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Figure 1 | BMC Evolutionary Biology

Figure 1

From: Serotonin immunoreactive interneurons in the brain of the Remipedia: new insights into the phylogenetic affinities of an enigmatic crustacean taxon

Figure 1

Habitat, external morphology and brain architecture of Remipedia. (A, B) Photographs of the interior of anchialine caves give an impression of the difficulties in collecting Remipedia. (A) Cenote Carwash near Tulum, Mexico is the type locality for the remipede Speleonectes tulumensis (photo by Joerg Hess). (B) Tunel de Atlantida, a volcanic cave in Lanzarote, Canary Islands, contains two species of Speleonectes (photo by Jill Heinerth). (C) Photograph of Speleonectes tanumekes. The body of Remipedia can be divided into two main regions, a cephalothorax composed of six appendage-bearing somites including biramous first antennae and a homonomous trunk with numerous segments, each equipped with a pair of biramous limbs (modified from [2]; Photograph courtesy of J. van der Ham). (D) Modified 3D reconstruction of the general brain anatomy of Remipedia adopted from [15]. Abbreviations: A1Nv: antenna 1 nerve; CB: central body; HE: hemiellipsoid body; LAN: lateral antenna 1 neuropil; OGT: olfactory globular tract; ON: olfactory neuropil; OS: olfactory satellite neuropil; PB: protocerebral bridge; PL: protocerebral sublobes.

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