. Ud^ Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr Mat] Fig. 83. Sei whale. Lengths of immature whales by months. tubules of the testes full of dividing cells, but smears showed only a few spermatozoa in the testis and epididymis of the first, and none in those of the second. These whales were evidently young adults. On the other hand, some males had not reached full sexual maturity at considerably greater lengths. Data relating to calf Sei whales are not available, but a number of immature whales of larger size have been examined. Fig. 83 is a scatter diagram of the lengths of all Sei whales r
. Ud^ Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr Mat] Fig. 83. Sei whale. Lengths of immature whales by months. tubules of the testes full of dividing cells, but smears showed only a few spermatozoa in the testis and epididymis of the first, and none in those of the second. These whales were evidently young adults. On the other hand, some males had not reached full sexual maturity at considerably greater lengths. Data relating to calf Sei whales are not available, but a number of immature whales of larger size have been examined. Fig. 83 is a scatter diagram of the lengths of all Sei whales recorded as immature, plotted by months, and shows a definite increase in length between June and April. Fig. 84 is the curve obtained by plotting the average length of these immature whales by months, and if this curve is combined with that of Fig. 77 on an extended time scale, the result shown in Fig. 85 is produced. From
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Keywords: ., bookcentury1900, booksubjectocean, booksubjectscientificexpediti
