Camparaçāo entre os cruzeiros de investigaçāo realizados no Banco de Sofala pelo navio SRTM "Sebastopolsky rybak" em Setembro-Outubro e Novembro-Dezembro de 1982: camarao de [águas pouco profundas]

During the last 4 months of 1982, two research cruises had been carried out at the Sofala Bank by the SRTM "Sevastopolsky Rybak". The authors analyze and compare data on biological characteristics, sexual maturity and localization of Penaeus indicus and Metapenaeus monoceros.

Relatório do cruzeiro realizado no Banco de Sofala pelo navio SRTM "Sebastopolsky rybak" de Novembro a Dezembro de 1982: camarāo de águas pouco profundas

From November 18th to December 17th 1982, the SRTM "Sebastopolsky Rybak" carried out research cruises on the Sofala Bank in the area between 16°20'S and parallel 19°40'S. The authors analyze data collected on biological characteristics, sexual maturity and localization of Penaeus indicus, Metapenaeus monoceros, Penaeus japonicus, Penaeus monodon and Penaeus latisulcatus.

Circulation system and areas of potentially successful tuna fishing with surface methods off Mozambique

Charts with 3-months running means of thermal data collected during 1977-1982 are used to describe the seasonal variability of the circulation pattern off Mozambique, and to identify the areas of tuna vulnerability to surface gears. The main conclusions reached by Sætre and Jorge da Silva (1984) have received further support. Areas of potentially successful exploitation of tunas by surface methods have been identified during the whole year, with emphasis for November-April.

Mortality rates estimates for Metapenaeus monoceros (Fabricius) of Maputo Bay

The species Metapenaeus monoceros in Maputo Bay recruits to the fishery almost all over the year, but the main recruitment occurs over a short period of time, each year, during April-May. Growth curves were constructed by following the progression of modes over a period of time. The von Bertalanffy growth parameters were estimated as L∞=31.9 mm and K(monthly)=0.25, for males, and L∞=48.3 mm and K(monthly)=0.14, for females (Brinca and Sousa, 1984). Using data on growth and length composition of the catches, the following methods were applied to estimate mortality rates of M. monoceros: estimation of natural mortality by using approximative methods; use of c.p.u.e. data; catch curves; cohort analysis; average age and length methods.

A study on growth of Metapenaeus monoceros (Fabricius) of Maputo Bay

Biological data on Metapenaeus monoceros has been regularly collected in Maputo Bay since 1968. The main objective of this report is to study growth as a function of the size, since this is one of the basic parameters for population dynamics. As the possibility of studying shrimp growth by modal progression analysis depends very much on the space-time configuration of sampling, the years 1968 and 1969 were chosen to study growth of the population available to the bottom trawl used by the fishing industry. In those years sampling was very frequent (twice a week) and the samples were collected from a rather small fishing area. Complementary data on the spawning, juvenile phase and recruitment to the fishery was used to establish the relationship between the different stages of the life cycle and to obtain an age/length key. Data on juveniles in estuaries was only available for 1969 and 1973.

Hydrology and fish distribution at the Sofala Bank (Mozambique)

A brief review is made of the hydrologic conditions at the Sofala Bank, mainly based on the research data obtained from 1978 to 1982. A description is attempted of the circulation pattern and the distribution of water masses in the area, four hydrologic regimes being identified. These are compared with the distributions of different pelagic and demersal fish species. A tendency is found for different groups of species to prefer different hydrologic regimes.

A preliminary assessment of the scad and mackerel stocks at Sofala Bank, Mozambique

Scads (Decapterus russellii, D. macrosoma, Selar crumenophthalmus), Indian mackerel (Rastrelliger kanagurta) and horse mackerel (Trachurus trachurus) are the main pelagic species caught in a bottom trawl fishery at Sofala Bank and at Boa Paz. Information on catch and effort is presented together with available data on distribution, spawning, size at first maturity, growth, mortality and biomass of the species. As the present catch and fishing mortality are low compared to the estimates of biomass and total mortality it is concluded that the fishery may be expanded further in the future.

La Bibliografía Científica de Fernando de Buen.

Si bien existen varios ensayos biográficos que enfocan diferentes momentos de su vida (ANÓNIMO, 1963, BAHAMONDE, 1962, LÓPEZ et al., 2015, NION, 2015, PEQUEÑO, 2015, SÁNCHEZ CARRILLO, 2001), hasta donde tenemos conocimiento, no se ha publicado aún una bibliografía completa de la obra del Dr. FERNANDO DE BUEN Y LOZANO (Fig. de tapa). Bibliografías parciales se encuentran, entre otros, en los autores arriba citados. Aquí nos atrevemos a hacer el intento, aunque en forma defectuosa, ya que muchas de sus publicaciones no las hemos podido consultar directamente (se señalan con un asterisco, *). En parte nos hemos basado en una compilación hecha por el propio DE BUEN, que abarca los años 1915 a 1949 (Fig. 1), aunque no siempre con los datos necesarios para una completa información sobre la publicación; en lo posible intentamos complementarla. En sus casi cincuenta años de actividad científica, llegó a producir casi 300 títulos, de variado contenido, aunque siempre relacionados con el medio acuático, sea marino o dulceacuícola. Esta producción se puede dividir en cuatro períodos, que comienza con su etapa española, europea y africana (marroquí), entre 1915 y 1937, durante la cual publicó más de 140 títulos. Como consecuencia de la Guerra Civil Española, en 1939 se radica en México, donde permanece desde el 12 de Julio de 1939 hasta Noviembre 1946, país al que regresa entre 1953 y 1957. Durante este período escribe unos 70 artículos. Entre esas dos etapas mexicanas, estuvo brevemente radicado en el Uruguay, desde el 26 de Noviembre de 1946 hasta 1953, sin duda la etapa de menor producción científica, con una docena trabajos. A ésta sigue el último período de su vida, en Chile (Fig. 2), la que lamentablemente termina trágicamente, en 1962. Durante este período publica más de 60 publicaciones, de los cuales, aparentemente, seis quedan inéditas. Cabe señalar que durante estas tres etapas de exilio americano, si bien sus publicaciones están mayoritariamente relacionadas con el país de residencia, hay algunas excepciones. Preivo a estas estadías en América, hay que mencionar tres europeas, fuera de España, a saber: en el Museo Oceanográfico de Mónaco (1919), en el Instituto Centrale di Biologia Marina, Messina, Italia (1919), y en el Laboratorio Arago, Banyuls sur Mer, Francia (1939). En general, puede considerarse que FERNANDO DE BUEN fue un investigador solitario, ya que solamente seis, de sus casi 300 trabajos, fueron publicados en colaboración: dos con su hermano SADÍ DE BUEN (#31 y 32), dos con F. FRADE (#115 y 116), y dos con MANUEL ZOZAYA (#162 y 176). En su obra científica hemos podido identificar la descripción original de 12 géneros, 9 subgéneros, 54 especies y 11 subespecies, como se indican en la Tabla I.