Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/30788
Title: Are puffer fish more toxic in their spawning seasons?
Authors: Yu, CF
Yu, PHF
Issue Date: 2002
Publisher: Springer-Verlag
Source: Marine biology, 2002, v. 140, no. 5, p. 1053-1057 How to cite?
Journal: Marine Biology 
Abstract: It has been a common belief that all puffer fishes are more toxic in their spawning seasons, perhaps to protect their fertilized eggs. However, the current study of two puffer fishes, Takifugu niphobles (Jordan and Snyder) and Takifugu alboplumbeus (Richardson), collected in Hong Kong waters continuously for over a year and bioassayed for toxicity in terms of mouse units (MU), showed the contrary. Their annual spawning seasons (evident from the enlargement of the gonads and the presence of eggs in the ovary) were found to be from October to February (4 consecutive months) and December to February (2 consecutive months), respectively. In both species, the ovaries were highly toxic (100-1,000 MU/g) only in their non-spawning seasons and they became weakly toxic (10-100 MU/g) in their spawning seasons; unlike the ovaries, liver and intestine, the flesh and the skin did not have marked annual toxicity patterns. Their flesh was basically non-toxic (less than 10 MU/g) throughout the whole year. The testes, which were only developed in the spawning seasons, were also found to be non-toxic.
URI: http://hdl.handle.net/10397/30788
ISSN: 0025-3162
DOI: 10.1007/s00227-001-0774-5
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