Published in Zoological Science, in 1990, in volume 7, pages 195-200

Created: 2012-09-19, modified: 2012-09-19

Published in Zoological Science (Tokyo), in 1986, in volume 3, pages 893-897

Created: 2012-10-02, modified: 2013-04-12

Published in Biol Bull, in 1989, in volume 176, pages 57-62

Created: 2010-01-07, modified: 2011-06-21