Hello, I would like to know of any manga where humans are "enslaved" or live under another species (such as an alien civilization, for instance).

After reading Kiseijuu and thinking about some of the ideas in it, I thought a plot like this would be an interesting to follow.

Any genre is fine. Thank you in advance!

I'd like to 2nd this request. Can't think of anything like this.

[img]http://img716.imageshack.us/img716/6818/29042893.png[/img]
[img]http://img.userbars.pl/69/13603.gif[/img]

7 seeds ...hmm..stuck in prehistoric time in an alternate future
Lives..hm..? some sort of Eden where humans becomes animals and eats each other?
and the only thing that I could think of "human enslavement"by alien race are obvious mangas like Dragonball and Gantz

[img]http://i268.photobucket.com/albums/jj11/obinrobin31/FINISHED2-Roger.gif[/img]
[color=black]The Hidden Agenda=[/color][color=red]Gol.D.Ace[/color]

[color=black]This Week's favourite:[/color]
DoLL (Okado Tatsuya)
Xp

operation liberate men ~~ it may consist some elements that you are looking for.

Ai no Kusabi (anime, novel), sorta... I mean, it's humans ranked socially based on hair colour...(Warning: BL)

[url=http:////www.mangaupdates.com/showtopic.php?tid=42718][img]http://i366.photobucket.com/albums/oo105/CatzCradle64/Avis-Sigs/FunghiPower_zps2a00ba56copy_zpsfc03990e.png[/img][/url]

Blue drop - Tenshi no Bokura
Warning: Shoujo/shounen ai (Yes, both)

[img]http://i136.photobucket.com/albums/q162/anghmw/Conundrum.gif[/img]
What a tangled web we weave, when we practice to deceive
:=EXITUS ACTA PROBAT=:

Thanks very much everyone, you all have my gratitude! These suggestions seem promising!

Any more manga where humans are the kind of "pets" or servants of another species will still be much appreciated.

Well, not enslaved by another species, but by other races, yes.
Historie

♪MONSTARR~ will eat all your cookies and steal your bishies~♪ Φ_Φ

Hmm, it's the case in Kurozakuro, but it doesn't focus around that point and leaves normal humans out of the equation most of the time.

Try World Destruction

Have you read Manhole already? It's like Kiseijuu, but with parasites...

Ikigami also deals with people who treats people trash by ordering who would be next to die by the government.

You might also like Me wo Mite Hanase. No species was present, but from the freakishly drawn last chapter...

NOiSE - a part of the story depicted children being turned into silicon creatures

Homunculus fits your description because "homunculi" live in the subconscious minds of the people in the story.

Whether we fall by ambition, blood, or lust,
Like diamonds, we are cut with our own dust.

samurai deeper kyo don't remember if mibu are humans or not?

[img]http://i718.photobucket.com/albums/ww187/D_dragon/omfgpudding-1.jpg[/img]

Try King of Thorns. You sure going to like it.

Thanks everyone. A few I've read before, but many of these are new to me so I'm grateful for all of the help!

Of the one's I've already read so far, Blue drop - Tenshi no Bokura (with men -and humans as a whole in a sense- under the Arume) operation liberate men (males ruled by females) are probably the closest to what I'm looking for.

Have you read Manhole already? It's like Kiseijuu, but with parasites... I've been meaning to actually, so thanks for pointing it out.

Well, not enslaved by another species, but by other races, yes.
Historie This type of theme is good as well. It fits the main theme I'm looking for, so thanks for the suggestion.

The others I'll look into, so once again, thanks everyone for the help. I appreciate it.