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Laboratory of Comparative Neurobiology
Dalhousie University, Department of Physiology and Biophysics
Sir Charles Tupper Medical Building, Halifax, Nova Scotia, Canada, B3H 1X5

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Note: PDF files of many of these publications are archived <here>
Article	Source
Cummins, S.F., York, P.S., Hanna, P.J., Degnan, B.M. and Croll, R.P. (2008) Expression of prohormone convertase 2 and the generation of neuropeptides in the developing nervous system of the gastropod Haliotis. International Journal of Developmental Biology (accepted pending minor revisions).
Wyeth, R.C., Croll, R.P., Willows, A.O.D., and Spencer, A.N. (2008) 1-phenoxy-2-propanol is a useful anaesthetic for gastropods used in neurophysiology. Journal of Neuroscience Methods (in press).
Staubach, S., Schützner, P., Croll, R.P. and Klussmann-Kolb, A., (2008) Innervation patterns of the cerebral nerves in Haminoea hydatis (Linnaeus 1758) (Gastropoda: Opisthobranchia) – A test for intraspecific variability. Zoomorphology (in press)
Croll, R.P., Currie, S., and Hellou J. (2008) Learned Discourse: Back to basics in aquatic toxicology. Integrated Environmental Assessment and Management 4 (4), 8-9.
Robertson, G.N., Lindsey, B.W., Dumbarton, T.C., Croll, R.P. and Smith, F.M. (2008) The contribution of the swimbladder to buoyancy in the adult zebrafish (Danio rerio): a morphometric analysis. Journal of Morphology. 269, 666–673
Voronezhskaya, E.E., Nezlin, L.P., Odintsova, N.A., Plummer, J.T. and Croll, R.P. (2008) Neuronal development in the larval mussel Mytilus spp. (Mollusca: Bivalvia). Zoomorphology 127, 97–110.
Croll, R.P. and Wang, C. (2007) Possible roles of sex steroids in the control of reproduction in bivalve molluscs. Aquaculture 272, 76–86.
Wang, C. and Croll, R.P. (2007) Estrogen binding sites in the sea scallop: Characterization and possible involvement in reproductive regulation. Comparative Biochemistry and Physiology Part B 148, 303–313.
Robertson, G.N., McGee, C.A.S., Dumbarton, T.C., Croll, R.P. and Smith, F.M. (2007) Development of the swimbladder and its innervation in the zebrafish, Danio rerio. Journal of Morphology 268, 967–985.
Croll, R.P. (2006) Development of embryonic and larval cells containing serotonin, catecholamines and FMRFamide-related peptides in the gastropod mollusc, Phestilla sibogae. Biological Bulletin (Woods Hole) 211, 232-247.
Braubach, O.R, Dickinson, A.J.G., Evans, C.C.E and Croll, R.P. (2006) Neural control of the velum in larvae of the gastropod, Ilyanassa obsoleta. Journal of Experimental Biology 209, 4676-4689
Wang, C. and Croll, R.P. (2006) Effects of sex steroids on spawning in the sea scallop, Placopecten magellanicus. Aquaculture 256 (1-4), 423-432
Finney, J.L., Robertson, G.N., Smith, F.M. and Croll, R.P. (2006) Structure and autonomic innervation of the swimbladder in the zebrafish (Danio rerio). *Journal of Comparative Neurology* 495 (5), 587-606
Pani, A.K., Roghani, A. and Croll, R.P. (2005) Identification of peptide-like substances in the scallop, Placopecten: Possible role in growth and reproduction. Biogenic Amines 19 (1), 47-67
Braubach, O.R. and Croll, R.P. (2004) Evidence that histamine acts as a neurotransmitter in statocyst hair cells in the snail, Lymnaea stagnalis. Journal of Gravitational Physiology 11(3), 57-66
Croll, R.P. and Dickinson, A.J.G. (2004) Form and function of the larval nervous system in molluscs. Invertebrate Reproduction and Development 46 (2-3), 173-187
Wang, C. and Croll, R.P. (2004) Effects of sex steroids on gonadal development and gender determination in the sea scallop, Placopecten magellanicus. Aquaculture 238, 483-498
Croll, R.P., Boudko, D.Y., Pires, A. and Hadfield, M.G. (2003) Transmitter contents of cells and fibers in the cephalic sensory structures of the gastropod mollusc Phestilla sibogae. Cell and Tissue Research 314 (3), 437-448
Croll, R.P. (2003) Complexities of a simple system: New lessons, old challenges and peripheral questions for the gill withdrawal reflex of Aplysia. Brain Research Reviews 43(3), 266-74
Wang, C. and Croll, R.P. (2003) Effects of sex steroids on in vitro gamete release in the sea scallop, Placopecten magellanicus. Invertebrate Reproducion and Development 44 (2-3), 89-100
Dickinson, A.J.G. & Croll, R.P. (2003) Development of the larval nervous system of the gastropod Ilyanassa obsoleta. Journal of Comparative Neurology 466, 187-218
Dickinson, A.J.G. and Croll, R.P. (2001) A culture technique for experimental studies of embryonic development in the pond snail Lymnaea stagnalis. Invertebrate Reproduction and Development 40 (1), 39-48.
Dickinson, A.J.G. and Croll, R.P. (2001) Neurocalcin-like immunoreactivity in embryonic stages of the gastropod molluscs Aplysia californica and Lymnaea stagnalis. Invertebrate Biology 120(3), 201-216.
Croll, R.P. (2001) Catecholamine-containing neurones in the central nervous system and periphery of Aplysia californica. Journal of Comparative Neurology 441(2), 91-105.
Croll, R.P., Boudko, D. and Hadfield, M.G. (2001) Immunohistochemical survey of neurotransmitters in the central ganglia of the gastropod mollusc, Phestilla sibogae. Cell and Tissue Research 305, 417–432.
Dickinson, A.J.G., Croll, R.P., and Voronezhskaya, E.E. (2000) Development of embryonic cells containing serotonin, catecholamines and FMRFamide-related peptides in Aplysia californica. Biological Bulletin (Woods Hole) 199 (3), 305-315.
Croll, R.P. (2000) Insights into early molluscan neuronal development through studies of transmitter phenotypes in embryonic pond snails. Microscopy Research and Technique 49, 570-578.
Pires, A., Croll, R.P. and Hadfield, M.G. (2000) Catecholamines modulate metamorphosis in the opisthobranch gastropod, Phesilla sibogae . Biological Bulletin (Woods Hole) 198 (3), 319-331.
Pani, A.K. and Croll, R.P. (2000) Catechol concentrations in the haemolymph of the scallop Placopecten magellanicus. General and Comparative Endocrinology 118, 48-56.
Leger, J.P., Croll, R.P. and Smith, F. (1999) Regional distribution and extrinsic innervation of neurons in the guinea-pig atria. Journal of Comparative Neurology 407, 303-317.
Ram, J.L., Moore, D., Putchakayala, S., Paredes, A.A., Ma, D. and Croll, R.P. (1999) Serotonergic responses of the siphons and adjacent mantle tissue of the zebra mussel, Dreissena polymorpha. Comparative Biochemistry and Physiology 124C, 211-220.
Dickinson, A.J.G., Nason, J. and Croll, R.P. (1999) Histochemical localization of FMRFamide, serotonin and catecholamine in embryonic Crepidula fornicata (Prosobranchia: Gastropoda). Zoomorphology 119, 49-62.
Voronezhskaya, E.E., Hiripi, L., Elekes, K. and Croll, R.P. (1999) Development of catecholaminergic neurons in the pond snail, Lymnaea stagnalis : I. Embryonic development of dopamine-containing neurons and dopamine-dependent behaviors. Journal of Comparative Neurology 404, 285-296.
Croll, R.P., Voronezhskaya, E.E., Hiripi, L. and Elekes, K. (1999) Development of catecholaminergic neurons in the pond snail, Lymnaea stagnalis : II. Postembryonic development of central and peripheral neurons. Journal of Comparative Neurology 404, 297-309.
Ram, J.L., Gallardo, C.S., Ram, M.I. and Croll, R.P. (1998) Reproduction-associated immunoreactivities in the nervous systems of prosobranch gastropods. Biological Bulletin (Woods Hole) 195, 308-318.
Smith, S.A., Nason, J. and Croll, R.P. (1998) The distribution of catecholamines in the sea scallop, Placopecten magellanicus. Canadian Journal of Zoology 76, 1254-1262.
Pani, A.K and Croll, R.P. (1998) Pharmacological analysis of monoamine synthesis and catabolism in the scallop, Placopecten magellanicus . General Pharmacology 31, 67-73
McCrohan, C.R. and Croll, R.P. (1997) Characterization of an identified cerebrobuccal neuron containing the neuropeptide APGWamide (Ala-Pro-Gly-Trp-NH2) in the snail Lymnaea stagnalis. Invertebrate Neuroscience 2, 273-282.
DeBoer, P.C.M, Jansen, R., Pieneman, A.W., Croll, R.P. and Ter Maat, A. (1997) Functional role of right anterior lobe cerebral neurons in the reproductive behavior of Lymnaea stagnalis. Journal of Neurophysiology 78, 2823-2833.
Croll, R.P., Jackson, D.L. and Voronezhskaya, E.E. (1997) Catecholamine-containing cells in larval and post-larval bivalve molluscs. Biological Bulletin (Woods Hole) 193, 116-124.
Fan, X., Croll, R.P., Wu, B., Fang, L., Shen, S., Painter, S.D. and Nagle, G.T. (1997) Molecular cloning of a cDNA encoding the neuropeptides APGWamide and cerebral peptide 1: Localization of APGWamide-like immunoreactivity in the central nervous system and male reproductive organs of Aplysia . Journal of Comparative Neurology. 387, 53-62.
Smith, S.A. and Croll, R.P. (1997) Mollusca. In: Reproductive Biology of Invertebrates, K.G. Adiyodi and R.G. Adiyodi (Series Editors), Volume VIII, Progress in Reproductive Endocrinology, T. Adams (Volume Editor), Oxford & IBH Publishing Co. Pvt. Ltd., New Delhi, Calcutta, pp 61 - 151 (co-published by John Wiley & Sons, Chichester, New York in 1998).
Ram, J.L., Ram, M.L., Smith, S., & Croll, R.P. (1997) Peptidergic and serotonergic mechanisms regulating spawning and egg-laying behavior in gastropods and bivalves. Malacological Review 30, 1-20.
Ram, J.L., Baidoun, F., M.L. Ram and Croll, R.P. (1997) Cholinergic and peptidergic regulation of siphon/mantle function in the zebra mussel, Dreissena polymorpha. Comparative Biochemistry and Physiology 117 C, 275-282.
Croll, R.P., Baker, M.W., Khabarova, M., Voronezhskaya, E.E. and Sakharov, D.A. (1997) Serotonin depletion following prolonged chlorpromazine treatment in a simpler model system. General Pharmacology 29, 91-96.
Smith, S.A., Nason, J., and Croll, R.P. (1997). Detection of APGWamide-like immunoreactivity in the sea scallop, Placopecten magellanicus . Neuropeptides 31, 155-165.
Baker, M.W., Chiasson, B.J. and Croll, R.P. (1996) Contralateral sprouting and compensatory innervation following a permanent lesion to a ganglionic connective in the snail. Journal of Experimental Biology 199, 2631-2643.
Voronezhskaya, E.E. and Croll, R.P. (1996) Early events in pulmonate neurogenesis. Doklady Akademii Nauk. 347, 281-283 [in Russian].
Sakharov, D.A. and Croll, R.P. (1996) Introduction [to Special Issue on Developmental Aspects of Neurotransmitter Function]. Cellular and Molecular Neurobiology 16, 529-531.
Baker, M.W. and Croll, R.P. (1996) Modulation of neuronal sprouting by serotonin in the CNS of the adult snail. Cellular and Molecular Neurobiology 16, 561-576.
Horackova, M., Croll, R.P., Hopkins, D.A., Losier, A.M. and Armour, J.A. (1996) Morphology of long-term cultures of adult guinea-pig ventricular cardiomyocytes with peripheral cardiac neurons. Tissue and Cell 28, 411-425.
Croll, R.P. and Voronezhskaya, E.E. (1996) Early elements in gastropod neurogenesis. Developmental Biology 173, 344-347.
Sakharov, D.A, Voronezhskaya, E.E., Nezlin, L., Baker, M.W., Elekes, K. and Croll, R.P. (1996) Tyrosine hydroxylase-negative, dopaminergic neurons are targets for transmitter-depleting action of haloperidol in the snail brain. Cellular and Molecular Neurobiology 16, 449-459.
Croll, R.P., Too, C.K.L., Pani, A.K. and Nason, J. (1995) Distribution of serotonin in body tissues of the sea scallop Plactopecten magellanicus. Invertebrate Reproduction and Development 28, 125-135.
Croll, R.P. and Voronezhskaya, E.E. (1995) Early FMRFamide-like immunoreactive cells in gastropod neurogenesis. Acta Biologica Hungarica 46, 295-303.
Baker, M.W., Croll, R.P., Dyakonova, V., Khabarova, M., Sakharov, D.A., Voronezhskaya, E.E., (1995) Mode of action of antipsychotic drugs: lessons from simpler models. Acta Biologica Hungarica 46, 221-227.
Jackson, A.R., MacRae, T.W. and Croll, R.P. (1995) Unusual distribution of tubulin isoforms in the snail Lymnaea stagnalis. Cell and Tissue Research 281, 507-516.
Pani, A.K. and Croll, R.P. (1995) Distribution of catecholamines, indolamines, their precursors and metabolites within the scallop Placopecten magellanicus (Bivalvia, Pectinidae). Cellular and Molecular Neurobiology 15, 371-386.
Too, C.K.L. and Croll, R.P. (1995) Detection of FMRFamide-like immunoreactivity in the sea scallop Placopecten magellanicus. Cell and Tissue Research 281, 295-304.
Croll, R.P. and Baker, M.W. (1995) Serotonergic regulation of in vivo neuritogenesis in the adult snail. Netherlands Journal of Zoology 44, 301-316.
Chiasson, B.J., Baker, M.W. and Croll, R.P. (1994) Morphological changes and functional recovery following axotomy of a serotonergic, cerebrobuccal neuron in the land snail, Achatina fulica. Journal of Experimental Biology 192, 147-167.
Too, C.K.L., Murphy, P.R. and Croll, R.P. (1994) Western blot analysis of formaldehyde-fixed neuropeptides as small as 400 Da on gelatin-coated nitrocellulose paper. Analytical Biochemistry 219, 341-348.
Robertson, G.N., Jackson, P.C. and Croll, R.P. (1994) Enveloped axonal spines: a structural relationship between axons in the rat ciliary ganglion. Synapse 16, 76-80.
Croll, R.P., Nason, J. and Van Minnen, J. (1993) Characterization of neurons in bivalves using antibodies raised against neuropeptides involved in the control of egg-laying in gastropods. Invertebrate Reproduction and Development 24(3), 161-168.
Baker, M.W., Vohra, M.M. and Croll, R.P. (1993) Serotonin depletors, 5,7-dihyroxytyptamine and p-cholorphenylalanine, cause sprouting in the CNS of the adult snail. Brain Research 623, 311-315.
Kerkhoven, R.M., Ramkema, M.D., Van Minnen, J., Croll, R.P., Pin, Th. and Boer, H.H. (1993) Neurons in a variety of molluscs react to antibodies raised against the VD1/RPD2 alpha-neuropeptide of the pond snail Lymnaea stagnalis. Cell and Tissue Research 273, 371-380.
Ram, J.L., Fong, P., Croll, R.P., Nichols, S.J. and Wall, D. (1992) The zebra mussel (Dreissena polymorpha), a new pest in North America: Reproductive mechanisms as possible targets of control strategies. Invertebrate Reproduction and Development 22, 77-86.
Croll, R.P. and Van Minnen, J. (1992) Distribution of the neuropeptide Ala-Pro-Gly-Trp-NH2 (APGWamide) in the nervous system and periphery of the snail Lymnaea stagnalis as revealed by immunocytochemistry and in situ hybridization. Journal of Comparative Neurology 323, 1-8.
Marois, R. and Croll, R.P. (1992) Development of serotonergic cells within the embryonic central nervous system of the pond snail, Lymnaea stagnalis. Journal of Comparative Neurology 322, 255-265.
Smit, A.B., Jimenez, C.R., Dirks, R., Croll, R.P. and Geraerts, W.P.M. (1992). Characterization of a cDNA clone encoding multiple copies of the neuropeptide APGWamide in the mollusc Lymnaea stagnalis. Journal of Neuroscience 12, 1709-1715.
Kerkhoven, R.M., Croll, R.P., Van Minnen, J., Bogerd, J., Ramkema, M.D. and Boer, H.H. (1992) Morphological determination of the VD1/RPD2 neuronal system in the CNS of the pond snail Lymnaea stagnalis using in situ hybridization and immunocytochemistry. Cell and Tissue Research 267, 551-559.
Kerkhoven, R.M., Croll, R.P., Van Minnen, J., Bogerd, J., Ramkema, M.D., Lodder, H. and Boer, H.H. (1991) Determination of axonal targets of the giant neurons VD1 and RPD2 of the pond snail Lymnaea stagnalis . Brain Research 565, 8-16.
Marois, R. and Croll, R.P. (1991) Factors influencing hatching synchrony within the egg mass of the pond snail, Lymnaea stagnalis . Invertebrate Reproduction and Development 19, 139-146.
Croll, R.P., Van Minnen, J., Smit, A.B. and Kits, K.S. (1991) APGWamide: molecular, histological and physiological examination of a novel neuropeptide. In: Molluscan Neurobiology, K.S. Kits, H.H. Boer and J. Joose (Eds.) North Holland Publishing, Amsterdam, pp. 248-254.
Kerkhoven, R.M., Croll, R.P., Van Minnen, J., Bogerd, J., Ramkema, M.D. and Boer, H.H. (1991). The VD1/RPD2 neuronal system in the CNS of Lymnaea stagnalis and homologous systems in other molluscs with particular reference to the innervation of the auricle of the heart. In: Molluscan Neurobiology, K.S. Kits, H.H. Boer and J. Joose (Eds.) North Holland Publishing, Amsterdam, pp. 255-259.
Croll, R.P. and Baker, M.W. (1990) Axonal regeneration and sprouting following injury to the cerebral-buccal connective in the snail, Achatina fulica. Journal of Comparative Neurology 300, 273-286.
Croll, R.P. and Chiasson, B.J. (1990) Distribution of catecholamines and of substances like vertebrate enzymes for the synthesis of catecholamines within the central nervous system of the snail Lymnaea . Brain Research 525, 101-114.
Croll, R.P. and Chiasson, B.J. (1989) Post-embryonic development of serotonin-like immunoreactivity in the central nervous system of the snail, Lymnaea stagnalis. Journal of Comparative Neurology 280, 122-142.
Croll, R.P. (1988) Distribution of monoamines within the central nervous system of the pulmonate snail Achatina fulica. Brain Research 460, 29-49.
Croll, R.P. (1987) Identified neurons and cellular homologies. In: Nervous Systems in Invertebrates, M.A. Ali (Ed.), NATO-ASI Series, Plenum Press, New York, pp. 41-59.
Croll, R.P. and Davis, W.J. (1987) Neural mechanisms of motor program switching in Pleurobranchaea. In: Higher Brain Functions: Recent Explorations of the Brain's Emergent Properties , S.P. Wise (Ed.), J. Wiley & Sons, Inc., New York, pp. 157-179.
Croll, R.P. (1987) Distribution of monoamines in the central nervous system of the nudibranch gastropod Hermissenda crassicornis. Brain Research 405, 337-347.
Croll, R.P., Albuquerque, T. and Fitzpatrick, L. (1987) Hyperphagia resulting from gut denervation in the sea slug, Pleurobranchaea. Behavioral and Neural Biology 47, 212-218.
Croll, R.P. and Lo, R.Y.S. (1986) Distribution of serotonin-like immunoreactivity in the central nervous system of the periwinkle, Littorina littorea (Gastropoda, Prosobranchia, Mesogastropoda). Biological Bulletin (Woods Hole) 171, 426-440.
Croll, R.P. (1986) Modified cobalt staining and silver intensification techniques for use with whole-mount gastropod ganglion preparations. Journal of Neurobiology 17, 569-576.
Croll, R.P. (1985). Sensory control of respiratory pumping in Aplysia californica. Journal of Experimental Biology 117, 15-27.
Croll, R.P., Davis, W.J. and Kovac, M.P. (1985) Neural mechanisms of motor program switching in the mollusc Pleurobranchaea I. Central motor programs underlying ingestion, egestion and the "neutral" rhythm(s). Journal of Neuroscience 5, 48-55.
Croll, R.P., Kovac, M.P. and Davis, W.J. (1985) Neural mechanisms of motor program switching in the mollusc Pleurobranchaea. II. Role of the ventral white cell, AV and B3 buccal neurons. Journal of Neuroscience 5, 56-63.
Croll, R.P., Kovac, M.P., Davis, W.J. and Matera, E.M. (1985) Neural mechanisms of motor program switching in the mollusc Pleurobranchaea . III. Role of the paracerebral neurons and other identified brain neurons. Journal of Neuroscience 5, 64-71.
Kovac, M.P., Davis, W.J., Matera, E.M., Morielli, A., and Croll, R.P. (1985) Learning: Neural mechanisms analyzed in the isolated brain of a previously trained mollusc, Pleurobranchaea californica . Brain Research 331, 275-284.
Davis, W.J., Kovac, M.P., Croll, R.P. and Matera, E.M. (1984) Brain oscillator(s) underlying rhythmic feeding behavior in the mollusc, Pleurobranchaea californica. Journal of Experimental Biology 110, 1-15.
Croll, R.P. (1984) The non-contributing author: An issue of credit and responsibility. Perspectives in Biology and Medicine 27, 401-407.
Croll, R.P. (1983) Gastropod chemoreception. Biological Reviews 58, 293-319.
Kovac, M.P., Davis, W.J., Matera, E.M. and Croll, R.P. (1983) Organization of synaptic inputs to paracerebral feeding command interneurons of Pleurobranchaea californica. I. Excitatory inputs. Journal of Neurophysiology 49, 1517-1538.
Kovac, M.P., Davis, W.J., Matera, E.M. and Croll, R.P. (1983) Organization of synaptic inputs to paracerebral feeding command interneurons of Pleurobranchaea californica. II. Inhibitory inputs. Journal of Neurophysiology 49, 1539-1556.
Davis, W.J., Gillette, R., Kovac, M.P., Croll, R.P. and Matera, E.M. (1983) Organization of synaptic inputs to paracerebral feeding command interneurons of Pleurobranchaea californica. III. Modifications induced by experience. Journal of Neurophysiology 48, 1557-1572.
Croll, R.P. and Davis, W.J. (1982) Motor program switching in Pleurobranchaea: II. Ingestion and egestion in the reduced preparation. Journal of Comparative Physiology 147, 143-154.
Croll, R.P. and Davis, W.J. (1981) Motor program switching in Pleurobranchaea: I. Behavioural and electromyographic study of ingestion and egestion in intact specimens. Journal of Comparative Physiology 145, 277-287.
Chase, R. and Croll, R.P. (1981) Tentacular function in snail olfactory orientation. Journal of Comparative Physiology 143, 357-362.
Chase, R., Croll, R.P. and Zeichner, L.L. (1980) Aggregation in snails, Achatina fulica. Behavioral and Neural Biology 30, 218-230.
Croll, R.P. and Chase, R. (1980) Plasticity of olfactory orientation to foods in the snail, Achatina fulica. Journal of Comparative Physiology 136, 267-277.
Croll, R.P. (1978) A neuroethological study of food-finding behaviour in the African land snail, Achatina fulica. Ph.D. Thesis, McGill University, Montreal, Canada.
Ali, M.A., Croll, R.P. and Jaeger, R. (1978) Phylogenetic survey of sensory functions. In: Sensory Ecology: Perspectives , M.A. Ali (Ed.), NATO-ASI Series, Plenum Press, New York, pp. 11-30.
Croll, R.P. and Chase, R. (1977) A long-term memory for food odors in the land snail, Achatina fulica. Behavioral Biology 19, 261-268.

Note: PDF files of many of these publications are archived <here>

Dickinson, A.J.G. and Croll, R.P. (2001) A culture technique for experimental studies of embryonic development in the pond snail Lymnaea stagnalis. Invertebrate Reproduction and Development 40 (1), 39-48.

Dickinson, A.J.G. and Croll, R.P. (2001) Neurocalcin-like immunoreactivity in embryonic stages of the gastropod molluscs Aplysia californica and Lymnaea stagnalis. Invertebrate Biology 120(3), 201-216.

Croll, R.P. (2001) Catecholamine-containing neurones in the central nervous system and periphery of Aplysia californica. Journal of Comparative Neurology 441(2), 91-105.

Croll, R.P., Boudko, D. and Hadfield, M.G. (2001) Immunohistochemical survey of neurotransmitters in the central ganglia of the gastropod mollusc, Phestilla sibogae. Cell and Tissue Research 305, 417–432.

Dickinson, A.J.G., Croll, R.P., and Voronezhskaya, E.E. (2000) Development of embryonic cells containing serotonin, catecholamines and FMRFamide-related peptides in Aplysia californica. Biological Bulletin (Woods Hole) 199 (3), 305-315.

Croll, R.P. (2000) Insights into early molluscan neuronal development through studies of transmitter phenotypes in embryonic pond snails. Microscopy Research and Technique 49, 570-578.

Pires, A., Croll, R.P. and Hadfield, M.G. (2000) Catecholamines modulate metamorphosis in the opisthobranch gastropod, Phesilla sibogae . Biological Bulletin (Woods Hole) 198 (3), 319-331.

Pani, A.K. and Croll, R.P. (2000) Catechol concentrations in the haemolymph of the scallop Placopecten magellanicus. General and Comparative Endocrinology 118, 48-56.

Leger, J.P., Croll, R.P. and Smith, F. (1999) Regional distribution and extrinsic innervation of neurons in the guinea-pig atria. Journal of Comparative Neurology 407, 303-317.

Ram, J.L., Moore, D., Putchakayala, S., Paredes, A.A., Ma, D. and Croll, R.P. (1999) Serotonergic responses of the siphons and adjacent mantle tissue of the zebra mussel, Dreissena polymorpha. Comparative Biochemistry and Physiology 124C, 211-220.

Dickinson, A.J.G., Nason, J. and Croll, R.P. (1999) Histochemical localization of FMRFamide, serotonin and catecholamine in embryonic Crepidula fornicata (Prosobranchia: Gastropoda). Zoomorphology 119, 49-62.

Voronezhskaya, E.E., Hiripi, L., Elekes, K. and Croll, R.P. (1999) Development of catecholaminergic neurons in the pond snail, Lymnaea stagnalis : I. Embryonic development of dopamine-containing neurons and dopamine-dependent behaviors. Journal of Comparative Neurology 404, 285-296.

Croll, R.P., Voronezhskaya, E.E., Hiripi, L. and Elekes, K. (1999) Development of catecholaminergic neurons in the pond snail, Lymnaea stagnalis : II. Postembryonic development of central and peripheral neurons. Journal of Comparative Neurology 404, 297-309.

Ram, J.L., Gallardo, C.S., Ram, M.I. and Croll, R.P. (1998) Reproduction-associated immunoreactivities in the nervous systems of prosobranch gastropods. Biological Bulletin (Woods Hole) 195, 308-318.

Smith, S.A., Nason, J. and Croll, R.P. (1998) The distribution of catecholamines in the sea scallop, Placopecten magellanicus. Canadian Journal of Zoology 76, 1254-1262.

Pani, A.K and Croll, R.P. (1998) Pharmacological analysis of monoamine synthesis and catabolism in the scallop, Placopecten magellanicus . General Pharmacology 31, 67-73

McCrohan, C.R. and Croll, R.P. (1997) Characterization of an identified cerebrobuccal neuron containing the neuropeptide APGWamide (Ala-Pro-Gly-Trp-NH2) in the snail Lymnaea stagnalis. Invertebrate Neuroscience 2, 273-282.

DeBoer, P.C.M, Jansen, R., Pieneman, A.W., Croll, R.P. and Ter Maat, A. (1997) Functional role of right anterior lobe cerebral neurons in the reproductive behavior of Lymnaea stagnalis. Journal of Neurophysiology 78, 2823-2833.

Croll, R.P., Jackson, D.L. and Voronezhskaya, E.E. (1997) Catecholamine-containing cells in larval and post-larval bivalve molluscs. Biological Bulletin (Woods Hole) 193, 116-124.

Ram, J.L., Ram, M.L., Smith, S., & Croll, R.P. (1997) Peptidergic and serotonergic mechanisms regulating spawning and egg-laying behavior in gastropods and bivalves. Malacological Review 30, 1-20.

Ram, J.L., Baidoun, F., M.L. Ram and Croll, R.P. (1997) Cholinergic and peptidergic regulation of siphon/mantle function in the zebra mussel, Dreissena polymorpha. Comparative Biochemistry and Physiology 117 C, 275-282.

Croll, R.P., Baker, M.W., Khabarova, M., Voronezhskaya, E.E. and Sakharov, D.A. (1997) Serotonin depletion following prolonged chlorpromazine treatment in a simpler model system. General Pharmacology 29, 91-96.

Smith, S.A., Nason, J., and Croll, R.P. (1997). Detection of APGWamide-like immunoreactivity in the sea scallop, Placopecten magellanicus . Neuropeptides 31, 155-165.

Baker, M.W., Chiasson, B.J. and Croll, R.P. (1996) Contralateral sprouting and compensatory innervation following a permanent lesion to a ganglionic connective in the snail. Journal of Experimental Biology 199, 2631-2643.

Voronezhskaya, E.E. and Croll, R.P. (1996) Early events in pulmonate neurogenesis. Doklady Akademii Nauk. 347, 281-283 [in Russian].

Sakharov, D.A. and Croll, R.P. (1996) Introduction [to Special Issue on Developmental Aspects of Neurotransmitter Function]. Cellular and Molecular Neurobiology 16, 529-531.

Baker, M.W. and Croll, R.P. (1996) Modulation of neuronal sprouting by serotonin in the CNS of the adult snail. Cellular and Molecular Neurobiology 16, 561-576.

Horackova, M., Croll, R.P., Hopkins, D.A., Losier, A.M. and Armour, J.A. (1996) Morphology of long-term cultures of adult guinea-pig ventricular cardiomyocytes with peripheral cardiac neurons. Tissue and Cell 28, 411-425.

Croll, R.P. and Voronezhskaya, E.E. (1996) Early elements in gastropod neurogenesis. Developmental Biology 173, 344-347.

Sakharov, D.A, Voronezhskaya, E.E., Nezlin, L., Baker, M.W., Elekes, K. and Croll, R.P. (1996) Tyrosine hydroxylase-negative, dopaminergic neurons are targets for transmitter-depleting action of haloperidol in the snail brain. Cellular and Molecular Neurobiology 16, 449-459.

Croll, R.P., Too, C.K.L., Pani, A.K. and Nason, J. (1995) Distribution of serotonin in body tissues of the sea scallop Plactopecten magellanicus. Invertebrate Reproduction and Development 28, 125-135.

Croll, R.P. and Voronezhskaya, E.E. (1995) Early FMRFamide-like immunoreactive cells in gastropod neurogenesis. Acta Biologica Hungarica 46, 295-303.

Baker, M.W., Croll, R.P., Dyakonova, V., Khabarova, M., Sakharov, D.A., Voronezhskaya, E.E., (1995) Mode of action of antipsychotic drugs: lessons from simpler models. Acta Biologica Hungarica 46, 221-227.

Jackson, A.R., MacRae, T.W. and Croll, R.P. (1995) Unusual distribution of tubulin isoforms in the snail Lymnaea stagnalis. Cell and Tissue Research 281, 507-516.

Pani, A.K. and Croll, R.P. (1995) Distribution of catecholamines, indolamines, their precursors and metabolites within the scallop Placopecten magellanicus (Bivalvia, Pectinidae). Cellular and Molecular Neurobiology 15, 371-386.

Too, C.K.L. and Croll, R.P. (1995) Detection of FMRFamide-like immunoreactivity in the sea scallop Placopecten magellanicus. Cell and Tissue Research 281, 295-304.

Croll, R.P. and Baker, M.W. (1995) Serotonergic regulation of in vivo neuritogenesis in the adult snail. Netherlands Journal of Zoology 44, 301-316.

Chiasson, B.J., Baker, M.W. and Croll, R.P. (1994) Morphological changes and functional recovery following axotomy of a serotonergic, cerebrobuccal neuron in the land snail, Achatina fulica. Journal of Experimental Biology 192, 147-167.

Too, C.K.L., Murphy, P.R. and Croll, R.P. (1994) Western blot analysis of formaldehyde-fixed neuropeptides as small as 400 Da on gelatin-coated nitrocellulose paper. Analytical Biochemistry 219, 341-348.

Robertson, G.N., Jackson, P.C. and Croll, R.P. (1994) Enveloped axonal spines: a structural relationship between axons in the rat ciliary ganglion. Synapse 16, 76-80.

Croll, R.P., Nason, J. and Van Minnen, J. (1993) Characterization of neurons in bivalves using antibodies raised against neuropeptides involved in the control of egg-laying in gastropods. Invertebrate Reproduction and Development 24(3), 161-168.

Baker, M.W., Vohra, M.M. and Croll, R.P. (1993) Serotonin depletors, 5,7-dihyroxytyptamine and p-cholorphenylalanine, cause sprouting in the CNS of the adult snail. Brain Research 623, 311-315.

Kerkhoven, R.M., Ramkema, M.D., Van Minnen, J., Croll, R.P., Pin, Th. and Boer, H.H. (1993) Neurons in a variety of molluscs react to antibodies raised against the VD1/RPD2 alpha-neuropeptide of the pond snail Lymnaea stagnalis. Cell and Tissue Research 273, 371-380.

Ram, J.L., Fong, P., Croll, R.P., Nichols, S.J. and Wall, D. (1992) The zebra mussel (Dreissena polymorpha), a new pest in North America: Reproductive mechanisms as possible targets of control strategies. Invertebrate Reproduction and Development 22, 77-86.

Croll, R.P. and Van Minnen, J. (1992) Distribution of the neuropeptide Ala-Pro-Gly-Trp-NH2 (APGWamide) in the nervous system and periphery of the snail Lymnaea stagnalis as revealed by immunocytochemistry and in situ hybridization. Journal of Comparative Neurology 323, 1-8.

Marois, R. and Croll, R.P. (1992) Development of serotonergic cells within the embryonic central nervous system of the pond snail, Lymnaea stagnalis. Journal of Comparative Neurology 322, 255-265.

Smit, A.B., Jimenez, C.R., Dirks, R., Croll, R.P. and Geraerts, W.P.M. (1992). Characterization of a cDNA clone encoding multiple copies of the neuropeptide APGWamide in the mollusc Lymnaea stagnalis. Journal of Neuroscience 12, 1709-1715.

Kerkhoven, R.M., Croll, R.P., Van Minnen, J., Bogerd, J., Ramkema, M.D. and Boer, H.H. (1992) Morphological determination of the VD1/RPD2 neuronal system in the CNS of the pond snail Lymnaea stagnalis using in situ hybridization and immunocytochemistry. Cell and Tissue Research 267, 551-559.

Kerkhoven, R.M., Croll, R.P., Van Minnen, J., Bogerd, J., Ramkema, M.D., Lodder, H. and Boer, H.H. (1991) Determination of axonal targets of the giant neurons VD1 and RPD2 of the pond snail Lymnaea stagnalis . Brain Research 565, 8-16.

Marois, R. and Croll, R.P. (1991) Factors influencing hatching synchrony within the egg mass of the pond snail, Lymnaea stagnalis . Invertebrate Reproduction and Development 19, 139-146.

Croll, R.P., Van Minnen, J., Smit, A.B. and Kits, K.S. (1991) APGWamide: molecular, histological and physiological examination of a novel neuropeptide. In: Molluscan Neurobiology, K.S. Kits, H.H. Boer and J. Joose (Eds.) North Holland Publishing, Amsterdam, pp. 248-254.

Croll, R.P. and Baker, M.W. (1990) Axonal regeneration and sprouting following injury to the cerebral-buccal connective in the snail, Achatina fulica. Journal of Comparative Neurology 300, 273-286.

Croll, R.P. and Chiasson, B.J. (1990) Distribution of catecholamines and of substances like vertebrate enzymes for the synthesis of catecholamines within the central nervous system of the snail Lymnaea . Brain Research 525, 101-114.

Croll, R.P. and Chiasson, B.J. (1989) Post-embryonic development of serotonin-like immunoreactivity in the central nervous system of the snail, Lymnaea stagnalis. Journal of Comparative Neurology 280, 122-142.

Croll, R.P. (1988) Distribution of monoamines within the central nervous system of the pulmonate snail Achatina fulica. Brain Research 460, 29-49.

Croll, R.P. (1987) Identified neurons and cellular homologies. In: Nervous Systems in Invertebrates, M.A. Ali (Ed.), NATO-ASI Series, Plenum Press, New York, pp. 41-59.

Croll, R.P. and Davis, W.J. (1987) Neural mechanisms of motor program switching in Pleurobranchaea. In: Higher Brain Functions: Recent Explorations of the Brain's Emergent Properties , S.P. Wise (Ed.), J. Wiley & Sons, Inc., New York, pp. 157-179.

Croll, R.P. (1987) Distribution of monoamines in the central nervous system of the nudibranch gastropod Hermissenda crassicornis. Brain Research 405, 337-347.

Croll, R.P., Albuquerque, T. and Fitzpatrick, L. (1987) Hyperphagia resulting from gut denervation in the sea slug, Pleurobranchaea. Behavioral and Neural Biology 47, 212-218.

Croll, R.P. and Lo, R.Y.S. (1986) Distribution of serotonin-like immunoreactivity in the central nervous system of the periwinkle, Littorina littorea (Gastropoda, Prosobranchia, Mesogastropoda). Biological Bulletin (Woods Hole) 171, 426-440.

Croll, R.P. (1986) Modified cobalt staining and silver intensification techniques for use with whole-mount gastropod ganglion preparations. Journal of Neurobiology 17, 569-576.

Croll, R.P. (1985). Sensory control of respiratory pumping in Aplysia californica. Journal of Experimental Biology 117, 15-27.

Croll, R.P., Davis, W.J. and Kovac, M.P. (1985) Neural mechanisms of motor program switching in the mollusc Pleurobranchaea I. Central motor programs underlying ingestion, egestion and the "neutral" rhythm(s). Journal of Neuroscience 5, 48-55.

Croll, R.P., Kovac, M.P. and Davis, W.J. (1985) Neural mechanisms of motor program switching in the mollusc Pleurobranchaea. II. Role of the ventral white cell, AV and B3 buccal neurons. Journal of Neuroscience 5, 56-63.

Croll, R.P., Kovac, M.P., Davis, W.J. and Matera, E.M. (1985) Neural mechanisms of motor program switching in the mollusc Pleurobranchaea . III. Role of the paracerebral neurons and other identified brain neurons. Journal of Neuroscience 5, 64-71.

Kovac, M.P., Davis, W.J., Matera, E.M., Morielli, A., and Croll, R.P. (1985) Learning: Neural mechanisms analyzed in the isolated brain of a previously trained mollusc, Pleurobranchaea californica . Brain Research 331, 275-284.

Davis, W.J., Kovac, M.P., Croll, R.P. and Matera, E.M. (1984) Brain oscillator(s) underlying rhythmic feeding behavior in the mollusc, Pleurobranchaea californica. Journal of Experimental Biology 110, 1-15.

Croll, R.P. (1984) The non-contributing author: An issue of credit and responsibility. Perspectives in Biology and Medicine 27, 401-407.

Croll, R.P. (1983) Gastropod chemoreception. Biological Reviews 58, 293-319.

Kovac, M.P., Davis, W.J., Matera, E.M. and Croll, R.P. (1983) Organization of synaptic inputs to paracerebral feeding command interneurons of Pleurobranchaea californica. I. Excitatory inputs. Journal of Neurophysiology 49, 1517-1538.

Kovac, M.P., Davis, W.J., Matera, E.M. and Croll, R.P. (1983) Organization of synaptic inputs to paracerebral feeding command interneurons of Pleurobranchaea californica. II. Inhibitory inputs. Journal of Neurophysiology 49, 1539-1556.

Davis, W.J., Gillette, R., Kovac, M.P., Croll, R.P. and Matera, E.M. (1983) Organization of synaptic inputs to paracerebral feeding command interneurons of Pleurobranchaea californica. III. Modifications induced by experience. Journal of Neurophysiology 48, 1557-1572.

Croll, R.P. and Davis, W.J. (1982) Motor program switching in Pleurobranchaea: II. Ingestion and egestion in the reduced preparation. Journal of Comparative Physiology 147, 143-154.

Croll, R.P. and Davis, W.J. (1981) Motor program switching in Pleurobranchaea: I. Behavioural and electromyographic study of ingestion and egestion in intact specimens. Journal of Comparative Physiology 145, 277-287.

Chase, R. and Croll, R.P. (1981) Tentacular function in snail olfactory orientation. Journal of Comparative Physiology 143, 357-362.

Chase, R., Croll, R.P. and Zeichner, L.L. (1980) Aggregation in snails, Achatina fulica. Behavioral and Neural Biology 30, 218-230.

Croll, R.P. and Chase, R. (1980) Plasticity of olfactory orientation to foods in the snail, Achatina fulica. Journal of Comparative Physiology 136, 267-277.

Croll, R.P. (1978) A neuroethological study of food-finding behaviour in the African land snail, Achatina fulica. Ph.D. Thesis, McGill University, Montreal, Canada.

Ali, M.A., Croll, R.P. and Jaeger, R. (1978) Phylogenetic survey of sensory functions. In: Sensory Ecology: Perspectives , M.A. Ali (Ed.), NATO-ASI Series, Plenum Press, New York, pp. 11-30.