DR. K.G. ADIYODI, formerly Professor of Physiology and Dean,Faculty of Science, Calicut University, Kerala, India andVice-Chancellor, Cochin University of Science and Technology, Kochi, is now Public Service Commissioner to Government of India,New Delhi. A distinguished invertebrate reproductive biologist, whogave the discipline of invertebrate reproductive biology a global distinctiveness and identity of its own, Dr. K.G. Adiyodi is Founder Secretary of the International Society of Inverebrate Reproduction, Founder Editor-in-Chief of the International Journal of Invertebrate Reproduction and Development, and Founder President of the Indian Society of Invertebrate Reproduction.DR. RITA G. ADIYODI, formerly Rhodes Visiting Fellow, Somerville College, Oxford (1976-78), is Professor of Zoology at CalicutUniversity. She served as President of the Crustacean Reprobiologyand Aquaculture Bureau of India and as Vice-President of the Indian Society of Invertebrate Reproduction. Dr. Rita Adiyodi representedIndia on the International Committee of Comparative Endocrinology.The Adiyodis have worked extensively, over the past three decades,on the endocrinology and physiology of growth and reproduction ofarthropods, chiefly crustaceans.DR. ROGER NEVILLE HUGHES is Lloyd Roberts Professor, Professor of Zoology, in the School of Biological Sciences, University of Wales, Bangor. While maintaining wide interest in evolutionary andbehavioural ecology, he has focussed particularly on the biology ofclonal animals. By adopting the bryozoan Celloporela hyalina which can be propogated sexually and asexually, as a model experimentalorganism, he is able to investigate a range of fundamental problems including gender allocation in simultaneous hermaphrodites, theeffect of temperature on body size and the contribution of crypticspeciation to marine diversity.

"... a trove of information... central message is clear... important and worth reading...." (Entomologia Generalis, Vol 109(12), Dec 2003)

• Preface to the Progress Series. Preface to Volume XI. Obituary. Contributors. Microorganism-induced Parthenogenesis (H. Braig, et al.). Clonal or Sexual Reproduction in Parasites? Recent Advances inMolecular Understanding (D. Rollinson and J. Stothard). Geographic Parthenogenesis in Terrestrial Invertebrates: Generalistor Specialist Clones? (E. Parker Jr). Senescence or Rejuvenation in Asexual Metazoans (D.Martinez). Asexual Reproduction in the Hydrozoa (Cnidaria) (F. Boero, etal.). Genetic Mosaics and Chimeras (R. Hughes). Resource Allocation in Asexual Invertebrates (V. Forbes). Astogeny and Allometry of Modular Colonial Organisms (H. Lasker andJ. Sanchez). Population Processes in Modular Benthic Invertebrates (R.Karlson). Clones and Metapopulations (B. Okamura, et al.). Subject Index. Species Index.

DR. K.G. ADIYODI, formerly Professor of Physiology and Dean,Faculty of Science, Calicut University, Kerala, India andVice-Chancellor, Cochin University of Science and Technology, Kochi, is now Public Service Commissioner to Government of India,New Delhi. A distinguished invertebrate reproductive biologist, whogave the discipline of invertebrate reproductive biology a global distinctiveness and identity of its own, Dr. K.G. Adiyodi is Founder Secretary of the International Society of Inverebrate Reproduction, Founder Editor-in-Chief of the International Journal of Invertebrate Reproduction and Development, and Founder President of the Indian Society of Invertebrate Reproduction.DR. RITA G. ADIYODI, formerly Rhodes Visiting Fellow, Somerville College, Oxford (1976-78), is Professor of Zoology at CalicutUniversity. She served as President of the Crustacean Reprobiologyand Aquaculture Bureau of India and as Vice-President of the Indian Society of Invertebrate Reproduction. Dr. Rita Adiyodi representedIndia on the International Committee of Comparative Endocrinology.The Adiyodis have worked extensively, over the past three decades,on the endocrinology and physiology of growth and reproduction ofarthropods, chiefly crustaceans.DR. ROGER NEVILLE HUGHES is Lloyd Roberts Professor, Professor of Zoology, in the School of Biological Sciences, University of Wales, Bangor. While maintaining wide interest in evolutionary andbehavioural ecology, he has focussed particularly on the biology ofclonal animals. By adopting the bryozoan Celloporela hyalina which can be propogated sexually and asexually, as a model experimentalorganism, he is able to investigate a range of fundamental problems including gender allocation in simultaneous hermaphrodites, theeffect of temperature on body size and the contribution of crypticspeciation to marine diversity.

"... a trove of information... central message is clear... important and worth reading...." (Entomologia Generalis, Vol 109(12), Dec 2003)

• Preface to the Progress Series. Preface to Volume XI. Obituary. Contributors. Microorganism-induced Parthenogenesis (H. Braig, et al.). Clonal or Sexual Reproduction in Parasites? Recent Advances inMolecular Understanding (D. Rollinson and J. Stothard). Geographic Parthenogenesis in Terrestrial Invertebrates: Generalistor Specialist Clones? (E. Parker Jr). Senescence or Rejuvenation in Asexual Metazoans (D.Martinez). Asexual Reproduction in the Hydrozoa (Cnidaria) (F. Boero, etal.). Genetic Mosaics and Chimeras (R. Hughes). Resource Allocation in Asexual Invertebrates (V. Forbes). Astogeny and Allometry of Modular Colonial Organisms (H. Lasker andJ. Sanchez). Population Processes in Modular Benthic Invertebrates (R.Karlson). Clones and Metapopulations (B. Okamura, et al.). Subject Index. Species Index.

DR. K.G. ADIYODI, formerly Professor of Physiology and Dean,Faculty of Science, Calicut University, Kerala, India andVice-Chancellor, Cochin University of Science and Technology, Kochi, is now Public Service Commissioner to Government of India,New Delhi. A distinguished invertebrate reproductive biologist, whogave the discipline of invertebrate reproductive biology a global distinctiveness and identity of its own, Dr. K.G. Adiyodi is Founder Secretary of the International Society of Inverebrate Reproduction, Founder Editor-in-Chief of the International Journal of Invertebrate Reproduction and Development, and Founder President of the Indian Society of Invertebrate Reproduction.DR. RITA G. ADIYODI, formerly Rhodes Visiting Fellow, Somerville College, Oxford (1976-78), is Professor of Zoology at CalicutUniversity. She served as President of the Crustacean Reprobiologyand Aquaculture Bureau of India and as Vice-President of the Indian Society of Invertebrate Reproduction. Dr. Rita Adiyodi representedIndia on the International Committee of Comparative Endocrinology.The Adiyodis have worked extensively, over the past three decades,on the endocrinology and physiology of growth and reproduction ofarthropods, chiefly crustaceans.DR. ROGER NEVILLE HUGHES is Lloyd Roberts Professor, Professor of Zoology, in the School of Biological Sciences, University of Wales, Bangor. While maintaining wide interest in evolutionary andbehavioural ecology, he has focussed particularly on the biology ofclonal animals. By adopting the bryozoan Celloporela hyalina which can be propogated sexually and asexually, as a model experimentalorganism, he is able to investigate a range of fundamental problems including gender allocation in simultaneous hermaphrodites, theeffect of temperature on body size and the contribution of crypticspeciation to marine diversity.

"... a trove of information... central message is clear... important and worth reading...." (Entomologia Generalis, Vol 109(12), Dec 2003)

• Preface to the Progress Series. Preface to Volume XI. Obituary. Contributors. Microorganism-induced Parthenogenesis (H. Braig, et al.). Clonal or Sexual Reproduction in Parasites? Recent Advances inMolecular Understanding (D. Rollinson and J. Stothard). Geographic Parthenogenesis in Terrestrial Invertebrates: Generalistor Specialist Clones? (E. Parker Jr). Senescence or Rejuvenation in Asexual Metazoans (D.Martinez). Asexual Reproduction in the Hydrozoa (Cnidaria) (F. Boero, etal.). Genetic Mosaics and Chimeras (R. Hughes). Resource Allocation in Asexual Invertebrates (V. Forbes). Astogeny and Allometry of Modular Colonial Organisms (H. Lasker andJ. Sanchez). Population Processes in Modular Benthic Invertebrates (R.Karlson). Clones and Metapopulations (B. Okamura, et al.). Subject Index. Species Index.