Some features of the autecology and distribution of chaetognatha in the Eastern Tropical Pacific

Sund, Paul N. (1961) Some features of the autecology and distribution of chaetognatha in the Eastern Tropical Pacific. Inter-American Tropical Tuna Commission Bulletin, 5(4), pp. 305-340.

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Abstract

ENGLISH: The Inter-American Tropical Tuna Commission, in cooperation with the Tuna Oceanography Research program of the Scripps Institution of Oceanography, is studying in the Eastern Tropical Pacific Ocean methods of identifying waters of different characteristics that may influence the distribution and behavior of the tropical tunas. One method of attacking the problem has been to attempt to use zooplankton species as biological indicators of water masses. It has been demonstrated that certain zooplankters have ecological affinities that make them useful for identifying and tracing the movements of water masses. In the Eastern Pacific Ocean, Bieri (1957), Lea (1955), Le Brasseur (1959), Sund (1959), and Sund and Renner (1959) have presented evidence that certain species of Chaetognatha possibly can serve as indicators. The present work reports on a study of the distributions of species of Chaetognatha, obtained from various depths by means of horizontal closing-net hauls, in relation to concurrent measurements of temperature, salinity, and dissolved oxygen. Analyses of these data have provided a basis for determining which species are of potential use as biological indicators within the area of the Eastern Pacific considered in this study. SPANISH: La Comisión Interamericana del Atún Tropical, en cooperación con el programa de la "Tuna Oceanography Research" de la Institución Scripps de Oceanografía, viene estudiando en el Océano Pacífico Oriental Tropical métodos para identificar aguas de características diferentes que podrían influir en la distribución y en el comportamiento de los atunes tropicales. Uno de los métodos para abordar el problema ha sido el de intentar la utilización de especies zooplanctónicas como índices biológicos de masas de agua. Se ha demostrado que ciertos organismos del zooplancton tienen afinidades ecológicas, merced a las cuales son útiles para identificar y trazar los movimientos de las masas de agua. Bieri (1957), Lea (1955), Le Brasseur (1959), Sund (1959) y Sund y Renner (1959) presentaron evidencia de que ciertas especies de quetognatos pueden servir, posiblemente, como tales índices en el Océano Pacífico Oriental. El presente trabajo informa sobre un estudio de la distribución de las especies de quetognatos obtenidos de distintas profundidades por medio de la red de plancton que se cierra en lanzamientos horizontales y en relación con mediciones concomitantes de la temperatura, la salinidad y el oxígeno disuelto. El análisis de estos datos ofreció una base para la determinación de las especies que son potencialmente aptas para ser usadas como índices biológicos dentro del área del Pacífico Oriental a la cual se refiere este estudio.

Item Type: Article
Title: Some features of the autecology and distribution of chaetognatha in the Eastern Tropical Pacific
Personal Creator/Author:
CreatorsEmail
Sund, Paul N.
Journal or Publication Title: Inter-American Tropical Tuna Commission Bulletin
Volume: 5
Number: 4
Page Range: pp. 305-340
Date: 1961
Issuing Agency: Inter-American Tropical Tuna Commission
Additional Information: This article is bilingual and contains both Spanish and English translations.
Uncontrolled Keywords: autecology; chaetognatha; Eastern Tropical Pacific Ocean; autoecologia; quetognatos; Océano Pacífico Oriental Tropical
Subjects: Biology
Item ID: 2454
Depositing User: Joan Parker
Date Deposited: 18 Jul 2009 20:19
Last Modified: 29 Sep 2011 19:04
URI: http://aquaticcommons.org/id/eprint/2454

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