Copepods adaptation

It is well recognised that parasite transmission is dependent on many ecological factors and it may be that copepods with a single procercoid may survive better and have larger and more fully differentiated procercoids than hosts with larger infections. Low-level infections may thus be an important adaptive strategy for transmission to the next host 711). 

Figure 26.3 Nitrogen contents (A) and C N ratio (B) of copepod species from low, medium, and high latitudes. S, shallow-water species D, deep-water species. (Adapted from Bamstedt, 1986).

Figure 26.4 Scatter diagram showing the relationship between dry weight and ammonia excretion rate for epipelagic marine copepods. The data points represent mean rates for all copepod species from each type of environment, Antarctic, Arctic, boreal, subtropical, and tropical (temperature range —1.7 to 29° C). (Adapted from Ikeda cf al., 2001).

Conover, R. J., and Hundey, M. (1991). Copepods in ice-covered seas. Distribution, adaptation to seasonally limited food, metabohsm, growth patterns and life cycle strategies in polar seas.J. Mar. Syst. 2, 1-41. 

Table 3.182 Fatty acids of copepod triglycerides and wax esters and of commercial fish oils (adapted from Ackman, 1980)... 

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