Phylogeny and radiation of flatworm ectoparasites from marine fish using morphology and genetics, with novel approaches to identify pathogenic species. Fish flukes (flatworm parasites) with direct lifecycles can weaken and kill captive fish and threaten lucrative industries like finfish aquaculture and public aquaria in Australia and globally. Traditional approaches and molecular techniques will identify monogenean flukes in a family containing known pathogenic species distributed worldwide. K ....Phylogeny and radiation of flatworm ectoparasites from marine fish using morphology and genetics, with novel approaches to identify pathogenic species. Fish flukes (flatworm parasites) with direct lifecycles can weaken and kill captive fish and threaten lucrative industries like finfish aquaculture and public aquaria in Australia and globally. Traditional approaches and molecular techniques will identify monogenean flukes in a family containing known pathogenic species distributed worldwide. Knowledge of fish disease is paramount for quarantine, risk assessments for import/export and for managing pathogen outbreaks in aquaculture. Benefits include: economic/social improvements in regional/rural Australia where fish farms are expanding; international excellence and core research training in fish parasitology; profitable, exportable expertise; knowledge of endemic and shared pathogens.Read moreRead less
Do crayfish use the information carried by low-level electrical signals in the environment? Many vertebrates detect electric fields. Fish communicate electrically. No invertebrate has been shown to do so. We have evidence that crayfish change their behaviour following exposure to low-level, waterborne electrical signals. Crayfish behaviour is currently the preferred model for studying the neurobiology of social hierarchies in animals. Evidence that information is passing from either predators or ....Do crayfish use the information carried by low-level electrical signals in the environment? Many vertebrates detect electric fields. Fish communicate electrically. No invertebrate has been shown to do so. We have evidence that crayfish change their behaviour following exposure to low-level, waterborne electrical signals. Crayfish behaviour is currently the preferred model for studying the neurobiology of social hierarchies in animals. Evidence that information is passing from either predators or conspecifics through an undescribed electrosensory channel would fundamentally change the direction of that research. Behaviour modification using electrical signals could also prove to be a valuable tool in crustacean aquaculture. This is a proposal to discover the nature and behavioural implications of crayfish electroreception.Read moreRead less