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

MONTHLY DIFFERENCES IN DISTRIBUTIONS OF SEX AND ASYMMETRY IN A LOOKING-GLASS COPEPOD, PLEUROMAMMA XIPHIAS, OFF HAWAII

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 We studied frequencies of several attributes of the reproductive cycle of Pleuromamma xiphias, an oceanic, calanoid copepod taken in replicate monthly samples over a 13-month period at a station off Hawaii. Large numbers of late copepodids in these samples allowed us to confidently describe monthly changes in these frequencies despite variability among replicate samples taken within 36 h. The percentage of males among different copepodids of P. xiphias decreased from copepodid stage IV to CV and from CV to CVI. The percentage of left females, a sex-limited dimorphism in the condition of asymmetry of an animal, increased from CIV to CV but decreased from CV to CVI. The magnitude of the changes in the percentage of left females was not as great as changes in the percentage of males. Monthly averages for these attributes suggested differential recruitment to CVI males and left females in May when the percentage of CVI females without a dark mass in the genital opening also was high, but when abundances of CVI, CV, and CIV animals were low; the percentage of CVI males with a spermatophore in the spermatophore sac reached a maximum earlier, in February. We compared our data about the percentage of males to similar information for other calanoid copepods, and conclude that documenting the ranges of this attribute among consecutive copepodid stages is more useful in describing the seasonal distribution of sex than calculating an average value for adults.

Loading

Full text loading...

/content/journals/10.1163/193724090x00294
Loading

Data & Media loading...

http://brill.metastore.ingenta.com/content/journals/10.1163/193724090x00294
Loading

Article metrics loading...

/content/journals/10.1163/193724090x00294
1990-01-01
2016-12-10

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