A study of the age, growth, sexual maturity, and spawning of the anchoveta, Cetengraulis mysticetus, in the Gulf of Panama

Howard, Gerald V. and Landa, Antonio (1958) A study of the age, growth, sexual maturity, and spawning of the anchoveta, Cetengraulis mysticetus, in the Gulf of Panama. Inter-American Tropical Tuna Commission Bulletin, 2(9), pp. 389-467.

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Abstract

ENGLISH: Crew members of tuna clippers and Commission personnel are collecting specimens of anchovetas (Cetengraulis mysticetus) for studies of the biology of this important tuna-bait species. More than 27,000 fish from 231 collections captured in the Gulf of Panama between June 1951 and January 1956 are the basis of this study of the age, growth, sexual maturity, and spawning season of this species in that area. Estimates of age and rate of growth were made by studying the temporal progression of modal size groups from monthly length frequency distributions. Sexual development and time of spawning were determined from gross examination of ovaries and measurements of ovarian eggs. SPANISH: Con el fin de estudiar la biología de la anchoveta (Cetengraulis mysticetus) los tripulantes de los barcos atuneros y el personal de la Comisión están recolectando especimenes de esta importante especie de carnada para capturar el atún. Mas de 27,000 ejemplares de las 231 colecciones hechas en el Golfo de Panamá entre junio de 1951 y enero de 1956, sirven de material al presente estudio sobre la edad, el crecimiento, la madurez sexual y las épocas de desove de esta especie en el área indicada. Las estimaciones de la edad y de la proporción del crecimiento fueron hechas a base del estudio de la progresión temporal de los grupos modales de tamaño en las distribuciones mensuales de frecuencias de longitud. El desarrollo sexual y el periodo de desove fueron determinados mediante el examen microscópico de los ovarios y las mediciones de los huevos ováricos. (PDF contains 79 pages.)

Item Type: Article
Title: A study of the age, growth, sexual maturity, and spawning of the anchoveta, Cetengraulis mysticetus, in the Gulf of Panama
Personal Creator/Author:
CreatorsEmail
Howard, Gerald V.
Landa, Antonio
Journal or Publication Title: Inter-American Tropical Tuna Commission Bulletin
Volume: 2
Number: 9
Page Range: pp. 389-467
Date: 1958
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; Gulf of Panama; la edad; el crecimiento; la madurez sexual; el desove; la anchoveta; el Golfo de Panamá
Subjects: Fisheries
Item ID: 2996
Depositing User: Joan Parker
Date Deposited: 10 Mar 2010 12:32
Last Modified: 29 Sep 2011 18:08
URI: http://aquaticcommons.org/id/eprint/2996

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