Our recommendations for reducing the abundance of non-native invertebrates follow many of the guidelines described for non-native fishes. Few introduced species were found on the Cosumnes River Floodplain, although analogous floodplain habitats such as the Yolo Bypass further towards San Francisco Bay reinforce our recommendations. We found the red swamp crayfish Procambarus clarkii in signific...

Introduced organisms are seen as one of the greatest threats to resource sustainability worldwide, and aquatic macroinvertebrates regarded good indicators health water resources. To explore these two perspectives, responses macroinvertebrate faunas native introduced fishes in three headwater tributaries Keiskamma River system, South Africa, were examined by comparing potential indicator communi...

The Asian fish tapeworm Bothriocephalus acheilognathi (Cestoda: Bothriocephalidea) is an introduced fish parasite in the southwestern United States and is often considered a serious threat to native desert fishes. Determining the geographic distribution of nonnative fish parasites is important for recovery efforts of native fishes. We examined 1,140 individuals belonging to nine fish species fr...

Present haematological study deals with determination of EUS infection in fresh water fishes of Warangal district. The three lakes selected for study were Dharmasagar, Hasanparthy and Bhandham. From each lake 100 fishes (Channa straitus) of both control and infected were collected for the study. Haematological parameters were estimated in control and infected fishes. Results reveal that in comp...

Ecological theory attempts to predict how impacts for native species arise from biological invasions. A fundamental question centres on the feeding interactions of invasive and native species: whether invasion will result in increased interspecific competition, which would result in negative consequences for the competing species, or trophic niche divergence, which would facilitate the invader'...

Non-native freshwater fishes have been introduced to Guatemalan ecosystems since the beginning of last century without prior risk assessment or subsequent evaluation their impacts. We synthesized historical records, and distributional data from a literature review, online databases museum records non-native in Guatemala. found for 22 with oldest dating back 1926. were recorded 64% river sub-bas...