Induction of diapause egg production in Eurytemora affinis by their own metabolites

Hydrobiologia ◽  
1994 ◽  
Vol 292-293 (1) ◽  
pp. 185-189 ◽  
Author(s):  
Syuhei Ban ◽  
Takashi Minoda
Keyword(s):  
Egg Production ◽  
Eurytemora Affinis

scholarly journals Egg production by the copepod, Eurytemora affinis, in Chesapeake Bay turbidity maximum regions

2013 ◽  
Vol 35 (2) ◽  
pp. 299-308 ◽  
Author(s):  
Scott S. Lloyd ◽  
David T. Elliott ◽  
Michael R. Roman
Keyword(s):  
Chesapeake Bay ◽  
Egg Production ◽  
Turbidity Maximum ◽  
Eurytemora Affinis

Salinity effects on egg production, hatching, and survival of Eurytemora affinis (Copepoda, Calanoida)

Crustaceana ◽  
2020 ◽  
Vol 93 (3-5) ◽  
pp. 429-445 ◽  
Author(s):  
Lauri Kuismanen ◽  
Louise Forsblom ◽  
Jonna Engström-Öst ◽  
Ulf Båmstedt ◽  
Olivier Glippa
Keyword(s):  
Body Size ◽  
Baltic Sea ◽  
Egg Production ◽  
Mixed Model ◽  
Linear Mixed Model ◽  
Salinity Range ◽  
The Baltic Sea ◽  
Eurytemora Affinis ◽  
Optimal Salinity ◽  
The Baltic

Abstract Salinity is an important biodiversity regulating factor in the Baltic Sea, forming a physiological dispersal barrier for species. The salinity in the Baltic Sea has been predicted to decline due to increased precipitation and fewer saline water inflows from the ocean. This causes stress to species already living on the edge of their tolerances and can alter species compositions and interactions in ecosystems. Calanoid copepod resting eggs, originating from a known egg bank on the seabed in the western Gulf of Finland, were incubated in the laboratory. We monitored the hatching of the calanoid copepods Acartia sp. and Eurytemora affinis, as well as the survival to maturity of hatched Eurytemora affinis nauplii in salinities ranging from 0 to 25. Further, we also investigated salinity-related effects on body size and egg production. Based on the results of our generalized linear mixed model, peak hatching occurred within the salinity range 5-20 (6.3 at the study site). Body size was not affected by salinity and most eggs were produced in salinities of 5, 7.5 and 15. The results suggest that E. affinis lives on the edge of an optimal salinity and that a decline of salinity could affect the fitness of the local populations of the species.

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