Nematology Courses

NEM 3002

PRINCIPLES OF NEMATOLOGY

3 CREDITS

Instructor: DR. GROVER C. SMART

Prerequisites: None

General Description: Primary emphasis is given to the morphology, anatomy, development, feeding habits, life cycles, and control of nematodes that parasitize plants and animals. The role of plant parasitic nematodes in disease complexes and as vectors of plant viruses will be discussed. Some attention is given to those “free-living” nematodes that inhabit the oceans, fresh water and soil. There will be two 1-hour lectures and one 2-hour laboratory per week.

Grading: Course grade will be derived from two lecture examinations, the final examination, a laboratory experiment, and a laboratory practical examination.

Course Outline:

Introduction and overview Nematodes as vectors of viruses
Morphology and anatomy Nematode/fungus and nematode/bacterium interactions
Reproduction, sex determination, embryology, life cycle Nematode control
Classification
Nematode parasites of insects
Orders Mermithida, Rhabditida,
Tylenchida, Aphelenchida
Free-living marine nematodes
Free-living soil and freshwater nematodes
Nematode parasites of insects
Hookworms, lungworms, roundworms, pinworms, elephantiasis, dog heartworm, guineaworm, giant kidneyworm, Trichina worm, whipworm
Predaceous nematodes
Parasites and parasitism
Parasites of plants
Order Tylenchida
Cyst nematodes, root-knot nematodes, lesion nematodes, burrowing nematodes, sting nematodes, awl nematodes, lance nematodes, stem and bulb nematodes, seed-gall nematodes, citrus nematodes, ring nematodes
Order Aphelenchida
Bud and leaf nematodes, coconut palm nematodes, pinewood nematodes
Order Dorylaimida
Dagger nematodes, needle nematodes, stubby-root nematodes
History of nematology

Texts: Viglierchio, D.R. 1991. The world of nematodes.

NEM 5707

PLANT NEMATOLOGY

3 CREDITS

Instructor: DR. DONALD W. DICKSON

Prerequisites: None

General Description: The course provides an overview of plant-parasitic nematodes. Students will learn basic nematode morphology, with emphasis on structures as they relate to identification, growth and development, ecology, life cycle, diseases they cause, disease cycles, interactions with other organisms, and management tactics to control population densities. Upon completion of the course students will be familiar with sampling, extraction, and identification of the most common plant-parasitic nematodes.

Grading: The course grade will be derived from four 10-minute quizzes, midterm and final examinations, an oral report, and a written report.

Course Outline:

Introduction and historical

Interaction with other organism
Diseases and pest complexes
Virus transmission
Morphology and anatomy
Gross morphology, nervous and excretory systems
Digestive and reproductive systems
Management
Strategies, tactics, and integrated pest management
Biological
Chemical
Mechanisms of resistance

Growth and development

Ecology
Population dynamics
Nematode habitats and dispersal patterns

Identification and classification

Plant-parasitic nematodes and the diseases they induce
Nematodes as parasites and pathogens
Mechanisms of pathogenesis
Observing and characterizing symptoms and signs of nematode diseases
Pathology and life cycle of tylenchida -- sedentary endoparasites: Meloidogyne, Globodera, Heterodera, Nacobbus, Tylenchulus, and Rotylenchulus
Migratory endoparasites -- Pratylenchus, Radopholus, Hirschmanniella, Anguina, and Ditylenchus
Ectoparasites -- Belonolaimus, Dolichodorus, Tylenchorhynchus, Hoplolaimus, Helicotylenchus, Rotylenchus, Scutellonema, and Criconemella
Pathology and life cycle of Aphelenchida -- Aphelenchoides and Bursaphelenchus
Pathology and disease cycles of Dorylaimida -- Xiphinema, Trichodorus, Paratrichodorus, and Longidorus

Texts: None

NEM 6101

NEMATODE MORPHOLOGY AND ANATOMY

2 CREDITS

Instructor: DR. GROVER C. SMART

Prerequisites: NEM 3002 or equivalent

General Description: Detailed study of the morphology and anatomy of nematodes respective of ecological niche. Those anatomical features which are most important in nematode recognition and identification will be stressed. The course will have one 1-hour lecture and one 2-hour laboratory per week.

Grading: Course grade will be derived from a midterm examination, a final examination, a laboratory practical examination, and a written report.

Course Outline:

Exoskeleton
External structures
Internal structures

Pseudocoelom

Secretory/excretory system

Hypodermis (epidermis)
Types
Glands
Digestive System
Stomodeum
Intestine
Proctodeum
Glands
Musculature
Types
Structures
Reproductive system
Male
Female
Egg
     Morphology
     Structure and chemical composition
Nervous system
Main system
Sense organs

Texts: Bird, A.F., and Bird, J. 1991. The structure of nematodes. 2nd Ed. Academic Press, San Diego, CA.

NEM 6102

NEMATODE TAXONOMY AND SYSTEMATICS

2 CREDITS

Instructor: DR. GROVER C. SMART

Prerequisites: NEM 6101 or equivalent

General Description: Theory, principles, laws, science, and process of classifying nematodes into categories. Families and genera in the Orders listed below will be studied.

Grading: Course grade will be derived from a midterm examination, a final examination, and a laboratory practical examination.

Course Outline:

Overview of taxonomy, systematics, and classification

Class Adenophorea
Order Dorylaimida
Order Mononchida
Order Mermithida
Order Araeolaimida
Order Chromadorida
Order Desmoscolescida
Order Monhysterida
Order Enoplida

International Code of Zoological Nomenclature

Class Secernentea
Order Tylenchida
Order Aphelenchida
Order Rhabditida

Texts: None; current literature used.

NEM 6201

NEMATODE ECOLOGY

3 CREDITS

Instructor: DR. ROBERT McSORLEY

Prerequisites: None

General Description: This is a 3-credit graduate course examining the biology and behavior of nematode populations and their interactions within the biological community and with the environment. A previous knowledge of nematology may be helpful, but no nematode identification is involved since the course is intended for both nematologists and non-nematologists. Some mathematical treatment will be included, as appropriate for certain topics. The course will have two 1-hour lectures and a 1-hour discussion of current literature each week.

Grading: Grades will be based on a midterm and final exam.

Course Outline:

Nematode life cycles; crop losses to nematodes, statistics

Nematode-host relationships, mechanisms of resistance; and population genetics and host races

Nematode extraction from soil; extraction efficiency

Damage functions; tolerance, economic thresholds

Extraction from roots; factors affecting extraction and sample storage

Interactions of nematodes on host yield; experimental analysis of interactions

Vertical and horizontal spatial distribution; developing sampling plans

Interactions of nematodes and other biotic factors on yield; competition; predation

Abiotic influences in the soil environment; biochemical influences in the soil environment

Biological control of nematodes; biomass, energy

Chemical cues in the life cycle; survival, quiescence anabiosis

Trophic relationships; nematode parameters in ecosystems

Population dynamics, life tables; population dynamics and logistic growth

Community structure, diversity, role of nematodes in decomposition; nematodes and nutrient cycling

Modeling nematode populations; structure of a nematode model

Nematode management; environmental fate of nematicides

Texts: Norton, D.C. 1978. Ecology of plant-parasitic nematodes. Wiley Interscience, New York.