当前位置： SCI文献检索 > GENERAL AND COMPARATIVE ENDOCRINOLOGY期刊下所有文献 > Ultrastructural comparison of the perisympathetic organs in three Coleoptera: Chrysocarabus auronitens F., Oryctes rhinoceros L. and Tenebrio molitor L.

Ultrastructural comparison of the perisympathetic organs in three Coleoptera: Chrysocarabus auronitens F., Oryctes rhinoceros L. and Tenebrio molitor L.

Abstract：

:Ultrastructural comparison of different types of perisympathetic organs (POs) in three species of Coleoptera (Chrysocarabus auronitens, Oryctes rhinoceros, and Tenebrio molitor) showed that the structure of these organs was not related to their morphological types but to their topography. Two kinds of PO structure may be distinguished: compact median and diffuse lateral. They were similar in that both were surrounded by thin neural lamellae and exhibited numerous glial cells originating in the perineurium (type I perineurial cells) as well as abundant neurosecretory endings. They were different in as much as in median POs, the neurosecretory endings were generally surrounded by perineurial processes but in transverse POs, these endings were sheathless. Only one type of neurosecretory axon was distinguished in the median organs but three or four in the transverse. The nature of the processes by which neurosecretory granules are released may depend on the type of neurosecretory axon. For instance, exocytosis always occurred for dense spherical granules, and granule fragmentation was visualized for granules of smaller size.

journal_name

Gen Comp Endocrinol

journal_title

General and comparative endocrinology

authors

Provansal-Baudez A,Baudry-Partiaoglou N

doi

10.1016/0016-6480(83)90203-4

subject

Has Abstract

pub_date

1983-03-01 00:00:00

pages

383-403

issue

3

eissn

0016-6480

issn

1095-6840

journal_volume

49

pub_type

杂志文章

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