EurekaMag.com logo
+ Site Statistics
References:
53,869,633
Abstracts:
29,686,251
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on LinkedInFollow on LinkedIn

+ Translate

Oocyte development and spawning frequency in the south west african pilchard sardinops ocellata



Oocyte development and spawning frequency in the south west african pilchard sardinops ocellata



Fisheries Bulletin South Africa (12): 53-68



Spawning frequency in the South West African pilchard S. ocellata was investigated. The study was based on the diameter distribution of yolked oocytes in relation to the stage of development. Two size classes of yolked oocytes were found; apparently 2 batches could be spawned within a season. The presence of unimodal ovaries during the 2nd half of the spawning season suggested that some ovaries were maturing after the most advanced size class had been shed.

(PDF emailed within 1 workday: $29.90)

Accession: 006035053

Download citation: RISBibTeXText



Related references

Gonad development and spawning frequency of the South African pilchard Sardinops sagax during the 1993-1994 spawning season. South African Journal of Marine Science, 17: 183-193, 1996

The South African pilchard (Sardinops ocellata). The development of the snoek (Thyrsites atun), a fish predator of the pilchard. Investigational Report Division of Fisheries South Africa, 19: 1-11, 1955

Influence of salinity, temperature and dissolved oxygen on embryonic development of the south-west African pilchard, Sardinops ocellata. Occasional. Bull zool Soc sth Afr, 1: 51, 1977

The Pilchard of South-West Africa Age studies and age composition of Sardinops ocellata in the commercial catches, 1952-1958 and a new method for the determination of the age of Sardinops ocellata. 1958

Influence of temperature dissolved oxygen and salinity on incubation and early larval development of the south west african pilchard sardinops ocellata. South Africa Sea Fisheries Branch Investigational Report (114): 1-35, 1977

The pilchard of South West Africa (Sardinops ocellata). Age composition of Sardinops ocellata in the commercial catches 1958 and 1959 with reference to a change in rate of growth. Investigational Report Marine Research Lab SW Africa, 6: 1-33, 1962

A method of age determination for the south west african pilchard sardinops ocellata. South African Journal of Marine Science (2): 63-70, 1984

The pilchard of South-West Africa (Sardinops ocellata). Temperature: Its annual cycles and relation to wind and spawning. Invest Rep mar Res Lab SW Africa No, 9: 1-57, 1963

Cleaning and staining techniques for age material of the South West African Pilchard, Sardinops ocellata. Journal - SWA Scientific Society 28(28): 53-65, 1974

The South African pilchard (Sardinops ocellata). Preliminary report on feeding off the west coast, 1953-56. Investigational Report Division of Fisheries South Africa, 30: 1-40, 1957

Feasibility of assessing the size of the south west african pilchard sardinops ocellata stock by combined aerial and acoustic measurements. Fisheries Bulletin South Africa (11): 10-22, 1979

Distribution and relative abundance of eggs of the south west african pilchard sardinops ocellata and anchovy engraulis capensis 1971 1972. Fisheries Bulletin South Africa 9: 23-31, 1977

The South African pilchard (Sardinops ocellata), development, occurrence and distri-bution of eggs and larvae, 1950-51. Investigational Report Fisheries and Marine Biological Survey South Africa, 15: 1-28, 1954

The South African pilchard Sardinops ocellata. Bird predators 1953-54 Invest Rep Div Fish S Afr, 18: 1-32, 1955

The pilchard of South West Africa (Sardinops ocellata). Sexual development, condition factor and reproduction. 1957-1960. Investigational Report Marine Research Lab SW Africa, 1-96, 1964