Talk:Planarian

Confusing text at 'Biochemical memory experiments'

The text at that section mentions McConnell's experiments on flatworms reacting to electric shocks and bright light, but then midway changes to talk about what I would assume to be some sort of experiment with flatworms following mazes. — Preceding unsigned comment added by 79.77.226.178 (talk) 22:04, 12 April 2014 (UTC)

Planarium

What this page needs is a picture or diagram of a common planaria.

Agreed. Especially since a good portion of "us" and by us I mean American society, and by American society I mean people who maintain and edit Wikipedia (again mostly) remember doing the same experiment in Junior High Biology. Wow, that was a run-on sentence speaking of pre-high school ed.

Roses are good smelling ````` — Preceding unsigned comment added by 138.88.177.18 (talk) 02:03, 15 February 2012 (UTC)

Anyway yeah, Planarians were the one of "examples" in Biology class of taxonomic classification. No more apparently. We have "New Science" now to go along with the miserable failure of "New Math." 72.0.175.144 (talk) 04:23, 27 March 2008 (UTC)

Dusesia tigrina is probably a good candidate for a "common planaria". According to this article itself, "The most frequently used in the high school and first-year college laboratories is the brownish Dugesia tigrina." Unfortunately, the Dugesia page does not have a picture. --Jmz9466 (talk) 04:44, 3 April 2008 (UTC)

Reconciliation of Taxon and Picture

I gave this page a proper taxobox, but then realized that the genus name of the picture caption is in conflict with the taxonomic info I put down. The source I'm using is www.itis.usda.gov and there doesn't seem to be a whole lot of info out there for the Schmidtea genus, but I don't want to just go and change it. Anyone who has more info than I (possibly the originator of the picture) is more than welcome to try and fix this inconsistency. Cerealkiller13 05:26, 9 February 2006 (UTC)

I've just found a almost feet long planarian in my kitchen in Santa Barbara, California.shith

Wow; that's really gross. Yes fascinating. Where did you find it? Scorpionman 22:12, 12 February 2007 (UTC)

Reverted Vandalism

I got rid of some vandalism. The only reason I am posting is becaue it seemed to be there for a while. Somebody has got to take better care of this page... Eiyuu Kou 09:33, 26 Feburary 2007 (PTC) hey ok....well planarians are so cool......they are very small.....and they have a brain size of a microscopic item.....chocolate is very good!!!

Vandalism Explanation

the film "twilight" which is popular among young people briefly references Planaria - it seems its symbolism is to be the non-parasitic parasite. i'm not sure if this information is helpful, but there does always seem to be a pop-culture explanation for wikipedia vandalism especially of obscure article topics such as that in question.

Somewhat related: There is internet "vandalism" about planarians in the aquarium trade, the gist of which is that they are dangerous to shrimp, snails, fish etc. and they must be destroyed. They really are not dangerous, they just eat anything that they can find, especially dead or helpless animals, including eggs. They are probably present in most if not all aquariums. A zoology professor told me that catching planaria is easy: just go fishing in any creek with a piece of meat on the end of your line, go and have a few beers, and then when you pull your line out, the meat will have planaria on it. There are chemical treatments (Buy Now!) for aquariums specifically for getting rid of planarians. They take the trouble to create a aquarium that is full of planaria (no fish) and present that as the massive horrific result of failing to control them. This is all a lot of hooey. Most fish will eat them. (One woman said she had them living in her body and wanted to know how to get rid of them. No comment.) Anyway, perhaps a section on planarians as they relate to the aquarium trade, in a general way, and how common they are, would be appropriate. I'm not sure how to go about that, since the internet sources about this present a fake picture and try to sell something. Wastrel Way (talk) Eric

Naming

The article seems to use "planaria" interchangeably as a singular and plural, and the title of the article is "planarium" even though elsewhere it uses "planarian" as the singular. I thought "planaria" was plural, and "planarian" was the correct singular. I don't think I've ever heard "planarium" elsewhere; it sounds incorrect. This kind of thing should be easy to find a reference for. Would someone care to do so, and if (as I suspect) "planarium" is an aberration, rename the article to the correct singular?

• I think you're right; "Planarian" seems to be more standard as the name for a single flatworm: it has ~186,000 hits on google vs. ~700 for "Planarium." I tried to move this page, but since "Planarian" already exists as a redirect page, it wouldn't let me... does someone who knows how to do this want to give it a try? I've added it to Wikipedia:Requested moves. Bencoland 11:39, 4 December 2007 (UTC)
• Support Use English, not Neo-Latin. Septentrionalis PMAnderson 04:28, 5 December 2007 (UTC)
• Support I got slightly different numbers (86,000 for planarian vs. 3,100 for planarium^[1]), but that's still very convincing --Lox (t,c) 22:48, 8 December 2007 (UTC)

This page has been moved from "Planarium" to "Planarian" as the result of a move proposal listed at Wikipedia:Requested moves. Dekimasuよ! 02:58, 10 December 2007 (UTC)

• Yes —Preceding unsigned comment added by 75.83.98.1 (talk) 01:21, 8 May 2008 (UTC)

Citation needed

About the "tail dropping" subject, and overfeeding, all that information came in the "instruction" manual that came with my planarian. Montgomery' 39 (talk) 23:12, 31 August 2008 (UTC)

Penis Shape

I removed the part of the artical stating that Planarians are penis shaped becuase no one needs to know this

Valserian (talk) 00:34, 28 October 2008 (UTC)

Diet?

Can you please include a section stating the diet of this animal? —Preceding unsigned comment added by Valserian (talk • contribs) 22:53, 28 October 2008 (UTC)

Confusion/Mistakes

In this article there're a confusion involving two terms Planariidae (in the taxbox and in the beginning of the definition) and Planarian that does reference to some groups of the Turbellaria clade. Planarian is not a phylogenetic clade, just like "worm". The Planariidae is a clade that comprises only some genera of freshwater flatworms.--Edsova (talk) 08:46, 4 July 2009 (UTC)PAnd, In fact, they do not use cilia to move. They use something like cilia called setae. Look it up!

One year and a half after my comment, nobody said anything and the article is still deeply incorrect. I will take the licence to "clean it up" during the next weeks.--Edsova (talk) 18:34, 9 January 2011 (UTC)

I'm fairly certain that the second image in the article is an acoel and not a planarian —Preceding unsigned comment added by 130.126.52.161 (talk) 22:25, 30 September 2010 (UTC)

The "Biochemical memory experiments" section describes an experiment with light exposure. At the end of the section, it says "No blinded experiment has ever reproduced his results of 'maze-running'." The maze running experiment was never previously mentioned, so I think something is missing here. — Preceding unsigned comment added by 207.145.81.211 (talk) 17:37, 3 April 2013 (UTC)

Suggestion to merge with Tricladida

This article deals exclusively with triclad flatworms, which are the organisms usually called "planarian". Although the article Tricladida states that the name "planarian" is also used for other flatworms, this occurs very rarely, thus "planarian" is basically a synonym, i.e., a colloquial name, of "triclad". Having a detailed description of triclad flatworms in a page named "planarian" while leaving the page "Tricladida" so poorly written only lets important and related information apart and, in order to avoid duplicating information in two pages that deal with the same subject, it would be better to turn them into a single page. Piter Keo (talk • contribs) 16:18, 25 August 2018 (UTC)

biochemical memory experiments

If the point of this is transfer of memory/learned behavior to the next generation, then the text should probably say "Thompson and McConnell found that if they cut the worm in two, and allowed both worms to regenerate each half would display the light-shock reaction." Developing it would not be remarkable if all planaria could do it. --2607:FEA8:FF01:79BF:317A:5818:FAB4:18BD (talk) 01:00, 21 October 2021 (UTC)