larval Saaghi 3 neuron [FBbt_00111660]

larval Saaghi 3 neuron

ID: FBbt_00111660

Larval premotor neuron (Zarin et al., 2019 that is relatively late-born in the NB5-2 Notch ON primary hemilineage (Mark et al., 2021. From a ventral soma, the primary neurite extends dorsally into the neuromere, with one neurite extending from it anteriorly and arborizing; another neurite extends medially and crosses the midline (Heckscher et al., 2015; Zarin et al., 2019. There is of these one neurons per hemisegment. (Mark et al., 2021, Heckscher et al., 2015)

These neurons were identified in two EM reconstructions: one of the full CNS of a 6h old first instar larva, and another of abdominal segment 3 of a 12-24h old first instar larva. Only bilateral connections are reported. The number of identified input synapses in A1 was the following (number in brackets left/right): from A08e1 (2/2), from A08e2 (2/2), from A08e3 (9/8). The number of identified output synapses in A1 was the following (number in brackets left/right): to ventral motoneurons (2/5), to lateral motoneurons (2/4), to dorsal motoneurons (2/2). It is still not known if the pattern of connections is the same in the other abdominal segments (Heckscher et al., 2015.