R. Sawyer

发表

Cell lineage analysis by intracellular injection of a tracer enzyme.

G. Stent, D. Weisblat, R. Sawyer, 1978, Science.

Ultrastructure of the anterior salivary gland cells of the giant leech, Haementeria ghilianii (Annelida, Hirudinea)

R. Sawyer, B. Walz, K. Schäffner, 1988, Journal of morphology.

North American Freshwater Leeches, Exclusive of the Piscicolidae, with a Key to All Species

R. Sawyer, 1972 .

Comparative Morphological Analysis of Two Species of Turtle Leeches Coexisting in North America (Hirudinea: Glossiphoniidae): Embryological Evidence for Character Displacement

R. Sawyer, 2022, Taxonomy.

The phylogenetic development of brooding behaviour in the hirudinea

R. Sawyer, 1971, Hydrobiologia.

Observations on the marine leech Calliobdella carolinensis (Hirudinea: Piscicolidae), epizootic on the Atlantic menhaden.

R. Sawyer, D. L. Hammond, 1973, The Biological bulletin.

A checklist and key to the marine and fresh water leeches annelida hirudinea of puerto rico and other caribbean islands

W. F. Kinard, R. Sawyer, 1980 .

Definition of a new genus of glossiphoniid leech and a redescription of the type species, Clepsine picta Verrill, 1872

R. Sawyer, J. Barta, 1990 .

New records and species of leeches (Annelida: Hirudinea) from North and South Carolina

R. Sawyer, R. Shelley, 1976 .

Marine leeches of the eastern United States and the Gulf of Mexico with a key to the species

R. Sawyer, R. Overstreet, A. Lawler, 1975 .

Placobdella multilineata (Hirudinea) from the American alligator in Florida.

R. Sawyer, D. Forrester, 1974, The Journal of parasitology.

Why We Need to Save the Medicinal Leech

R. Sawyer, 1981, Oryx.

The medicinal use of leeches in Malta

P. Schembri, R. Sawyer, C. Savona-Ventura, 2002 .

Toward a taxonomic revision of the medicinal leech Hirudo medicinalis Linnaeus, 1758 (Hirudinea: Hirudinidae): re-description of Hirudo troctina Johnson, 1816 from North Africa

R. Sawyer, F. O. Hechtel, 2002 .

History of the Leech Trade in Ireland, 1750–1915: Microcosm of a Global Commodity

R. Sawyer, 2013, Medical History.

Arthropodization in the Hirudinea: evidence for a phylogenetic link with insects and other Uniramia?

R. Sawyer, 1984 .

The biology of the leech Myzobdella lugubris infesting blue crabs and catfish.

R. Sawyer, B. Daniels, 1975, The Biological bulletin.

Notes on two marine leeches (Annelida: Hirudinea) from subantarctic Marion island including a new record

R. Sawyer, A. Villiers, 1976, Hydrobiologia.

A NEW SPECIES OF MARINE LEECH (ANNELIDA: HIRUDINEA) FROM SOUTH CAROLINA, PARASITIC ON THE ATLANTIC MENHADEN, BREVOORTIA TYRANNUS

R. Sawyer, N. Chamberlain, 1972 .

EPIZOOTIC ON THE ATLANTIC MENHADEN 1

R. Sawyer, D. L. Hammond, 1973 .

The juvenile anatomy and post-hatching development of the marine leech Oceanobdella blennii (Knight-Jones, 1940)

R. Sawyer, 1970 .

A New Species of “Tentacled” Marine Fish Leech Parasitic on Notothenia from the Subantarctic Marion and Crozet Islands

R. Sawyer, 1972, Hydrobiologia.

Description and taxonomic analysis of a tuberculated turtle leech from the Outer Banks, North Carolina, USA, provisionally identified as Placobdella multilineata Moore, 1953 (Hirudinea: Glossiphoniidae).

R. Sawyer, 2021, Zootaxa.

Observations on the physiology and phylogeny of colour change in marine and freshwater leeches (Annelida: Hirudinea)

R. Sawyer, K. Dierst-Davies, 1974, Hydrobiologia.

Clitellate cocoons in freshwater deposits since the Triassic

R. Sawyer, M. N. Bose, SVEIN B. MANUM, 1991 .

Notes on the Natural History of the Leeches (Hirudinea) on the George Reserve, Michigan

R. Sawyer, 1968 .

Embryonic cell lineages in the nervous system of the glossiphoniid leech Helobdella triserialis.

G. Stent, D. Weisblat, R. Sawyer, 1980, Developmental biology.

The trade in medicinal leeches in the southern Indian Ocean in the nineteenth century.

R. Sawyer, 1999, Medical History.

The alien Asian leech Barbronia weberi (Blanchard, 1897) (Hirudinea: Salifidae) reported from two disjunct localities in North Carolina, United States, with observations on its biology and potential for laboratory research

R. Sawyer, D. Sawyer, 2018 .

Observations on the natural history and behaviour of Erpobdella punctata (Leidy) (Annelida : Hirudinea).

R. Sawyer, 1970 .

Description of the Southern swamp leech Philobdella floridana (Verrill, 1874) (Annelida: Hirudinea) from the Outer Banks, North Carolina, USA, with a revision of the species.

R. Sawyer, 2019, Zootaxa.

Novel preparation for studying excitation–secretion coupling in the isolated single cell

R. Sawyer, M. S. Berry, P. Jones, 1985, Nature.

Observations on the terrestrial leech Haemopis septagon Sawyer amp; Shelley, 1976 (Annelida: Hirudinea) from the Outer Banks, North Carolina, USA, with a revision of the species.

R. Sawyer, 2019, Zootaxa.