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Feeding and digestion in tropical rock lobster phyllosoma larvae and its applications for culture. Provision of larval culture diets that provide optimal nutrition in a suitable presentation format is the major challenge for developing a rock lobster aquaculture industry. Tropical rock lobsters are likely contenders due to their faster growth rates and shorter larval phase than temperate species. This project will assess the ingestive and digestive capabilities of larvae during development, thro ....Feeding and digestion in tropical rock lobster phyllosoma larvae and its applications for culture. Provision of larval culture diets that provide optimal nutrition in a suitable presentation format is the major challenge for developing a rock lobster aquaculture industry. Tropical rock lobsters are likely contenders due to their faster growth rates and shorter larval phase than temperate species. This project will assess the ingestive and digestive capabilities of larvae during development, through an examination of mouthpart and gut structure and their types and concentration of digestive enzymes. Information will be used to formulate and test improved diets of appropriate size, texture and nutritional composition and will be the first comprehensive analysis of preferred larval diets on the basis of their biological and physiological characteristics.Read moreRead less
Field based molecular diagnostics for identification of plant parasitic nematodes. Nematodes are economically important pests of many agricultural and commercially grown plants. We have shown 'proof-of-concept' that plant parasitic nematodes can be identified by protein profiling using MALDI-TOF mass spectroscopy. In this project advanced techniques of proteomics and associated bioinformatics will be used to identify, isolate and characterise proteins that are specific to economically important ....Field based molecular diagnostics for identification of plant parasitic nematodes. Nematodes are economically important pests of many agricultural and commercially grown plants. We have shown 'proof-of-concept' that plant parasitic nematodes can be identified by protein profiling using MALDI-TOF mass spectroscopy. In this project advanced techniques of proteomics and associated bioinformatics will be used to identify, isolate and characterise proteins that are specific to economically important nematode species and races, and to identify diagnostic proteins or epitopes. The diagnostic proteins will be used to generate specific monoclonal antibodies that will be incorporated into immunochemical 'Lateral Flow' devices. These will provide on-site tests to identify nematodes for growers and quarantine services. Read moreRead less
Combinatorial controlled gene expression delivering crops resistant to nematodes. Root-knot nematodes cause US$130 billion crop losses worldwide pa, and at least AUS$ 450 pa in Australia. Current control methods involve fumigation, chemicals (mainly carbamates and organophosphates), natural plant resistance and biological control. The fumigants (eg methyl bromide) are being phased out because they damage the ozone layer, most of the non-fumigants are being banned because of environmental damag ....Combinatorial controlled gene expression delivering crops resistant to nematodes. Root-knot nematodes cause US$130 billion crop losses worldwide pa, and at least AUS$ 450 pa in Australia. Current control methods involve fumigation, chemicals (mainly carbamates and organophosphates), natural plant resistance and biological control. The fumigants (eg methyl bromide) are being phased out because they damage the ozone layer, most of the non-fumigants are being banned because of environmental damage and persistence in groundwater, and biological control has had limited success. These problems are addressed in this project with development of synthetic plant resistance to nematodes, which will benefit horticultural and broadacre farming by reducing pathogen losses and improving quality.Read moreRead less
The nature and consequences of environmentally-generated phenotypic variation in natural populations. The ambient environment can generate both heritable and non-heritable variation in individual traits, but the role of such variation in evolution is poorly understood. This project will use a powerful model organism, the Australian neriid flies, to elucidate the evolutionary implications of environmentally-generated variation.
The diversity and assembly of optics in nature. Optics, such as the design of new coloured reflectors, is a research strength for Australia. A reason for this is the potential for application - optical devices can be found far and wide in our everyday lives, from security devices on banknotes (holograms), to computer monitors (LCDs). An interesting parallel exists in nature - animals possess similar optical devices to those we use. So it makes sense to examine the animals' devices in a search fo ....The diversity and assembly of optics in nature. Optics, such as the design of new coloured reflectors, is a research strength for Australia. A reason for this is the potential for application - optical devices can be found far and wide in our everyday lives, from security devices on banknotes (holograms), to computer monitors (LCDs). An interesting parallel exists in nature - animals possess similar optical devices to those we use. So it makes sense to examine the animals' devices in a search for new reflectors, and that's an aim of this project. And since reflectors are often difficult to make, why not let animals make reflectors for us? That is a further aim of this project. Soon we may have genetically-altered butterfly scales embedded in our credit cards that cannot be counterfeited.Read moreRead less
Conservation genomics of a critically endangered insect. This project aims to develop tools genotyping large animal genomes, focusing on the case of the Lord Howe Island stick insect, once thought to be extinct and now critically endangered. This project expects to generate molecular tools to monitor the genetic health the insect which has a large, complex and poorly understood genome. Expected outcomes include the development of a preservation and reintroduction strategy for the insect. This pr ....Conservation genomics of a critically endangered insect. This project aims to develop tools genotyping large animal genomes, focusing on the case of the Lord Howe Island stick insect, once thought to be extinct and now critically endangered. This project expects to generate molecular tools to monitor the genetic health the insect which has a large, complex and poorly understood genome. Expected outcomes include the development of a preservation and reintroduction strategy for the insect. This project will benefit ongoing conservation efforts, and is timely given the ongoing eradication of rats from Lord Howe Island where this species once lived. Read moreRead less
Signal manipulation in orb-web spiders. A number of diverse orb-web spiders adorn their webs with conspicuous silk bands called decorations or stabilimenta. Their function remains controversial, but they may act as a visual signal to either attract prey, deter predators or prevent web damage by large non-prey animals. We will test these hypotheses on several Australian orb-web species using field and laboratory experiments. Furthermore, we will investigate the effect of web decorations on specie ....Signal manipulation in orb-web spiders. A number of diverse orb-web spiders adorn their webs with conspicuous silk bands called decorations or stabilimenta. Their function remains controversial, but they may act as a visual signal to either attract prey, deter predators or prevent web damage by large non-prey animals. We will test these hypotheses on several Australian orb-web species using field and laboratory experiments. Furthermore, we will investigate the effect of web decorations on species radiation and hence diversity using molecular techniques to establish phylogenies. This will, at least in part, help resolve this century old debate surrounding web decorations.Read moreRead less
Evolution of maternal provisioning in echinoderms: characterisation of egg nutrients and their roles in development. In the complex life histories of marine invertebrates modification of maternal provisioning lies at the nexus between the evolution of development and speciation in the sea. This project investigates the relationship between egg nutritive profile and developmental mode in echinoderms. It uses the Patiriella sea stars, a powerful model to examine evolution of egg constituents in a ....Evolution of maternal provisioning in echinoderms: characterisation of egg nutrients and their roles in development. In the complex life histories of marine invertebrates modification of maternal provisioning lies at the nexus between the evolution of development and speciation in the sea. This project investigates the relationship between egg nutritive profile and developmental mode in echinoderms. It uses the Patiriella sea stars, a powerful model to examine evolution of egg constituents in ancestral-type developers with small eggs and derived developers exhibiting multiple parallel evolution of large eggs. This project provides insights into evolutionary fine-tuning of oogenesis and its influence on larval type and location of development, features that strongly influence the biogeography of marine invertebrate populations.Read moreRead less
Co-divergence or opportunism: the evolution of trematode parasitism in the sea. This proposal is for fundamental research into how a major group of parasites (trematodes) has evolved in interaction with its hosts. The work is mainly the kind of 'basic science' that underpins other science without having intended immediate community benefit. However, the work depends strongly on the important task of developing better knowledge of trematodes in Australian native animals. Some of these parasite ....Co-divergence or opportunism: the evolution of trematode parasitism in the sea. This proposal is for fundamental research into how a major group of parasites (trematodes) has evolved in interaction with its hosts. The work is mainly the kind of 'basic science' that underpins other science without having intended immediate community benefit. However, the work depends strongly on the important task of developing better knowledge of trematodes in Australian native animals. Some of these parasites are pathogens of bivalves (scallops, giant clams and oysters) but almost nothing is known about them here. Another benefit of the study is in the training of several postgraduate students who will be able to contribute to the further study and management of parasites in Australia.Read moreRead less
The link between environmental stress and disease onset in prawn aquaculture. The federal government has set a target for prawn aquaculture production to increase fourfold by 2010. A major barrier is disease: losses of 20% of production to viral diseases are not uncommon. To be internationally competitive, Australia needs to develop high health production systems. Most prawn stock carry chronic viral infections, but only exhibit disease symptoms following environmental stress. This project will ....The link between environmental stress and disease onset in prawn aquaculture. The federal government has set a target for prawn aquaculture production to increase fourfold by 2010. A major barrier is disease: losses of 20% of production to viral diseases are not uncommon. To be internationally competitive, Australia needs to develop high health production systems. Most prawn stock carry chronic viral infections, but only exhibit disease symptoms following environmental stress. This project will identify environmental stressors that activate viral disease in Penaeus monodon. Outcomes will be incorporated into on-farm managerial regimes to minimize risk of crop loss to disease. Development of biomarkers as indicators of stress related risks may be commercialized.Read moreRead less