A detailed account is given by the octopaminergic innervation of the antennal heart in Schistocerca gregaria using various immunohistochemical methods. Anterograde axonal filling illustrates the unilateral innervation on the medial ventral surface of the pumping muscle of the antennal heart via the paired corpora cardiaca nerve III. In addition, antibody staining revealed that ascending axons of this nerve terminate at the ampullae of the antennal heart forming synaptoid structures and extensive neurohaemal release sites. Due to the innervation by two dorsal unpaired median neurons, the presence of the biogenic amines octopamine and tyramine could be visualized by immunocytochemistry in an insect antennal heart for the first time. The data suggest that tyramine acts as a precursor and not purely as an independent transmitter. While the octopaminergic fibers innervating the pumping muscle of the antennal heart indicate a cardioregulatory role, we conclude that octopamine released from the neurohaemal area is pumped into the antennae and an involvement in the modulation of the antennal sensory sensitivity is discussed.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1007/s00359-017-1213-5 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
The complex neurochemistry of the cockroach antennal heart.
Cell Tissue Res
November 2024
Department of Biology II (Zoology), RWTH Aachen University, Worringerweg 3, 52074, Aachen, Germany.
The innervation of the antennal heart of the cockroach Periplaneta americana was studied with immunocytochemical techniques on both the light and electron microscopic levels. The antennal heart is innervated by two efferent systems, both using one biogenic amine in combination with neuropeptides. In one, we found co-localization of serotonin with proctolin and allatostatin.
View Article and Find Full Text PDFUnveiling Chemical Cues of Insect-Tree and Insect-Insect Interactions for the Eucalyptus Weevil and Its Egg Parasitoid by Multidimensional Gas Chromatographic Methods.
Molecules
June 2022
Associated Laboratory for Green Chemistry (LAQV) of the Network of Chemistry and Technology (REQUIMTE), Chemistry Department, NOVA School of Science and Technology, NOVA University of Lisbon, 2829-516 Caparica, Portugal.
Multidimensional gas chromatography is, presently, an established and powerful analytical tool, due to higher resolving power than the classical 1D chromatographic approaches. Applied to multiple areas, it allows to isolate, detect and identify a larger number of compounds present in complex matrices, even in trace amounts. Research was conducted to determine which compounds, emitted by host plants of the eucalyptus weevil, , might mediate host selection behavior.
View Article and Find Full Text PDFAntenatal Assessment of Topsy-Turvy Heart With Crisscross Inlet.
JACC Case Rep
May 2021
Sujyot Heart Clinic, Matunga Mumbai, India.
Rare cardiac malpositions are faced with diagnostic challenges and may not follow set rules. The presence of more than one pathology simultaneously makes diagnosis challenging. The present case report describes antennal diagnosis topsy-turvy heart with crossed ventricular inlets.
View Article and Find Full Text PDFIdentification and characterization of a Toll-like receptor gene from Macrobrachium nipponense.
Fish Shellfish Immunol
January 2021
Department of Biomedical Science and Engineering, Konkuk University, 120, Neungdong-ro, Gwangjin-gu, Seoul, 05029, Republic of Korea. Electronic address:
Outbreaks of infectious disease in shrimp pose a serious threat to shrimp agriculture worldwide. Shrimp lack adaptive immunity and depend only on innate immunity as a defense system against infectious disease. Toll-like receptors (TLR) are reported to play a critical role in the innate immune system.
View Article and Find Full Text PDFSilver nanoparticles induce histopathological alterations in juvenile Penaeus vannamei.
Environ Sci Pollut Res Int
February 2021
Center of Nanosciences and Nanotechnology, National Autonomous University of México, Km 107 Carretera Tijuana-Ensenada, Ensenada, Baja California, Mexico.
The objective of this study was to evaluate the histopathological alterations in juvenile Penaeus vannamei caused by silver nanoparticles (AgNPs) for two types of experiments: at sublethal concentrations of 3.6 to 7.1 μg/μL of metallic silver (Ag) for a short period up to 72 h and for 2.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!