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Impact of Climate Change on Insect Populations: Case Studies and Adaptations, Lecture notes of Animal Biology

The effects of climate change on insect populations, focusing on specific case studies and adaptations. It examines how changing temperatures, weather patterns, and habitat alterations impact insect survival, reproduction, and distribution. The document highlights examples like the peppered moth, the western pine beetle, and the monarch butterfly, illustrating how these species are adapting to a changing environment. It also discusses the role of natural selection and the importance of understanding insect population dynamics in a warming world.

Typology: Lecture notes

2022/2023

Uploaded on 11/17/2024

kristal-bhan
kristal-bhan 🇨🇦

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How will plants

and other

animals cope?

Adapt to the

changing

conditions within

their current

range?

Example of

industrial

melanisation

Behavioural adaptations

Univoltine

Overwinters as a prepupa

Time of entry into the soil

Up to 4 weeks difference

Density

Late

cohort

Early

cohort

Time of entry into the soil

Up to 4 weeks difference

Density

Late

cohort

Early

cohort

Warmer summers…enter soil earlier

Higher mortality!

0 10 20 30 0 5 10 15 20 Microhabitat Depth (cm) Count Shallow 0 - 15 cm below soil surface Deep 15 - 30 cm below soil surface Fall 2015 0 10 20 30 0 10 20 30 Count Fall 2016 Turnbull et al. unpublished

Number

Individual variability in thermal tolerance

Temp increase
Low Medium High

Natural selection Population density could be important

  • Unsicker et al.,

Integrity of the chemical cue

Cucumber plant

Current vs current +4°C Flowers smaller Bullseye same area Relatively bigger target