Mating system of the lefteye flounder,Engyprosopon grandisquama
- 74 Downloads
Underwater observations were conducted on the reproductive behavior and mating system of the lefteye flounder,Engyprosopon grandisquama, off Nagashima, southwest of Kyushu Island, Japan. Two types of males were found: large males, which defended territories against other large males, and small males, which did likewise but only against smaller males. Large males established territories which encompassed or ovelapped the home ranges of 1 or 2 cohabitant females. Territories of the small males, in which a smaller female often maintained a home range, overlapped those of large males. Pair spawning occurred around sunset. Mating of large males with cohabitant females was observed 36 times and that of a small male with a smaller female once. Pair formation was assorted by body size, paired males being larger than females in most cases. Thus, inE. grandisquama, gigamous large males were common, small males occurring within the former's erritorial boundaries mating with smaller females.
Key wordsBothidae mating system territoriality spawning bigamy
Unable to display preview. Download preview PDF.
- Amaoka, K. 1969. Studies on the sinistral flounders found in the waters around Japan—Taxonomy, anatomy and phylogeny— J. Shimonoseki Univ. Fish., 18:65–340.Google Scholar
- Amaoka, K. 1984. Family Bothidae. Pages 347–350in H. Yoshino, eds. The fishes of the Japanese Archipelago. English text and plates. Tokai Univ. Press, Tokyo.Google Scholar
- Kuwamura, T. 1988. Parental care and social systems in fishes. Kaimeisha, Tokyo. 136pp. (In Japanese).Google Scholar
- Sato, Y. 1971. Spawning behavior ofLimanda yokohamae (Hiji-shiroshita-garei in Japanese) in the laboratory. Suisanzoshoku 19: 183–186. (In Japanese).Google Scholar
- Sato, Y. 1975. Natural spawning behavior of flatfish cultured in an aquarium. Suisanzoshoku 23: 33–35. (In Japanese).Google Scholar
- Thresher, R. E. 1984. Reproduction in reef fishes. T. F. H. Publications, Neptune City. 399pp.Google Scholar