Cookies Policy

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

Effects of Eyestalk Ablation at Different Times of the Year on Molting and Reproduction of the Estuarine Grapsid Crab Chasmagnathus Granulata (Decapoda, Brachyura)

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 The effect of unilateral and bilateral eyestalk ablation on molting and reproduction of the estuarine crab Chasmagnathus granulata was studied, during the prereproductive (PRE), reproductive (R), and postreproductive (POST) periods under constant laboratory conditions. The effect of the laboratory conditions themselves was also evaluated by comparing the control intact crabs maintained in the laboratory with an intact outdoor group. Bilateral ablation was a stronger inducer of molting than was unilateral ablation. The former treatment induced in both sexes the highest percentages of molting (65–100%) in shorter times, as well as a higher size increment at molting, regardless of the period when it was performed. During POST period, unilateral-ablated and intact crabs from both sexes also molted, females in a higher percentage than males. No spawning was recorded in females that had undergone bilateral ablation. Unilateral-ablated and intact females first spawned and then molted during R. Unilateral ablated females also had, during R period, up to two spawnings before molting, whereas the laboratory control crabs had only one. The laboratory-control and unilateral-ablated females spawned during PRE period, while none of the outdoor control did during that period. We conclude that: (1) bilateral ablation is a very strong inducer of molting for both sexes during any season of the year, (2) unilateral ablation increases the female reproductive output during the reproductive period, and (3) the laboratory conditions used in this study are capable of inducing spawning during the prereproductive period.

Affiliations: 1: a Lab. Fisiología Animal Comparada. Depto. Cs. Biológicas, FCEyN, Pab. II Ciudad Universitaria, 1428 Buenos Aires, Argentina


Full text loading...


Data & Media loading...

Article metrics loading...



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