of non-target species of fish, crustaceans, and mollusks that are relatively unknown. The Pacific flagfin mojarra Eucinostomus currani is a frequently found species in these catches, nevertheless, nothing is currently known ab...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Vicerractoría Investigación
2011-06-01
|
| Series: | Revista de Biología Tropical |
| Subjects: | |
| Online Access: | http://www.scielo.sa.cr/scielo.php?script=sci_arttext&pid=S0034-77442011000200027&lng=en&tlng=en |
| _version_ | 1797715832511397888 |
|---|---|
| author | Juana López-Martínez Jesús Rodríguez-Romero Norma Y Hernández-Saavedra Eloisa Herrera-Valdivia |
| author_facet | Juana López-Martínez Jesús Rodríguez-Romero Norma Y Hernández-Saavedra Eloisa Herrera-Valdivia |
| author_sort | Juana López-Martínez |
| collection | DOAJ |
| description | Shrimp trawling fishery in the Gulf of California captures a wide variety of non-target species of fish, crustaceans, and mollusks that are relatively unknown. The Pacific flagfin mojarra Eucinostomus currani is a frequently found species in these catches, nevertheless, nothing is currently known about its population dynamics. To contribute to the knowledge on this fish species, we studied the size structure, growth, mortality, and the recruitment pattern during the 2004-2005 seasons. A total of 6 078 mojarra were captured from 350 samples, with minimum and maximum lengths of 4.5cm and a maximum of 21.0cm. The average total length of the four major cohorts was 11.4, 13.7, 15.6 and 18.0cm, corresponding to ages 0.9, 1.2, 1.6 and 2.2 years, respectively, being the most abundant the 1.2 year-old group. The instant growth coefficient indicated moderate growth rates (K S=0.81/year, K E=0.85/year), corresponding to individuals living between 3.5 to 3.7 years. The estimated asymptotic lengths was L∞=21.8cm. In general, the population could be considered healthy: natural mortality (M=1.53/year); total mortality (Z=2.73 /year); condition factor (K=0.01072); fishery mortality (F=1.2/ year) and exploitation rate (E=0.43/year). The maximum reproduction period almost coincided with the closed season for shrimp fishing (March to August), thus we concluded that survival of the species is ensured because reproduction is indirectly protected. Rev. Biol. Trop. 59 (2): 887-897. Epub 2011 June 01. |
| first_indexed | 2024-03-12T08:12:37Z |
| format | Article |
| id | doaj.art-2ef4f609c08f4341afef687431afec86 |
| institution | Directory Open Access Journal |
| issn | 0034-7744 |
| language | English |
| last_indexed | 2024-03-12T08:12:37Z |
| publishDate | 2011-06-01 |
| publisher | Vicerractoría Investigación |
| record_format | Article |
| series | Revista de Biología Tropical |
| spelling | doaj.art-2ef4f609c08f4341afef687431afec862023-09-02T19:05:52ZengVicerractoría InvestigaciónRevista de Biología Tropical0034-77442011-06-01592887897S0034-77442011000200027Population parameters of the Pacific flagfin mojarra Eucinostomus currani (Perciformes: Gerreidae) captured by shrimp trawling fishery in the Gulf of CaliforniaJuana López-Martínez0Jesús Rodríguez-Romero1Norma Y Hernández-Saavedra2Eloisa Herrera-Valdivia3Centro de Investigaciones Biológicas del NoroesteCentro de Investigaciones Biológicas del NoroesteCentro de Investigaciones Biológicas del NoroesteCentro de Investigaciones Biológicas del NoroesteShrimp trawling fishery in the Gulf of California captures a wide variety of non-target species of fish, crustaceans, and mollusks that are relatively unknown. The Pacific flagfin mojarra Eucinostomus currani is a frequently found species in these catches, nevertheless, nothing is currently known about its population dynamics. To contribute to the knowledge on this fish species, we studied the size structure, growth, mortality, and the recruitment pattern during the 2004-2005 seasons. A total of 6 078 mojarra were captured from 350 samples, with minimum and maximum lengths of 4.5cm and a maximum of 21.0cm. The average total length of the four major cohorts was 11.4, 13.7, 15.6 and 18.0cm, corresponding to ages 0.9, 1.2, 1.6 and 2.2 years, respectively, being the most abundant the 1.2 year-old group. The instant growth coefficient indicated moderate growth rates (K S=0.81/year, K E=0.85/year), corresponding to individuals living between 3.5 to 3.7 years. The estimated asymptotic lengths was L∞=21.8cm. In general, the population could be considered healthy: natural mortality (M=1.53/year); total mortality (Z=2.73 /year); condition factor (K=0.01072); fishery mortality (F=1.2/ year) and exploitation rate (E=0.43/year). The maximum reproduction period almost coincided with the closed season for shrimp fishing (March to August), thus we concluded that survival of the species is ensured because reproduction is indirectly protected. Rev. Biol. Trop. 59 (2): 887-897. Epub 2011 June 01.http://www.scielo.sa.cr/scielo.php?script=sci_arttext&pid=S0034-77442011000200027&lng=en&tlng=enmojarra bandera del PacíficoEucinostomus curraniGolfo de Californiafauna acompañante |
| spellingShingle | Juana López-Martínez Jesús Rodríguez-Romero Norma Y Hernández-Saavedra Eloisa Herrera-Valdivia Population parameters of the Pacific flagfin mojarra Eucinostomus currani (Perciformes: Gerreidae) captured by shrimp trawling fishery in the Gulf of California Revista de Biología Tropical mojarra bandera del Pacífico Eucinostomus currani Golfo de California fauna acompañante |
| title | Population parameters of the Pacific flagfin mojarra Eucinostomus currani (Perciformes: Gerreidae) captured by shrimp trawling fishery in the Gulf of California |
| title_full | Population parameters of the Pacific flagfin mojarra Eucinostomus currani (Perciformes: Gerreidae) captured by shrimp trawling fishery in the Gulf of California |
| title_fullStr | Population parameters of the Pacific flagfin mojarra Eucinostomus currani (Perciformes: Gerreidae) captured by shrimp trawling fishery in the Gulf of California |
| title_full_unstemmed | Population parameters of the Pacific flagfin mojarra Eucinostomus currani (Perciformes: Gerreidae) captured by shrimp trawling fishery in the Gulf of California |
| title_short | Population parameters of the Pacific flagfin mojarra Eucinostomus currani (Perciformes: Gerreidae) captured by shrimp trawling fishery in the Gulf of California |
| title_sort | population parameters of the pacific flagfin mojarra eucinostomus currani perciformes gerreidae captured by shrimp trawling fishery in the gulf of california |
| topic | mojarra bandera del Pacífico Eucinostomus currani Golfo de California fauna acompañante |
| url | http://www.scielo.sa.cr/scielo.php?script=sci_arttext&pid=S0034-77442011000200027&lng=en&tlng=en |
| work_keys_str_mv | AT juanalopezmartinez populationparametersofthepacificflagfinmojarraeucinostomuscurraniperciformesgerreidaecapturedbyshrimptrawlingfisheryinthegulfofcalifornia AT jesusrodriguezromero populationparametersofthepacificflagfinmojarraeucinostomuscurraniperciformesgerreidaecapturedbyshrimptrawlingfisheryinthegulfofcalifornia AT normayhernandezsaavedra populationparametersofthepacificflagfinmojarraeucinostomuscurraniperciformesgerreidaecapturedbyshrimptrawlingfisheryinthegulfofcalifornia AT eloisaherreravaldivia populationparametersofthepacificflagfinmojarraeucinostomuscurraniperciformesgerreidaecapturedbyshrimptrawlingfisheryinthegulfofcalifornia |