Larry Roberts, Professor Emeritus of Biology at Texas Tech University and an adjunct professor at Florida International University, has extensive experience teaching invertebrate zoology, marine biology, parasitology, and developmental biology. He received his ScD in parasitology at the Johns Hopkins University and is the lead author of Schmidt and Roberts' Foundations of Parasitology, sixth edition. Roberts is also co-author of Integrated Principles of Zoology, Biology of Animals, and Animal Diversity. He's published numerous research articles and reviews (listed below) and his hobbies include scuba diving, underwater photography, and tropical horticulture.
E-mail: Lroberts1@compuserve.com
Publications by Larry Roberts
Roberts, L.S. 1956. Ophiotaenia grandis La Rue (Cestoda:
Proteocephalidae) in McCurtain County, Oklahoma. J. Parasit. 42:20.
Roberts, L.S. 1957. Parasites of the carp, Cyprinus carpio
L., in Lake Texoma, Oklahoma. J. Parasit. 43:54.
Mirza, M.B., and L.S. Roberts. 1957. A redescription of Dracunculus
from a snake, Natrix sipedon L. Zeitschr. Parasitenk. 18:40-43.
Roberts, L.S. 1961. The influence of population density on patterns
and physiology of growth in Hymenolepis diminuta (Cestoda:Cyclophyllidea)
in the definitive host. Exptl. Parasit. 11:332-371.
Roberts, L.S. 1963. Ergasilus nerkae n. sp. (Copepoda:
Cyclopoida) from British Columbia with a discussion of the copepods
of the E. caeruleus group. Canad. J. Zool. 41:115-124.
Roberts, L.S., and D. Fairbairn. 1965. Metabolic studies on adult
Nippostrongylus brasiliensis (Nematoda: Trichostrongyloidea).
J. Parasit. 51:129-138.
Roberts, L.S. 1965. Ergasilus tenax sp. n. (Copepoda: Cyclopoida)
from the white crappie, Pomoxis annularis Rafinesque. J.
Parasit. 51:987-989
Roberts, L.S. 1966. Developmental physiology of cestodes. I. Host
dietary carbohydrate and the "crowding effect" in Hymenolepis
diminuta. Exptl. Parasit. 18:305-310.
Roberts, L.S., and E.G. Platzer. 1967. Developmental physiology
of cestodes. II. Effects of changes in host dietary carbohydrate
and roughage on previously established Hymenolepis diminuta.
J. Parasit. 53:85-93.
Roberts, L.S., and F.N. Mong. 1968. Developmental physiology of
cestodes. III. Development of Hymenolepis diminuta in super
infections. J. Parasit. 54:55-62.
Bolla, R.I., and L.S. Roberts. 1968. Gametogenesis and chromosomal
complement in Strongyloides ratti (Nematoda: Rhabdiasoidea).
J. Parasit 54:849-855.
Roberts, L.S. 1969. Ergasilus arthrosis n. sp. (Copepoda:
Cyclopoida) and the taxonomic status of E. versicolor Wilson,
1911, E. elegans Wilson, 1916, and E. celestis Mueller,
1936, from North American fishes. J. Fish. Res. Bd. Canada. 26:997-1011.
Roberts, L.S., and F.N. Mong. 1969. Developmental physiology of
cestodes. IV. In vitro development of Hymenolepis diminuta
in presence and absence of oxygen. Exptl. Parasit. 26:166-174.
Roberts, L.S. 1970. Ergasilus (Copepoda: Cyclopoida): A
revision and key to the species in North America. Trans. Amer.
Microsc. Soc. 89:134-161.
Platzer, E.G., and L.S. Roberts. 1969. Developmental physiology
of cestodes. V. Effects of some vitamin deficient diets and host
coprophagy prevention on development of Hymenolepis diminuta.
J. Parasit. 55:1143-1152.
Roberts, L.S. 1969. Ergasilus cerastes sp. n. (Copepoda:
Cyclopoida) from North American catfishes. J. Parasit. 55:1266-1270.
Platzer, E.G., and L.S. Roberts. 1970. Developmental physiology
of cestodes. VII. Vitamin B6 and Hymenolepis diminuta:
Vitamin levels in the cestode and effects of deficiency on phosphorylase
and transaminase activities. Comp. Biochem. Physiol. 35:535-552.
Bolla, R.I., and L.S. Roberts. 1970. Developmental physiology
of cestodes VIII. Inhibition of ribonucleic acid synthesis
by actinomycin-D in developing Hymenolepis diminuta.
J. Parasit. 56:1151-1158.
Roberts, L.S. 1970. BOOK REVIEW. The Physiology of Cestodes, by
J.D. Smyth, W.H. Freeman and Co., 279 pp. Amer. J. Trop. Med. Hyg. 19:1058.
Platzer, E.G., and L.S. Roberts. 1971. Developmental physiology
of cestodes. VI. The effect of riboflavin deficiency on Hymenolepis
diminuta. Exptl. Parasit. 28:393-398.
Bolla, R.I., and L.S. Roberts. 1971. Developmental physiology
of cestodes 2E IX. Cytological characteristics of the germinative
region of Hymenolepis diminuta. J. Parasit. 57:267-277.
Roberts, L.S., E. Bueding, and S.A. Orrell. 1972. Developmental
physiology of cestodes. XI. Synthetic activity in various molecular
weight fractions of glycogen during development of Hymenolepis
diminuta. Comp. Biochem. Physiol. 43B:825-836.
Bolla, R.I., and L.S. Roberts. 1971. Developmental physiology
of cestodes 2E X. The effect of crowding on carbohydrate levels
and on RNA, DNA, and protein synthesis in Hymenolepis diminuta.
Comp. Biochem. Physiol. 40A:777-787.
Bolla, R.I., and L.S. Roberts. 1972. Developmental physiology
of cestodes XII. Role of preformed informational RNA on development
of Hymenolepis diminuta. Comp. Biochem. Physiol. 40B:885-892.
Mead, R.W., and L.S. Roberts. 1972. Intestinal digestion and absorption
of starch in the intact rat: Effects of cestode (Hymenolepis
diminuta) infection. Comp. Bioch. Physiol. 41A:749-760.
Roberts, L.S. 1972. Acceptance of the Henry Baldwin Ward Medal.
J. Parasit. 58:192-194.
Roberts, L.S., and F.N. Mong. 1973. Developmental physiology of
cestodes. XIII. Vitamin B6 requirement of Hymenolepis diminuta
during in vitro cultivation. J. Parasit. 59:101-104.
Roberts, L.S. 1972. BOOK REVIEW. Laboratory Guide to Parasitology
with Introduction to Experimental Methods, by Ralph W. Macy and
Allen K. Berntzen. Charles C. Thomas, Springfield, Ill. 1971.
292 pp. J. Parasit. 58:840.
Roberts, L.S. 1973. BOOK REVIEW. Functional Aspects of Parasite
Surfaces, edited by A.E.R. Taylor and R. Muller, Symposia of the
British Society for Parasitology, vol. 10, Blackwell Scientific
Publications, Oxford, England 2E 1972. 114 pp. Trans. Amer. Microsc.
Soc. 92:327-328.
Roberts, L.S. 1973. Modifications in media and surface sterilization
methods for in vitro cultivation of Hymenolepis diminuta. J. Parasit.
59:474-479.
Komuniecki, R., and L.S. Roberts. 1974. Developmental physiology
of cestodes. XIV. Roughage and carbohydrate content of host diet
for optimal growth and development of Hymenolepis diminuta.
J. Parasit. 61:427-433.
Insler, G.D., and L.S. Roberts. 1976. Hymenolepis diminuta:
Lack of pathogenicity in the healthy rat host. Exp. Parasit. 39:351-357.
Dendinger, J.E., and L.S. Roberts. 1977. Regulation of glycogen
synthase in the rat tapeworm, Hymenolepis diminuta. I.
Enzyme activity during development and with crowding. Comp. Biochem.
Physiol. 58B:215-219.
Dendinger, J.E., and L.S. Roberts. 1977. Regulation of glycogen
synthase in the rat tapeworm, Hymenolepis diminuta. II.
Control of enzyme activity by glucose and glycogen. Comp. Biochem.
Physiol. 58B:231-236.
Surgan, M.H., and L.S. Roberts. 1976. Adsorption of bile salts
by the cestodes, Hymenolepis diminuta and Hymenolepis
microstoma. J. Parasit 62:78-86
Surgan, M.H., and L.S. Roberts. 1976. Effect of bile salts on
the absorption of glucose and oleic acid by the cestodes, Hymenolepis
diminuta and Hymenolepis microstoma. J. Parasit. 62:87-93.
Meyer, M.S., and L.S. Roberts. 1977. Cystobranchus mammillatus
(Malm), a Piscicolidae leech new to North America. Excerta Parasitologica
en memoria del doctor Eduardo Caballero y Caballero. Instituto
de Biologia Publicaciones Especiales, No. 4, pp. 513-517.
Roberts, L.S. 1975. BOOK REVIEW. Catalogue and Synopsis of Caligus,
a Genus of Copepoda (Crustacea) Parasitic on Fishes, by L. Margolis,
Z. Kabata, and R.R. Parker. Bull. Fish. Res. Bd. Canad. 192: 117
pp. Dept. of the Environment, Fisheries and Marine Service, Ottawa.
J. Parasit. 61:801.
Komuniecki, R.W., and L.S. Roberts. 1977. Hexokinase from the
rat tapeworm, Hymenolepis diminuta. Comp. Biochem. Physiol.
57B:45-49.
Komuniecki, R.W., and L.S. Roberts. 1977. Galactose utilization
by the rat tapeworm, Hymenolepis diminuta. Comp. Biochem.
Physiol. 57B:329-333.
Komuniecki, R.W., and L.S. Roberts. 1977. Enzymes of galactose
utilization in the rat tapeworm, Hymenolepis diminuta.
Comp. Biochem. Physiol. 58B:35-38.
Roberts, L.S. 1977. BOOK REVIEW. An Illustrated Laboratory Manual
of Parasitology, 5th ed., by R.M. Cable, Burgess Publishing Co.
ix + 375 pp. J. Protozool. 24:393.
Bricker, K.S., J.E. Gannon, L.S. Roberts, and B.G. Torke. 1978.
Observations on the ecology and distribution of free-living
Ergasilidae (Copepoda: Cyclopoida). Crustaceana 35:313-317.
Roberts, L.S. 1980. Development of Hymenolepis diminutain
its definitive host. In H.P. Arai (ed.) Biology of the Rat Tapeworm,
Hymenolepis diminuta. Academic Press, New York. pp. 356-
423.
Insler, G.D., and L.S. Roberts. 1980. Developmental physiology
of cestodes. XV. A system for testing possible crowding factors
in vitro. J. Exptl. Zool. 211:45-54.
Insler, G.D., and L.S. Roberts. 1980. Developmental physiology
of cestodes. XVI. Effects of certain excretory products on incorporation
of 3H-thymidine into DNA of Hymenolepis diminuta.
J. Exptl. Zool. 211:55-61.
Roberts, L.S., and G.D. Insler. 1982. Developmental physiology
of cestodes. XVII. Some biological properties of putative "crowding
factors" in Hymenolepis diminuta. J. Parasit. 68:263-269.
Davis, R.E., and L.S. Roberts. 1983. Platyhelminthes—Eucestoda.
In K.G. Adiyodi and R.G. Adiyodi (eds.) Reproductive Biology of
Invertebrates.Volume I: Oogenesis, Oviposition and Oosorption.
John Wiley & Sons, Ltd., pp. 109-149.
Davis, R.E., and L.S. Roberts. 1983. Platyhelminthes—Eucestoda.
In K.G. Adiyodi and R.G. Adiyodi (eds.) Reproductive Biology of
Invertebrates. Volume II: Spermatogenesis and Sperm Function.
John Wiley & Sons, Ltd. pp. 131-149.
Roberts, L.S. 1983. Carbohydrate metabolism. In C. Arme and P.W.
Pappas (eds.) Biology of the Eucestoda. Vol. 2. Academic Press
Inc. (London) Ltd. pp. 343-390.
Wack, M., R. Komuniecki, and L.S. Roberts. 1983. Amino acid metabolism
in the rat tapeworm, Hymenolepis diminuta. Comp. Biochem.
Physiol. 74B:399-402.
Zavras, E.T., and L.S. Roberts. 1984. Developmental physiology
of cestodes: Characterization of putative crowding factors in
Hymenolepis diminuta. J. Parasit. 70:937-944.
Zavras, E.T., and L.S. Roberts. 1985. Developmental physiology
of cestodes: Cyclic nucleotides and the identity of putative crowding
factors in Hymenolepis diminuta. J. Parasit. 71:96-105.
Roberts, L.S. 1987. BOOK REVIEW. Living Together. The Biology
of Animal Parasites, by W. Trager, Plenum Press, New York
and London. 1986. xii + 467 pp. J. Parasit. 73:756.
Davis, R.E., and L.S. Roberts. 1989. Platyhelminthes - Eucestoda.
In K.G. Adiyodi and R.G. Adiyodi (eds.) Reproductive Biology
of Invertebrates.Volume IV. Part A. Fertilization, Development
and Parental Care. Oxford and IBH Publishing Co., New Delhi,
pp. 91-133.
Wages, S.E., and L.S. Roberts. 1990. Effect of host feeding and
available glucose on glycogen synthase and phosphorylase activities
in Hymenolepis diminuta and Vampirolepis microstoma.
J. Parasit. 76:796-804.
Cook, R.L., and L.S. Roberts. 1991. In vivo effects of putative
crowding factors on development of Hymenolepis diminuta.
J. Parasit. 77:21-25.
Roberts, L.S. 1991. The Underwater World of Sport Diving.
C.V. Mosby Co., St. Louis. 224 pp.
Roberts, L.S. 1991. Presentation of the Bueding-von Brand
Award to Donald Fairbairn. J. Parasit. 77:841-842.
Roberts, L.S. 1992. The nature of coral reefs. Florida
Oceanographic 13(3):4-7.
Roberts, L.S., and R.E. Davis. 1993. Platyhelminthes—Eucestoda.
Sexual differentiation and control of development in Eucestoda.
In K.G. Adiyodi and R.G. Adiyodi (eds.) Reproductive Biology
of Invertebrates. Volume V, Sexual Differentiation and
Behaviour. Oxford and IBH Publishing Co., New Delhi. pp. 75-103.
Roberts, L.S., and C.R. Kennedy. 1993. Platyhelminthes—
Eucestoda. In K.G. Adiyodi and R.G. Adiyodi (eds.) Reproductive
Biology of Invertebrates. Volume VI, Part A, Asexual Reproduction
and Reproductive Strategies. Oxford and IBH Publishing Co.,
New Delhi. pp. 197-218.
Hickman, C.P., Jr., L.S. Roberts, and A. Larson. 2000. Animal Diversity. 2nd ed., McGraw-Hill Publishers, Dubuque, Iowa. 448 pp.
Roberts, L.S., and J. Janovy, Jr. 2000. Gerald D. Schmidt and
Larry S. Roberts' Foundations of Parasitology, 6th ed. McGraw-Hill Publishers, Dubuque, Iowa. 688 pp.
Hickman, C.P., Jr., L.S. Roberts, and A. Larson. 1997. Integrated
Principles of Zoology, 10th ed., Wm. C. Brown Publishers,
Dubuque, Iowa. 928 pp.
Hickman, C.P., Jr., L.S. Roberts, and A. Larson. 1998. Biology
of Animals, 7th ed. McGraw Hill, Dubuque, Iowa. 784 pp.
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