The variability in percent of crushed shells in both slender-shaped Hornsnails (
Pleuroceridae, 0-80%) and more globular shaped river snails (Viviparidae, 3-65%) that we observed (Table 2) supports the premise that black carp can detect size and shape of gastropod diet items.
In Brazil, the most common gastropods belong to the families Planorbidae, Ampullariidae, Hydrobiidae, Thiaridae and
Pleuroceridae (Drugg-Hahn et al., 2007) and practices such as barrier construction, canalization, drainage and pollution of water bodies, especially by the indiscriminate use of pesticides in crops, have contributed to the destruction of the natural habitat of many species, causing their disappearance, as observed in several records of anthropogenic actions over time (Mansur et al., 2003; Allan, 2004; Souza & Melo, 2012; Muller, Granada & Sperotto, 2016).
In pools, the most abundant group decreased by 94.6% after the spate (
Pleuroceridae), but the second most abundant group actually increased by 43.0% (Chironomidae) (Table 3).
A large number of Bithyniidae (Reesidella montanaensis) and possible
Pleuroceridae (Circamelania ortmanni) are reported, representing almost 97% of the specimens identified.
Hayes, "Large differences over small distances: plasticity in the shells of Elimia potosiensis (Gastropoda:
Pleuroceridae)," International Journal of Biology, vol.
Prey families identified in the analysis were: Ceratopogonidae, Chironomidae, Ephemeridae, Siphlonuridae, Gomphidae and Belostomatidae (Insecta); Cymothoidae and Palaemonidae (Malacostraca); Pisidiidae (Bivalvia);
Pleuroceridae (Gastropoda) and Sciaenidae (Osteichthyes).
Pleuroceridae is a highly endangered family of freshwater gastropods with >50% of the species endangered or extinct (Brown et al.
camurum to eat the aquatic snail Elimia livescens (Menke) of the Family
Pleuroceridae. It appeared that the fish's gape size was too small to consume the snails, which were about 8 mm in length.
Molluscs included Bivalvia (Sphaeriidae, Corbiculidae), and Gastropoda (
Pleuroceridae, Hydrobiidae, Planorbidae, Ancylidae, Physidae).
Morphology of Elimia livescens (Mollusca:
Pleuroceridae) in Indiana, U.S.A.
Superfamily Cerithioidea Fleming, 1822; Family
Pleuroceridae P.