Skip to main content

Free Content Reproductive Periodicities of Indo-Pacific Invertebrates in the Gulf of Suez. IV. The Chitons Acanthopleura Haddoni Winckworth and Onithachiton Lyelli (Sowerby), and the Abalone Haliotis Pustulata Reeve

Download Article:
 Download
(PDF 669.6220703125 kb)
 

Abstract:

The widespread intertidal tropical molluscs Acanthopleura haddoni and Haliotis pustulata reproduce with synchronized seasonal cycles in the seasonally fluctuating environment of the northern Gulf of Suez. In both species, gametogenesis begins in the spring during the period of increasing air and sea temperatures, and spawning occurs in the summer during the warmest time of the year. Reproduction of Onithochiton lyelli also occurs mainly in the summer in the Gulf of Suez, but appears to be much less synchronous and ripe animals were found during most of the year. Samples of both H. pustulata and O. lyelli had significantly biased sex ratios with more males than females. Samples taken 350 km south in the northern Red Sea, where seasonal environmental fluctuations are more moderate, indicate different seasonal patterns of reproduction in A. haddoni and H. pustulata, with winter spawning in the latter.

Document Type: Research Article

Publication date: 1978-01-01

More about this publication?
  • The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • Terms & Conditions
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free ContentFree content
  • Partial Free ContentPartial Free content
  • New ContentNew content
  • Open Access ContentOpen access content
  • Partial Open Access ContentPartial Open access content
  • Subscribed ContentSubscribed content
  • Partial Subscribed ContentPartial Subscribed content
  • Free Trial ContentFree trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more