Cookies Policy
X

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies.

I accept this policy

Find out more here

Reproductive Morphology and Biology of Male and Female Mantis Shrimp (Stomatopoda: Squillidae)

No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The full text of this article is not currently available.

Brill’s MyBook program is exclusively available on BrillOnline Books and Journals. Students and scholars affiliated with an institution that has purchased a Brill E-Book on the BrillOnline platform automatically have access to the MyBook option for the title(s) acquired by the Library. Brill MyBook is a print-on-demand paperback copy which is sold at a favorably uniform low price.

Access this article

+ Tax (if applicable)
Add to Favorites
You must be logged in to use this functionality

image of Journal of Crustacean Biology

Abstract Male and female reproductive anatomy of a “spearer” mantis shrimp, Squilla empusa, is described using light and scanning electron microscopy as well as dissections. The genital region of females is located medially on the sixth thoracic sternite. It consists of a pair of gonopores connected by a medial genital slit, which leads to a cuticlar sperm storage organ that is shed with every molt. Sperm and accessory material have been located in the seminal receptacle. The accessory material appears to serve as a sperm plug. Females have three internally located cement glands that are visible through the exoskeleton on the thoracic sternite surface. The cement-gland material forms a matrix that holds individual embryos together in a uniform mass. Cement glands develop in synchrony with the ovaries, and development is divided into three stages. Posterior to the gonopores is a medial pore from which material from the cement gland is released. Reproductively active females have ovaries that are oriented anteriorly to posteriorly and are visible dorsally and ventrally through the exoskeleton. Males have paired penes that arise from the last pair of walking legs on the eighth thoracic sternite. The distal end of each penis has two openings: 1) one from the vas deferens that transfers sperm and 2) one from the accessory gland duct that contains sperm plug material for the female seminal receptacle. Male penes are not symmetrical; the left penis is significantly longer when compared to the right penis. Under laboratory conditions, most females that did not have immediate access to males before oviposition produced unfertilized eggs. Two females produced fertilized eggs; one lacked contact with a male for four weeks, and one had constant male contact. The seminal receptacle may normally serve as short-term sperm storage, even though long-term storage was documented. Molting is not related to oviposition. Females produce consecutive broods of eggs an average of 40.6 days apart. Based on the location of the oviducts with respect to the female seminal receptacle, fertilization occurs immediately after the eggs are extruded from the oviducts.

Loading

Full text loading...

/content/journals/10.1163/20021975-99990287
Loading

Data & Media loading...

http://brill.metastore.ingenta.com/content/journals/10.1163/20021975-99990287
Loading

Article metrics loading...

/content/journals/10.1163/20021975-99990287
2002-01-01
2016-12-04

Sign-in

Can't access your account?
  • Tools

  • Add to Favorites
  • Printable version
  • Email this page
  • Subscribe to ToC alert
  • Get permissions
  • Recommend to your library

    You must fill out fields marked with: *

    Librarian details
    Your details
    Why are you recommending this title?
    Select reason:
     
    Journal of Crustacean Biology — Recommend this title to your library
  • Export citations
  • Key

  • Full access
  • Open Access
  • Partial/No accessInformation