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The reproductive system of Derocheilocaris typica (Crustacea, Mystacocarida)

Hessler, Robert R. and Elofsson, Rolf LU (2012) In Arthropod Structure & Development 41(3). p.281-291
Abstract
Mystacocarids are dioecious. Their gonopores are on the medial side of the third thoracic limb. The male's paired testes lie in the thorax and abdomen. They develop from paired rows of six small follicles dorsally. In the mature animal they fill most of the abdomen. The spermatophores develop within the follicles from spermatogonia mixed with follicle cells, which support and nourish the spermatocytes and produce the seminal fluid. The short vas deferens runs along the bottom of the testes and then continues forward to the gonopore. The vas deferens has a small group of cells near the gonopore that becomes a closure mechanism. The female has reproductive cells and also support cells that provide nutrition and form the wall of the ovary and... (More)
Mystacocarids are dioecious. Their gonopores are on the medial side of the third thoracic limb. The male's paired testes lie in the thorax and abdomen. They develop from paired rows of six small follicles dorsally. In the mature animal they fill most of the abdomen. The spermatophores develop within the follicles from spermatogonia mixed with follicle cells, which support and nourish the spermatocytes and produce the seminal fluid. The short vas deferens runs along the bottom of the testes and then continues forward to the gonopore. The vas deferens has a small group of cells near the gonopore that becomes a closure mechanism. The female has reproductive cells and also support cells that provide nutrition and form the wall of the ovary and oviduct. The unpaired female ovary begins in the third thoracic segment. During maturation, the oocytes are pushed posteriorly. The enormous mature ovum extends into a caudal pocket of the ovary. Starting with its anterior end, this ovum is extruded into the short oviduct, which extends laterally and ventrally to the gonopore. During extrusion, the pocket is reabsorbed from behind. There are no accessory structures connected to the reproductive system, nor any external specializations on the third limb. (C) 2012 Elsevier Ltd. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Crustacea, Mystacocarida, Derocheilocaris, Reproductive system
in
Arthropod Structure & Development
volume
41
issue
3
pages
281 - 291
publisher
Elsevier
external identifiers
  • wos:000304510700008
  • scopus:84860597976
ISSN
1467-8039
DOI
10.1016/j.asd.2012.02.003
language
English
LU publication?
yes
id
1cb758fb-2d9d-4006-896d-1ad46420e129 (old id 2809473)
date added to LUP
2012-06-25 10:48:09
date last changed
2017-08-13 03:50:49
@article{1cb758fb-2d9d-4006-896d-1ad46420e129,
  abstract     = {Mystacocarids are dioecious. Their gonopores are on the medial side of the third thoracic limb. The male's paired testes lie in the thorax and abdomen. They develop from paired rows of six small follicles dorsally. In the mature animal they fill most of the abdomen. The spermatophores develop within the follicles from spermatogonia mixed with follicle cells, which support and nourish the spermatocytes and produce the seminal fluid. The short vas deferens runs along the bottom of the testes and then continues forward to the gonopore. The vas deferens has a small group of cells near the gonopore that becomes a closure mechanism. The female has reproductive cells and also support cells that provide nutrition and form the wall of the ovary and oviduct. The unpaired female ovary begins in the third thoracic segment. During maturation, the oocytes are pushed posteriorly. The enormous mature ovum extends into a caudal pocket of the ovary. Starting with its anterior end, this ovum is extruded into the short oviduct, which extends laterally and ventrally to the gonopore. During extrusion, the pocket is reabsorbed from behind. There are no accessory structures connected to the reproductive system, nor any external specializations on the third limb. (C) 2012 Elsevier Ltd. All rights reserved.},
  author       = {Hessler, Robert R. and Elofsson, Rolf},
  issn         = {1467-8039},
  keyword      = {Crustacea,Mystacocarida,Derocheilocaris,Reproductive system},
  language     = {eng},
  number       = {3},
  pages        = {281--291},
  publisher    = {Elsevier},
  series       = {Arthropod Structure & Development},
  title        = {The reproductive system of Derocheilocaris typica (Crustacea, Mystacocarida)},
  url          = {http://dx.doi.org/10.1016/j.asd.2012.02.003},
  volume       = {41},
  year         = {2012},
}