Nectozoa: Difference between revisions
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{{Taxobox|title=Nectozoa|time_range=0.5 Ga - Present|distribution=Miavegr|Clade1=[[Eudiktya]]||Clade2=[[Episcleria]]|image=[[File:|300px]]}} | {{Taxobox|title=Nectozoa|time_range=0.5 Ga - Present|distribution=Miavegr|Clade1=[[Eudiktya]]||Clade2=[[Episcleria]]|image=[[File:|300px]]}}Nectozoans are one of the three independently evolved animal-like kingdoms on [[Miavegr]] . Living Nectozoans are all aquatic and can be found across all Miavegr. | ||
=== Description === | |||
----Nectozoans have a reproducing cycle with a main haploïd organism that is parasitized by diploïd tissues. The haploïd organism is basally a plasmodium, but more complex tissues developed (mainly in Eunectozoa). | |||
==== '''Reproduction''' ==== | |||
The adult haploïd organism has diploïd gonads, these can produce gametes. In most species these can be differentiated in male and female but they can be undifferentiated (both gametes behave as female). After being liberated in the water column female gametes undergo mitosis and develop in a small plasmodium, while male gametes remain as a ciliated single cell. Then somewhere in the development of the plasmodium, it is fecundated by a male gamete. Some Nectozoans are fecundated early in their development and they can further their development only if they meet a male gamete. Others can develop in a full organism before being fecundated. The diploïd cell usually develops to form the gonads and often other essential parts of the adult organism. Nevertheless some Nectozoans can reproduce asexually. | |||
=== Evolution === | |||
---- | |||
=== Phylogeny === | === Phylogeny === | ||
----{{clade |label1=[[Nectozoa]]|1={{clade |1={{clade |label1=[[Onyxia]] | ----{{clade |label1=[[Nectozoa]]|1={{clade |1={{clade |label1=[[Onyxia]] | ||
Revision as of 18:27, 22 October 2026
| Nectozoa | |
| [[File:|300px]] | |
| Classification | |
|---|---|
| Eudiktya | |
| Episcleria | |
| Distribution | |
| Miavegr | |
| Time Range | |
| 0.5 Ga - Present |
Nectozoans are one of the three independently evolved animal-like kingdoms on Miavegr . Living Nectozoans are all aquatic and can be found across all Miavegr.
Description
Nectozoans have a reproducing cycle with a main haploïd organism that is parasitized by diploïd tissues. The haploïd organism is basally a plasmodium, but more complex tissues developed (mainly in Eunectozoa).
Reproduction
The adult haploïd organism has diploïd gonads, these can produce gametes. In most species these can be differentiated in male and female but they can be undifferentiated (both gametes behave as female). After being liberated in the water column female gametes undergo mitosis and develop in a small plasmodium, while male gametes remain as a ciliated single cell. Then somewhere in the development of the plasmodium, it is fecundated by a male gamete. Some Nectozoans are fecundated early in their development and they can further their development only if they meet a male gamete. Others can develop in a full organism before being fecundated. The diploïd cell usually develops to form the gonads and often other essential parts of the adult organism. Nevertheless some Nectozoans can reproduce asexually.
Evolution
Phylogeny
| Nectozoa |
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