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The production of Liza ramada (Risso) in Lake Mariut, Egypt Wimpenny, R.S. (1955). The production of Liza ramada (Risso) in Lake Mariut, Egypt, in: Papers in Marine Biology and Oceanography. Dedicated to Henry Bryant Bigelow, By His Former Students and Associates on the occasion of The Twenty-fifth Anniversary of the Founding of The Woods Hole Oceanographic Institution 1955. Deep-Sea Research (1953), 3(Supplement): pp. 250-256 In: (1955). Papers in Marine Biology and Oceanography. Dedicated to Henry Bryant Bigelow, By His Former Students and Associates on the occasion of The Twenty-fifth Anniversary of the Founding of The Woods Hole Oceanographic Institution 1955. Deep-Sea Research (1953), 3(Supplement). Pergamon Press: London & New York. 498 pp. In: Deep-Sea Research (1953). Pergamon: Oxford; New York. ISSN 0146-6291; e-ISSN 1878-2485

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Beschikbaar in	Auteur
VLIZ: Open access 302805 [ download pdf ]

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Trefwoord

Marien/Kust

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Auteur		Top
Wimpenny, R.S.

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Abstract

The production of the grey mullet Liza ramada in Lake Mariut, Egypt, is followed from its introduction in 1920 until 1935, special attention being paid to the years 1928-31 and 1933, when age censuses were available. After an initial build-up to a steady state between 1923 and 1926, it is thought that a decline set in about 1927-8 due to a lowering of the lake-level, and that this ended in lower levels of the population from 1930 to 1933 and a further fall in 1934 and 1935. The decline in numbers estimated in the O group catch represented a heavy mortality in the first year, and it is thought that this occurred very soon after the fry were introduced into the lake, as the rate of growth of fish caught in their first year in the lake showed no fall, but a slight increase between 1928 and 1933.

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