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The corpus cardiacum (CC) and corpus allatum (CA) of the locust, Locusta migratoria, contain intense proctolin-like immunoreactivity (PLI) within processes and varicosities. In contrast, in the cockroach, Diploptera punctata, although a similar staining pattern occurs within the CC, PLI appears absent within the CA. The possible role of proctolin as a releasing factor for adipokinetic hormone (AKH)...
Crustacean cardioactive peptide (CCAP) stimulates the contractions of locust oviducts. CCAP increased the basal tonus and increased the frequency and amplitude of phasic contractions, as well as the amplitude of neurally-evoked oviduct contractions in a dose-dependent manner. Oviducts from Vth instar larvae and adult locusts aged 10 days or less, were more sensitive to CCAP than oviducts from adult...
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