Maurice LOİR                                                            maurice loir

Born in 1939,                                                                                                                                                        
1959-1960: radio operator, merchant navy,
1961-1962: radio operator, navy (military service),
1963-1966: Université de Caen, Science degree, MSc thesis,
1967-1999: Biologist (male reproduction) at the Institut National de la Recherche Agronomique,
1979: Thesis, Université de Rennes, Docteur ès Sciences,
1984: Research director,
1999: retirement.

1960: First scuba dives,
1961-1962: sampling of marine benthic diatoms in the sublittoral zone, on the french coast of the Channel,
1974-1997: underwater photography of  marine fauna and flora; Brittany, Irland and mediterranean coast of France
2000-2004: sampling of marine plankton on the south coast of Brittany,

2004-2011: sampling of marine benthic diatoms by scuba diving on the south coast of Brittany,
2005-2015: sampling of marine benthic diatoms by snorkelling on the coasts of the French Lesser Antilles.
2010-2014: sampling of marine benthic diatoms on the coasts of Corfou, Crete, Dalmatia, Greece and Sardinia.                    

Websites Diatom/Index.html

Books and papers

Marine fauna and flora:

Les animaux étranges du bord de mer. 2007. Maurice LOIR, Ed. Ouest-France.

Poissons des côtes de france. 1999, 2007. Maurice LOIR, Camille LUSARDI & Yvette Tavernier, Ed. Ouest-France.

Fonds sous-marins de la Bretagne. 1998. Y. TURQUIER, Camille LUSARDI & Maurice LOIR, Ed. Ouest-France.

Découvrir la faune de Méditerranée. 1996. Maurice LOIR & Camille LUSARDI, Ed. Ouest-France.

L'océan visité. 1994. Maurice LOIR & Camille LUSARDI, Ed. Altamira.

Connaître et reconnaître la faune du littoral. 1981. Y. TURQUIER & Maurice LOIR, Ed. Ouest-France.

Les poissons du bord de mer. 1978, 1992. Maurice LOIR, Camille LUSARDI & Michel TAVERNIER, Ed. Ouest-France.

Les animaux étranges du bord de mer. 1978, 1993. Maurice LOIR, Ed. Ouest-France.


Loir M. (2016) :
Marine Mastogloia Thwaites ex W. Sm. species (Bacillariophyceae) from a North-Eastern Atlantic island. Cryptogamie, Algologie 37 (1), 5-13.

Loir M. & Novarino G. (2013) : Marine Mastogloia Thwaites ex W. Sm. and Stigmaphora Wallich species from the French Lesser Antilles. Diatom Monographs, vol. 16. A. Witkowski (ed.), A.R.G. Gantner Verlag K.G. 133p.

Loir M. (2009) : Le genre Catenula Mereschkowsky (diatomées - Bacillariophyta) des fonds sableux infralittoraux du sud de la Bretagne : six
nouvelles espèces. Cryptogamie, Algologie, 30 (4), 321.

Loir M. (2007) : Le genre Cocconeis Ehrenberg (1837) des fonds sableux de l'infralittoral de Bretagne-Sud. Diatomania 11,  20-29.

Loir M. (2004a) :  Guide des Diatomées. Delachaux et Niestlé, Paris.

Loir M.
& Le Cohu R. (2004b) :  Diatomées de l'Île de Groix. Penn AR Bed, 190-191, 79-83.

Loir M. (2004c) :  Merveilleuses Diatomées. Océans, n° 279, Toulouse.

Biology of the male reproduction

Loir M. 2001. Adenosine receptor-adenylate cyclase systemin the trout testis: involvement in the regulation of germ cell proliferation. Mol Reprod Dev 58: 307-317.

Le Gac F.  Thomas J.L. Mourot B. & Loir M. 2001. In vivo and in vitro effects of prochloraz and nonylphenol ethoxylates on trout spermatogenesis. Aquatic Toxicology 53: 187-200.

Loir M. Le Gac F. Somarakis S. & Pavlidis M. 2001. Sexuality and gonadal cycle of the common dentex (Dentex dentex) inintensive culture. Aquaculture 194: 363-381.

Loir M. 1999. Spermatogonia of rainbow trout: I. morphological characterization, mitotic activity and survival in primary cultures of testicular cells. Mol Reprod Dev 53: 422-433.

Loir M. 1999. Spermatogonia of rainbow trout: II. In vitro study of theinfluence of pituitary hormones, growth factors and steroids on mitotic activity. Mol Reprod Dev 53: 434-442.

Loir M. 1999. Spermatogonia of rainbow trout: III. In vitro study of the proliferative response to extracellular ATP and adenosine. Mol Reprod Dev 53: 443-450.

Le Gac F. & Loir M. 1999. Male reproductive system, fish. Encyclopedia of reproduction 3: 20-30.

Saudrais C. Fierville F. Loir M. Le Rumeur E. Cibert C & Cosson J. 1998. The use of phosphocreatine plus ADP as energy source for motility of membrane-deprived trout spermatozoa. Cell Motil Cytoskeleton 41: 91-106.

Saudrais C. Garber A.T. McKay D.J. Dixon G.H. & Loir M. 1996. Creatine kinase in trout male germ cells: purification, gene expression, and localization in the testis. Mol Reprod Dev 44: 433-442.

Vizziano D. Fostier A. Le Gac F. Loir M. 1996. 20-beta-hydroxysteroid dehydrogenase activity in nonflagellated germ cells of rainbow trout testis. Biol Reprod 54: 167.

Loir M. Sourdaine P. Mendis-Handagama S.M.L.C. & Jegou B. 1995. Cell-cell interactions in the testis of teleosts and elasmobrachs. Microsc Res Tech 32: 533-552.

Labbe C. Maisse G. Muller K. Zachowski A. Kaushik S. & Loir M. 1995. Thermal acclimatation and dietary lipids, alter the composition but not the fluidity of trout sperm plasma membrane. Lipids 30: 23-33.

Cauty C. Loir M. 1995. The interstitial cells of the trout testis (Onchorhynchus mykiss): ultrstructural characterization and changes throughout the reproductive cycle. Tissue & Cell 27: 383-395.

Loir M. Le Gac F. 1994. Insulin-like growth factor-I and -II binding and action on DNA synthesis in rainbow trout spermatognia and spermatocytes. Biol Reprod 51: 1154-1163.

Loir M. 1994. In vitro approach to the control of spermatogonia proliferation in the trout. Mol Cell Endocr 102: 141-150.

Loir M. & Sourdaine P. 1994. Testis cells: isolation and culture. Biochemistry and molecular biology of fishes (Eds Hochachka and Mommsen) vol. 3: 249-272.

Le Gac F. Ollitrault M. Loir M. & Le Bail P. Y. 1992. Evidence for binding and action of growth hormone in trout testis. Biol Reprod 46 949-957.

Malejac M.L. Loir M. & Maisse G. 1990. Membrane properties of spermatozoa from rainbow trout (Oncorhynchus mykiss) and their relationship to the freezing ability of sperm. Aquat Living Res 3: 43-54.

Loir M. 1990. Interstitial cells from the testis of the trout (Onchorhynchus mykiss) in vivo and in primary cultures. Cell Tissue Res 261: 133-144.

Loir M. 1990. Trout steroidogenic  testicular cells in primary cultures. I. Changes in free and conjugated androgen and progestagen secretions: effects of gonadotropin, serum, and lipoproteins. Gen Comp Endocrinol 78: 374-387.

Loir M. 1990. Trout steroidogenic testicular cells in primary cultures. II.Steroidogenic activity of interstitial cells, Sertolicells, and spermatozoa. Gen Comp Endocrinol 78: 388-398.

Loir M. 1990. Trout Sertoli cells and germ cells in primary culture: I. morphological and ultrastructural study. Gamete research 24: 151-169.

Loir M. Labbé C. Maisse G. Pinson A. Boulard G. Mourot B. & Chambeyron F. 1990. Proteins ofseminal fluid and spermatozoa in the trout (Onchorhynchus mykiss): partial characterization and variations. Fish Physiol Biochem 8: 485-495.

Loir M. Cauty C. Planquette P. Le Bail P.Y. 1989. Comparative study of the male reproductive tract in seven families of South-American catfishes. Aquat Living Resour 2: 45-56.

Le Bail P.Y. Margeridon A. Cauty C. Planquette P. Prevost E. & Loir M. 1989. Biologie de la reproduction de Myleus ternetzi. Aquat Living Resour 2: 175-183.

Loir M. Margeridon A. & Cauty C. 1989. Leydig cells in Myleus ternetzi testes. Aquat Living Resour 2: 57-61.

Loir M. Cauty C. & Le Bail P.Y. 1989. Ambisexuality in a South Amarican cichlid: Satanoperca aff. leucosticta. Aquat Living Resour 2: 185-187.

Courtens J.L. Ploen L. & Loir M. 1988. Immunocytochemical localization of protamine in the boar testis. J Reprod Fert 82: 635-644.

Loir M. 1988.Trout Sertoli and Leydig cells: isolation, separation and culture. Gamete Res 20: 437-458.

Loir M. Dupressoir T. Lanneau M. Le Gac F. & Sautière P. 1986. High mobility group proteins in ram spermatids. Exp Cell Res 165: 441-449.

Belaîche D. Loir M. Kruggle W. & Sautière P. 1987. Isolation and characterization of two protamines St1 and St2 from stallion spermatozoa, and amino-acid sequence of the major protamine St1. Biochem Biophys Acta 913: 304-312.

Le Magueresse B. Le Gac F. Loir M. & Jegou B. 1986. Stimulation of rat Sertoli cell secretory activity in vitro by germ cells and residual bodies. J Reprod Fert 77: 489-498.

Dupressoir T. Sautière P. Lanneau M. & Loir M. 1985. Isolation and characterization of the ram spermatids nuclear proteins P1, 3 and T. Exptl Cell Res 161: 63-74.

Loir M. Bouvier D. Fornells M. Lanneau M. & J.A. Subirana. 1985. Interactions of nuclear proteins with DNA during sperm differentiation in the ram. Chromosoma 92: 304-312.

Sautière P. Belaîche D. Martinage A. & Loir M. 1984. Primary structure of the ram (Ovis aries) protamine. Eur J Biochem 144: 121-125.

Loir M. Caraty A. Lanneau A. Menezo Y. Muh J.P. & Sautière P. 1984. Purification and characterization of ubiquitin from mammalian testes. FEBS letters 169: 199-204.

Loir M. & Lanneau M. 1984. Structural function of the basic nuclear proteins in ram spermatids. J Ultastruct Res 86: 262-276.

Courtens J.L. Delaleu B. Dubois M.P. Lanneau M. Loir M. & Rozinek J. 1983. Immunocytochemical localization of protamine in the spermatids of the ram. Gamete Res 8: 21-28.

Feinberg J. Pariset C. Rondard M. Loir M. Lanneau M. Weinman S. & Demaille J. 1983. Evolution of calcium dependent and cyclic AMP dependent regulatory mechanisms during ram spermatogenesis. Developmental Biol 100: 260-265.

David J.C. Vinson D. & Loir M. 1982. Developmental changes of DNA ligase EC- during ram spermatogenesis. Exptl Cell Res 141: 357-364.

Loir M. & Lanneau. 1982. A strategy for an improved separation of mammalian spermatids.Gamete Res 6: 179 188.

Lanneau M. & Loir M. 1982. An electrophoretic investigation of mammalian spermatid-specific nuclear proteins. J Reprod Fert 65: 163-170.

Courtens J.L. & Loir M. 1981. A cytochemical study of nuclear changes in boar, bull, goat, mouse, rat and stallion spermatids. J Ultrastruct Res 74: 327-340.

Courtens J.L. & Loir M. 1981. Ultrastructural detection of basic nucleoproteins: alcoholic phosphotungstic-acid does not bind to arginine residues. J Ultrastruct Res 74: 322-326.

Courtens J.L. & Loir M. 1981. The spermatid manchette of mammals: formation and relation with the nuclear envelope and the chromatin. Reprod Nutrit Dev 21: 467-478

Loir M. 1979. Etude des proteines basiques nucléaires des spermatides du Bélier (Ovis aries). Thèse de doctorat d'état ès Sciences, Rennes, Série C, n° 85.

Loir M. & Courtens J.L. 1979. Nuclear reorganization in ram spermatids. J Ultrastruct Res 67: 309-324.

Loir M. & Lanneau M. 1978. Partial characterization of ram spermatidal basic nuclear proteins. Biochem Biophys Res Comm 80: 975-982.

Loir M. & Lanneau M. 1978. Transformation of ram spermatid chromatin. Exptl Cell Res. 115: 231-243.

Lemon M. & Loir M. 1977. Steroid release in-vitro by 2 luteal cell types in the corpus luteum of the pregnant sow. J Endocr 72 351-359.

Loir M. & Lanneau M. 1977. Separation of mammalian spermatids. Methods in cell biology, vol XV, 55-77.

Lemon M. Loir M. & Mauleon P. 1976. Steroid metabolism of isolated cell types in the corpus luteum of the pregnant sow. Theriogenology 6: 631-632.

Hochereau-De-Reviers M.T. Loir M. & Pelletier J. 1976. Seasonal variations in the response of the testis and luteinizing hormone levels to hemi-castration of adult rams. J Reprod Fert 46: 203-209.

Loir M. 1975. Application de la technique de séparation des cellules par sédimentation à 1g à l'étude des proteines nucléaires des spermatides de Bélier. Ann Biol anim Biochem Biophys 15: 661-668.

Loir M. & Lanneau M. 1975. Isopycnic separation  of ram spermatids in collîdal silica gradients. Exptl Cell Res 92: 499-505.

Loir M. & Lanneau M. 1975. An electrophoretic analysis of the basic nuclear proteins  of ram spermatids. Exptl Cell Res 92: 509-512.

Meistrich M.L. Eng V.W.S. & Loir M. 1973. Temperature effects on the kinetics of spermatogenesis in the mouse. Cell Tissue kinetics 6: 379-393.

Loir M. & Wyrobek A. 1972. Density separation of mouse spermatid nuclei.Exptl Cell Res. 75: 261-265.

Loir M. & Hochereau-De- Reviers M. T. 1972. Deoxyribonucleoprotein changes in ram and bull spermatids. J Reprod Fert 31: 127-130.

Loir M. 1972. Métabolisme de l'acide ribonucléique et des proteines dans les spermatocytes et les spermatides de bélier (Ovis aries). I. Incorporation et devenir de la 3H-uridine. Ann Biol anim Biochem Biophys 12: 203-219.

Loir M. 1972. Métabolisme de l'acide ribonucléique et des proteines dans les spermatocytes et les spermatides de bélier (Ovis aries). II. Variation de l'incorporation et devenir de la 3H-lysine, de la 3H-arginine et de la 35S-cystine. Ann Biol anim Biochem Biophys 12: 411-429.

Loir M. 1972. Métabolisme de l'acide ribonucléique et des proteines dans les spermatocytes et les spermatides de bélier (Ovis aries). III. Etude cytochimique des transformations proteiques dans les vieilles spermatides. Ann Biol anim Biochem Biophys 12: 531-544.

Loir M. 1971. Evolution morphologique des chromosomes meiotiques chez le Bélier (Ovis aries). C. R. Acad Sci Paris 272: 2587-2590.