Biometrical Analysis of Populations ofArmadillidium SiculorumVerhoeff,Armadillidium Badium BadiumB.L. andArmadillidium Badium PelagicumArcangeli (Crustacea, Isopoda Oniscoidea)

New Terrestrial Isopods of the Genus Miktoniscus from Eastern United States (Crustacea: Isopoda: Oniscoidea)

Phylogeography of subterranean and surface populations of water lice Asellus aquaticus (Crustacea: Isopoda).

The water louse Asellus aquaticus is a widespread, euryoecious species, mostly uniform throughout its range. However, six subspecies are known from the Dinaric karst in the northwestern Balkans. They include some specialized subterranean populations. The pattern of genetic variation among subterranean and surface populations in this hydrographically highly fragmented karst region was investigat...

Selectivity of Idothea chelipes (Crustacea: Isopoda) grazing on benthic microalgae

Periphyton grazing by the marine isopod Idothea chelipes was studied by exposing periphyton grown on glass slides to a gradient of grazer densities. An analysis of the algal growth rates and their relationships to grazer density revealed two groups of algae. The unicellular diatoms Licmophora ehrenbergii, Fragilaria tabulata, Navicula spp., Cocconeis costata, and the green alga Ulothrix implexa...

Redescription of five gnathiid species from Japan (Crustacea: Isopoda).

Five gnathiid species from Japan are redescribed based on14 holotypes, their paratypes, topotypes, and new materials. Observations of these specimens revealed that Caecognathia kikuchii (Nunomura, 1992) should be transferred to genus Elaphognathia and Caecognathia nasuta (Nunomura, 1992) to genus Gnathia. Furthermore, Caecognathia amakusaensis Nunomura, 1992, C. saikaiensis Nunomura, 1992, Gnat...

Carotenoids and carotenoproteins in Asellus aquaticus L. (Crustacea: Isopoda).

Column (CC), thin-layer (TLC), high-performance liquid (HPLC) and ion-exchange chromatography (IEC), were used to investigate corotenoid and carotenoprotein complexes in Asellus aquaticus specimens from the Narew river. The following carotenoids were found: alpha-carotene, beta-carotene, beta-cryptoxanthin, lutein, zeaxanthin, diadinoxanthin, mutatoxanthin, crustaxanthin, echinenone, hydroxyech...