REPRODUCTION AND GROWTH OF NEOBENEDENIA-GIRELLAE (MONOGENEA, CAPSALIDAE), A SKIN PARASITE OF CULTURED MARINE FISHES OF JAPAN
REPRODUCTION AND GROWTH OF NEOBENEDENIA-GIRELLAE (MONOGENEA, CAPSALIDAE), A SKIN PARASITE OF CULTURED MARINE FISHES OF JAPAN
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DOI：
10.3147/jsfp.30.227
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发表时间：
1995-09-01
期刊：
影响因子：
0.6
通讯作者：
WAKABAYASHI, H
中科院分区：
文献类型：
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作者：
BONDADREANTASO, MG;OGAWA, K;WAKABAYASHI, H
在25 ℃的实验室条件下，单殖吸虫新登虫Neobenedenia girellae（Hargis，1955）在牙鲆（Paralichthys olivaceus）上迅速发育，从卵到成熟需要15-17天。从卵母细胞从生殖道释放到产卵囊，整个卵形成过程平均需73秒。在27-30摄氏度的室温下，大的成虫平均每小时产35.4个卵，而较小的成虫平均每小时产12.2个卵。卵在25 ℃自然光照条件下孵育5-6天后开始孵化，15 ℃不孵化。性成熟需要10-11天，产卵成虫的最小体型为2.1毫米。与其它Benedeniine属植物相比，N.吉瑞拉需要较短的时间和较小的体型达到成熟，并显示出高水平的产蛋量。1日龄仔鱼仅在比目鱼鳍上发现。随着寄生虫的生长，它们不仅在鳍上发现，而且最常见于鱼的背侧和腹侧体表，这表明寄生虫从鳍迁移。
Under laboratory conditions at 25 degrees C, the monogenean Neobenedenia girellae (Hargis, 1955) rapidly developed on Japanese flounder (Paralichthys olivaceus), and it took 15-17 days from egg to maturation. The whole process of egg formation from the release of oocytes from the germiduct to laying of egg capsule required a mean of 73 sec. At room temperatures between 27-30 degrees C, large adults laid a mean of 35.4 eggs/h, while smaller ones a mean of 12.2 eggs/h. Eggs began to hatch after incubation for 5-6 days at 25 degrees C with natural cycle of illumination, but no hatching occurred at 15 degrees C. It took 10-11 days to reach sexual maturity where the minimum body size for an egg-laying adult was 2.1mm. When compared with other benedeniine species, N. girellae required a shorter time and a smaller body size to attain maturity and showed a high level of egg output. One-day old larvae were found only on the fins of Japanese flounder. As the parasites grew, they were found not only on the fins but most commonly on the dorsal and ventral body surface of fish, suggesting migration of the parasite from the fins.