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

EFFECT OF PHOTOPERIOD ON EMBRYOGENESIS AND GROWTH RATE IN IDOTEA BALTICA (ISOPODA)

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 Photoperiodic effects on the duration of embryo development and on early growth rate in juveniles was carried out in a population of Idotea baltica. Two biological parameters showing seasonal fluctuations in the field were investigated in (a) individuals (G,) born from females collected in nature during mating and then bred in the laboratory, and (b) individuals (G2) born from females of group G,, which had been mated in the laboratory. A longer light period (LD 16:8) reduced embryo development duration, while a shorter one (LD 12:12) increased it. Under the same laboratory conditions, the growth rate in juveniles until the sixtieth day of life was increased by long daylight and reduced by a shorter light period. Seasonal variations observed in the field appeared to depend essentially on day-length regime, since the ecological conditions of the habitat did not show remarkable changes in biotic factors, particularly in the quality and quantity of food available during the year. Sensitivity to photoperiod may represent a strategy used by this species to overcome unfavorable environmental conditions.

Affiliations: 1: (CG) Dipartimento di Gcnctica, Biologia Generale e Molecolare, Universita di Napoli, Via Mezzocannone,8, 80134 Napoli, Italy; 2: (SMG) Istituto per lo Studio degli Ecosistemi Costieri, CNR di Lesina, Via Pola, 4, 71010 Lesina, Foggia, Italy.; 3: (CD) Dipartimento di Gcnctica, Biologia Generale e Molecolare, Universita di Napoli, Via Mezzocannone,8, 80134 Napoli, Italy; 4: (MdN) Dipartimento di Gcnctica, Biologia Generale e Molecolare, Universita di Napoli, Via Mezzocannone,8, 80134 Napoli, Italy

Loading

Full text loading...

/content/journals/10.1163/1937240x97x00242
Loading

Data & Media loading...

http://brill.metastore.ingenta.com/content/journals/10.1163/1937240x97x00242
Loading

Article metrics loading...

/content/journals/10.1163/1937240x97x00242
1997-01-01
2016-12-06

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