The mechanisms of settlement success in coral reef fishes. Most marine fishes, including commercial species, produce larvae that disperse in the open ocean. The short period during which these larval fishes leave the open water and take up residence on adult benthic habitat (settlement) is critical in determining the success of the population, but is poorly understood. Settling larvae differ in their physical attributes, including body size and physiological condition, both of which affect the ....The mechanisms of settlement success in coral reef fishes. Most marine fishes, including commercial species, produce larvae that disperse in the open ocean. The short period during which these larval fishes leave the open water and take up residence on adult benthic habitat (settlement) is critical in determining the success of the population, but is poorly understood. Settling larvae differ in their physical attributes, including body size and physiological condition, both of which affect their vulnerability to predators and their ability to compete for food and grow. By looking closely at this short life history stage, we hope to better understand how the supply of offshore larvae controls the production of marine fishes, including commercial fisheries.Read moreRead less
Dispersal and gene flow in habitat-forming algae. The temperate coast of Australia has a unique and diverse algal flora. Many of these algae play a central role in subtidal ecology by providing habitat to an astonishing diversity of taxa. Despite this, we have no understanding of levels of gene flow within and among populations of habitat forming algae or how such populations persist in nature. By addressing this lack of knowledge, my research will contribute information that is critical for the ....Dispersal and gene flow in habitat-forming algae. The temperate coast of Australia has a unique and diverse algal flora. Many of these algae play a central role in subtidal ecology by providing habitat to an astonishing diversity of taxa. Despite this, we have no understanding of levels of gene flow within and among populations of habitat forming algae or how such populations persist in nature. By addressing this lack of knowledge, my research will contribute information that is critical for the conservation and management of algal habitats. This is particularly pertinent because anthropogentic stressors are beginning to precipitate significant changes in algal forests along Australia's coastline. Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0883055
Funder
Australian Research Council
Funding Amount
$170,000.00
Summary
Video analysis suite for the integrative analysis of resource acquisition behaviour in animals. How do animals find food, choose places to live and select mates? How do insect swarms and fish schools make collective decisions without leaders? These are fundamental questions in understanding the ecological roles and environmental impacts of endangered native and damaging invasive animals. The video analysis suite will be used to analyse the behaviour of such animals in environments from the land ....Video analysis suite for the integrative analysis of resource acquisition behaviour in animals. How do animals find food, choose places to live and select mates? How do insect swarms and fish schools make collective decisions without leaders? These are fundamental questions in understanding the ecological roles and environmental impacts of endangered native and damaging invasive animals. The video analysis suite will be used to analyse the behaviour of such animals in environments from the land to the deep-sea floor; track exceptionally fast movements during courtship and predator escape; study how animals achieve temperature balance in complex habitats; understand the dietary choices of herbivores, and discover the rules that govern the behaviour of swarms. Read moreRead less
Conservation ecology of the black cod (Epinephelus daemelii). Black cod is a large, reef fish species that was once common and commercially important in NSW. Today, Black Cod is listed as vulnerable, and we know little more of their biology than when they were first protected in 1983. This project will significantly increase the effectiveness of Black cod management by determining their distribution, abundance, stock structure, fecundity, spawning behaviour and recruitment. This will allow imple ....Conservation ecology of the black cod (Epinephelus daemelii). Black cod is a large, reef fish species that was once common and commercially important in NSW. Today, Black Cod is listed as vulnerable, and we know little more of their biology than when they were first protected in 1983. This project will significantly increase the effectiveness of Black cod management by determining their distribution, abundance, stock structure, fecundity, spawning behaviour and recruitment. This will allow implementation of an effective recovery plan and a review of the status of Black Cod internationally and by the Federal Government. Collaboration with NSW Fisheries' Grey Nurse Shark program will allow assessment of the importance of Grey Nurse critical habitat areas in maintaining Black Cod populations.Read moreRead less
Dispersal and colonisation in eukaryotes and prokaryotes. The problem of pest or disease organisms for humanity is fundamentally a problem of unwanted colonisation. For example, colonisation of the surfaces of human tissues by bacterial biofilms is responsible for up to 70% of bacterial infections; colonisation of the surfaces of boat hulls by marine organisms costs the marine shipping industry > $5 billion per year. This proposal will generate fundamental information on the ability of both bac ....Dispersal and colonisation in eukaryotes and prokaryotes. The problem of pest or disease organisms for humanity is fundamentally a problem of unwanted colonisation. For example, colonisation of the surfaces of human tissues by bacterial biofilms is responsible for up to 70% of bacterial infections; colonisation of the surfaces of boat hulls by marine organisms costs the marine shipping industry > $5 billion per year. This proposal will generate fundamental information on the ability of both bacteria and higher organisms to disperse and colonise surfaces, allowing for the development of novel technologies for the prevention of unwanted colonisation of surfaces. Read moreRead less
Dispersal and gene flow in habitat-forming algae. The temperate coast of Australia has a unique and diverse algal flora. Many of these algae play a central role in subtidal ecology by providing habitat to an astonishing diversity of taxa. Despite this, we have no understanding of levels of gene flow within and among populations of habitat forming algae or how such populations persist in nature. By addressing this lack of knowledge, my research will contribute information that is critical for the ....Dispersal and gene flow in habitat-forming algae. The temperate coast of Australia has a unique and diverse algal flora. Many of these algae play a central role in subtidal ecology by providing habitat to an astonishing diversity of taxa. Despite this, we have no understanding of levels of gene flow within and among populations of habitat forming algae or how such populations persist in nature. By addressing this lack of knowledge, my research will contribute information that is critical for the conservation and management of algal habitats. This is particularly pertinent because anthropogentic stressors are beginning to precipitate significant changes in algal forests along Australia's coastline. Read moreRead less
Intersexual arms races - are individuals within marine meta-populations less able to interbreed than assumed? A meta-population structure is thought to describe the inter-connected nature of many populations of marine animals with dispersive larvae. However, new theory predicts some of these populations might be not very inter-connected at all, despite larval migration. In some circumstances, independent, co-evolutionary arms races between sexes might develop within local populations, resulting ....Intersexual arms races - are individuals within marine meta-populations less able to interbreed than assumed? A meta-population structure is thought to describe the inter-connected nature of many populations of marine animals with dispersive larvae. However, new theory predicts some of these populations might be not very inter-connected at all, despite larval migration. In some circumstances, independent, co-evolutionary arms races between sexes might develop within local populations, resulting in individuals becoming increasingly less able to interbreed freely. I will directly test for this, measuring how successfully broadcast spawners can cross-fertilise across populations. This will reveal the genetic structure of these populations and if these animals really do live in a meta-population.Read moreRead less
Host plant choice by marine herbivores: ecological, genetic and historical constraints. Understanding the factors that determine plant choice by herbivores is crucial to predicting the ecological effects of herbivores on plants and herbivore adaptation to plants. This proposal aims to establish how evolution of host choice by a marine herbivore is constrained by ecological, genetic and historical factors. It will determine how the spatial arrangement of plants modifies host use, and whether evol ....Host plant choice by marine herbivores: ecological, genetic and historical constraints. Understanding the factors that determine plant choice by herbivores is crucial to predicting the ecological effects of herbivores on plants and herbivore adaptation to plants. This proposal aims to establish how evolution of host choice by a marine herbivore is constrained by ecological, genetic and historical factors. It will determine how the spatial arrangement of plants modifies host use, and whether evolutionary change by herbivores is constrained by genetic relationships among herbivore traits. The generality of important evolutionary hypotheses that predict plant choice by herbivores will be tested by extending such theory to new organisms and environments.Read moreRead less
Ontogeny of Behaviour and Sensory Abilities in Larvae of Marine Fishes. This project examines development of swimming performance, other behaviours and sensory abilities relevant to dispersal in larvae of a variety of marine fish species. Both laboratory and field methods will provide an overview of larval behaviour and sensory abilities throughout ontogeny. The extent to which morphological development explains these developmental differences in behaviour and sensory ability will be examined ....Ontogeny of Behaviour and Sensory Abilities in Larvae of Marine Fishes. This project examines development of swimming performance, other behaviours and sensory abilities relevant to dispersal in larvae of a variety of marine fish species. Both laboratory and field methods will provide an overview of larval behaviour and sensory abilities throughout ontogeny. The extent to which morphological development explains these developmental differences in behaviour and sensory ability will be examined in reared and wild individuals. This will provide direct evidence of when during the larval phase that fishes are able to actively modify dispersal patterns. This is important information for management of marine living resources and design of marine reserves.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: Le0883055
Funder
Australian Research Council
Summary
Video analysis suite for the integrative analysis of resource acquisition behaviour in animals. How do animals find food, choose places to live and select mates? How do insect swarms and fish schools make collective decisions without leaders? These are fundamental questions in understanding the ecological roles and environmental impacts of endangered native and damaging invasive animals. The video analysis suite will be used to analyse the behaviour of such animals in environments from the land ....Video analysis suite for the integrative analysis of resource acquisition behaviour in animals. How do animals find food, choose places to live and select mates? How do insect swarms and fish schools make collective decisions without leaders? These are fundamental questions in understanding the ecological roles and environmental impacts of endangered native and damaging invasive animals. The video analysis suite will be used to analyse the behaviour of such animals in environments from the land to the deep-sea floor; track exceptionally fast movements during courtship and predator escape; study how animals achieve temperature balance in complex habitats; understand the dietary choices of herbivores, and discover the rules that govern the behaviour of swarms. Read moreRead less