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Fig.18.A.Combinationofparthenogeneticandsexualcyclesinrotifers(afterPILARSKA1972)
asingle,equalcleavagewithasinglepolarbody(GILBERT1980c).Themonogon-
ontreproductioninvolvesmainlyamictic(parthenogenetic)femaleswhichlay
diploideggshatchingtoproduceamicticfemales(telytoky).Havingreceivedan
appropriatesignal,i.e.,triggeredbyasuitablecue(temperature;excessiveden-
sity,qualityandquantityoffood;orageneticcue),thosefemalesmaygenerate
micticoffspringwhichmeioticallyproduceshaploideggs.Insomespecies,amic-
ticfemalesarecapableofsimultaneouslyproducingmicticandamicticprogeny
(daughters).Insuchcases,themicticfemalesproducemaleeggs,smallerand
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