Table 2.
Neuropeptide ligand (L) and putative G protein-coupled receptor (R) genes identified within the Carma_CNS-transcriptome compared with data for selected arthropods
| C. maenas | H. americanus [29] | P. clarkii [51] | S. maritima [50] | Drosophila [93] | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| L | R | L | R | L | R | L | R | L | R | |
| ACP | 1 | 2a | 1 | 1 | 1 | 1 | 1 | 1 | ||
| AKH\RPCH | 1 | 1a | nf | 2 | 1 | 1 | 1 | 1 | 1 | 1 |
| Agatoxin-like peptide (ALP) | 1 | nf | ||||||||
| Allatostatin-A | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 |
| Allatostatin-B\MIP | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | ||
| Allatostatin-C\CC\CCC | 1\2\1 | 1 | 2 | 3 | 2\1\nf | 3 | 1\1\nf | nf | 1 | 2 |
| Allatotropin | 1 | 1 | ||||||||
| Bursicon-a\b | 1\1 | 2 | 1\1 | 2 | 1\1 | 2 | 1\1 | 1 | 1\1 | 1 |
| Calcitonin | 1 | 1 | 1 | nf | ||||||
| CAPA | 1 | 1 | ||||||||
| CCHamide | 2 | 4 | 2 | 2 | 2 | 2 | 2 | 1 | 2 | 2 |
| CCRFamide | 1 | ? | 1 | n? | ||||||
| CNMamide | 1 | 1 | 1 | 1 | ||||||
| Corazonin | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 |
| CRF-like DH (DH44) | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 2 |
| CCAP | 1 | 1 | 1 | 1 | 1 | nf | 1 | 1 | 1 | 1 |
| CFSH | 1 | ? | 1 | ? | ||||||
| CFSH-like | 2 | ? | 2 | ? | ||||||
| CHH | 2 | ? | 4 | ? | 2 | ? | ||||
| CHH-MIH-like | 1 | ? | 2 | ? | ||||||
| DH31 | 1 | 1 | 1 | 3 | 1 | 1 | 1 | 1 | 1 | 1 |
| EH | 2 | 2 | 2 | nf | 2 | 2 | 2 | 2 | ||
| Carcikinin\ETH | 1 | 3 | nf | 3 | nf | 2 | 1 | 2 | 1 | 1 |
| EFLamide | 1 | 1 | 1 | nf | 1 | nf | ||||
| Elevenin-like peptide | 1 | 2 | 1 | nf | 1 | nf | ||||
| FMRFamide | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 |
| GPA2\GPB5 | 1\1 | 2 | 1\1 | 1 | 1\1 | 1 | ||||
| HIGSLYRamide | 5 | ? | ||||||||
| Hyrg | 1 | ? | ||||||||
| ILP | 1 | 1 | 1 | 2 | 1 | 1 | 1 | nf | ||
| Intocin | 1 | 2 | 1 | nf | 1 | 2 | 1 | 2 | ||
| ITP | nf | 2 | 1 | nf | ||||||
| Leucokinin | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | ||
| MIH | 1 | ? | 1 | ? | ||||||
| Myosuppressin | 1 | 2 | 1 | 1 | 1 | 2 | 1 | 2 | 1 | 2 |
| Natalisin | 1 | 2 | 1 | 1 | 1 | 1 | ||||
| Neuroparsin | 4 | 2 | 1 | nf | 3 | 2 | ||||
| NPF | 2 | 2a | 1 | 4 | 2 | 3 | 1 | 1 | 1 | 1 |
| Orcokinin | 2 | ? | 1 | ? | 1 | ? | ||||
| Periviscerokinin | 1 | nf | 1 | 1 | ||||||
| PDH\ePDH | 3\1 | 3 | 1 | 2 | 3 | 4 | 1 | 1 | ||
| Proctolin | 1 | 2 | 1 | 2 | 1 | 2 | 1 | 1 | 1 | 1 |
| Pyrokinin | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 2 | 2 | 3 |
| Relaxin-like | 2 | 3 | 1 | nf | ||||||
| RYamide | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||
| short Neuropeptide F | 1 | 1 | nf | 1 | 1 | 1 | 1 | 1 | ||
| SIFamide | 1 | 2 | 1 | 1 | 1 | 2 | 1 | 2 | 1 | 1 |
| Sulfakinin | 2 | 2 | 1 | 1 | 1 | 2 | 1 | 3 | 1 | 1 |
| TRP | 1 | 1 | 1 | 3 | 1 | 2 | 1 | 1 | 1 | 2 |
| Trissin | 1 | 2 | 1 | nf | 1 | 2 | ||||
Data from H. americanus [29], P. clarkii [51], S. maratima [50], and Drosophila [93]. For C. maenas, a = additional receptors with sequence similarity identified: 1× ACP/AKH R, 2× NPF-like R. nf = not found,? = receptor not known. See also Table 1 of Veenstra 2016 for a similar comparison of neuropeptide ligand and receptor genes for numerous arthropod species including arachnids [64]