EXAMINING OVERWINTER COLD-HARDINESS IN INSECTS Liz ManleyEBIO 4120Spring 2008 Winter Ecology – Mountain Research Station, University of Colorado, Boulder.

Slides:

Advertisements

Similar presentations

For a foraging bumblebee, warming the thorax to a high temperature is critical anphys-opener-08-0.jpg.

Advertisements

INTRODUCTION Bumblebees are economically important crop pollinators with extensive commercial usage Despite this, their thermal biology is largely unknown.

Invasive Species The Ladybird’s Tale Group 4 Deborah Fraga Lisette Buding May Anne Mata Sebastian Graiff Thales Kronenberger IV Southern-Summer School.

Winter Invertebrate Composition as a Function of Elevation How does invertebrate richness, diversity, and abundance change throughout an elevational gradient?

Jaclyn Ramaley / Winter Ecology / Spring 2010 Foundation Conifer of the Subalpine Forest Limber Pine / Pinus flexilis Mountain Research Station – University.

Plant & Animal Adaptations

Spatial Variability of Aspen Bark Chlorophyll Content In the Winter Justin Burman, EBIO 4100, Spring 2011 Winter Ecology Mountain Research Station University.

By Albert Zheng. Going Dormant Some insects go dormant. Go into a state diapause Can withstand lower temperature than those who remain active and longer.

Winter adaptations of the leaf litter and soil arthropod Collembola OR: Are these guys living amongst us? Jeff McClenahan March, 2006 Winter Ecology –

Lecture no 6 Fundamentals of environmental science.

THE IMPACT OF LODGEPOLE PINE SIZE ON HEAT-FORMED TREE WELLS Created by Philip Neumann Winter Ecology, Spring ‘08 Mountain Research Station – University.

Ecological and Economical Impact of Snow Molds By Ken Anderson Winter Ecology, Spring 2009 Mountain Research Station – University of Colorado, Boulder.

Ice Streams & Invertebrates Matthew McClure Winter Ecology, Mountain Research Station; 2008.

Vitrification in physics, cryobiology, and cryonics A. BOGDAN Department of Physical Sciences, University of Helsinki, Finland.

4C Naturally occurring diversity among and between components within biological systems affects interactions with the environment.

How do snowpack depth and proximity to trees affect subnivean plant growth Robin Reibold Winter Ecology: Spring 2014 Mountain Research Station, University.

Climate Change as a Driver in Mountain Pine Beetle Outbreaks in Eastern Washington Washington State Climate Change Impacts Assessment Conference Seattle,

Lodgepole Pine / Ponderosa Pine Ecotone By Tyler Bieneman Lodgepole Pine / Limber Pine Ecotone VS. Winter Ecology – Spring 2005 Mountain Research Station.

Available Alpine Resources for the Insectivorous Golden- crowned Kinglet Shelley Nagata -Winter Ecology, 2010 – Mountain Research Station, University of.

1.0 INTRODUCTION: Wind, Insects & Complex Terrain The mountain pine beetle population in British Columbia has been increasing over the past decade and.

Cold Tolerant Fish in Alpine Streams Lauren Pacheco Winter Ecology Spring 2008 Mountain Research Station, University of Colorado, Boulder.

CHAPTER 50 AN INTRODUCTION TO ECOLOGY AND THE BIOSPERE Copyright © 2002 Pearson Education, Inc., publishing as Benjamin Cummings Section A: The Scope of.

Carbon dioxide cycling through the snowpack, implications of change Gareth Crosby.

Welcome to: Foundations of Ecology Biology 356 J. Ruesink Lecture 1 Introduction/ Adaptation.

Avalanches: Disaster or Miracle? A Changing Ecological Effect Jason Blair February 21, 2009 Winter Ecology Spring 2009 Mountain Research Station, University.

Climate Change and its impact on Forests in Europe and North America Andrew J. R. Gillespie, Ph. D. United States Environmental Protection Agency.

Nick Herdeg Winter Ecology: Spring 2014 Mountain Research Station, University of Colorado, Boulder.

Comparative Vertebrate Physiology

Influences of Stationary Objects on Winter Subnivean Micro-Environments David Olson - Ebio 4120 – Spring 2010 Source: freestockphotos.com Winter Ecology.

Surviving Aquatic Changes. I. Effects of Salinity on Ocean Life A. Osmoregulation - ability of aquatic organisms to maintain a proper water balance within.

Impact of Recreational Snow Compaction on Small Mammals in the Subnivean Space Derek Sweeney EBIO 4120 Spring 2008 Mountain Research Station University.

Carbon Dioxide (CO 2 ) Recent CO 2 Changes IPCC Reports.

KRISTY CAMPBELL WINTER ECOLOGY,SPRING 2014 Mountain Research Station, University of Colorado, Boulder The Effect of Elevation on Mammal Behavior and Abundance.

NSF/NASA The role of taxonomic, functional, genetic, and landscape diversity in food web responses to a changing environment Anthony R. Ives,

Eric Kortenhoeven Mentor: Dr. Neil Cobb Hooper Undergraduate Research Award (HURA)

Cold Environments Revision Why are cold environments considered to be fragile?

Short-term changes in snowpack due to weather Sean Sutherland  University of Colorado, Boulder  EBIO 4100, Winter Ecology Spring 2011  Mountain Research.

Daniel P. Bradley February 19 th, 2011 Winter Ecology Mountain Research Station, University of Colorado, Boulder EBIO 4100, Sec 570.

Biology 2672a Review Lecture. Scaling of Surface Area-Volume Log Volume Log Surface Area Slope = 2/3 SA=V 2/3 Slope = 1 Sa ≈ V 1.

By: Sammie Keitlen and Brandon Johnson. 1 year life cycle Late Summer: Adults leave dead trees -Seek out new trees -Beetles mate -Form a tunnel under.

Affiliations (1) Dept. of Biology, Santa Clara Univ.; (2) Dept. of Biology, Sonoma State Univ., (3)Univ. of California White Mountain Research Station.

The relationship between snow depth and soil respiration in upper montane winter environments Claire Hierseman Winter Ecology Spring 2013 Mountain Research.

Winter Mortalities of the Mountain Pine Beetle Andrew Habig Winter Ecology Spring 2009 Mountain Research Station, University of Colorado, Boulder.

Life at the Edge. Yes, life at the edge CAN be risky…. But not for extremophiles! Not only are extremophiles perfectly suited for their environments,

Winter Soil Respiration Near Dead and Living Lodgepole Pines at Niwot Ridge, CO Justin D’Atri Winter Ecology Spring 2010 Mountain Research Station – University.

BSU IN AFS meeting Tue Aug 23TONIGHT! 5:00 pm CL 167 Electrofishing demonstration.

Biology 029: Life on other planets… Cold tolerance in ectotherms.

Temperature Relations of Plants Plants and endothermic homeothermic animals differ in how they regulate their body temperature.

Minnesota First Detectors Mountain pine beetle What is it? Where is it? Why do we care? What is the risk? How is it managed? Photo: Blackwater, British.

Phoretic mites associated with Dendroctonus beetles and their invertebrate predators Richard W. Hofstetter, Elisabeth Alden, John C. Moser 1, and Karen.

Adaptations to the Physical Environment

Plant overwintering strategies

Subalpine soil microbial response to compaction of snow pack by snowmobiles Elizabeth Golden EBIO 4100, Winter Ecology, Spring 2013 Mountain Research Station,

C HEMICAL AND PHYSICAL FACTORS INVOLVED IN THE AGGREGATION BEHAVIOUR OF H ARMONIA AXYRIDIS P ALLAS Department of Functional and Evolutionary Entomology.

Genesis Machek Winter Ecology, Spring 2010 Mountain Research Station - University of Colorado at Boulder.

A snowpack comparison between a limber pine site and a spruce site within a spruce forest Sam Sartwell, Winter Ecology, EBIO 4100, Spring 2014, CU Mountain.

Forest Floor Objects as Avalanche Triggers Andrew Benton February 23, 2013 Winter Ecology Mountain Research Station University of Colorado at Boulder Andrew.

Ecology --- primary definition The scientific study of how organisms interact with the natural world.

Physical conditions and availability of resources Chapter 3 - continued.

Chapter 3 Communities, Biomes,

CHAPTER 50 AN INTRODUCTION TO ECOLOGY AND THE BIOSPERE Section A: The Scope of Ecology 1.The interaction between organisms and their environments determine.

Hydrologic Change & Riparian Forests Winter Ecology – Spring 2008 Mountain Research Station – University of Colorado, Boulder Jason Ward.

BRANCHES of BIOLOGY.

Lobsters in a pinch: Epizootic shell disease in the American Lobster

Distribution of Arboreal Lichens Relative to Snowpack

Beetle, it’s cold outside!

Noel DiPaola Title page inserted -TK Winter Ecology – Spring 2009

Interactions with the environment.

Integrated research framework, bounded by population and ecology of care axes running from highly selected to managed care populations (Y-axis) and from.

Presentation transcript:

EXAMINING OVERWINTER COLD-HARDINESS IN INSECTS Liz ManleyEBIO 4120Spring 2008 Winter Ecology – Mountain Research Station, University of Colorado, Boulder

Problems during winter conditions  Insects are little bags of water  Exoskeleton and hemolymph  Ectotherms  How do insects survive overwintering?  Why do we care?

Freeze tolerance strategy  Allows ice formation between cells  Supercooling  Antifreeze proteins (AFPs)  Ice Nucleating Agents (INAs) (Danks, 2004; Halfpenny and Ozanne, 1989)

Freeze avoidance strategy  Does not allow formation of ice within the body  Lowers supercooling point by 20 ˚C  Synthesizes polyols and sugars

Main biological components of freeze tolerance and freeze avoidance strategies. (Bale, 2002) Comparison of strategies

More than two categories…  SCP is below winter temperatures  Especially under snowpack  SCP in many studies is measured in isolation Freezing is not the biggest threat to freeze avoidance insects (Bale, 1996; Bale 2002)

New Categories Freeze tolerant Freeze avoidant Opportunistic survival Chill susceptible Chill tolerant (Bale, 2002)

Aggregate in very large numbers during the winter; Chill tolerant Contrast is the most important feature for overwinter habitat choice Harmonia axyridis (Asian lady beetle) (Nalepa et al., 2005)

Dendroctonus ponderosae (Régnière and Bentz, 2007)

Using the model to predict SCP Changing dynamics of SCP in pine beetle population based on daily and seasonal temperatures at different sites (Régnière and Bentz, 2007)

Conclusions  Insects have several adaptation strategies for surviving the winter  Lady beetles use visual contrast to find overwintering sites  Mountain pine beetle populations have dynamic SCPs based on location and season.

Literature cited  Bale, J.S Insects and low temperatures: from molecular biology to distributions and abundance. Philosophical Transactions of the Royal Society of London Series B – Biological Science 357:  Bale, J.S Insect cold hardiness: A matter of life and death. European Journal of Entomology 93:  Danks, H.V Seasonal adaptations in Arctic insects. Integrative and Comparative Biology 44:  Halfpenny, J. C. and R. D. Ozanne Winter: An Ecological Handbook. Johnson Publishing Company. Boulder, CO.  Nalepa, C. A., G. G. Kennedy, and C. Brownie Role of visual contrast in the alighting behavior of Harmonia axyridis (Coleoptera: Coccinellidae) at overwintering sites. Environmental Entomology 34:  Régnière, J. and B. Bentz Modeling cold tolerance in the Mountain Pine Beetle, Dendroctonus ponderosae. Journal of Insect Physiology 53: