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“Do-it-yourself workshop on invertebrate zoology” - course RUB 2,800. from MSU, training 15 weeks. (4 months), Date: December 2, 2023.
Miscellaneous / / December 05, 2023
The objective of the course is to introduce students to various representatives of invertebrate animals, methods of keeping, breeding, studying external morphology and internal anatomy. We will separately discuss how working on a zoological drawing helps when studying objects. The diversity of invertebrate animals is very large; we will focus on some of the brightest representatives of various groups. Students will become familiar with the techniques of working with binoculars and light microscopes. We will learn how to make temporary preparations for studying living objects, and discuss how to work with permanent ones preparations, including histological sections (it is most likely not possible to make them yourself as part of the course will succeed). Anatomy classes will be accompanied by dissections of animals such as an earthworm, a grape snail, a crayfish, and a type of large cockroach. The purpose of the course is to become familiar with the objects of invertebrate zoology and to master classical methods of working with them. Pictures from books and textbooks, photographs and videos from the Internet are often very good and informative, but when it comes working with the object of study with one’s own hands and other parts of the body, a person gains knowledge, experience, and not just information.
Form of study
Correspondence courses using distance learning technologies
1. Introduction. General rules for working in a laboratory (including in a home laboratory). Optical instruments for practical work. Binocular, light microscope - device and principles of operation. Safety precautions.
Where and how to get a live amoeba for study. Maintaining a culture of amoeba vulgaris in the laboratory. How to prepare a temporary preparation with amoeba. The structure of an amoeba under a microscope.
2. How to grow ciliates at home, where and how to collect ciliates in nature.
Ciliate slipper, ciliate trumpeter. Maintenance in culture, nutrition, preparation of a temporary preparation, observation of live ciliates under a microscope. The structure of the slipper ciliate and the trumpeter ciliate.
3. The first multicellular animals are sponges. Freshwater sponges - where to find them in natural bodies of water. The structure of sponges, the skeletal elements of sponges - spicules. Preparation of preparations of skeletal elements of sponges for study under a microscope.
4. Freshwater hydra is a representative of cnidarians.
Maintenance of hydra culture, preparation of hydra medium, feeding hydra with Artemia nauplii. How to prepare live food for hydra from Artemia cysts. The structure of hydra, asexual reproduction of hydra. Preparation of a temporary colored preparation of stinging capsules from a tentacle.
5. Annelids using the example of the earthworm. Where to get a large earthworm to study at a workshop. A few words about vermiculture. How to clean out a worm's intestines with starch before studying dissection. External structure of an earthworm. Methods of terminal anesthesia of an earthworm for further dissection.
Dissection technique, anatomy of an earthworm at dissection. Photographs of a cross-section of an earthworm (permanent preparation with stained histological sections).
6. Shellfish. Representatives of bivalve mollusks - mussels and toothless mollusks: where to collect them in nature, how to prepare them for study at a workshop. How to remove a clam from its shell. Opening of the mantle cavity.
The grape snail is a representative of gastropods. External structure of a grape snail, structure of the mantle cavity at autopsy. Internal structure of a grape snail at autopsy.
7. Flatworms. Free-living freshwater planarians using the example of Dugesiasp. Where to get and how to keep dugesium in the laboratory. The structure of planarians.
8. Free-living soil nematodes using the example of Panagrellus sp. How to breed and maintain a culture of free-living nematodes in the laboratory, what to feed. External structure, sexual dimorphism.
9. Crayfish is a representative of arthropod crustaceans. Where to get and how to prepare crayfish for study at the workshop. External morphology of crayfish. The structure of various limbs of crayfish. Fixation. Anatomy of crayfish at autopsy.
10. Insects - using the Madeiran cockroach as an example (any large cockroach will do). Where to get a large cockroach to study at a workshop. Methods for maintaining a colony of large cockroaches in culture. External structure of a cockroach. Anatomical dissection of a cockroach.
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