Gelatinous-mantle
Guides
Holopedium gibberum
Holopedium gibberum is a planktonic cladoceran distinguished by a large gelatinous mantle that encloses the body. The species exhibits pronounced phenotypic plasticity in mantle size as an inducible defense against invertebrate predators, particularly Chaoborus larvae. Populations show strong sensitivity to fish predation pressure, with distribution patterns reflecting avoidance of high-predation environments. The species demonstrates seasonal population dynamics tied to food availability and predation regimes, with reproductive investment varying in response to environmental stressors.
Holopedium glacialis
A small freshwater cladoceran crustacean in the family Holopediidae. The species was described in 2007 from Nearctic material and is distinguished from congeners by genetic and morphological characteristics. Like other members of the genus, it possesses a distinctive gelatinous mantle that encloses the body.