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Seasonal cycles of Notodelphys and Ascidicola, copepod associates with Ascidiella (Ascidiacea)
Author(s) -
Gage John
Publication year - 1966
Publication title -
journal of zoology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.915
H-Index - 96
eISSN - 1469-7998
pISSN - 0952-8369
DOI - 10.1111/j.1469-7998.1966.tb03005.x
Subject(s) - biology , copepod , population , ecology , host (biology) , fishery , zoology , crustacean , demography , sociology
The population cycles of the ascidicolous copepods Notodelphys allmani and Ascidicola rosea in Southampton Water were studied mainly by taking monthly samples (in 1962 and 1963) of their sea‐squirt “host”, Ascidiella aspersa. With N. allmani, young stages and the short‐livedm males appear in the summer when the total population greatly expands in number and nearly all of the AscidiellaMdash their numbers inflated by a fresh settlementMdashbecome “infected”. The Notodelphys population declines by wintertime when it is maintained by a few over‐wintering