Dynamic Consequences of Species Interactions in A Dynamic Parasite Model CSS Workshop Presentation 2005 Joanne Lello, Susan McClure (CSIRO LI) Andrew Fenton.

Slides:

Advertisements

Similar presentations

KEY CONCEPT Organisms interact as individuals and as populations.

Advertisements

Niche & Community Interactions

Ecology Interactions.

ORGANIZATION IN THE BIOSPHERE. WHAT DOES BIOLOGY MEAN?  THE STUDY OF LIVING THINGS WE’VE LOOKED AT THE BUILDING BLOCKS OF LIVING THINGS… BUT WHERE DO.

WHAT HAPPENS TO THOSE LARVAE ANYWAY?

IWMGQSG, December 8 – 11, 2003, Toulouse QUANTITATIVE TRAIT LOCI FOR PARASITE RESISTANCE Sonja Dominik CSIRO Livestock Industries Armidale.

Biotic Factors Science 10. Biotic factors  Are factors that affect the living environment and include all other organisms that interact with the individual.

Community Ecology Chapter 47 Mader: Biology 8th Ed.

Community Interactions. Community group of different populations living in the same ecosystem. includes all of the living things in an ecosystem.

Interactions of Living Things

H Pyramid of Numbers H Ecological Relationships H Population Dynamics Follow-Me – iQuiz.

What shapes an ecosystem? TSW identify and describe interactions between individuals in a community.

Populations Section #2: How Species Interact With Each Other.

Ch 8 Negative species interactions— infection and parasitism Pathogens and parasites have negative impacts on species Compartment models are useful for.

UNIT VOCABULARY & NOTES Stability and Change. Ecological succession (succession) Process in which communities of plant and animal species in a particular.

AP Biology Population Ecology population ecosystem community biosphere organism.

POPULATION ECOLOGY Tabitha Walton and Heath Edwards.

Population – group of individuals of the same species living in the same area, potentially interacting Community – group of populations of different species.

Other Interspecific Interactions Chapter 7. Interspecific Interactions Symbiosis - intimate association between individuals of different species, in which.

Ecological Interactions

4-2: What Shapes an Ecosystem? Biology 1. Ecology tell you where an organism lives Ecology also tells you about the climate What shapes the ecosystem.

What Is a Population? All the members of a species living in the same place at the same time –a reproductive group –Refers to the group in general and.

20.1: Species Interactions, cont.

Life Science MCA Power Point Review **RESEARCH: With your partner, do the necessary research to complete the topic you were assigned & fill in your topic's.

Understanding PopulationsSection 2 Objectives Explain the difference between niche and habitat. Describe the five major types of interactions between species.

Vocabulary Review Ch 20 Community Ecology. A relationship between two species in which one species, the predator, feeds on the other species, the prey.

BELLRINGER: 1. List five reasons why organisms would compete with each other. Put this in the second box of your bellringer page.

Community Interactions AP Biology AP Biology

Population Dynamics 2: Factors That Regulate Natural Populations.

What shapes an ecosystem? Section 14-1 habitat & niche.

Interactions within Communities. A community consists of all populations of different species that interact together in a given ecosystem. Some organisms.

Biological Niche An organism’s Niche describes the full biotic and abiotic conditions in which an organism lives – Biotic factors: Predators Prey competition.

Community Ecology Ms. Klinkhachorn September 29, 2010 AP Biology.

Hymenolepiasis nana.

Lesson 4: Relationships in Ecosystems Science Chapter 4.

Understanding Populations

20.1: SPECIES INTERACTIONS (SYMBIOSIS). Symbiosis- close ecological relationship between two or more organisms of different species that live in direct.

Zalophus californianus Felis domesticus Dinofilariasis.

DR. HANA OMER. Symbiotic Relationships Symbiosis means “to live together” Describes the relationship between microorganisms and their host Three types.

Second lecture Carrying capacity Carrying capacity is the maximum population size that a particular environment can sustain. more food carrying less.

Ecosystem Interactions Interactions The organisms in a community are capable of interacting with each other in some very complex ways. – They can: Hurt.

Relationships among Populations. Before watching the video, take time to read over all the questions in the activity page Before watching the video, take.

Population Ecology Chapter 4. GPS SB4 Students will assess the dependence of all organisms on one another and the flow of energy and matter within their.

IBM meets traditional population ecology IBM  behavioural patterns  life history variation  population level responses (ecology, genetics) What are.

LO’s - the meaning of ecology, population symbiotic relationships - can explain population demographics and ways in which population sizes are regulated.

Population Ecology Mrs. Gamari. Ecology  The study of the interaction between organisms and their environment (living and non-living).  Biotic – living.

14.4 Population and Growth Patterns TEKS 11B, 12A, 12D The student is expected to: 11B investigate and analyze how organisms, populations, and communities.

Population Interactions.  Ecosystems are made of many populations living together  How do populations live together? ◦ 5 types community interactions.

The Web of Life: Interactions among living organisms Populations Interactions in Communities.

Living Together: Community Interactions. Symbiosis “Sym—biosis” = “Together—Living” Definition: Symbiosis is a close ecological relationship between the.

Symbiosis Mutualism | Commensalism | Parasitism Learning Objectives

COMMUNITIES HOW DO COMMUNITIES OF ORGANISMS INTERACT WITH EACH OTHER?

HOW DO COMMUNITIES OF ORGANISMS INTERACT WITH EACH OTHER?

Chapter 8. What is a population? The given number of a given species in a given area at a given time.

Population Dynamics. Every organism has a habitat and a niche.

14.1 KEY CONCEPT Every organism has a habitat and a niche.

Chapter 6 Population and Community Ecology. Nature exists at several levels of complexity.

Biotic & Abiotic Factors What do species compete for?

Habitat and Niche and Community Interactions

Intestinal nematode parasites: mechanisms of resistance

SPECIES INTERACTIONS pp

Interactions in Ecosystems

20.1: Species Interactions (Part III)

Competition in Animals

Community Ecology.

Amy B. Pedersen, Andy Fenton Trends in Parasitology

Ecology - Populations.

Presentation transcript:

Dynamic Consequences of Species Interactions in A Dynamic Parasite Model CSS Workshop Presentation 2005 Joanne Lello, Susan McClure (CSIRO LI) Andrew Fenton (University of Liverpool, UK) & Mark Viney (University of Bristol, UK) CSS Workshop Presentation 2005 Joanne Lello, Susan McClure (CSIRO LI) Andrew Fenton (University of Liverpool, UK) & Mark Viney (University of Bristol, UK)

Taking A Community Ecology Approach to Pathogen Infections

Why Take A Community Approach? Because interactions can: –alter pathogen dynamics –alter disease transmission rates –increase disease severity –reduce control efficacy

What comprises the community? – The Host acting as an environment – The Host Immune System acting as a player – Other pathogens What kind of a system is it? –Predator Prey –Competitors and mutalists –War

Modelling the system P1P1 P2P2 H2H2 P1P1 P2P2 H1H1 ……… P1P1 P2P2 HnHn Mature Larval Pool (L 1 ) Mature Larval Pool (L2) Immature Larval Pool (I 1 ) Immature Larval Pool (I2)

Establish as Immature P 1 Establish as Mature P 1 Adult Survival Reproduction Establish as Immature P 2 Establish as Mature P 2 Adult Survival Reproduction The Model INTRA-Specific Density Dependent Effects

Establish as Immature P 1 Establish as Mature P 1 Adult Survival Reproduction Establish as Immature P 2 Establish as Mature P 2 Adult Survival Reproduction INTER-Specific Density Dependent Effects The Model

Model outputs Effects on larval establishment Time series Species 2 Species 1 Adult worm numbersFaecal Egg Output Species 2 Species 1 Species 2 Species 1 Time Parasite No.s

Adult worm numbers Time series Faecal Egg Output Species 2 Species 1 Species 2 Species 1 Time Parasite No.s Species 2 Species 1 Effects on Fecundity

Faecal Egg Output Species 2 Species 1P2 adults P2 egg output Effects on Fecundity Explained

Faecal Egg Output Species 2 Species 1 P1 adults P1 egg output Effects on Fecundity Explained

Faecal Egg Output Species 2 Species 1 P2 adults P1 egg output Effects on Fecundity Explained

Adult wormsEggs Effects on Fecundity Explained

What the model suggests NOT all interaction leads to structure Negative correlation does NOT equal interaction Host behaviour and biology can make alter outcome Immune memory can alter relationships

What next? Let the worms into the model IN FOCUS –The H. contortus - T. colubriformis relationship –H. contortus immunosuppression HAVE A PREDICTION CAPABLE MODEL!!!

Thanks to: Kerri Tyrrell Troy Kalinowski Mandy Choice Brian Cross Callum Mack Kerri Tyrrell Troy Kalinowski Mandy Choice Brian Cross Callum Mack

Adding some reality Trichostrongylus vitrinus Trichostrongylus colubriformis Haemonchus contortus Ostertagia circumcincta Abomasum Small Intestine ? -ve on fecundity Negative effect on adult worm numbers

The Players Host immunityThe pathogens

The Players Host immunityThe pathogens

The Players Host immunityPathogens bacteria virus Helminths

The Sheep Helminth Community Four Key Parasites –Abomasum Haemonchus contortus (Hc) Ostertagia circumcincta (Oc) –Small Intestine Trichostrongylus colubriformis (Tc) Trichostrongylus vitrinus (Tv)