Publication: An immunohistochemical survey of peptide-containing nerves in the copulatory apparatus of several male birds
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Date
1993
Authors
Kitamura, N. ; Yamada, J. ; Hayashi, Yoshihiro ; Nishida, T.
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Publisher
Murcia : F. Hernández
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DOI
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info:eu-repo/semantics/article
Description
Abstract
Distribution of peptide-containing nerves in
male copulatory apparatus as well as rectal and cloacal
ganglia were examined immunohistochemically in cock,
guinea fowl, duck and muscovy duck. Neurofilament
protein-immunoreactive nerves were also examined to
investigate general distribution of nerves.
Substance P (SP)-, vasoactive intestinal polypeptide
(VIP)-, calcitonin gene-related peptide (CGRP)-, and
neuropeptide Y (NPY)-immunoreactive (IR) nerves
were detected in al1 four species of birds whereas leucine
enkephalin (LENK)-IR nerves were detected only in
duck and muscovy duck. In the rectal and cloacal
ganglia, peptide-IR nerves were detected in varying
degrees of abundance. Most noticeable distribution was
found in the vascular body, where SP-IR nerve fibres
were more abundant in duck and muscovy duck, VIP-IR
fibres in muscovy duck and CGRP-IR fibres in duck,
than in other regions and other species, respectively. A
few peptide-IR nerve fibres were detected in other
cloacal regions, although a peculiar pattern in
distribution unique to a certain region could be not
found.
The present results suggest that the peptidecontaining
nerves participate in the regulation of
tumescence, erection and detumescence of male
copulatory apparatus of birds and their regulatory
mechanisms are different depending on the species.
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