Studies of the age, growth, sexual maturity and spawning of populations of anchoveta (Cetengraulis mysticetus) of the coast of the Eastern Tropical Pacific Ocean

Barrett, Izadore and Howard, Gerald V. (1961) Studies of the age, growth, sexual maturity and spawning of populations of anchoveta (Cetengraulis mysticetus) of the coast of the Eastern Tropical Pacific Ocean. Inter-American Tropical Tuna Commission Bulletin, 5(2), pp. 113-216.

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Abstract

ENGLISH: Three hundred and twenty-six collections of anchoveta (Cetengraulis mysticetus), an important tuna bait species, taken between April 1951 and April 1960 from seven major baiting areas in the Eastern Tropical Pacific Ocean (Almejas Bay, Guaymas, Ahome Point, Banderas Bay, Gulf of Fonseca, coast of Colombia and Ecuador-Peru) are the basis of this study of age, growth, sexual maturity and spawning. The study of the temporal progression of modal size groups from plots of monthly length-frequency distributions provided estimates of age and rate of growth. The study of sexual maturity and time of spawning was based on gross examination of ovaries, and application of the gonad index. SPANISH: Trescientas veintiseis recolecciones de anchovetas (Cetengraulis mysticetus), una importante especie de carnada para la pesca del atún, cogidas entre abril de 1951 y abril de 1960 en siete de las mayores áreas de pesca de peces de carnada en el Océano Pacífico Oriental Tropical (Bahía de Almejas, Guaymas, Punta Ahome, Bahía Banderas, Golfo de Fonseca, y las costas de Colombia y de Ecuador- Perú), sirven de base a este estudio de la edad, crecimiento, madurez sexual y desove de dicha especie. El estudio de la progresión temporal de los grupos de tamaños modales según los gráficos de las distribuciones de la frecuencia de las longitudes proporcionó estimaciones de la edad y de la tasa de crecimiento. La investigación de la madurez sexual y la época de desove se basó en el examen macroscópico de los ovarios y en la aplicación del índice de gónadas.

Item Type: Article
Title: Studies of the age, growth, sexual maturity and spawning of populations of anchoveta (Cetengraulis mysticetus) of the coast of the Eastern Tropical Pacific Ocean
Personal Creator/Author:
CreatorsEmail
Barrett, Izadore
Howard, Gerald V.
Journal or Publication Title: Inter-American Tropical Tuna Commission Bulletin
Volume: 5
Number: 2
Page Range: pp. 113-216
Date: 1961
Issuing Agency: Inter-American Tropical Tuna Commission
Additional Information: This article is bilingual and contains both Spanish and English translations.
Uncontrolled Keywords: age; growth; sexual maturity; spawning; anchoveta; Cetengraulis mysticetus; edad; crecimiento; madurez sexual; desove
Subjects: Fisheries
Biology
Item ID: 2448
Depositing User: Joan Parker
Date Deposited: 16 Jul 2009 16:35
Last Modified: 29 Sep 2011 19:04
URI: http://aquaticcommons.org/id/eprint/2448

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