Biol. Bull. Sign up for etocs!
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Biol Bull 62: 223-243. (June 1932)
© 1932 Marine Biological Laboratory
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by COLMAN, J.
Right arrow Search for Related Content
PubMed
Right arrow Articles by COLMAN, J.

A STATISTICAL TEST OF THE SPECIES CONCEPT IN LITTORINA

JOHN COLMAN 1

1 MUSEUM OF COMPARATIVE ZOÖLOGY, HARVARD UNIVERSITY

1. Littorina obtusata from Norway, from the Plymouth district in England, and from Rhode Island are so alike that they cannot be separated.

2. L. obtusata from Rhode Island are fairly unlike those from Maine, but the examination of forms from intermediate localities establishes a continuous series up the New England coast. The range of variation remains roughly constant.

3. Further confirmation of the unity of L. obtusata from this wide geographical range is found by adding together the data from all the 933 shells examined. Their proportions follow almost perfect monomodal frequency curves.

4. The names L. littoralis (L.) and L. palliata (Say) must therefore go into synonymy under L. obtusata (L.), since it is shown that there is no division possible between forms to which these names have been given. The name L. rudis (Maton) must be put into synonymy, under L. saxatilis (Olivi), as shown by Dautzenburg and Fischer (1912). The first definition of the genus Litlorina is given by Férussac (1822) on p. xi of his Tabl. Syst. gén de l'emb. des moll.






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1932 by the Marine Biological Laboratory.