Insect Life Cycle.Pdf
Total Page：16
File Type：pdf, Size：1020Kb
Load more
Recommended publications
-
Insects by Cindy Grigg
Insects By Cindy Grigg 1 Like you, insects are alive. Both people and insects are animals. Insects are different from most other animals. Let's read to find out how they are different. 2 Insects are invertebrate animals. That means they have no backbone. Insects are the largest group of animals on Earth. In fact, about half of all animals that scientists know are insects! 3 Insects have three main body parts. They are the head, the thorax, and the abdomen. They have six legs. Many adult insects also have wings. The wings and legs are attached to the thorax. 4 Some invertebrate animals look like insects, but they are not. Spiders and scorpions, for example, are commonly confused with insects. Spiders and scorpions are not insects because they have eight legs, not six. They also have only two body segments instead of three. 5 Most insects lay eggs. Some young insects look like their parents. Other young insects, such as caterpillars, look very different from their parents. 6 All the stages in the life of an animal make up the animal's life cycle. Butterflies have a four-stage life cycle. Butterflies often lay eggs on leaves the insects can eat after they hatch. The egg is the first stage of the butterfly's life cycle. 7 When the egg hatches, a larva comes out of the egg. We often call the larva a caterpillar. This is the second stage. The caterpillar looks very different from the adult butterfly. The larva eats the leaves and grows very quickly. 8 After the larva grows big enough, it makes a hard covering for itself. -
Thrips Page 1
Insect Order Identification Home Thysanoptera–Thrips Page 1 Life Cycle--Intermediate metamorphosis (between complete and simple). Winged adults mate and lay eggs. Larvae (nymphs) look similar to adults in form and shape but lack both wings and wingbuds. Larvae eat, molt, and grow larger until entering a non-feeding larval stage (pupa) in which wings form and a color change may occur but the form remains essentially the same. Some species have one or more non-feeding pre-pupal stages. The emerging winged adult looks similar to the larva. Adults--Minuscule insects (usually 1/16 inch or less). Magnification may be needed to see them. Adults are usually dark-colored, yellow to black. Shape elongated and slender. Two pairs of wings are long and narrow and held over the body. Edges of both forewings and hindwings are fringed or feathery. (Click images to enlarge.) Black dots are Feathery-edged wings Wings tube-tailed thrips long & narrow Brown dots are mixture of adults, larvae & damage One of the black dots above Feathery-edged One of the wings brown dots above Insect Order Identification Home Thysanoptera–Thrips Page 2 Eggs--Some female thrips lay their eggs in tiny slits cut into the surface of leaves, fruits, flowers, and stems. Indoors, the eggs can be laid any time of year and hatch within a few days in warm, indoor conditions. In some species the fertilized eggs are all parthenogenic females (able to reproduce without sex) and the unfertilized are males. (Click images to enlarge.) Thrips eggs Close-up of eggs Larvae (Nymphs)--Look similar to adults but entirely wingless and usually pale-colored, white to cream or pale green. -
Colorado Potato Beetle.Pub
CORNELL COOPERATIVE EXTENSION OF ONEIDA COUNTY 121 Second Street Oriskany, NY 13424-9799 (315) 736-3394 or (315) 337-2531 FAX: (315) 736-2580 Colorado Potato Beetle Leptinotarsa decemlineata Description: The Colorado potato beetle was first described in 1824 from the upper Missouri River Valley where it fed on a weed called buffalo bur or sand bur, but when early settlers first began to plant potatoes, the beetles discovered the new food plant and liked it. Adult Colorado Potato Beetle Colorado Potato Beetle larva Injury: Larvae and adults feed on the foliage of potato, eggplant, tomatoes and peppers. They may reach large numbers and eat all the foliage from the plant as well as spoil the fruit by eating into it. They are especially de- structive to small plantings. Life History: Adult beetles come out of winter hibernation in mid-May on Long Island and a week or ten days later in central New York just before the early-planted potatoes are up. Clusters of 20 or more eggs are laid on the underside of the leaves soon after the beetles emerge. The eggs hatch in seven to ten days. The larvae feed on the foliage, grow rapidly and complete their development in 18 to 21 days. The full-grown larva burrows into the ground and changes to the pupa or resting stage. After seven to ten days, the adult beetle emerges from the pupa, crawls up out of the ground, and after a short period of waiting, lays eggs for the second generation. Management: In the past several years, the Colorado potato beetle has become increasingly difficult to control because it has developed resistance to many commonly used chemical insecticides. -
Energetics of Metamorphosis in Drosophila Melanogaster ⇑ Allison B
Journal of Insect Physiology 57 (2011) 1437–1445 Contents lists available at ScienceDirect Journal of Insect Physiology journal homepage: www.elsevier.com/locate/jinsphys Energetics of metamorphosis in Drosophila melanogaster ⇑ Allison B. Merkey, Carrie K. Wong 1, Deborah K. Hoshizaki 2, Allen G. Gibbs School of Life Sciences, 4505 S. Maryland Pkwy., University of Nevada, Las Vegas, Nevada 89154, USA article info abstract Article history: We measured the energetic cost of metamorphosis in the fruitfly, Drosophila melanogaster. Metabolic Received 26 May 2011 rates decreased rapidly in the first 24 h and remained low until shortly before eclosion, when the rates Received in revised form 18 July 2011 increased rapidly, thus creating a U-shaped metabolic curve. The primary fuel used during metamorpho- Accepted 19 July 2011 sis was lipid, which accounted for >80% of total metabolism. The total energy consumed during metamor- Available online 24 July 2011 phosis was lowest at 25 °C, compared to 18 and 29 °C, due to differences in metabolic rates and the length of pupal development. Temperature differentially affected metabolic rates during different stages of Keywords: metamorphosis. Prepupal and late pupal stages exhibited typical increases in metabolic rate at high tem- Drosophila peratures, whereas metabolic rates were independent of temperature during the first 2/3 of pupal devel- Energetics Lipid opment. Metabolic rate We tested two hypotheses for the underlying cause of the U-shaped metabolic curve. The first hypoth- Metamorphosis esis was that pupae become oxygen restricted as a result of remodeling of the larval tracheal system. We tested this hypothesis by exposing pupae to hypoxic and hyperoxic atmospheres, and by measuring lactic acid production during normoxic development. -
Butterfly Tip Sheet
BUTTERFLY TIP SHEET STARTING THE PROGRAM •It will take approximately 4 weeks to transform from larvae to butterfly. •Each larva is housed in its own little container. •Keep the lids on at all times (until chrysalis is formed). •Make sure that the containers are standing upright at all times. (DO NOT TURN UPSIDE DOWN) •Keep the containers out of the sunlight, and also out of the path of air vents. •The suggested room temperature is 68⁰ to 75⁰. •Each container has enough food and air for the larvae, until it forms its chrysalis. FORMING CHRYSALIDES •The larvae will grow to be about 1 inch long and look like a fuzzy black caterpillar. •In 7-10 days depending on the temperature, the larvae should form a chrysalis. (Faster in warm weather, slower in cool) •The larvae will attach itself to the lid of the container by its tail and hang upside down for about 24 hours. During this time the larvae will start to spin its chrysalis. AFTER CHRYSALIS FORMATION •Once the chrysalis has formed, it should take another 7-10 days for the Painted Lady Butterfly to emerge. (Again this depends on the weather) •After the chrysalides have been hanging in the container for 2-3 days, the teacher will GENTLY remove the lid with the chrysalis attached, and then tape it on one of the lower branches, or to the base of the branch. You can also attach the lid to the cage by using a binder clip or Velcro, attaching it on the outside of the cage. •Please do not cut the screen of the cage. -
Ants on Parade
Standards and Correlations Head Start Outcomes Ants on Parade P-ATL3, P-ATL4, P-ATL5, P-ATL6, P-ATL8, P-ATL10, P-ATL11, P-ATL13, P-SE3, P-SE4, P-LC1, P-LC2, P-LC3, P-LC4, P-LC5, P-LC6, P-LC7, P-LIT4, Children go outside to observe ant behavior and learn insect characteristics. P-LIT5, P-LIT6, P-MATH1, P-MATH2, P-MATH3, P-MATH4, P-MATH5, will happen is our hypothesis. Let’s test P-MATH6, P-SCI1, P-SCI2, P-SCI3, P-SCI4, P-SCI5, P-SCI6, P-PMP1, our hypothesis. Place students’ choices P-PMP3 Quick Facts of food items in each section of a paper There are thousands of ant species in North America. Though some species are plate or plates. considered pests, ants play an invaluable role in many ecosystems. Many are NAEYC Accreditation 2. Take the children outdoors for an “ant Criteria important predators of small invertebrates, including other insects, while others are 2.A.07, 2.A.10, 2.A.11, 2.A.12, 2.B.03, very effective dispersers of the seeds they harvest. In many ecosystems, ants turn over hunt” (see Healthy Me and Helping 2.B.04, 2.B.05, 2.B.06, 2.B.07, 2.C.03, and aerate the soil as much, or more than, earthworms. Hands for tips on making this a safe 2.C.04, 2.D.03, 2.D.04, 2.D.07, 2.E.04, experience for the children and the 2.E.06, 2.E.11, 2.F.02, 2.F.04, 2.F.11, All ants go through a four-stage life cycle—egg, larva, pupa, and adult. -
Life Cycle of a Butterfly
There are few insects as beautiful as the butterfly. They come in all shapes, sizes and colors but surprisingly they were not born with those good looks. Instead they grow into their beauty. Learn more about the four stages of transformation, also know as metamor- phosis, in the life cycle of the butterfly below. Use this new found knowledge to recreate each stage on the flip side of this sheet using color, pasta and a little imagination. Egg Stage: The life of a butterfly starts when the adult female lays her eggs on a leaf. This leaf will serve as a food source to the caterpillar when it first emerges from the egg during the caterpillar stage. To find these tiny round eggs check the un- derside of leaves and break out your magnifying glass to get a closer look at the larva that moves inside them. Caterpillar Stage: Hungry little caterpillars will emerge from the hatching eggs. At this stage they will spend most of their time eating and growing. A caterpillar can ingest a large leaf in just one day and will grow 100 times in size before its next transition. ThePupa Pupa: Stage: This is the most dramatic transition of the insect’s life cycle. Once the caterpillar is fully grown it will stop eating and form into a pupa, also called a chrysalis. From the outside it looks like the insect is resting but inside the pupa the caterpillar is rapidly trans- forming into a beautiful butterfly. Adult Stage: This is the reproductive stage for the adult but- terfly and their job is to mate and produce more eggs. -
Insect Life Cycle a Reading A–Z Level L Leveled Book Word Count: 607
Insect Life Cycle A Reading A–Z Level L Leveled Book Word Count: 607 Written by Chuck Garofano Visit www.readinga-z.com www.readinga-z.com for thousands of books and materials. Photo Credits: Front cover, back cover, pages 3, 4, 7, 13, 15 (top): © Brand X Pictures; title page, page 11: © Kenneth Keifer/123RF; page 5: © Eric Isselée/ Dreamstime.com; page 6: © Mike Abbey/Visuals Unlimited, Inc.; page 8: © Richard Williams/123RF; page 9: © Oxford Scientific/Peter Arnold; page 10: © Anthony Bannister/Gallo Images/Corbis; page 12: © Dennis Johnson; Papillo/Corbis; page 14: © 123RF; page 15 (bottom): © ArtToday Written by Chuck Garofano Insect Life Cycle Level L Leveled Book Correlation © Learning A–Z LEVEL L Written by Chuck Garofano Fountas & Pinnell K All rights reserved. Reading Recovery 18 www.readinga-z.com www.readinga-z.com DRA 20 Table of Contents Flower beetle Introduction ................ 4 What Are Insects? ............ 6 Egg ....................... 8 Larva ......................10 Pupa ..................... 12 Ladybug Tropical ant Adult ..................... 13 Introduction Nymph . 14 When you were born, your body Index...................... 16 was shaped a lot like it is now. It was smaller, of course, but you had a head, legs, arms, and a torso. When you grow up, your body shape will be about the same. But some baby animals look nothing like the adults they will become. Insect Life Cycle • Level L 3 4 These animals have a different kind What Are Insects? of life cycle. A life cycle is the series There are more than 800,000 of changes an animal goes through different kinds of insects. -
Insect Order ID: Coleoptera (Beetles, Weevils)
Return to insect order home Page 1 of 3 Visit us on the Web: www.gardeninghelp.org Insect Order ID: Coleoptera (Beetles, Weevils) Life Cycle–Complete metamorphosis: Adults lay eggs. Larvae eat, grow and molt. This stage is repeated a varying number of times, depending on species, until hormonal changes cause the larvae to pupate. They form a pupal case, inside of which the pupae change in form and in color and develop wings. The emerging adults look completely different from the larvae. Adults–Forewings (elytra) form a hard, usually rounded shell and meet in a straight line down the middle of the back, completely covering the membranous hindwings but not always covering the entire abdomen. A hard protective shell (pronotum) covering the thorax between the head and wings and the hard-shelled forewings make most adult beetles look armor-plated. Adults are winged and do not change or grow. (Click images to enlarge or orange text for more information.) Hard-shelled pronotum Hindwings Forewings meet Hard-shelled membranous in straight line down forewings (elytra) center of back Forewings do not always cover Not all have Weevils & curculios abdomen smooth forewings have long snouts Return to insect order home Page 2 of 3 Eggs–Adults lay eggs where larval food is plentiful. (Click images to enlarge or orange text for more information.) Lady beetle eggs Larvae–All have three pairs of legs, although some legs are hairlike and barely visible. None have wingbuds. Most commonly encountered species are in one of three different forms, depending on species: elateriform (wireworms), scarabaeiform (grubs), and campodeiform (often spiny). -
All About Moths
r e g s i n T o n s r e a d P r . a M G All about Moths Look further into the world of moths – you will be amaze d What are moth s? Moths and butterflies are part of the same group of insects called the Lepidoptera, meaning ‘scaly-winged’. The colours and patterns of their wings are made up of thousands of tiny scales, overlapping like tiles on a roof. (It’s best not to touch their wings because the scales will come off as a powdery dust.) Moths and butterflies are very similar. There are over 2,500 different types of moths and 58 different butterflies in the UK. Butterflies fly during the day but many moths are nocturnal, flying at night. However, some moths fly in the daytime. Fact: There are many more types of moths found in the day than butterflies. Moth body parts antenna proboscis head forewing compound eye hindwing thorax abdomen 3 pairs of legs Humming-bird Hawk-moth Moths come in all shapes and sizes, and some don’t even look like moths at all; the clearwing moths, for instance, look like wasps to stop predators from attacking them. Many moths have fantastic camouflage to help them hide from predators. The hook-tips, for example, look just like dry leaves. Others are brightly coloured like the tiger moths and hawk-moths. Fact: Hawk-moths got their name because they fly very fast like birds of prey. The lif e cycle Moths and butterflies have four different stages of their lives. -
TYPES of LARVAE and PUPAE EGGS the First Stage Of
TYPES OF LARVAE AND PUPAE EGGS The first stage of development in all insects is egg. Majority of insects are oviparous. Egg stage is inconspicuous, inexpensive and inactive. Yolk contained in the egg supports the embryonic development. Eggs are laid under conditions where the food is available for feeding of the future youngones. Eggs are laid either individually or in groups. The outer protective shell of the egg is called chorion. Near the anterior end of the shell of the egg, there is a small opening called micropyle which allows the sperm entry for fertilization. Chorion may have a variety of textures. Size and shape of the insect eggs vary widely. Types of eggs a) Singly laid 1) Sculptured egg: Chorion with reticulate markings and ridges. Eg: castor butterfly 2) Elongate egg: Eggs are cigar shaped. Eg: Sorghum shoot fly. 3) Rounded egg: Eggs are either spherical or globular. Eg: Citrus butterfly. 4) Nit: Egg of head louse is called nit. It is cemented to the base of the hair. There is an egg stigma at the posterior end, which assists in attachement. At the anterior end, there is an oval lid which is lifted at time of hatching. 5) Egg with float: Egg is boat shaped with a conspicuous float on either side. The lateral sides are expanded. The expansions serve as floats. Eg: Anopheles mosquito. Turbo b) LAID IN GROUPS 1) Pedicellate eggs: Eggs are laid in silken stalks of about 1.25 mm length in on groups plants. Eg: Green lace wing fly. 2) Barrel shaped eggs: Eggs are barrel shaped. -
Basic Insect ID
Basic Insect ID Wayne J. Ohnesorg & James A. Kalisch University of Nebraska-Lincoln Extension Identifying insects takes great attention to detail. While trying to identifying insect you will need to look at different parts of the insect’s anatomy. Figure 1 shows the basic parts of an adult insect or one that has gradual metamorphosis. Figure 2 shows the basic parts of a larva of an insect with complete metamorphosis. Sometimes you will need to look at features on the head such as the eyes, antenna, or mouthparts. Different types of insect antennae Figure 1. Body regions and parts of an adult grasshopper. are shown in Figure 3. Figure 2. Body regions and parts of a corn earworm. Figure 3. Types of insect antennae. Figure 4. The basic parts of an insect leg. At other times you will have to look closely at the thorax, and in particular, the legs or wings. A diagram of a basic insect leg’s parts can be found in Figure 4. Different types of insect legs can be found in Figure 5. Often, examination of the abdomen will also be important in identification of insects, particularly caterpillars. Specifically, you will be asked to count the number of prolegs present (Figure 2). 1 Mouthparts of insects are also very important. There are two basic types of mouthparts, those for sucking and those chewing. Each type of mouthpart causes different types of damage in crops. Both mouthparts are Figure 6. Top, sucking mouthparts illustrated in Figure 6. of true bug; bottom, chewing Figure 5. Types of insect legs.