<article_title>Bryozoa</article_title>
<edit_user>Casliber</edit_user>
<edit_time>Saturday, October 24, 2009 12:17:31 PM CEST</edit_time>
<edit_comment>more ce</edit_comment>
<edit_text><strong><strike>M</strike></strong><strong>Predators of m</strong>arine bryozoans are preyed on by nudibranchs (&quot;sea slugs&quot;), fish, sea urchins, pycnogonids, crustaceans, mites and starfish. Freshwater bryozoans are attacked by many predators, including snails, insects, and fish. In Thailand, many populations of one freshwater species have been wiped out by an introduced species of snail. A fast-growing invasive bryozoan off the North-East and North-West coasts of the USA has reduced kelp forests so much that it has affected local fish and invertebrate populations. Bryozoans have spread diseases to fish farms and fishermen. Chemicals extracted from a marine bryozoan species have been investigated for treatment of cancer and Alzheimer's Disease, but analyses have not been encouraging.</edit_text>
<turn_user>Philcha<turn_user>
<turn_time>Friday, October 23, 2009 6:08:07 PM CEST</turn_time>
<turn_topicname>What classes?</turn_topicname>
<turn_topictext>The intro says "Some colonies of classes have various types of non-feeding specialist zooids". What does classes mean in this context? In some classes there are species where many individuals form colonies where ...; In some colonies (namely the colonies of particular species) each individual belongs to one of several classes. There are differences in form an function between individuals of different classes. OR ... --Ettrig (talk) 11:45, 23 October 2009 (UTC) Oops, thanks for pointing that out! Is "Colonies of some classes have various types of non-feeding specialist zooids,..." better? --Philcha (talk) 12:20, 23 October 2009 (UTC) This implies that division into types is the same for all species in the class, for all classes. Is this true? --Ettrig (talk) 14:32, 23 October 2009 (UTC)I think the answer may be in the main text, complete with refs - the phrase you rightly questioned was in the lead, which is a ( ? light-weight ?) summary. --Philcha (talk) 15:33, 23 October 2009 (UTC) OK, it seems I must keep reading. Pterobranchs ==&gt; Pterobranches ? This word is linked to a redirect page. Change link to Pterobranchia? --Ettrig (talk) 15:57, 23 October 2009 (UTC) "Pterobranchs" is correct and is the name for the actual animals. "Pterobranchia" is the name of the classification. --Philcha (talk) 18:08, 23 October 2009 (UTC)</turn_topictext>
<turn_text>"Pterobranchs" is correct and is the name for the actual animals. "Pterobranchia" is the name of the classification. </turn_text>