Book reviews

PROGRESS IN ENVIRONMENTAL MUTAGENESIS AND CARCINOGENESIS, PROGRESS IN MUTATION RESEARCH, VOLUME 2, by A. Kappas, Biology Department, Nuclear Research Center Democritus, Athens (Greece), 205 pages (including 49 tables, 69 figures, concluding remarks of 3 pages, and a subject index of 3 pages), linen, format 246×171 mm, ISBN 0–444–80334–3, Elsevier/North‐Holland, Biomedical Press, Amsterdam 1981, USS 76.50, hfl. 180.00

CHEMICAL MUTAGENESIS, HUMAN POPULATION MONITORING, AND GENETIC RISK ASSESSMENT, PROGRESS IN MUTATION RESEARCH, VOLUME 3, by K, C. Bora, G. R. Douglas and E. R. Nestmann, Environmental Health Directorate, Ottawa (Canada), 364 pages (including 103 tables, 45 figures, an appendix of seven pages with the Report of the WHO Consultation on Genetic Monitoring for Environmental Effects, and a subject index of 20 pages), linen, format 246 ×171 mm, ISBN 0–444–80352–1, Elsevier/North‐Holland, Biomedical Press, Amsterdam 1982 USS 80.75, hfl. 190.00.

AQUATIC TOXICOLOGY, Volume 1 of a Series, by Lavern J. Weber, Marine Science Center, Oregon State University, Newport, 238 pages (including 35 tables, 18 figures, and a subject index of 13 pages), linen, format 243 × 163 mm, ISBN 0–89004–439–2, Raven Press, New York 1982, US$ 36.72.

CARDIOVASCULAR TOXICOLOGY, TARGET ORGAN TOXICOLOGY SERIES, by Ethard W. van Stee, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina, USA, 400 pages (including 17 tables, 58 figures, and a subject index of 12 pages), linen, format 243 × 163 mm, ISBN 0–89004–576–3, Raven Press, New York 1982, USS 61.20.     

Transformations of pentachlorophenol

ANALYTICAL METHODS IN HUMAN TOXICOLOGY, Part 1, edited by A. S. Curry, Reading, U.K., 319 pages (including 91 figures, 28 tables, references added to each chapter, and a subject index of 19 pages), hard cover, format 242 × 160 mm, ISBN 3–527–26284–9, Verlag Chemie GmbH, Weinheim, Deerfield Beach (Florida), and Basle (1985), DM 148.00, US$65.00.

TOXICOLOGY AND BIOLOGICAL MONITORING OF METALS IN HUMANS (INCLUDING FEASIBILITY AND NEED), by Bonnie L. Carson (Midwest Research Institute, Kansas City, Missouri), Harry V. Ellis III (PRC Engineering, Chicago, Illinois), and Joy L. McCann (Midwest Research Institute, Kansas City, Missouri), 328 pages (including one table on human low‐level exposure to metals: exposure levels, biological effects, concentrations in biological media; including also references for each of 69 metals and a valuable index of 24 pages), hard cover, format 236 × 161 mm, ISBN 0–87371–072‐X, Lewis Publishers, Inc., Chelsea, Michigan 48118 (1986), £45.95.

PHOTOMETRIC METHODS IN INORGANIC TRACE ANALYSIS (Comprehensive Analytical Chemistry Volume XX), by Endre Upor, M. Mohai and Gy Novak, Mecsek Ore‐Mining Enterprise, Pecs, Hungary (translated and revised), 404 pages (including 9 figures, 44 tables, a list of 50 pages (appendix) of the most important reagents, and an index of 6 pages), cloth, format 229 × 157 mm, ISBN 0–444–99588–9, Elsevier Science Publishers B.V., Amsterdam and Akadémiai Kiadò, Budapest (1985), hfl 300.00, US$111.00.

CONCEPTS IN MARINE POLLUTION MEASUREMENTS, edited by Harris H. White, National Oceanic and Atmospheric Administration, Rockville, Maryland 20852, 743 pages (including 153 figures, 51 tables, references added to each paper, and an index of 7 pages), cloth, format 236 × 162mm, ISBN 0–943676–18–5, Maryland Sea Grant Publication, College Park, Maryland 20742 (1984), US$12.50.

DETERMINATION OF ORGANIC SUBSTANCES IN WATER, Volume 1, by Thomas Roy Crompton, 560 pages (including 260 figures, 167 tables, references added to the four chapters, and an index of 12 pages), hard cover, format 236 × 161 mm, ISBN 0–471–90468–6, John Wiley &; Sons, Chichester, New York, Toronto, and Singapore (1985), £49.95.

MARINE AND ESTUARINE GEOCHEMISTRY, by Anne C. Sigleo, U.S. Geological Survey, Reston, Virginia, and Akihiko Hattori, Ocean Research Institute, University of Tokyo, 331 pages (including 121 tables, 60 figures, references added to each chapter, and an index of 3 pages), hard cover, format 235 × 160 mm, ISBN 0–87371–007‐X, Lewis Publishers, Inc., Chelsea, Michigan 48118 (1985), £35.90.

INDOOR AIR AND HUMAN HEALTH, by Richard B. Gammage and Stephen V. Kaye, Oak Ridge National Laboratory, Tennessee 37831, 430 pages (including 54 figures, 91 tables, references added to each chapter, a summary and conclusions of 5 pages, and an index of 6 pages), hard cover, format 242 × 164 mm, ISBN 0–87371–006–1, Lewis Publishers, Inc., Chelsea, Michigan 48118 (1985), £35.90.

INDUSTRIAL EXPOSURES IN ALUMINIUM PRODUCTION, COAL GASIFICATION, COKE PRODUCTION, AND IRON AND STEEL FOUNDING, POLYNUCLEAR AROMATIC COMPOUNDS PART 3, IARC Monograph No. 34 on the Evaluation of the Carcinogenic Risk of Chemicals to Humans, by G. Matanoski et al., Johns Hopkins University, Baltimore, Maryland 21205, 219 pages (including 7 figures, 49 tables, two appendices on chemicals considered in the volume, and already evaulated earlier, a glossary of two pages, and a cumulative index to IARC Monographs 1 to 34 of 21 pages), soft bound, format 240 × 179 mm, ISBN 92–832–1234–7, International Agency for Research on Cancer, Lyon and Geneva (1984), SFr. 48.00, US$20.00.

BITUMENS, COAL‐TARS AND DERIVED PRODUCTS, SHALE‐OILS AND SOOTS, POLYNUCLEAR AROMATIC COMPOUNDS PART 4, IARC Monograph No. 35 on the Evaluation of the Carcinogenic Risk of Chemicals to Humans, by E. Bingham et al., University of Cincinnati, Ohio 45267, 271 pages (including 10 figures, 61 tables, glossaries, and a cumulative index to IARC Monographs 1 to 35 of 21 pages), soft bound, format 240 × 179mm, ISBN 92–832–1235–5, International Agency for Research on Cancer, Lyon and Geneva (1985), SFr. 70.00, US$25.00.

THE ROLE OF CHEMICALS AND RADIATION IN THE ETIOLOGY OF CANCER, Volume 10 of Carcinogenesis—A Comprehensive Survey, by Eliezer Huberman and Susan H. Barr, Argonne National Laboratory, Illinois 60439, 538 pages (including 173 figures, 72 tables, references added to each chapter, an index of 10 pages), linen, format 241 × 167 mm, Raven Press, New York City 10036 (1985), US$76.00.

CHEMICAL CARCINOGENS, SECOND EDITION, ACS Monograph 182, by Charles E. Searle, University of Birmingham, England, 1412 pages (including 61 figures and schemes, 178 tables, many formulae, references added to each contribution, an author index of one page, and an excellent subject index of 38 pages), linen, format 235 × 163 mm, ISBN 0–8412–0869–7, American Chemical Society, Washington, DC 20036 (1984), US$155.95 (in U.S.A. and Canada US$129.95).

ALIPHATIC AND POLYHALOGENATED CARCINOGENS, CHEMICAL INDUCTION OF CANCER VOLUME IIIB (STRUCTURAL BASES AND BIOLOGICAL MECHANISMS), by Joseph C. Arcos et al., U.S. Environmental Protection Agency and Tulane University Medical Center, New Orleans, Louisiana, 598 pages (including 23 figures, 77 tables, references added to each section, updating notes, 4 updating appendices, and an index of 28 pages), linen, format 234 × 164 mm, ISBN 0–12–059323, Academic Press, Inc., Orlando, Florida 32887, and London NW1 7DX, U.K. (1985), US$98.50.

ADVANCES IN HEALTH RISK ASSESSMENT FOR SYSTEMIC TOXICANTS AND CHEMICAL MIXTURES, Toxicology and Industrial Health Series Volume 1 (number 4), by Jerry F. Stara and Linda S. Erdreich, U.S. Environmental Protection Agency, Cincinnati, Ohio 45268, 364 pages (including 34 figures, 76 tables, references and discussion remarks after the contributions, a list of participants of 3 pages, and an index of 14 pages), cloth, format 261 × 186 mm, ISBN 0–911131–90–6, Princeton Scientific Publishing Co., Inc., Princeton, New Jersey 08540 (1985), £53.35.

REPRODUCTIVE HAZARDS OF INDUSTRIAL CHEMICALS (an evaluation of animal and human data), by Susan M. Barlow and Frank M. Sullivan, Guy's Hospital Medical School, University of London, U.K., 610 pages (including 3 tables, references (up to 1979, and an index of 11 pages), hard cover, format 235 × 159 mm, ISBN 0–12–078960–4, Academic Press Inc., London, New York and Orlando (1984), USS75.00.

MAXIMUM CONCENTRATIONS AT THE WORKPLACE AND BIOLOGICAL TOLERANCE VALUES FOR WORKING MATERIALS, Reports No. XX and XXI of the Commission for the Investigation of Health Hazards of Chemical Compounds in the Work Area, of the Deutsche Forschungsgemeinschaft (Prof. Dr Dietrich Henschler, University of D‐8700 Würzburg), 92 resp. 94 pages, paper board, format 240 × 170 mm, ISBN 3–527–27332–8 resp. 3–527–27340–9, VCH Verlagsgesellschaft D‐6940 Weinheim (1984 resp. 1985).     

Book Reviews

CARCINOGENESIS AND MUTAGENESIS, by Myron A. Mehlman, Morris F. Cranmer and Raymond E. Shapiro, from the Journal of Environmental Pathology and Toxicology (Official Organ of the American College of Toxicology), 388 pages and 135 tables and figures, 1977, linen, format 261 × 178 mm, ISBN 0–930376–02–1, printed by Pathotox Publishers, Inc., Park Forest South, Illinois 60466, $23.00

WASTE TREATMENT AND UTILIZATION (Theory and Practice of Waste Management) by Murray Moo‐Young and Grahame J. Farquhar, University of Waterloo, Ontario, Canada; 574 pages, 211 illustrations and 513 literature references, linen, format 256 × 182mm, ISBN 0–08–023831–9, printed by Pergamon Press Ltd., Oxford OX3 OBW, England 1979, US$ 70.00 or £32.00.

HANDBOOK ON THE TOXICOLOGY OF METALS by Lars Friberg (S‐10401 Stockholm), Gunnar F. Nordberg (DK‐5000 Odense) and Velimir B. Vouk (WHO, CH‐1211 Geneva), and sponsored by the U.S. Environmental Protection Agency 1979, 709 pages, linen, format 246 × 173 mm, ISBN 0–444–80075–1, printed by Elsevier/North‐Holland Biomedical Press, Amsterdam NL, $117.00/Dfl. 240.00     

Abstracts to forthcoming papers

RECOMMENDED HEALTH‐BASED LIMITS IN OCCUPATIONAL EXPOSURE TO HEAVY METALS, Technical WHO‐Report 647 of a WHO Study Group (Chairman: Professor R. L. Zielhuis, University of Amsterdam) in English, French and Spanish, 1980, 116 pages, no index, many valuable literature references added to each chapter, stiff paper cover, format 200 × 140 mm, ISBN 92–4–120647–0, WHO—Health &; Biomedical Information Programme, CH‐1211 Geneva 27, SFr. 8‐

POLYCYCLIC AROMATIC HYDROCARBONS IN THE AQUATIC ENVIRONMENT: SOURCES, FATES AND BIOLOGICAL EFFECTS, Dr. Jerry M. Neff, Texas A &; M University, College Station, Texas, U.S.A., 262 pages (including a bibliography with literature references of 27 pages, a glossary of abbreviations of two pages and an index of 4 pages), 30 figures, 89 tables, linen, format 230 × 148 mm, ISBN 0–85334–832–4, Elsevier's Applied Science Publishers Ltd., Barking, Essex IG11 OSA, England 1979, £22.50.

EVALUATION OF THE CARCINOGENIC RISK OF CHEMICALS TO HUMANS: SOME METALS AND METALLIC COMPOUNDS, World Health Organization/International Agency for Research on Cancer, IARC Monograph, Volume 23, Lyon 1980, 438 pages (including a preamble and general remarks of 26 pages and a cumulative index for volumes 1–23 (only 4 references related to volume 23) of 20 pages), 36 tables, many valuable literature references added to each chapter, stiff paper cover, format 240 × 180 mm, ISBN 92–832–1223–1, WHO—Health &; Biomedical Information Programme, CH‐1211 Geneva 27, US $30.‐ or SFr. 50.‐     

Book reviews

ACID RAIN, A REVIEW OF THE PHENOMENON IN THE EEC AND EUROPE, by Environmental Resources Limited for the Commission of the European Communities, 159 pages (including a summary, an introduction, findings and conclusions and 13 pages with newest references), 24 figures and 14 tables, stiff paper cover, format 302×212 mm, EUR 8684, ISBN 0 86010 501 6, Graham & Trotman Limited, Sterling House, 66 Wilton Road, London SW1V 1DE, U.K. (1983), £12.50.

STONE DECAY AND CONSERVATION, Atmospheric Pollution, Cleaning, Consolidation and Protection, MATERIAL SCIENCE MONOGRAPHS 11, by Giovanni G. Amoroso and Vasco Fassina, 453 pages (including 301 figures, 72 tables, and a subject index of five pages; references are added to each of the five parts), linen, format 249×174 mm, ISBN 0 444 42146 7, Elsevier Science Publishers B.V., Amsterdam and New York (1983) USS 97.75 or Dfl. 230.‐ or SFr. 170.‐

WEATHERING OF POLYMERS, by Anthony Davies and David Sims, Waltham Abbey, Essex, U.K., 294 pages (including 96 figures, 62 tables, an index of 6 pages; and references (mostly from 1972 to 1979, a few newer ones) added to each chapter), linen, format 230×149 mm, ISBN 0 85334 226 1, Applied Science Publishers, London and New York (1983), £35, (plus £1.75 post/packing).     

Book Reviews

Book reviewed in this article:
Research Priorities for Conservation Biology. Soulé, M. E., and Kohm, K.A., editors. 1989.
Evaluation of Biodiversity Projects. Committee on Criteria and Guidelines for the Evaluation of Projects Designed to Protect or Enhance Biodiversity. 1989.
The Ecology of Australia's Wet Tropics. Proceedings of the Ecological Society of Australia. Volume 15. Kitching, R.L., editor 1988.
Stones of Silence: Journeys in the Himalaya. Schaller, G. B.
Tiger Moon. Sunquist, F., and Sunquist, M. 1988.
The Field Guide to Wildlife Habitats of the Eastern United States. Benyus, J. M. 1989.
The Field Guide to Wildlife Habitats of the Western United States. Benyus, J. M. 1989.
Books Received (September 1988-August 1989) (Some of the books in the list below may be reviewed in future issues.)     

Book Reviews

Book reviewed in this article:
National Forests: Policies for the Future. Volume 2: Protecting Biological Diversity. Wilcove, D. S. 1988.
Reforming the Forest Service. O'Toole, R. 1988.
Seeds and Sovereignty: The Use and Control of Genetic Resources. Kloppenburg, J. R., editor. 1988.
Viable Populations for Conservation. Soule, M. E., editor. 1987.
Models of Nature: Ecology, Conservation and Cultural Revolution in Soviet Russia. Weiner, D. R.
The Conservation of Australian Wetlands. McComb, A. J., and Lake, P. S., editors.     

Book Reviews

SOVIET SCIENCE REVIEWS–SECTION B., CHEMISTRY REVIEWS. Edited by M. E. Vol'pin. Volume 5. Organofluorine Chemistry pp 397. Volume 6. Organophosphorous Chemistry pp 442. OPA Ltd., for Harwood Academic Publishers, 1984. $170 each. Hardback. ISBN 3-7186-0139-7 and ISBN 3-7186-0139-7.

CURRENT TOPICS IN CHINESE SCIENCE-SECTION B., CHEMISTRY. Volume 2, pp 572 and Volume 3, pp 563. Gordon and Breach Science Publishers, 1984. $64 and $68 both soft covers. ISBN 0-677-06230-3 and ISBN 0-677-40385-2.

THE EXPORT OF HAZARD. Transnational Corporations and Environmental Control Issues. edited by Jane H. Ives. 229 pp. Routledge and Kegan Paul: Boston, London and Henley. £14.95. ISBN 07102 0072 2

ENVIRONMENTAL CHEMISTRY by Peter O'Neill. 232 pp. Allen and Unwin 1985. ISBN 0-04-551085-7, £20. ISBN 0-04-551086-5 Pbk, £8.95.     

Book Reviews

SOVIET SCIENCE REVIEWS-SECTION B., CHEMISTRY REVIEWS. Edited by M. E. Vol'pin. Volume 5. Organofluorine Chemistry pp 397. Volume 6. Organophosphorous Chemistry pp 442. OPA Ltd., for Harwood Academic Publishers, 1984. $170 each. Hardback. ISBN 3-7186-0139-7 and ISBN 3-7186-0139-7.

CURRENT TOPICS IN CHINESE SCIENCE-SECTION B., CHEMISTRY. Volume 2, pp 572 and Volume 3, pp 563. Gordon and Breach Science Publishers, 1984. $64 and $68 both soft covers. ISBN 0-677-06230-3 and ISBN 0-677-40385-2.

THE EXPORT OF HAZARD. Transnational Corporations and Environmental Control Issues. edited by Jane H. Ives. 229 pp. Routledge and Kegan Paul: Boston, London and Henley. £14.95. ISBN 07102 0072 2

ENVIRONMENTAL CHEMISTRY by Peter O'Neill. 232 pp. Allen and Unwin 1985. ISBN 0-04-551085-7, £20. ISBN 0-04-551086-5 Pbk, £8.95.     

Quantification of energy related industrial eco-efficiency of China

Improving eco-efficiency is propitious for saving resources and reducing emissions, and has become a popular route to sustainable development. We define two energy-related eco-efficiencies: energy efficiency (ENE) and greenhouse gas (GHG) emission-related eco-efficiency (GEE) using energy consumption and the associated GHG emissions as the environmental impacts. Using statistical data, we analyze China??s energy consumption and GHG emissions by industrial subsystem and sector, and estimate the ENE and GEE values for China in 2007 as 4.871×10⁷ US$/PJ and 4.26×10⁸ US$/TgCO₂eq, respectively. Industry is the primary contributing subsystem of China??s economy, contributing 45.2% to the total economic production, using 79.6% of the energy consumed, and generating 91.4% of the total GHG emissions. We distinguish the individual contributions of the 39 industrial sectors to the national economy, overall energy consumption, and GHG emissions, and estimate their energyrelated eco-efficiencies. The results show that although ferrous metal production contributes only 3.5% to the national industrial economy, it consumes the most industrial energy (20% of total), contributes 16% to the total industrial global warming potential (GWP), and ranks third in GHG emissions. The power and heat sector ranks first in GHG emissions and contributes one-third of the total industrial GWP, although it only consumes about 8% of total industrial energy and, like ferrous metal production, contributes 3.5% to the national economy. The ENE of the ferrous metal and power and heat sectors are only 8 and 2.1×10⁷ US$/PJ, while the GEE for these two sectors are 9 and 4×10⁴ US$/GgCO₂eq, respectively; these are nearly the lowest ENE and GEE values among all 39 industry sectors. Finally, we discuss the possibility of ecoefficiency improvement through a comparison with other countries.     

Book Reviews

METHODS FOR ASSESSING THE EFFECTS OF MIXTURES OF CHEMICALS-Report of IPCS Joint Symposium 6, SCOPE 30 and SGOMSEC 3 edited by: V. B. Vouk, G. C. Butler, A. C. Upton, D. V. Parke, S. C. Asher published by: J. Wiley and Sons, Chichester price; £99.00 ISBN 0 471 911232

PHEROMONES OF SOCIAL BEES, by John B. Free, London: Chapman & Hall 1987. £17.50

THE CONSERVATION OF ECOSYSTEMS AND SPECIES, by Gareth E. Jones, Croom Helm (1987), ISBN 0-7099-1463-6, 277 pp. £27.50 hbk; pbk-not available     

Book Review

AN ENVIRONMENTAL ODYSSEY: People, Pollution and Politics in the Life of a Practical Scientist. Merril Eisenbud, published University of Washington Press, March 1991, 276 pp., illustrated, indexed. ISBN 0-295-96949-0.

“chemistry, Agriculture and the Environment” (Ed. M.L. Richardson) 546 pages, published by Royal Society of Chemistry, 1991. ISBN 0-85186-228-4 E69.50.     

Cover Caption

Cover: Models predicting interactions between the native Iris hexagona (blue lines) and invasive Iris pseudacorus (yellow lines) in different disturbance scenarios. In benign (freshwater) conditions, the invasive eventually drives the native species to extinction (top left). Hurricanes (lower right) reverse this result by increasing salinity, to which the native is better adapted. Depending on frequency, hurricanes can eliminate the invasive entirely or allow the species to coexist. Photo of I.hexagona by Mark Tobler, modified by Karl Hasenstein to represent the duality of species interactions. See pages 164–173.     

Field estimates of growth and mortality of juvenile banana prawns (Penaeus merguiensis)

Postlarval and juvenile Penaeus merguiensis de Man from the Embley River estuary on the north-eastern Gulf of Carpentaria were sampled every 2 wk from September 1986 until August 1989, using a small beam trawl. Settlement of planktonic postlarvae peaked during the pre-wet season (October to December), and declined through the wet season (January to March). Using length-frequency analysis between 12 and 14 cohorts of juvenile prawns were identified each year. Length-frequency analysis and modal progression were used to derive growth rates during the estuarine phase of the life cycle. Growth rates, which could be described by a linear model, ranged from 0.63 to 1.65 mm CL (carapace length) wk^-1. Growth rates were positively influenced by water temperature and negatively influenced by prawn density. Salinity had no effect on growth rates. Prawns spent between 6 and 20 wk in the Embley River before emigrating offshore from the estuary. Weekly instantaneous rates of natural mortality (M) ranged from 0.23 to 0.94, and in general were lowest during the dry season (July to September) and highest during the pre-wet and wet seasons. Only temperature significantly influenced mortality rates, with mortality rates increasing with temperature. By projecting juvenile growth rates forward through time, we established which cohorts contributed to the offshore fishery each year. In 1987 and 1988 the April fishery consisted of prawns which had settled in the river before the end of January each year. Slow growth rates during the pre-wet season of 1988 meant that only cohorts that were settled before early December 1988 contributed to the fishery in April 1989. Whether a cohort contributes to the fishery depends on the settlement date, water temperature and prawn density.     

Gill development, functional and evolutionary implications in the Pacific oyster Crassostrea gigas (Bivalvia: Ostreidae)

Development of the Crassostrea gigas gill was studied in order to better understand the feeding biology of early life stages, identify potentially critical developmental stages which may influence rearing success or recruitment to wild populations, and shed light on the evolution of the basic bivalve gill types. Larvae and juveniles were reared in an experimental hatchery, and larger specimens were obtained from a commercial hatchery. Specimens were relaxed, fixed, dried, and observed using scanning electron microscopy (SEM). The right and left gills developed symmetrically, via a “cavitation–extension” process from the gill buds. The inner demibranchs developed first (V-stage, 0.29–2.70 mm), in a sequential postero-anterior series of homorhabdic filaments. The outer demibranchs developed later (W-stage, from 2.70 mm), also as homorhabdic filaments, synchronously along the gill axis. The principal filaments (PF) developed from the progressive fusion of three ordinary filaments (OF), at a size of 7.50 mm, and the consequent plication was accentuated by the formation of extensive tissue junctions. Effective filament number (number of descending and ascending filaments) showed a marked discontinuity at the transition from the V- to the W- stage of the gill. Filament ciliation showed several important changes: establishment of OF ciliation in the homorhabdic condition (2.70 mm), ciliary de-differentiation of the PF in the heterorhabdic condition (7.50 mm), and establishment of a latero-frontal cirri length gradient from the plical crest to the PF base. Reversal of direction of ciliary beat is also necessary prior to adult functioning of the PF. Three major transitions were identified in C. gigas gill development, each potentially important in rearing success or wild population recruitment: (1) transition from velum to gill at settlement, (2) transition from a V- to a W-shaped gill (2.70 mm), and (3) transition from the homorhabdic to the heterorhabdic condition (7.50 mm). Complete gill development was much more prolonged than in species previously studied. The major ontogenetic differences between the C. gigas heterorhabdic pseudolamellibranch gill and the pectinid heterorhabdic filibranch gill suggest that the heterorhabdic condition evolved independently in these two bivalve families.     

Origin of the antitropical distribution pattern in marine mussels (Mytilus spp.): routes and timing of transequatorial migration

Many marine species, including mussels in the Mytilus edulis species group (i.e. M. edulis L., M. galloprovincialis Lamarck, and M. trossulus Gould), have an antitropical distribution pattern, with closely related taxa occurring in high latitudes of the northern and southern hemispheres but being absent from the tropics. We tested four hypotheses to explain the timing and route of transequatorial migration by species with antitropical distributions. These hypotheses yield different predictions for the phylogenetic relationship of southern hemisphere taxa relative to their northern counter-parts. The three Mytilus species were used to test these hypotheses since they exhibit a typical antitropical distribution and representative taxa occur in both the Pacific and Atlantic. Two types of mtDNA lineages were found among populations of mussels collected from the southern hemisphere between 1988 and 1996; over 90% of the mtDNA lineages formed a distinct subclade which, on average, had 1.4% divergence from haplotypes found exclusively in northern Atlantic populations of M. galloprovincialis. These data indicate that southern hemisphere mussels arose from a migration event from the northern hemisphere during the Pleistocene via an Atlantic route. The remainder of the southern hemisphere lineages (<10%) were very closely related to mtDNA haplotypes found in both M. edulis and M. galloprovincialis in the northern hemisphere, suggesting a second, more recent migration to the southern hemisphere. There was no evidence that southern hemisphere mussels arose from Pacific populations of mussels. Received: 8 December 1998 / Accepted: 8 November 1999     

Rapid assessment of insect pollination services to inform decision-making

Pollinator declines have prompted efforts to assess how land-use change affects insect pollinators and pollination services in agricultural landscapes. Yet many tools to measure insect pollination services require substantial landscape-scale data and technical expertise. In expert workshops, 3 straightforward methods (desk-based method, field survey, and empirical manipulation with exclusion experiments) for rapid insect pollination assessment at site scale were developed to provide an adaptable framework that is accessible to nonspecialist with limited resources. These methods were designed for TESSA (Toolkit for Ecosystem Service Site-Based Assessment) and allow comparative assessment of pollination services at a site of conservation interest and in its most plausible alternative state (e.g., converted to agricultural land). We applied the methods at a nature reserve in the United Kingdom to estimate the value of insect pollination services provided by the reserve. The economic value of pollination services provided by the reserve ranged from US$6163 to US$11,546/year. The conversion of the reserve to arable land would provide no insect pollination services and a net annual benefit from insect-pollinated crop production of approximately $1542/year (US$24∙ha^–1∙year^–1). The methods had wide applicability and were readily adapted to different insect-pollinated crops: rape (Brassica napus) and beans (Vicia faba) crops. All methods were rapidly employed under a low budget. The relatively less robust methods that required fewer resources yielded higher estimates of annual insect pollination benefit.     

Egg production of the Arctic copepod Calanus glacialis: laboratory experiments

Egg production of single female Calanus glacialis Jaschnov fed with Thalassiosira antarctica at super-abundant concentrations (>300 g C l^-1) was determined over several weeks. Experiments were performed directly after collection from the East Greeland Current in June 1987 and 1988, and during resumed feeding after long-term starvation over 4 (October 1988), 4.5 (October 1987) and 6.5 (January 1988) mo. In addition, in June 1987, short-term starvation experiments of 5 and 15 d were conducted. Egg production was closely related to feeding in all experiments. While directly after collection eggs were produced within a few days, it took 2 wk (October 1987 and 1988) and 10 d (January 1988), respectively, to resume egg production after long-term starvation. During long-term starvation periods eggs were not laid. The decrease in total egg production with duration of starvation was due to decreasing clutch size and increasing spawning interval. In contrast, short-term starvation experiments only affected spawning interval. Interannual variability in egg production was high, with much higher clutch sizes in 1988. Average production rates in June 1988 correponded to 5% body C female^-1 d^-1, the maximum was 7.4% (1 274 eggs in 23 d). Carbon content of eggs was 0.40 g egg^-1. C. glacialis is well adapted to pulsed food events in the Arctic by its longevity; its ability to preserve its reproductive potential over several months; its rapid mobilization of ovaries; and by its high egg production rates. The implication of prolonged spawning capacity on life cycle studies is discussed.     

A review of: “Ecological Physical Chemistry”

C. Rossi & E. Tiezzi (Ed). 651 pp. Elsevier, 1991. ISBN 0444874305, £225.50 US.     

Cover Caption

Cover: Climate-change models project warmer air temperatures worldwide (upper left) and decreased summertime precipitation in many regions (upper right), which could result in warmer streams and lower water levels. Such conditions may facilitate the expansion of invasive species, such as this signal crayfish ( Pacifastacus leniusculis ) (photo by Jeremy Monroe, Freshwaters Illustrated). See Special Section, pages 518–592.