The effects of Calliphora vomitoria Tachykinin-I and the FMRFamide-related peptide Perisulfakinin on female Phormia regina crop contractions, in vitro.
The dipteran crop is an elaborate diverticulation of the foregut that serves as an important food reservoir and feeding regulator. Peptidergic innervation has been associated with the crop of the blow fly Phormia regina and myotropic neuropeptides have been previously demonstrated to affect crop contraction rates, in vitro. The blow fly peptide, callitachykinin-1 was found to increase the rate of contractions and alter the contractile morphology of the P. regina crop, in vitro. The cockroach peptide perisulfakinin, however, had no measurable affect on crop contractions.
Haselton
Aaron T
AT
Department of Entomology, University of Massachusetts Amherst, Amherst, MA 01003, USA. ahaselton@hotmail.com
Yin
Chih-Ming
CM
Stoffolano
John G
JG
D000818:Animals; D004175:Diptera / Q000187:drug effects*; D005260:Female; D066298:In Vitro Techniques; D009119:Muscle Contraction / Q000187:drug effects*; D009479:Neuropeptides / Q000494:pharmacology*; D010526:Periplaneta; D015320:Tachykinins / Q000494:pharmacology*; D041742:Upper Gastrointestinal Tract / Q000187:drug effects / Q000294:innervation
D009479:Neuropeptides; D015320:Tachykinins; C062380:perisulfakinin; C090692:callitachykinin I