. Bulletin of the United States Fish Commission. Fisheries -- United States; Fish-culture -- United States. NATURAL HISTORY OF REDFISH, ETC., OF TEXAS 165 Little information on the spawning habits of the black drum in other sections of its range has been recorded. Welsh and Breder (1923, p. 197) stated that the eggs and larvie of the drum were unrecorded and that little was known of the life history. Hildebrand and Schroeder (1928, p. 288) recorded a fully ripe male drum, 37 inches long, taken on May 22, 1922, at Cape Charles, Va., in 48 feet of water, but stated that no young drum under 8 cen
. Bulletin of the United States Fish Commission. Fisheries -- United States; Fish-culture -- United States. NATURAL HISTORY OF REDFISH, ETC., OF TEXAS 165 Little information on the spawning habits of the black drum in other sections of its range has been recorded. Welsh and Breder (1923, p. 197) stated that the eggs and larvie of the drum were unrecorded and that little was known of the life history. Hildebrand and Schroeder (1928, p. 288) recorded a fully ripe male drum, 37 inches long, taken on May 22, 1922, at Cape Charles, Va., in 48 feet of water, but stated that no young drum under 8 centimeters (3 inches) have ever been secured. GROWTH AND AGE Study of the age and growth of the black drum brought out the fact that by the method of age determination employed with success in the case of the redfish, croaker, and spot (the Petersen method, whereby the individuals of a large collection are grouped according to their length, and each prominent mode or hump in the NO. FISH 20 20 20 20 20 20 m. 3S M ! 197 0 39 23$ 1! i APS. 4 - MM nAY JUN. 8, I92B JUN. JUL. .^^ DEC. NOV OCT. JAN 10- DEC 25, NOV. 1927 0 ens. 10 20 30 40 50 60 70 60 0 10 20 30 40 50 60 70 80 50 Fig. 20.—Length-frequency distribution of black drum in Texas, 1926-27. Actual frequencies have been smoothed by a moving average of threes. Roman numerals indicate year classes plotted frequency distribution is assumed to represent an age class), only the first two year classes of drum could be discerned throughout the year with any degree of reliability. After the third year the various year classes overlap to such an extent as to render the Petersen method worthless. A series of jmoothed length-frequency distributions, taken from Table 15, is presented in monthly summaries by Figure 20. Collections from April 4 to May 8, 1926 (following fig. 20), gave a group of drum (I-year class) assumed to be entering their second year with a modal len
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