Untitled Quiz
10 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the primary purpose of labeling specimens during preparation?

  • To facilitate transportation
  • To add color to the specimens
  • To ensure scientific value and documentation (correct)
  • To provide aesthetic value
  • What is the recommended maximum size for a label according to the guidelines?

  • 5 x 10 mm
  • 7 x 18 mm (correct)
  • 7 x 20 mm
  • 10 x 15 mm
  • Which feature is essential for the paper used in labeling specimens?

  • Heavy and acid-free (correct)
  • Lightweight and glossy
  • Thin and transparent
  • Colored and textured
  • What type of pen is recommended for labeling specimens?

    <p>Rapidograph or technical drawing pen</p> Signup and view all the answers

    Which of the following is NOT recommended for printing labels?

    <p>Script font</p> Signup and view all the answers

    What is the correct format for labeling the date of collection?

    <p>Day using Arabic numerals, month in Roman numerals, year using Arabic numerals</p> Signup and view all the answers

    Which is the appropriate way to structure the collector's label?

    <p>Last name followed by et al. if there are multiple collectors</p> Signup and view all the answers

    When preparing vials for liquid-preserved specimens, what is NOT recommended?

    <p>Stoppers should be in contact with the liquid</p> Signup and view all the answers

    How should labels be placed on microscope slides?

    <p>Taxonomic information on the left side, collection information on the right side</p> Signup and view all the answers

    What is the ideal method for storing liquid-preserved specimens?

    <p>In jars with screw tops or damping lids</p> Signup and view all the answers

    Study Notes

    Insect Taxonomy (Entom Major 3)

    • Course: Entomology Major 3, 2nd Semester, AY 2016-2017
    • Instructor: Dr. Sheyl A. Yap, CPC-UPLB
    • Instructor: Elorde Jr. S. Crispolon (University of Southern Mindanao)
    • Contact Information for Dr. Elorde provided

    Insect Taxonomy - Order Breakdown

    • Percentage of Insect Orders: Lepidoptera (16%), Diptera (12%), Hymenoptera (13%), Coleoptera (38%), and others in percentages.

    Basic Tools and General Techniques

    • Focus on collecting, preserving, and storing insects.

    Collecting, Preserving, and Storing Insects

    • Collecting methods and equipment are described.

    Equipment and Collecting Methods

    • Equipment includes forceps (fine watchmaker, curved metal collecting, soft), sample vials (various types), small containers (film canister, plastic box, metal container). Small envelopes/Paper triangle, absorbent tissue, notebooks, cutting/digging tools, brushes (camel's hair preferred), bags (carry-on, plastic), hand lens (with lanyard), collecting nets (aerial, sweep, aquatic). Killing jars (including materials: absorbent paper, plaster of paris, sawdust, cyanide crystals), aspirators (with diagrams showing how insects are captured), and other collection devices (beating sheets, drag cloth, sifters).

    Equipment Details

    • Forceps types include fine watchmaker, curved metal collecting, and soft forceps.
    • Sample vials have various designs and closures. Small containers include film canisters, plastic boxes, and metal containers.
    • Killing Jars include absorbent paper, plaster of paris, sawdust, and cyanide crystals in the container.
    • Aspirators use tubes and containers for insect capture (diagram provided).
    • Beating Sheets: Durable white cloth attached to a frame (different shapes: square, triangular, two-handled).
    • Drag Cloth: Durable light-colored cloth attached to a dowel.
    • Sifters: Used to collect insects and mites from specific substrates, such as ground litter or decaying wood. 
    • Separators and Extractors: Include items like Berlese Tunnels and their variations.
    • Traps- Different types of traps based on organism's behavior/preference.
      • Malaise trap (described and Swedish entomologist mentioned)
      • Pitfall and Dish traps (various designs: cereal, PVC)
      • Light Traps (blacklight, Wilkinson, New Jersey, mercury vapor, light sheet)
      • Color Traps (using color as attractant, including a pan trap, and a Manitoba trap)
      • Sticky traps
      • Electrical grid traps

    Baits, Lures, and Other Attractants

    • Attracting with substances like:
      • Sugar (ants, moths, butterflies, caddisflies)
      • Fresh feces/decaying fruits (flies)
      • Oatmeal (crickets, cockroaches, ants)
      • Tuna (ants)
      • Pheromones (same insect species)
      • Sounds (same insect species)
      • Carbon dioxide (mosquitoes)

    Preservation and Storage of Specimens

    • Methods for both temporary and permanent storage of specimens.

    Temporary Storage

    • Refrigeration (for medium-to-large specimens): Store specimens tightly in a container for several days. Smaller insects can be frozen overnight. Use absorbent tissue to keep specimens dry.
    • Dry Preservation (for small boxes, tubes, and envelopes): Suitable for Diptera and soft-bodied insects. Use tightly closed containers made from metal, glass, or plastic, place specimens from different times in the same container, layer with data.
    • Papering (for Lepidoptera, Trichoptera, Neuroptera, Odonata): Suitable for moths (temporary), Trichoptera, Neuroptera, Odonata, and other large specimens. Use glassine paper in arranging butterflies. Do not pack specimens tightly together. Avoid airtight containers or envelopes.

    Mounting Specimens and Pinning

    • Methods for preparing specimens for permanent collections. Fresh specimens are ideal but temporarily stored specimens, especially treated before mounting, are acceptable. Dry specimens must be relaxed before mounting; liquid-preserved specimens need processing beforehand.
    • Different pinning procedures for different insect orders (Orthoptera, Heteroptera, Coleoptera, Hymenoptera, Diptera, Lepidoptera, and Odonata) are described diagrams included.
    • Degreasing procedures: removing internal fatty tissues using solvents (benzene, ethyl ether, carbon tetrachloride; vapor degreasing; hexane.

    Microscopy Mounting

    • Mounting mediums: Water soluble (temporary), alcohol-soluble, hydrocarbon-soluble, materials for both. 
    • Maceration (chemical removal of soft tissues).
    • Washing (removing excess caustic substances).
    • Bleaching agents.
    • Staining procedures.

    Label Data

    • Locality: Accurate description, unambigous, with coordinates, or country/state/city name.
    • Date: Day-month-year, avoiding ambiguity, hyphens or periods to avoid ambiguity in dates.
    • Collector: Full name, initials, et al.
    • Other Data: Useful data related to the specimens, e.g., hosts, habitat details (elevation, ecological types, collection conditions).
    • Placing Labels: Use pinning block for desired height, position labels centered under the specimen. For double-mounted insects, place the pin in the center of the right side of the label.

    Care of the Collection (Curation)

    • Housing the Collection: Standard equipment (medium-to-large, tight containers). Ensure uniformity in size and style for consistent storage. Use racks to store liquid-preserved specimens. Stoppers and lids that do not come into contact with the liquid. Appropriate lids include screw tops or damping lids. Good quality cork stoppers are preferred over plastic or rubber. Vials needing preservation can be placed upside down in a large jar filled with liquid preservative. Microscopy slides can be kept in slotted boxes and should be dry. Pinned specimens should be stored in boxes with foam bottoms.
    • Protecting specimens from pests and mold: freezing and use of liquid/solid fumigants (including chemicals). Drying techniques to prevent pests and mold.

    Shipping Pinned Insects

    • Detailed procedure for safely boxing and shipping pinned insects. Include using pinning boxes, adding filler, taping and labelling, and using shipping boxes. Specify how to properly prepare a box for shipping, using materials such as a foam-filled box.

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    More Like This

    Untitled Quiz
    37 questions

    Untitled Quiz

    WellReceivedSquirrel7948 avatar
    WellReceivedSquirrel7948
    Untitled Quiz
    19 questions

    Untitled Quiz

    TalentedFantasy1640 avatar
    TalentedFantasy1640
    Untitled Quiz
    18 questions

    Untitled Quiz

    RighteousIguana avatar
    RighteousIguana
    Untitled Quiz
    50 questions

    Untitled Quiz

    JoyousSulfur avatar
    JoyousSulfur
    Use Quizgecko on...
    Browser
    Browser