Freshwater ecosystems

The genus Laccotrephes Stål, 1865 has been known in Vietnam with four species, Laccotrephes grossus (Fabricius, 1787), Laccotrephes longicaudatus Nieser, Zettel & Chen, 2009, Laccotrephes pfeiferiae (Ferrari, 1888) and Laccotrephes simulatus Montandon, 1913. The species Laccotrephes robustus Stal, 1871 is a species endemic to the Philippines, first recorded in Vietnam from specimens collected in Cao Bang, Bac Kan and Nghe An provinces. The occurrence of L. robustus in Vietnam was confirmed by morphological and molecular data.

12p myhouse01 09-11-2024 0 0   Download

This study investigated the sublethal effects of salinity on four macroinvertebrate species commonly occurring in Australian freshwater ecosystems. These were; the introduced worm Lumbriculus variegatus Müller (Annelida: Oligochaeta), the introduced snail Physa acuta Draparnaud (Gastropoda: Physidae), the shrimp Paratya australiensis Kemp (Decapoda: Atyidae) and the midge Chironomus tepperi Skuse (Diptera: Chironomidae). The effects of salinity on growth, development and reproduction of these species were investigated through a series of laboratory tests.

202p runthenight07 01-03-2023 8 3   Download