Stations cotières et station Vridi: exploitation des données des années 1984 et 1985

Along the Ivorian seaboard we have seven (7) stations where sea water temperature is measured every morning between 7:30 and 8:00. The hydrologic station of Vridi located at point A (5°05N, 4°05W) is generally exploited twice a week. In this report we are going to deal with data collected in 1984 and 1985. The irregularity of the dynamic height at point A enables us to identify water masses that go over the continental plateau.

Soundings: the Newsletter of the Monterey Bay Chapter of the American Cetacean Society. 1990

(PDF contains 118 pages.)

Anuario Estadistico de Pesca 1990

This document is in Spanish. El capítulo 1, se conforma por un conjunto de cuadros referidos a los resultados que se obtuvieron en la fase primaria del circuito productivo, es decir, la producción derivada de las capturas y de la acuacultura practicadas con fines comerciales. Las variables de producción consignadas se refieren a las di-mensiones más representativas de la actividad: volumen y valor de la producción por especies, producción por tipo de destino, por sectores productivos, por litoral y entidad federativa y por principales Oficinas de Pesca. Este capítulo se concluye presentando un grupo de cuadros sobre la produccion proveniente de la acuacultura, ademis de algunas series historicas referidas al comportamiento de las principales pesquerías y de la produccion nacional en su conjunto. Enseguida -Capítulo 11-, se da a conocer la informaci6n relativa a la industrializaci6n de la produccion pesouera, destacando las variables referidas a la materia prima procesada, producto obtenido y principales procesos industriales, esto es, el congelado, enlatado, reducci6n y otros procesos. En el Capítulo 111, se presentan las estadísticas sobre la comercializacion interna y externa de productos pesqueros. De modo que, aquí se expresan variables tales como el consumo aparente y per cipita, disponibilidad interna de productos pesqueros, precios y la Balanza Comercial Pesquera, entre -las mas importantes. El Capítulo IV, da cabida a la informacion sobre los factores de la produccion. Es decir, en esta parte del Anuario se concentra la informacion relativa a los acervos de capital -activos pesqueros-, fuerza de trabajo y financiamiento. Por último, el Capítulo V recoge informacion pesquera de caracter internacional, con el proposito de ubicar la participacion de nuestro país en el concierto mundial de la pesca. Destacan aquí agregados como la producci6n, industrializaci6n, comercializaci6n y consumo de productos pesqueros. Catch statistics for Mexican waters 1990. (PDF has 110 pages.)

Maturation of Nineteen Species of Finfish off the Northeast Coast of the United States, 1985-1990

Observations on maturation stages of nineteen species of economically important finfish off the Northeast coast of the USA were analyzed to examine relationships between fish size or age, and maturity. Maturation schedules and median lengths (L50) and ages (A50) at maturation were derived by fitting the logistic model to the observed proportions. Analyses were generally restricted to observations from 1985 to 1990 obtained during stratified random bottom trawl surveys conducted in spring and autumn by the Northeast Fisheries Science Center and the Commonwealth of Massachusetts Division of Marine Fisheries in waters of the continental shelf from Nova Scotia to Cape Hatteras, North Carolina. Butterfish, Peprilus triacanthus, attained sexual maturity at the smallest median length (11.4 cm, males) and pollock, Pollachius virens, at the highest (41.8 em, males). Median length at maturity for gadiforms ranged from 22.2 to 41.8 em. Within the pleuronectiforms, median length at maturity ranged from 19.1 to 30.4 cm. Median lengths for the pelagic and miscellaneous demersal species were in the same ranges as the pleuronectiforms. Butterfish also attained sexual maturity at the youngest median age (0.9 yr, both sexes) whereas redfish, Sebastes fasciatus, were the latest to mature (5.5 yr, both sexes). For gadids, the median age at maturity ranged from 1.3 to 2.3 yr. Within the pleuronectiforms, median age at maturity ranged from 1.3 to 4.4 yr and, for pelagic species, from 0.9 to 3.0 yr. Median lengths and ages for many species are lower than those reported in earlier studies of the same general region of the Northwest Atlantic. (PDF file contains 72 pages.)

Control of Disease in Aquaculture: Proceedings of the Nineteenth U.S.-Japan Meeting on Aquaculture, Ise, Mie Prefecture, Japan, 29-30 October 1990, Satellite Symposium: 2 November

The United States and Japanese counterpart panels on aquaculture were formed in 1969 under the United States-Japan Cooperative Program in Natural Resources (UJNR). The panels currently include specialists drawn from the federal departments most concerned with aquaculture. Charged with exploring and developing bilateral cooperation, the panels have focused their efforts on exchanging information related to aquaculture which could be of benefit to both countries. The UJNR was begun during the Third Cabinet-Level Meeting of the Joint United States-Japan Committee on Trade and Economic Affairs in January 1964, In addition to aquaculture, current subjects in the program include desalination of seawater, toxic microorganisms, air pollution, energy, forage crops, national park management, mycoplasmosis, wind and seismic effects, protein resources, forestry, and several joint panels and committees in marine resources research, development, and utilization. Accomplishments include increased communication and cooperation among technical specialists; exchanges of information, data, and research findings; annual meetings of the panels, a policy-coordinative body; administrative staff meetings; exchanges of equipment, materials, and samples; several major technical conferences; and beneficial effects on international relations. (PDF file contains 150 pages.)

Winterfischerei auf Garnelen. Die Anteile der europäischen Garnelenflotten an den Anlandungen von Crangon crangon im Zeitraum Januar bis März der Jahre 1990 bis 1999

„Winter fishery“ on brown shrimp does not imply a special type of fishery. It merely means the continuation of the standard fishing procedure of parts of the fleet during wintertime, when the majority of the mostly smaller vessels stay in harbour due to generally unfavourable weather conditions for their activity. During 1990 to 1999 mean European wide landings in January and February summedup to 854 tonnes making up to only 4 % of the mean annual landings (21 805 t). While German vessels landed0.7 % (68.7 t) of their mean annual landings during that period, the other countries caught about 7 % of their individual, mean annual landings at the same time. The Netherlands and Denmark contributed highest tonnages of 580and 110 tonnes, respectively, to the total European landings, making up 81 % of them. As about 70 % of brown shrimp may carry eggs in January, the winter fishery took a mean total of about 2.15 x 1012brown shrimp eggs out of the stocks in that period annually. As there is no reliable assessment available concerning the brown shrimp stocks, it is despite of these high losses of eggs not possible to trace a negative effect of the winter fishery in scientific terms. However, precautional catch reductions in winter would be in favour of higher survival rates of eggs, which are the carrying source for the recruitment of brown shrimp stocks and catches in forthcoming summer and autumn seasons according to Dutch investigations.

Der deutsche Austernmarkt in den Jahren 1989 und 1990

Der vorliegende Artikel aktualisiert frühere Informationen zum gleichen Thema (NEUDECKER, 1989a). Alle verwendeten Daten stammen entweder vom Statistischen Bundesamt in Wiesbaden, das sämtliche deutsche Einfuhren registriert, die von den Zolldienststellen erfaßt werden, oder von den deutschen Austernproduzenten selbst.

Report of the Inter-American Tropical Tuna Commission for the year 1990

ENGLISH: The Inter-American Tropical Tuna Commission operates under the authority and direction of a convention originally entered into by Costa Rica and the United States. The convention, which came into force in 1950, is open to adherence by other governments whose nationals fish for tropical tunas in the eastern Pacific Ocean. Under this provision Panama adhered in 1953, Ecuador in 1961, Mexico in 1964, Canada in 1968, Japan in 1970, and France and Nicaragua in 1973. Ecuador withdrew from the Commission in 1968, Mexico in 1978, Costa Rica in 1979, and Canada in 1984. Costa Rica re-adhered to the convention in 1989, and Vanuatu joined the Commission in 1990. The Commission held its 47th meeting in Washington, D.C., on June 26-28, 1990. SPANISH: La Comisión Interamericana del Atún Tropical funciona bajo la autoridad y dirección de un convenio suscrito originalmente por Costa Rica y los Estados Unidos de América. El convenio, vigente desde 1950, está abierto a la afiliación de cualquier pais cuyos ciudadanos pesquen atunes tropicales en el Oceano Pacífico oriental. Bajo esta estipulación, la República de Panamá se afilió en 1953, Ecuador en 1961, Mexico en 1964, Canadá en 1968, Japón en 1970, Francia y Nicaragua en 1973. Ecuador se retiró de la Comisión en 1968, México en 1978, Costa Rica en 1979 y Canadá en 1984. Costa Rica se adhirió de nuevo al Convenio en 1989, y Vanuatu se hizo miembro de la Comisión en 1990. La Comisión celebró su XLVII reunión en Washington, D.C., del 26 al 28 de junio de 1990. (PDF contains 245 pages.)

Front pages of No. 49, 1990, English version

Special issue entitled: A Brief History of the Charles Darwin Foundation for the Galapagos Islands 1959-1988

Stations cotières et station hydrologique cotière d'Abidjan années 1977, 1978 et 1979

On tables 1 to 12, daily beach surface temperatures are presented. These temperatures are also ploted on figures 2 to 5 in daily values and in 7, 15, 30 days means. Salinity variations are less important than these of temperature (Fig. 6, 7). It follows that during upwelling period, variations of dynamic height anomaly are closely correlated with temperature (Fig. 6 and 8).

Synthèse des travaux effectués au CRO sur les végétations envahissantes flottantes (1985-1990). Propositions et recommandations

The present document represents a synthesis of the scientific knowledge gathered by the CRO in the years 1985-1990, and related to the proliferation of aquatic macrophytes, commonly called floating aquatic weeds, in the Ebrié lagoon.