Published in Zoological Science, in 1992, in volume 9, pages 619-624
Created: 2012-09-19, modified: 2012-09-19![](https://www.biodiversitylibrary.org/pagethumb/40502164,60,60)
Published in Zoological Science, in 1991, in volume 8, pages 885-891
Created: 2012-09-19, modified: 2012-09-19![](https://www.biodiversitylibrary.org/pagethumb/1529212,60,60)
Published in Biol Bull, in 2002, in volume 202, pages 213-222
Created: 2010-01-07, modified: 2011-06-21