notes7 - Objectives Getting Together Staying Alive 1 2 3 4...

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1 1 2 Objectives 1. Name and describe 5 ways insects get together to mate. 2. Using an example, describe each of the different ways insects protect themselves. 3. Define Mullerian and Batesian mimicry. 4. Define and give examples of aposematic coloring/behavior. 3 Introduction The primary goal of any organism, including insects, is to pass on it's genes through reproduction. In order to do this, an organism must, eat, grow, and protect itself so that it can reproduce. Through this unit you will learn how insects find mates and protect themselves by examining 5 reproductive strategies and 9 protective strategies. UF Diptera:Bibionidae – love bugs 4 Getting Together – Reproductive Strategies The five strategies to be discussed are: 1. Looking good 2. Smelling good 3. Sounding sweet 4. Lamp light 5. Buying love Read textbook pages 114-122. In Unit 6, you briefly learned how a female silk moth uses a sex pheromone to attract her mate. This is just one of many fascinating reproductive strategies insects employ to entice reproductive partners. We are going to discuss some specific mating strategies, but before we get started, be sure to read the reproduction section in your text, pages 114- 122, some of the strategies are pretty racy. 5 Looking Good Specific insects can rely on their looks to attract a mate. Males will look for characteristics of his species and when he finds a female that matches he mates with her or vice versa. The more a potential mate looks like the "visual ideal" of the species its chances for reproduction is much greater. At times the one seeking the potential mate may mistakenly mate with the wrong species, or "bottle", as is seen in the video clip about Jewel Beetles. Mating pair of lovebugs, Plecia nearctica Hardy. Female on right. Color black with red dorsal portion of thorax. 6 Video – Jewel Beetles and their Beer Mates IMPORTANT NOTE: Throughout the course units, you wil be asked to view short video clips. Please understand that many of these video clips are copyrighted and are NOT to be used outside of this class and only may be used for this semester. Please do not copy or distribute these clips.
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2 7 Smelling Good Perhaps one of the most efficient ways to attract a mate is by smell since pheromones efficient to produce and can travel great distances. Insects rely heavily on sexual pheromones to get together and reproduce. Usually the chemicals are produced from glands located in the abdomen and released. As you learned in Unit 6, the female silk moth secretes a sex pheromone that is detected by a male moth. He detects the chemicals with his antennae and flies upwind in a zigzag pattern until he finds her. Figure 1
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This note was uploaded on 07/23/2011 for the course ENY 3005 taught by Professor Staff during the Spring '08 term at University of Florida.

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notes7 - Objectives Getting Together Staying Alive 1 2 3 4...

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