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Uniciencia
Article . 2001
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Fecundidad de la anchoveta Cetengraulis mysticetus (pisces: engraulidae) en la población de la parte interna del Golfo de Nicoya, Costa Rica.

Authors: Ruiz G., Kehrson; Rodríguez, Jorge Arturo; Soto R., Rosa L.;

Fecundidad de la anchoveta Cetengraulis mysticetus (pisces: engraulidae) en la población de la parte interna del Golfo de Nicoya, Costa Rica.

Abstract

La anchoveta Cetengraulis mysticetus es utilizada como carnada por la flota pesquera artesanal tradicional. Se estudiaron sus aspectos reproductivos durante los picos de desove de 1997 y 1998. La talla reproductiva en esa época se estimó en 14,6 cm y la proporción sexual fue de 1:1,2 (machos: hembras). En el análisis de fecundidad, se encontraron hembras maduras entre las tallas de 16,2 y 21,3 cm de longitud. La fecundidad relativa varió del 1,867 oocitos por gramo de pez en el grupo de tallas superiores a 921 oocitos por gramo de pez en el grupo de menor talla. La relación entre el número de oocitos y la talla del pez fue para la fecundidad total de 1,10 *LT4,55 y para la fecundidad relativa de 0,17 * PT1,19. Los índices gonadosomáticos fueron calculados para machos y hembras en los diferentes estadios de madurez, obteniéndose los valores máximos en el estadio IV, siendo a la vez mayores en machos que en hembras.

The anchovy Cetengraulis mysticetus is used as bait by the artisanal fishing fleet. Some reproductive aspects were studied during the spawns of 1997 and 1998. The size of the first maturity for that time was estimated at 14,6 cm and sexual proportion of 1:1.2 (males: females) was found. The fecundity study yielded mature females of sizes between 16.2 and 21.3 cm of total length. Relative fecundity varied from 1,867 eggs per gram of fish in the bigger fish to 921 eggs per gram of fish in the group of smaller size. The relation between number of eggs and fish size yielded a total fecundity of 0.10 * LT4.55 while the relative fecundity was 0.17 * PT1.19 (PT = total weight). The gonadosomatic index was calculated for males and females in different maturity stages. The maximum values were obtained in the stage IV and were bigger in males than in females.

Universidad Nacional, Costa Rica

Escuela de Ciencias Biológicas

Country
Costa Rica
Related Organizations
Keywords

POBLACIÓN, Science (General), Science, Q, PISCES: ENGRAULIDAE, anchoveta, GOLFO DE NICOYA, Fecundidad, Cetengraulis mysticetus, Q1-390, FECUNDIDAD, CETENGRAULIS MYSTICETUS, FERTILITY, COSTA RICA, POPULATION, ANCHOVETA

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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