The Sperm Cell : Fertilizing Power, Surface Properties, Motility, Nucleus and Acrosome, Evolutionary Aspects Proceedings of the Fourth International Symposium on Spermatology, Seillac, France, 27 June–1 July 1982

, Jean ANDRE Universite de Paris XI, ORSAY, France. Sperm cells have long been considered as the most highly specialized of all living cells. They surely are, being very diverse, very complex, containing organelles which do not exist in any other cell -such as acrosome or crystallized mitochondria- and being endowed with a very unique behaviour, that is to meet and recognize the ovum, pierce its protective envelopes and inject into its cytoplasm a most precious deposit, the haploid genome of the species. It is Baccio Baccetti's merit to have felt the need for a confrontation of the scientists working on sperm in order to clarify the apparent complexity of the enormous amount of knowledge accumulated on the subject. Thus, he successfully inaugurated the series of the InternationaZ Symposia on SpermatoZogy. The Seillac edition is the fourth in the series. After an initial stage during which morphology was predominant, our meetings have turned more and more towards function. It has been the will of the French Organizing Committee to devote this meeting mainly to Eutherians, and, among those, to man, in connection with the conflicting necessities to help the sterile couples and to contrul the population explosion at the surface of the world. Front Matter....Pages I-XXVI Evaluation and Control of the Fertilizing Power of Sperm....Pages 1-14 Spermatid Differentiation in Man During Senescence....Pages 15-18 Sperm Structure and Function in 70 Year Old Humans....Pages 19-24 In Vitro Studies of the Fertilizing Ability of the Sperm from Adolescent, Adult and Aged Male Syrian Hamsters....Pages 25-28 Apparent Improvement in Human Semen After Long-Term Storage....Pages 29-32 Selection Among Spermatozoa....Pages 33-37 Transport of Spermatozoa of Known Age in the Female Genital Tracts of the Rabbit and Mouse, and Their Performance in vitro ....Pages 38-42 The Fecundity of Sperm Populations in Female Rabbits: Does Sperm Selection Exist?....Pages 43-46 The Capacitation Rate of Rat Sperm in Vitro....Pages 47-50 Interaction of Zona-Free Hamster Eggs with Fresh and Frozen Ram Spermatozoa in vitro....Pages 51-54 Glycolytic Activity of Human Spermatozoa From Normal and Infertile Semen....Pages 55-58 Respiratory Stimulation of Sea Urchin Spermatozoa in a Synthetic Jelly Peptide and the Fragments....Pages 59-62 The Effect of Different Substrate Combinations on the Survival of Ram Cauda Epididymal Spermatozoa exposed to 1 m M - RS α-Chlorohydrin....Pages 63-66 The Behavior of Sperm Before Fertilization....Pages 67-74 Oocyte Structure and the Design and Function of the Sperm Head in Eutherian Mammals....Pages 75-89 Role of the Cumulus in Zona Penetration....Pages 90-93 Freeze-Fracture Observations on the Interaction of Human Spermatozoa with Zona-Free Hamster Oocytes....Pages 94-98 INFLUENCE OF INITIATION OF FORWARD MOTILITY ON THE FERTILIZING ABILITY OF IMMATURE BOAR SPERMATOZOA IN in vivo HOMOLOGOUS and in vitro HETEROLOGOUS SYSTEMS OF IMSEMINATION....Pages 99-102 Acquisition of Zona Binding Structures by Ram Spermatozoa During Epididymal Passage....Pages 103-106 Is Sperm α-L-Fucosidase Responsible for Sperm-Egg Binding in Ciona Intestinalis ?....Pages 107-110 Sperm/Zona Pellucida Reactions Leading to Fertilization of Mouse Eggs in vitro ....Pages 111-114 A Freeze-Fracture Study on Epididymal and Ejaculated Spermatozoa of Macaca Fascicularis ....Pages 115-118 Surface Observations on Some Mammalian Spermatozoa After Rapid-Freezing and Deep-Etching....Pages 119-122 A Localized Surface Antigen of Guinea Pig Sperm is Precipitated by Monoclonal Antibodies to an Apparently “Internal”, Heat-Stable Component....Pages 123-126 Establishment of Sperm Surface Topography During Development Analyzed with Monoclonal Antibodies....Pages 127-130 Sperm Maturation Antigens....Pages 131-134 Distribution of Fibronectin on Cellular Surface During the Rabbit Spermiogenesis....Pages 135-142 Interaction of Guinea-Pig Spermatozoa with Immunoglobulins: Evidence of Fc-Specific Membrane Receptors on Spermatozoa....Pages 143-146 Identification and Localization of Two Boar Sperm-Membrane Proteins....Pages 147-150 Antigenic Determinants on the Sperm Cell Surface....Pages 151-154 Relationship Between Y-Chromosome and H-Y Antigen Expression in Human Spermatozoa....Pages 155-158 Surface Changes in Monkey Spermatozoa During Epididymal Maturation and After Ejaculation....Pages 159-162 E.M. Localization of Sugars Having Affinity for Lectins on the Ram Spermatozoa....Pages 163-166 The Joint Spermatozoa of Dytiscidae....Pages 167-170 The Fate of Secreted Glycoproteins in the Mammalian Epididymis Analysed by Electron Microscopic Autoradiography....Pages 171-174 Epididymal Protein Secretion....Pages 175-178 Some Aspects of Chromatin Organization in Sperm Nuclei....Pages 179-196 Nuclear Proteins in Spermatozoa and Their Interactions with DNA....Pages 197-213 Structural Elements of the Mammalian Sperm Nucleus....Pages 214-217 Transformation and Stabilization of Chromatin in Ram Spermatids....Pages 218-221 Chromatin Aggregation of Human Sperm....Pages 222-226 Presumed Impairment of the X Inactivation During Meiotic Prophase: A Common Phenomenon Causing Spermatogenic Breakdown in Various Cytogenetic Conditions....Pages 227-230 Chromatin Decondensation Ability of the Human Spermatozoon....Pages 231-235 Microtubules and Spermiogenesis....Pages 236-244 Are Microtubules Indispensable for Sperm Morphogenesis ? A Comparative Structural Study....Pages 245-248 Aniline Blue Staining of Human Spermatozoon Chromatin. Evaluation of Nuclear Maturation....Pages 249-252 Cytoplasmic Control of the Transformation of Sperm Nucleus Into Male Pronucleus in the Mouse: An Experimental Approach....Pages 253-257 The Acrosome, Its Hydrolases, and Egg Penetration....Pages 259-273 Induction of Acrosome Reaction in Ciona Intestinalis ....Pages 274-276 Freeze-Fracture Observations on the Ionophore-Induced Acrosomal Reaction in Ram Spermatozoa....Pages 277-280 Acrosomal Activation of Mammalian Sperm....Pages 281-285 Ultrastructural Localization of Proacrosin and Acrosin During the Acrosome Reaction in Ram Spermatozoa....Pages 286-289 Control Mechanisms in Sperm Flagella....Pages 291-303 Sperm Motility: Mechanisms and Control....Pages 304-314 A Study of the Motility of Limulus Polyphemus Spermatozoa Using Quasielastic Light Scattering and Cinematography....Pages 315-320 Studies on Sperm Motility by Laser-Light Scattering....Pages 321-327 Human Sperm Velocities, Evaluation by Microcinematography and Laser Doppler Velocimetry (LDV)....Pages 328-331 Laser Light Scattering Study of Spermatozoa Motility of Domestic Animals....Pages 332-335 Computer Quantitation of Irradiated Hamster Sperm Motility....Pages 336-339 The Evolution of Mammalian Sperm Motility in the Male and Female Reproductive Tracts....Pages 340-344 Movement Characteristics of Hamster Spermatozoa....Pages 345-348 Do Capacitated Human Spermatozoa Show an “Activated” Pattern of Motility?....Pages 349-352 Direction of Rolling in Mammalian Spermatozoa....Pages 353-355 Observation of the Tailwaves of Mouse Spermatozoa....Pages 356-359 Influence of Flagellar Wave Development on Human Sperm Movement in Seminal Plasma....Pages 360-363 Initiation of Sperm Flagellar Movement Using Rat Demembranated Sperm Model: Nucleotide Specificities....Pages 364-367 Direct Evidence That Cyclic AMP is an Indispensable Factor for Initiation of Sperm Motility in Salmonid Fishes....Pages 368-371 Protein-Carboxyl Methylation in Spermatozoa....Pages 372-375 Loss of Activity of Motile Components in Rat Spermatids During Differentiation to Virtually Immotile Testicular Spermatozoa....Pages 376-379 The Movement of Distal Ends of Sperm Flagella with and Without a Terminal Filament....Pages 380-383 Sperm Structure in Relation to Function and Phylogeny....Pages 385-394 Sperm Size, Body Mass and Reproduction in Mammals....Pages 395-398 The Neck Region of Mouse Spermatids: A Morphological and Functional Analysis....Pages 399-402 Study of Spermatozoa in Lemur Hybrids. (Prosimians — Primates)....Pages 403-406 Comparative Histo-Enzymatic Study of Spermatozoa in Monkey and Mouse....Pages 407-410 Acrosome Development During Spermiogenesis and Epididymal Sperm Maturation in Australian Marsupials....Pages 411-414 Evolution of the Mamalian Epididymis....Pages 415-418 Synthesis of Mitochondrial Proteins from Mouse Epididymal Spermatozoa During Spermatogenesis....Pages 419-422 Some Aspects of Spermatogenesis and Spermatology in Teleost Fish....Pages 423-426 Nucleus and Acrosome of Tick Sperm: Position and Structure (With Comparisons Between Ixodid and Argasid Ticks)....Pages 427-430 The Giant Acrosome of Geogarypus (Arachnida, Pseudoscorpiones) and Phylogenetic Considerations....Pages 431-435 A Comparative Study on the Spermatogenesis of Trichoptera and Lepidoptera....Pages 436-439 Spermatozoa and Diptera Phylogeny....Pages 440-445 TWO DIFFERENT LINES IN Tubifex tubifex spermiogenesis....Pages 446-449 Trends in the Evolution of Flatworm Spermatozoa....Pages 450-453 A New Look at Monogenea and Digenea Spermatozoa....Pages 454-457 The Reverse Movement of a Snail Spermatozoon....Pages 458-462 Back Matter....Pages 463-465