Adineta sp. 18

Adineta sp.18, creeping specimen, dorsoventral view. This is one of several morphotypes that have been found in the ephemeral puddles on the granite rocks of the coast of Brittany (France). Another morphotype is documented here.
 
Adineta sp.18, lateral view of specimen trying to extract diet from the particle.
 
Adineta sp.18, three aspects of the anterior part, from dorsal to ventral:
1. Focus plane on the dorsal area with ?nerve cells?
2. optical median section; focus plane on the brain (Br), mastax (Mx), and the dorsal mastax glands (DMG). The asterisks mark hypodermis cells. SC: sensory cilia; RL: rostrum lamella.
3. ventral view Focus plane on the ciliary field. The arrows point to the prehensile apparatus with back-folded rakes, so that the U-hooks are only allusively visible.
 
Adineta sp.18, rake apparatus of a macerated specimen with 6 U-hooks.
 
Adineta sp.18, left image: foot with spurs and interspace. Right image: short dorsal antena, frontal view.
 
Adineta sp.18; trophi
 
This morphotype differs from Adineta sp.17, which has also a reddish integument, by the form of the rostrum lamella and the NoUH; which is 5 in A. sp. 17.
 
Location : Kerfiat, Brittany, France, coastline (click to enlarge)
   
Habitat: puddle on granite rocks
Date: 21.08.2019
freshwater life
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