Trypetoptera canadensis (Macquart), a floodplain predator of pulmonate
terrestrial snails, were found precisely where that species would be expected to occur--in the vernally flooded zone between the artificial levee and the natural sand dike along White River.
Its larvae are polyphages of freshwater pulmonate
snails and egg masses of Lymnaea species (Knutson & Berg 1963).
Among soil invertebrates, pulmonate
gastropods are frequently described as bioindicators for the assessment of pollution by metallic elements and pesticides in terrestrial ecosystems [33, 34].
We tested the multiplicative risk model for emergent multiple predator effects on the mortality of freshwater pulmonate
snails (Physa acuta) using giant water bugs (Belostoma flumineum) and crayfish (Procambarus zonangulus) as predators.
1934, "Limnological investigation on respiration, annual migratory cycle and other related phenomena in freshwater pulmonate
snails," Tansactions of the American Microscopical Society, 53, 348.
The results of this experiment, in conjunction with other studies, demonstrate that estrogenic chemicals that cause reproductive effects in vertebrates and other aquatic animals also have effects in the fresh water pulmonate
Comparative conservation ecology of pleurocerid and pulmonate
gastropods of the United States.
when they were cruelly assaulted by jets of allium sativum-enhanced dairy condiments propelled from deceased pulmonate
gastropod mollusks, quite likely the helix pomatia variety.
Philomycus is a pulmonate
slug genus with eight species previously recognized in the United States, where the natural distribution lies entirely in the eastern half of the country as far west as Nebraska, with several of these slugs apparently highly endemic (Branson 1968; Hubricht 1985).
japonica did not group with other marine schistosomes, but belong to the BTGD clade that, until now, included only freshwater species that use pulmonate
snails as intermediate hosts (Figure 5).
Additionally, the detection of copper granules by the histochemical staining of hepato-pancreas in the pulmonate
garden snail, Cryptozona ligulata, potentially reveals the existence of a copper store, probably complexed with metallothioneins, that could be possibly recruited for Hcy biosynthesis (Fig.
THE EFFECTS OF WATER POLLUTION ON PULMONATE
AND PROSOBRANCH SNAIL POPULATIONS.