TY - JOUR T1 - Common general morphological pattern of peptidergic neurons in the arachnid brain: crustacean cardioactive peptide-immunoreactive neurons in the protocerebrum of seven arachnid species JF - Cell & Tissue Research Y1 - 1995 A1 - Breidbach, Olaf A1 - Dircksen, Heinrich A1 - Wegerhoff, Rainer SP - 183 EP - 197 KW - [Brain / / Protocerebrum KW - Arachnida (Arthropoda). KW - Arachnida [Brain / / Protocerebrum KW - Araneus diadematus KW - Araneus diadematus (Araneae). KW - Brachypelma albopilosa KW - Brachypelma albopilosa (Araneae). KW - Cupiennius salei KW - Cupiennius salei (Araneae). KW - distribution KW - distribution pattern]. KW - Meta KW - Meta segmentata (Araneae). KW - Nephila clavipes KW - Nephila clavipes (Araneae). KW - Nervous system KW - pattern] [Neurons / / Peptidergic neurons in protocerebrum]. KW - peptidergic neurons KW - Rilaena triangularis KW - Rilaena triangularis (Opiliones). KW - segmentata KW - Tegenaria atrica KW - Tegenaria atrica (Araneae). AB - A polyclonal antiserum raised against crustacean cardioactive peptide labels 14 clusters of immunoreactive neurons in the protocerebrum of the spiders Tegenaria atrica and Nephila clavipes, and the harvestman (opilionid) Rilaena triangularis. In all species, these clusters possess the same number of neurons, and share similar structural and topological characteristics. Two sets of bilateral symmetrical neurons associated with the optic lobes and the arachnid "central body" were analysed in detail, comparing the harvestman R. triangularis and the spiders Brachypelma albopilosa (Theraphosidae), Cupiennius salei (Lycosidae), Tegenaria atrica (Agelenidae), Meta segmentata (Metidae) and Nephila clavipes (Araneidae). Sixteen neurons have been identified that display markedly similar axonal pathways and arborization patterns in all species. These neurons are considered homologues in the opilionid and the araneid brains. We presume that these putative phylogenetically persisting neurons represent part of the general morphological pattern of the arachnid brain. VL - 279 SN - 0302-766X UR - ://ZOOREC:ZOOR13100058982 N1 - ZOOR13100058982 ER -