Course code LauZ4282
Credit points 3
Entomology and Plant Pathology II
Total Hours in Course81
Number of hours for lectures32
Independent study hours49
Date of course confirmation29.10.2019
Responsible UnitInstitute of Soil and Plant Science
Course developer
Jānis Gailis
Dr. agr.
Course abstract
During the course, students get acquainted with anatomy, systematics, diversity, biology of invertebrates as well as with ecology of potentially economically important species. Also, students obtain knowledge on monitoring and controlling methods and tools of potentially harmful invertebrates’ species.
Learning outcomes and their assessment
Basic level knowledge on diversity, anatomy, biology, ecology and economic importance of invertebrates; on methods and tools for control of potentially harmful species.
Skills to identify various taxons of invertebrates and also economically important species.
Competences to choose monitoring and controlling methods for various potentially harmful species.
Knowledge, skills and competences are assessed using two written tests and one seminar during the course.
Course Content(Calendar)
1. Introduction. Systematics of invertebrates.
2. Nematodes (Nematoda) and other round worms. Chelicerates (Chelicerata): gall mites (Eriophydae), spider mites (Tetranychidae) and others.
3. Springtails (Collembola). Orthopterans (Orthoptera): locusts (Acrididae), mole crickets (Gryllotalpidae) and others.
4. Bugs (Hemiptera): mirid bugs (Miridae), stink bugs (Pentatomidae), jewel bugs (Scutelleridae) and others. Thrips (Thysanoptera).
5. Homopterous insects (Homoptera): aphids (Aphididae), wax scales (Coccidae), mealy bugs (Pseudococcidae), cicadas (Auchenorrhyncha), whiteflies (Aleurodidae), leaf flies (Psyllidae) and others.
6. Beetles (Coleoptera): scarab beetles (Scarabaeidae), click beetles (Elateridae), sap beetles (Nitidulidae), leaf beetles (Chrysomelidae), weevils (Curculionidae), seed weevils (Apionidae), leaf-rolling weevils (Attelabidae), ground beetles (Carabidae), ladybirds (Coccinellidae), rove beetles (Staphylinidae) and others.
7. Hymenopterans (Hymenoptera): sawflies (Tenthredinidae, Argidae), gall wasps (Cynipidae), wasps (Vespidae), bees (Apoidea), ants (Formicidae), ichneumon wasps (Ichneumonidae) and others.
8. Flies (Diptera): crane flies (Tipulidae), gall midges (Cecidomyiidae), dark-winged fungus gnats (Sciaridae), fungus gnats (Mycetophilidae), leaf-miner flies (Agromyzidae), hoverflies (Syrphidae), frit flies (Chloropidae), fruit flies (Drosophilidae), robber flies (Asilidae) and others.
9. Butterflies and moths (Lepidoptera): whites and yellows (Pieridae), hawk moths (Sphingidae), geometer moths (Geometridae), owlet moths (Noctuidae), grass moths (Pyralidae), leafroller moths (Tortricidae), eggars (Lasiocampidae), ermine moths (Yponomeutidae) and others.
10. Ecology of invertebrates.
11. Methods for studies of invertebrates and for monitoring of potentially harmful species.
12. Preventive measures for controlling of potentially harmful species.
13. Corrective methods and tools for controlling of potentially harmful species.
14. Identification of invertebrates’ taxa by using identification
Requirements for awarding credit points
Two written tests successfully accomplished (grade must be at least 4): test on systematics, diversity, anatomy and biology of invertebrates (1) and test on ecology and methods for studying and monitoring of invertebrates; on controlling measures and tools for potentially harmful species; on identification of invertebrates’ taxons economically important in forestry (2).
The mean grade of the tests is final grade of the course.
Description of the organization and tasks of students’ independent work
Independent studies to get ready for tests.
Criteria for Evaluating Learning Outcomes
During the tests, students must give answers to two-type questions: typical test questions which must be answered by choosing one correct answer from several proposed versions (1) and questions which must be answered by writing correct answer (2). Student earns one point for every correctly answered typical test question, but correct answer to second-type questions gives 1–5 points depending on complexity of the question. If the second-type question is answered partly, then student gets reduced amount of points for the answer to the question. In total, there is possibility to earn 50 points by accomplishing the test. The test is successfully accomplished if the student earns at least 26 points.
Grade of the written test depends on amount of the earned points:
49...50 points – 10 (excellent);
46...48 point – 9 (very well);
42...45 points – 8 (very good);
38...41 points – 7 (good);
34...37 points – 6 (almost good);
30...33 points – 5 (average);
26...29 points – 4 (almost average);
20...25 points – 3 (weak);
14...19 points – 2 (very weak);
<14 points – 1 (very, very weak).
Compulsory reading
Engemann J.G., Hegner R.W. Invertebrate zoology. New York; London: Macmillan Publishing Co, 1981. 746 p.
Gillot C. Entomology. Dordrecht: Springer, 2005. 831 p.
Further reading
Insects as Natural Enemies: A Practical Perspective. M.A. Jervis (ed.). Dordrecht: Springer, 2007. 748 p.
Periodicals and other sources
Journal of Applied Ecology. [Online]. British Ecological Society. Online ISSN: 1365-2664. [Viewed 28.08.2019]. Available: https://besjournals.onlinelibrary.wiley.com/journal/13652664
Journal of Applied Entomology. [Online]. Blackwell Verlag GmbH. Online ISSN:1439-0418. [Viewed 28.08.2019]. Available: https://onlinelibrary.wiley.com/journal/14390418
Agricultural and Forest Entomology. [Online]. Royal Entomological Society. ISSN: 1461-9563. [Viewed 28.08.2019]. Available: https://onlinelibrary.wiley.com/journal/14619563
Notes
For bachelor Study Program “Sustainable forestry” students