Butterflies

Butterflies Butterflies - Start

2016-02-24 44K 44 0 0

Butterflies - Description

Life Cycle. Butterflies have an unusual life cycle.. Larval caterpillar stage. Inactive pupal stage. Into finally a spectacular metamorphosis into a familiar and colorful winged form. Pupal Stage. Butterflies go through a pupal stage. ID: 230250 Download Presentation

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Butterflies




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Presentations text content in Butterflies

Slide1

Butterflies

Slide2

Life Cycle

Butterflies have an unusual life cycle.

Larval caterpillar stageInactive pupal stageInto finally a spectacular metamorphosis into a familiar and colorful winged form

Slide3

Pupal Stage

Butterflies go through a pupal stageLives from a week to nearly a year depending on the species.Some have long life stages while others are dormant (surviving winter life cycles)

Slide4

Butterfly Broods

Butterflies have one or more broods per year.

The number of generations per year varies from temperate to tropical regions.

Tropical regions show a trend towards moltivoltinism.

Moltivoltinism- A term used in biology to indicate the number of generations of an organism in a year.

Slide5

Egg

Butterfly eggs are a hard, ridged outer layer of shell called chorian. It has a thin coating of wax , that prevents the egg from drying out before the larvae has had time to fully develop.The eggs very in size, and the egg stage last for a couple of weeks.

Slide6

Inside the Egg

The egg contains a tiny, funnel shaped opening at one end, called micropyles.This allows the sperm to enter and fertilize the egg.

Slide7

Caterpillars

Butterfly larvae, or caterpillars consume plant leaves, and they spend most of their time in search for food.Some form a mutual association with ants.

Slide8

Ants & caterpillars

Ants and caterpillars communicate through vibrations that are transmitted through the substrate as well as some chemical signals. The ants provide protection for the larvae and the larvae provide the ants with honeydew secretions.

Slide9

Caterpillars Anatomy

They have three pairs of true legs from the thoracic segments.They have up to six pairs pro legs arising from the abdominal segments.They can inflate parts of their head to appear snake-like.

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Imago

The imago is the adult stage of the butterfly.TA newly emerged butterfly needs to spend some time inflating its wings with blood and letting them dry, during this time it is vulnerable to predators.Some wings take up to three hours to dry.

Slide11

Butterflies cont.

The wings of a butterfly become increasingly damaged as it ages, and do not repair.They have two antennae, two compound eyes and a proboscis.

Slide12

Butterflies

Butterflies feed primarily on nectar from flowers.Some fed on pollen and some sap, rotting fruit, dung and dissolved minerals in wet sand or dirt.Many migrate over long distances.As caterpillars, many defend themselves by freezing and appearing like sticks and branches.

Slide13

Butterflies cont.

Behavioral defense include perching and wing positions to avoid being conspicuous.Eyespots and tails are found in many lycaenid butterflies and these divert the attention of predators from the more vital head region.A butterfly’s hind wings are thought to allow the butterfly to take swift turns to evade predators.


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