. Bulletin of the British Museum (Natural History). 6 > UJ UJ ^3 ] â B ^SA 1 t I I I â I I 5 6 7 8 9 10 11 12 13 14 15 TOTAL BODY LENGTH - CEN T I M ET RE S. Text-fig. 5. Length frequencies of Lake Victoria Tilapias grown in fishponds, six and three-quarter months after the ponds were stocked with fry less than 20 mm, long. Males , Females . (A) T. esculenta. (B) T. variabilis. than the females or they continue to grow after growth in the females has slowed down. It would be interesting to know how much this is an inherent character of these species and how much it may be influenced by the
. Bulletin of the British Museum (Natural History). 6 > UJ UJ ^3 ] â B ^SA 1 t I I I â I I 5 6 7 8 9 10 11 12 13 14 15 TOTAL BODY LENGTH - CEN T I M ET RE S. Text-fig. 5. Length frequencies of Lake Victoria Tilapias grown in fishponds, six and three-quarter months after the ponds were stocked with fry less than 20 mm, long. Males , Females . (A) T. esculenta. (B) T. variabilis. than the females or they continue to grow after growth in the females has slowed down. It would be interesting to know how much this is an inherent character of these species and how much it may be influenced by the very unequal sex ratio, the more numerous males having more energy available for growth than the females who may be constantly engaged in reproduction. Among the T. variabilis, males and females grew at approximately the same rate, but there were approximately. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Museum (Natural History). London : BM(NH)
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