Canadian Journal Revue canadienne of Zoology de zoologie Contents Sommaire Volume 76, 1998 Volume 76, 1998 January ARTICLES E. Paul Ashley, Gary B. McCullough, and Jeffrey T. Robinson Morphological responses of white-tailed deer to a severe population reduction Karen E. Groff and John H. Youson Fine structure and immunocytochemistry of cells within the endocrine pan- creas of the gar (Lepisosteus osseus) Klas Allander The effects of an ectoparasite on reproductive success in the great tit: a 3-year experimental study Richard E. Brown and David K. Saunders Regulated changes in body mass and muscle mass in molting Blue-winged Teal for an early return to flight Murray W. Lankester, Ing-Marie C. Olsson, Margareta Stéen, and Alvin A. Gajadhar Extra-mammalian larval stages of Elaphostrongylus alces (Nematoda: Protostrongylidae), a parasite of moose (Alces alces) in Fennoscandia Gabriele Uhl and Fritz Vollrath Genital morphology of Nephila edulis: implications for sperm competition in spi- ders Martin Haulena, David J. St. Aubin, and Padraig J. Duignan Thyroid hormone dynamics during the nursing period in harbour seals, Phoca vitulina Karl Sundbaum and Ingemar Naslund Effects of woody debris on the growth and behaviour of brown trout in experimental stream channels Erin M. Bayne and Keith A. Hobson The effects of habitat fragmentation by forestry and agriculture on the abun- dance of small mammals in the southern boreal mixedwood forest I.B. Mjginergd, I.A. Fleming, U.H. Refseth, and K. Hindar Mate and sperm competition during multiple-male spawnings of Atlantic salmon Frank Johansson and Kjell Leonardsson Swimming speeds and activity levels of consumers at various resource and consumer densities under predation risk L. Satora Histological and ultrastructural study of the stomach of the air-breathing Ancistrus multispinnis (Siluriformes, Teleostei) Jonathan A. Akin I[ntra- and inter-sexual aggression in the ground skink (Scincella lateralis) Glenn A. Marvin Interspecific aggression and spatial relationships in the salamanders Plethodon kentucki and Plethodon glutinosus: evidence of interspecific interference competition Kevin R. Butt and Visa Nuutinen Reproduction of the earthworm Lumbricus terrestris Linné after the first mating Christian Nellemann Habitat use by muskoxen (Ovibos moschatus) in winter in an alpine environment Daniel K. Rosenberg, Barry R. Noon, John W. Megahan, and E. Charles Meslow Compensatory behavior of Ensatina eschscholtzii in biological corridors: a field experiment John F. Barimo and Michael L. Fine Relationship of swim-bladder shape to the directionality pattern of underwa- ter sound in the oyster toadfish Sarah Grimké Faragher and Robert G. Jaeger Tadpole bullies: examining mechanisms of competition in a com- munity of larval anurans Stephen B. Vander Wall and Jamie W. Joyner Recaching of Jeffrey pine (Pinus jeffreyi) seeds by yellow pine chipmunks (Tamias amoenus): potential effects on plant reproductive success C-2 Kevin L. Campbell and Robert A. MacArthur Nutrition and the energetic tactics of muskrats (Ondatra zibethicus): morphological and metabolic adjustments to seasonal shifts in diet quality D.J. Mayo and D. Burton Beta,-adrenoceptors mediate melanosome dispersion in winter flounder (Pleuronectes americanus) Marlene M. Machmer and Ronald C. Ydenberg The relative roles of hunger and size asymmetry in sibling ag- gression between nestling ospreys, Pandion haliaetus Hakan Sand Costs of reproduction in female moose (Alces alces) as measured by means of phenotypic correlations NOTES W. Trevor Claxton and Elizabeth G. Boulding A new molecular technique for identifying field collections of zebra mussel (Dreissena polymorpha) and quagga mussel (Dreissena bugensis) veliger larvae applied to eastern Lake Erie, Lake Ontario, and Lake Simcoe Robin W. Baird, Pamela M. Willis, Tamara J. Guenther, Paul J. Wilson, and Bradley N. White An_ intergeneric hybrid in the family Phocoenidae February / février ARTICLES Jianming Tang, John K. Moulton, Kenneth Pruess, Eddie W. Cupp, and Thomas R. Unnasch Genetic varia- tion in North American black flies in the subgenus Psilopelmia (Simulium: Diptera: Simuliidae) Anders Alanaraé, Svante Winberg, Eva Brannas, Anders Kiessling, Erik Héglund, and Ulf Elofsson Feeding behaviour, brain serotonergic activity levels, and energy reserves of Arctic char (Salvelinus alpinus) within a domi- nance hierarchy Don White, Jr., Katherine C. Kendall, and Harold D. Picton Grizzly bear feeding activity at alpine army cutworm moth aggregation sites in northwest Montana M.C. Miller, M. Kurzhals, A.E. Hershey, and R.W. Merritt Feeding behavior of black fly larvae and retention of fine particulate organic matter in a high-gradient blackwater stream Ahti E.I. Pyérnila, Ahti P. Putaala, and Raimo K. Hissa_ Fibre types in breast and leg muscles of hand-reared and wild grey partridge (Perdix perdix) Daniel L. Allen and David L. Otis Relationship between deer mouse population parameters and dieldrin contamination in the Rocky Mountain Arsenal National Wildlife Refuge W. James Rettie and Francois Messier Dynamics of woodland caribou populations at the southern limit of their range in Saskatchewan Cynthia L. Gerstner and Paul W. Webb The station-holding performance of the plaice Pleuronectes platessa on artificial substratum ripples Jouko Kumpula, Alfred Colpaert, and Mauri Nieminen Reproduction and productivity of semidomesticated reindeer in northern Finland J.D. Matheson and D.W. Larson Influence of cliffs on bird community diversity Heather L. Waye and Patrick T. Gregory Determining the age of garter snakes (Thamnophis spp.) by means of skeletochronology Manfred Zimmermann and John R. Spence Phenology and life-cycle regulation of the fishing spider Dolomedes triton Walckenaer (Araneae, Pisauridae) in central Alberta P. Eckhard Witten, Wolfgang Villwock, and Lothar Renwrantz Haematogram of the tilapia Oreochromis niloticus (Cichlidae, Teleostei) and application of a putative phenoloxidase for differentiating between neutrophilic granulocytes and monocytes Laurence Packer, John S. Taylor, Dolores A. Savignano, Catherine A. Bleser, Cynthia P. Lane, and Laura A. Sommers Population biology of an endangered butterfly, Lycaeides melissa samuelis (Lepidoptera; Lycaenidae): genetic variation, gene flow, and taxonomic status Contents / Sommaire C-3 Anindo Choudhury and Terry A. Dick Patterns and determinants of helminth communities in the Acipenseridae | (Actinopterygii: Chondrostei), with special reference to the lake sturgeon, Acipenser fulvescens R.H. Mattlin, N.J. Gales, and D.P. Costa Seasonal dive behaviour of lactating New Zealand fur seals (Arcto- cephalus forsteri) Iya I. Kiknadze, Malcolm G. Butler, Karlygash G. Aimanova, Evgenya N. Andreeva, Jon Martin, and Larissa I. Gunderina Divergent cytogenetic evolution in Nearctic and Palearctic populations of sibling species in Chironomus (Camptochironomus) Kieffer | NOTES John K. Tucker and Fredric J. Janzen Order of oviposition and egg size in the red-eared slider turtle (Trachemys | scripta elegans) L.L. Eberhardt Applying difference equations to wolf predation Dennis L. Claussen, Michael S. Finkler, and Meghan M. Smith Erratum: Thread trailing of turtles: methods for evaluating spatial movements and pathway structure March / mars ARTICLES Norman C. Negus and Patricia J. Berger Reproductive strategies of Dicrostonyx groenlandicus and Lemmus sibiricus in high-arctic tundra F. Thomas, C. Liautard, F. Cézilly, and F. Renaud A finite time horizon influences sequential mate choice in male Gammarus aequicauda (Amphipoda) Andrew H. Dittman, Gayle S. Brown, and Chris J. Foote The role of chemoreception in salmon-egg predation by coastrange (Cottus aleuticus) and slimy (C. cognatus) sculpins in Iliamna Lake, Alaska F.H. Bronson Do small voles require less food than large voles? David L. Strayer, Lane C. Smith, and Dean C. Hunter Effects of the zebra mussel (Dreissena polymorpha) in- vasion on the macrobenthos of the freshwater tidal Hudson River Michael E. Nelson Development of migratory behavior in northern white-tailed deer Michael A. Patten and Jutta C. Burger Spruce budworm outbreaks and the incidence of vagrancy in eastern North American wood-warblers X. Zhu, K.P. Pruess, and T.O. Powers Mitochondrial DNA polymorphism in a black fly, Simulium vittatum (Diptera: Simuliidae) Arild Landa, Olav Strand, John D.C. Linnell, and Terje Skogland Home-range sizes and altitude selection for arctic foxes and wolverines in an alpine environment Nicola Koper and Ronald J. Brooks Population-size estimators and unequal catchability in painted turtles B.D. Walters, P.J. Albert, and R.Y. Zacharuk Morphology and ultrastructure of sensilla on the proboscis of the adult spruce budworm, Choristoneura fumiferana (Clem.) (Lepidoptera: Tortricidae) Anthony J. Gaston and Mark Hipfner The effect of ice conditions in northern Hudson Bay on breeding by Thick-billed Murres (Uria lomvia) T. Rigaud and P. Juchault Sterile intersexuality in an isopod induced by the interaction between a bacterium (Wolbachia) and the environment Andy J. Green Comparative feeding behaviour and niche organization in a Mediterranean duck community Jeffrey E. Moore and Paul V. Switzer Preroosting aggregations in the American crow, Corvus brachyrhyncos D.J. McCafferty, I.L. Boyd, and R.I. Taylor Diving behaviour of Antarctic fur seal (Arctocephalus gazella) pups A.S. Frankel and C.W. Clark Results of low-frequency playback of M-sequence noise to humpback whales, Megaptera novaeangliae, in Hawai‘ R.B. Blaylock, J.C. Holmes, and L. Margolis The parasites of Pacific halibut (Hippoglossus stenolepis) in the eastern North Pacific: host-level influences C-4 Stephen J. Mullin, Robert J. Cooper, and William H.N. Gutzke The foraging ecology of the gray rat snake (Elaphe obsoleta spiloides). 11. Searching for different prey types in structurally varied habitats Lluis Brotons, Marc Magrans, Lluis Ferris, and Jacint Nadal Direct and indirect effects of pollution on the foraging behaviour of forest passerines during the breeding season Michael I. Saaristo and Seppo Koponen A review of northern Canadian spiders of the genus Agyneta (Araneae, Linyphiidae), with descriptions of two new species NOTES Stephanie M. Myers Unice, David W. Hale, and Ira F. Greenbaum _ Karyotypic variation in populations of deer mice (Peromyscus maniculatus) from eastern Canada and the northeastern United States Margaret P.M. Burton and Shawn R. Flynn Differential postspawning mortality among male and female capelin (Mallotus villosus Miller) in captivity Anne H. Hubbs and Rudy Boonstra_ Effects of food and predators on the home-range sizes of Arctic ground squirrels (Spermophilus parryii) Kristine B. Sillett and Richard S. Stemberger Masculinized females in a population of Leptodiaptomus minutus (Copepoda, Calanoida) April / avril ARTICLES Khadra Benhalima, Mikio Moriyasu, Elmer Wade, and Marcel Hébert Exoskeletal lesions in the male snow crab Chionoecetes opilio (Brachyura: Majidae) in the southern Gulf of St. Lawrence Khadra Benhalima, Mikio Moriyasu, and Marcel Hébert A technique for identifying the early-premolt stage in the male snow crab Chionoecetes opilio (Brachyura: Majidae) in Baie des Chaleurs, southern Gulf of St. Lawrence Trevor E. Pitcher and Bridget J.M. Stutchbury Latitudinal variation in testis size in six species of North American songbirds Laurel S. Duquette and John S. Millar Litter sex ratios in a food-supplemented population of Peromyscus mexicanus Michael A. Menzel, Timothy C. Carter, Brian R. Chapman, and Joshua Laerm Quantitative comparison of tree roosts used by red bats (Lasiurus borealis) and Seminole bats (L. seminolus) Jean-Francois Rail and Gilles Chapdelaine Food of Double-crested Cormorants, Phalacrocorax auritus, in the Gulf and Estuary of the St. Lawrence River, Quebec, Canada R.O. Brinkhurst On the genus Eclipidrilus Eisen, 1881 (Lumbriculidae, Clitellata), including a description of Eclipidrilus ithys sp.nov. Christine E. Gee, Kelly L. Shoemaker, and R. Meldrum Robertson The forewing tegulae: their significance in steering manoeuvres and free flight in Locusta migratoria Maria A. Eifler and Norman A. Slade Activity patterns in relation to body mass and ambient temperature among overwintering cotton rats (Sigmodon hispidus) Pilar Lépez, Alfredo Salvador, and José Martin Soil temperature, rock selection, and the thermal ecology of the amphisbaenian reptile Blanus cinereus Christophe Garenc, Frederick G. Silversides, and Helga Guderley Burst swimming and its enzymatic correlates in the threespine stickleback (Gasterosteus aculeatus): full-sib heritabilities Gregory R. Pohl A morphological and genetic comparison of Patrobus fossifrons (Eschscholtz) and Patrobus stygicus Chaudoir (Coleoptera: Carabidae) Sean G. Forrester and Murray W. Lankester Over-winter survival of first-stage larvae of Parelaphostrongylus tenuis (Nematoda: Protostrongylidae) Michael L. Phillips and Zuleyma Tang-Martinez Parent—offspring discrimination in the prairie vole and the effects of odors and diet Contents / Sommaire C-5 Thomas R. Stephenson, Kris J. Hundertmark, Charles C. Schwartz, and Victor Van Ballenberghe Predicting body fat and body mass in moose with ultrasonography Y. Kaska, R. Downie, R. Tippett, and R.W. Furness Natural temperature regimes for loggerhead and green turtle nests in the eastern Mediterranean E.L. West and T.M. Laverty Effect of floral symmetry on flower choice and foraging behaviour of bumble bees Michael S. Mooring and W.M. Samuel Tick-removal grooming by elk (Cervus elaphus): testing the principles of the programmed-grooming hypothesis Kare Elgmork and Gunnar Halvorsen Intraspecific morphological variation in a freshwater copepod (Crustacea) in relation to geographic distribution and environment NOTES Edda Johannesen and Harry P. Andreassen Survival and reproduction of resident and immigrant female root voles (Microtus oeconomus) Daniel K. Riskin and Margo J. Pybus The use of exposed diurnal roosts in Alberta by the little brown bat, Myotis lucifugus Sean P. Basquill and James W.A. Grant An increase in habitat complexity reduces aggression and monopolization of food by zebra fish (Danio rerio) May / mai ARTICLES Jacqueline D. Litzgus and Ronald J. Brooks Growth in a cold environment: body size and sexual maturity in a northern population of spotted turtles, Clemmys guttata Joseph L. Bonneau and Dennis L. Scarnecchia Seasonal and diel changes in habitat use by juvenile bull trout (Salvelinus confluentus) and cutthroat trout (Oncorhynchus clarki) in a mountain stream Elizabeth A. Gillis and Vilis O. Nams_ How red-backed voles find habitat patches Benedikt R. Schmidt, Hansjiirg Hotz, Bradley R. Anholt, Gaston-Denis Guex, and Raymond D. Semlitsch Factors contributing to the maintenance of the genetic polymorphism at the locus LDH-B in the pool frog, Rana lessonae Stéphane Masson and Bernadette Pinel-Alloul Spatial distribution of zooplankton biomass size fractions in a bog lake: abiotic and (or) biotic regulation? A.M.R. Bennett and G.G.E. Scudder Differences in attachment of water mites on water boatmen: further evidence of differential parasitism and possible exclusion of a host from part of its potential range Don White, Jr., Katherine C. Kendall, and Harold D. Picton Seasonal occurrence, body composition, and migration potential of army cutworm moths in northwest Montana Alexander I. Boltnev, Anne E. York, and George A. Antonelis Northern fur seal young: interrelationships among birth size, growth, and survival Dennis M. Mullen and Thomas M. Burton Experimental tests of intraspecific competition in stream riffles between juvenile and adult longnose dace (Rhinichthys cataractae) Bruce R. Mate, Robert Gisiner, and Joseph Mobley Local and migratory movements of Hawaiian humpback whales tracked by satellite telemetry G.C. Sutter and R.M. Brigham Avifaunal and habitat changes resulting from conversion of native prairie to crested wheat grass: patterns at songbird community and species levels Michael Riffel and Arnd Schreiber Morphometric differentiation in populations of the Central European sculpin Cottus gobio L., a fish with deeply divergent genetic lineages Andrew W. Trites and Daniel Pauly Estimating mean body masses of marine mammals from maximum body lengths Michael S. Rodway Habitat use by Harlequin Ducks breeding in Hebron Fiord, Labrador C-6 Michael S. Rodway Activity patterns, diet, and feeding efficiency of Harlequin Ducks breeding in northern Labrador Heidi M. Regehr, Michael S. Rodway, and William A. Montevecchi Antipredator benefits of nest-site selection in Black-legged Kittiwakes G.A. Lozano and R.E. Lemon Parental-care responses by yellow warblers (Dendroica petechia) to simultaneous manipulations of food abundance and brood size Robert Poulin Host and environmental correlates of body size in ticks (Acari: Argasidae and Ixodidae) F. Thomas, D.F. Ward, and R. Poulin Fluctuating asymmetry in an ornamental trait in the cave weta, Pleioplectron simplex Hutton (Orthoptera: Rhaphidophoridae): no role for parasites A Santiago Merino and Jaime Potti Growth, nutrition, and blow fly parasitism in nestling Pied Flycatchers Janice Blackbourn, Susan M. Bower, and Gary R. Meyer Perkinsus qugwadi sp.nov. (incertae sedis), a patho- genic protozoan parasite of Japanese scallops, Patinopecten yessoensis, cultured in British Columbia, Canada aoO>OCw Susan M. Bower, Janice Blackbourn, and Gary R. Meyer Distribution, prevalence, and pathogenicity of the protozoan Perkinsus qugwadi in Japanese scallops, Patinopecten yessoensis, cultured in British Columbia, Canada William F. Durham and Michael G. Tannenbaum Effects of endophyte consumption on food intake, growth, and reproduction in prairie voles Pal Arne Bjgrn and Bengt Finstad The development of salmon lice (Lepeophtheirus salmonis) on artificially infected post smolts of sea trout (Salmo trutta) e|ea eene ? e Hugo Ochoa-Acufia, John M. Francis, and Daryl J. Boness_ Interannual variation in birth mass and postnatal growth rate of Juan Fernandez fur seals NOTE Pekka T. Rintamaki, Mikko Ojanen, Heikki Pakkala, and Matti Tynjala Blood parasites of migrating Willow Warblers (Phylloscopus trochilus) at a stopover site June / juin ARTICLES André Desrochers, Line Rochefort, and Jean-Pierre L. Savard Avian recolonization of eastern Canadian bogs after peat mining R.O. Polziehn, J. Hamr, F.F. Mallory, and C. Strobeck Phylogenetic status of North American wapiti (Cervus elaphus) subspecies Emilio A. Cittadino, Maria Busch, and Fernando O. Kravetz Population abundance and dispersal in Akodon azarae (pampean grassland mouse) in Argentina Rod Kennett, Keith Christian, and Gavin Bedford Underwater nesting by the Australian freshwater turtle Chelodina rugosa: effect of prolonged immersion and eggshell thickness on incubation period, egg survivorship, and hatchling size André Dumont, Jean-Pierre Ouellet, Michel Créte et Jean Huot Caractéristiques des peupiemients forestiers recherchés par le cerf de Virginie en hiver a la limite nord de son aire de répartition Eric M. Gese and Robert L. Ruff Howling by coyotes (Canis latrans): variation among social classes, seasons, and pack sizes Paul M. Thompson, Ann Mackay, Dominic J. Tollit, Simon Enderby, and Philip S. Hammond The influence of body size and sex on the characteristics of harbour seal foraging trips David A. Methven and Colin McGowan Distinguishing small juvenile Atlantic cod (Gadus morhua) from Green- land cod (Gadus ogac) by comparing meristic characters and discriminant function analyses of morphometric data Douglas R. Warrick The turning- and linear-maneuvering performance of birds: the cost of efficiency for coursing insectivores A.T. Read and C.K. Govind Cell types in regenerating claws of the snapping shrimp, Alpheus heterochelis P.J. Pekins, K.S. Smith, and W.W. Mautz The energy cost of gestation in white-tailed deer Contents / Sommaire C-7 R.E. McRoberts, R.T. Brooks, and L.L. Rogers Using nonlinear mixed effects models to estimate size—age relation- ships for black bears Vadim E. Panov and Donald J. McQueen Effects of temperature on individual growth rate and body size of a freshwater amphipod René van der Wal and Maarten J.J.E. Loonen Goose droppings as food for reindeer Steven L. Chown, Pierre Pistorius, and Clarke H. Scholtz Morphological correlates of flightlessness in southern African Scarabaeinae (Coleoptera: Scarabaeidae): testing a condition of the water-conservation hypothesis | Ian D. Hogg, Céline Larose, Yves de Lafontaine, and Kenneth G. Doe Genetic evidence for a Hyalella species complex within the Great Lakes — St. Lawrence River drainage basin: implications for ecotoxicology and conservation | biology M.L. Weber and J.M. Thompson Seasonal patterns in food intake, live mass, and body composition of mature female fallow deer (Dama dama) Seth P.D. Riley, John Hadidian, and David A. Manski Population density, survival, and rabies in raccoons in an urban national park Luc Bélanger, Austin Reed, and Jean-Luc DesGranges Reproductive variables of American black ducks along the St. Lawrence estuary, 1963-1991 M.B. Fenton, C.V. Portfors, I.L. Rautenbach, and J.M. Waterman Compromises: sound frequencies used in echo- location by aerial-feeding bats NOTES Scott D. Stevens High incidence of infanticide by lactating females in a population of Columbian ground squirrels (Spermophilus columbianus) Christien Meier, Gary D. Partlow, Kenneth R.S. Fisher, and Bryan Rennie Persistent paramesonephric ducts (masculine uterus) in the male North American beaver (Castor canadensis) Jean-Francois Hamel and Annie Mercier Diet and feeding behaviour of the sea cucumber Cucumaria frondosa in the St. Lawrence estuary, eastern Canada S.R. Martorelli and F. Cremonte A proposed three-host life history of Monascus filiformis (Rudolphi, 1819) (Digenea: Fellodistomidae) in the southwest Atlantic Ocean Walter Stalker Greaves The relative positions of the jaw joint and the tooth row in mammals L.L. Eberhardt Erratum: Applying difference equations to wolf predation July / juillet ARTICLES Jacqueline Faulkner, Lena N. Measures, and Fred G. Whoriskey Stenurus minor (Metastrongyloidea: Pseudali- idae) infections of the cranial sinuses of the harbour porpoise, Phocoena phocoena Reidar Andersen and John D.C. Linnell Ecological correlates of mortality of roe deer fawns in a predator-free environment Réjean Hays, Lena N. Measures, and Jean Huot Euphausiids as intermediate hosts of Anisakis simplex in the St. Lawrence estuary Reinhart A. Brust, J. William O. Ballard, Felice Driver, Diana M. Hartley, Nora J. Galway, and John Curran Molecular systematics, morphological analysis, and hybrid crossing identify a third taxon, Aedes (Halaedes) wardangensis sp.nov., of the Aedes (Halaedes) australis species-group (Diptera: Culicicae) Francisco Javier Hernandez-Blazquez and José Roberto Machado Cunha da Silva Absorption of macromolecular proteins by the rectal epithelium of the Antarctic fish Notothenia neglecta Stephanie A. Smith, Janette Nason, and Roger P. Croll Distribution of catecholamines in the sea scallop, Placo- pecten magellanicus Kelly Lickman, Anne-Marie Murray, and William H. Cade Effect of mating on female phonotactic response in Gryllus integer (Orthoptera: Gryllidae) C-8 W. Trevor Claxton, Anthony B. Wilson, Gerry L. Mackie, and Elizabeth G. Boulding A genetic and morphological comparison of shallow- and deep-water populations of the introduced dreissenid bivalve Dreissena bugensis ag Russell Bonduriansky and Ronald J. Brooks Male antler flies (Protopiophila litigata; Diptera: Piophilidae) are more selective than females in mate choice yay Mauro DiGiancamillo, Giovanni Rattegni, Michela Podesta, Luigi Cagnolaro, Bruno Cozzi, and Leo Leonardi Postnatal ossification of the thoracic limb in striped dolphins (Stenella coeruleoalba) (Meyen, 1833) from the Mediterranean Sea E. Virgés and J.L. Telleria Roe deer habitat selection in Spain: constraints on the distribution of a species Roy G. Danzmann, Raymond P. Morgan II, Matthew W. Jones, Louis Bernatchez, and Peter E. Ihssen A boOo—eb >R major sextet of mitochondrial DNA phylogenetic assemblages extant in eastern North American brook trout (Salvelinus fontinalis): distribution and postglacial dispersal patterns Corey J.A. Bradshaw, Stan Boutin, and Daryll M. Hebert Energetic implications of disturbance caused by petroleum exploration to woodland caribou tfT=eeHm J.M. McLeese and J.G. Eales Factors influencing T; transport into red blood cells of rainbow trout, Oncorhynchus mykiss A. Fredric Karlsson and Eugene R. Potapov Consistency and change in bank vole (Clethrionomys glareolus) home ranges across a decade Vanessa A. Sorensen and Roger A. Powell Estimating survival rates of black bears Keith L. Jackson and Joseph S. Nelson Ambophthalmos, a new genus for “Neophrynichthys” angustus and “Neophrynichthys” magnicirrus, and the systematic interrelationships of the fathead sculpins (Cottoidei, Psychro- lutidae) R.J. Gegear and T.M. Laverty How many flower types can bumble bees work at the same time? @Oyvind Overli, Svante Winberg, Berge Damsgard, and Malcolm Jobling Food intake and spontaneous swimming activity in Arctic char (Salvelinus alpinus): role of brain serotonergic activity and social interactions W. Dean Morewood and Richard A. Ring Revision of the life history of the High Arctic moth Gynaephora groenlandica (Wocke) (Lepidoptera: Lymantriidae) Claudio Carere and Enrico Alleva Sex differences in parental care in the common swift (Apus apus): effect of brood size and nestling age Daniel A. de Lamo, Allen F. Sanborn, Cynthia D. Carrasco, and Donald J. Scott Daily activity and behavioral thermoregulation of the guanaco (Lama guanicoe) in winter NOTES Sabra L. Klein and Randy J. Nelson Sex and species differences in cell-mediated immune responses in voles Keith W. Sockman and Hubert Schwabl Hypothermic tolerance in an embryonic American kestrel (Falco sparverius) August / Aoait ARTICLES Makoto Kato Morphological and ecological adaptations in montacutid bivalves endo- and ecto-symbiotic with holo- thurians Réjean Hays, Lena N. Measures, and Jean Huot Capelin (Mallotus villosus) and herring (Clupea harengus) as paratenic hosts of Anisakis simplex, a parasite of beluga (Delphinapterus leucas) in the St. Lawrence estuary Christophe Guinet, Jean Paul Roux, Marielle Bonnet, and Valérie Mison Effect of body size, body mass, and body condition on reproduction of female South African fur seals (Arctocephalus pusillus) in Namibia C. Nellemann and R.D. Cameron Cumulative impacts of an evolving oil-field complex on the distribution of calving caribou Jenny Christal, Hal Whitehead, and Erland Lettevall Sperm whale social units: variation and change ' Contents / Sommaire C-9 Gabe Gries and Francis Juanes Microhabitat use by juvenile Atlantic salmon (Salmo salar) sheltering during the day in summer Haruki Tatsuta and S. Akimoto Sexual differences in the pattern of spatial variation in the brachypterous grasshopper Podisma sapporensis (Orthoptera: Podisminae) John K.B. Ford, Graeme M. Ellis, Lance G. Barrett-Lennard, Alexandra B. Morton, Rod S. Palm, and Kenneth C. Balcomb III Dietary specialization in two sympatric populations of killer whales (Orcinus orca) in coastal British Columbia and adjacent waters Allen W. Shostak and Kerri A. Smyth Activity of flour beetles (Tribolium confusum) in the presence of feces from rats infected with rat tapeworm (Hymenolepis diminuta) Seiji Sasai, Toyoji Kaneko, Sanae Hasegawa, and Katsumi Tsukamoto Morphological alteration in two types of gill chloride cells in Japanese eels (Anguilla japonica) during catadromous migration K.E, Jain, I.K. Birtwell, and A.P. Farrell Repeat swimming performance of mature sockeye salmon following a brief recovery period: a proposed measure of fish health and water quality George R. Zug and Richard E. Glor Estimates of age and growth in a population of green sea turtles (Chelonia mydas) from the Indian River lagoon system, Florida: a skeletochronological analysis William E. Cooper, Jr. Reactive and anticipatory display to deflect predatory attack to an autotomous lizard tail Anita Schenk, Martyn E. Obbard, and Kit M. Kovacs Genetic relatedness and home-range overlap among female black bears (Ursus americanus) in northern Ontario, Canada D.A.S. Rosen and D. Renouf Correlates of seasonal changes in metabolism in Atlantic harbour seals (Phoca vitulina concolor) M.C.S. Kingsley and R.R. Reeves Aerial surveys of cetaceans in the Gulf of St. Lawrence in 1995 and 1996 A.T. Bergerud and J.P. Elliott Wolf predation in a multiple-ungulate system in northern British Columbia Todd R. Jackman Molecular and historical evidence for the introduction of clouded salamanders (genus Aneides) to Vancouver Island, British Columbia, Canada, from California Per R. Holmstad and Arne Skorping Covariation of parasite intensities in willow ptarmigan, Lagopus lagopus L. Guy Sainte-Marie and Bernard Sainte-Marie Morphology of the spermatheca, oviduct, intermediate chamber, and vagina of the adult snow crab (Chionoecetes opilio) NOTE David C. Lasenby and Geoff Veinott Ingestion of trace metals by the opossum shrimp, Mysis relicta, determined by laser ablation sampling — inductively coupled plasma mass spectrometry September / septembre ARTICLES Laurence Packer A phylogenetic analysis of western European species of the Lasioglossum leucozonium species-group (Hymenoptera: Halictidae): sociobiological and taxonomic implications Eduardo R. Secchi, John Y. Wang, Brent W. Murray, Claudia C. Rocha-Campos, and Bradley N. White Population differentiation in the franciscana (Pontoporia blainvillei) from two geographic locations in Brazil as determined from mitochondrial DNA control region sequences Declan W. Ali and D. Christopher Darling Neuroanatomy and neurochemistry: implications for the phylogeny of the lower Neoptera Shelley A. Adamo Feeding suppression in the tobacco hornworm, Manduca sexta: costs and benefits to the parasitic wasp Cotesia congregata B.J. Crawford and A.C. Martin Effect of microgravity on the development of embryos/larvae and the larval esophageal musculature of the purple starfish, Pisaster ochraceus Katsufumi Sato, Yoshimasa Matsuzawa, Hideji Tanaka, Takeharu Bando, Shingo Minamikawa, Wataru Sakamoto, and Yasuhiko Naito Internesting intervals for loggerhead turtles, Caretta caretta, and green turtles, Chelonia mydas, are affected by temperature C-10 Tarik Chekchak, Réhaume Courtois, Jean-Pierre Ouellet, Laurier Breton et Sylvain St-Onge Caractéristiques des sites de mise bas de l’orignal (Alces alces) Laurie J. Vitt, Peter A. Zani, Teresa Cristina S. Avila-Pires, and Maria Cristina Espésito Geographical ecology of the gymnophthalmid lizard Neusticurus ecpleopus in the Amazon rain forest Laurie J. Vitt, Shawn S. Sartorius, Teresa Cristina S. Avila-Pires, and Maria Cristina Espésito Use of time, space, and food by the gymnophthalmid lizard Prionodactylus eigenmanni from the western Amazon of Brazil Marisa Esteban, Jacques Castanet, and Borja Sanchiz Inferring age and growth from remains of fossil and predated Recent anurans: a test case using skeletochronology Astrid Vargas and Stanley H. Anderson Ontogeny of black-footed ferret predatory behavior towards prairie dogs Christine Noronha and Conrad Cloutier Effect of soil conditions and body size on digging by prediapause Colorado potato beetles (Coleoptera: Chrysomelidae) Daniel R. Kozlovic Parasitism by Brown-headed Cowbirds and productivity of House Finch hosts L.A. Shipley, S. Blomquist, and K. Danell Diet choices made by free-ranging moose in northern Sweden in relation to plant distribution, chemistry, and morphology James F. Staples and Peter W. Hochachka The effect of hibernation status and cold-acclimation on hepatocyte gluconeogenesis in the golden-mantled ground squirrel (Spermophilus lateralis) Andreas Wohlitmann Water vapour uptake and drought resistance in immobile instars of Parasitengona (Acari: Prostigmata) G. Melone, C. Ricci, and H. Segers The trophi of Bdelloidea (Rotifera): a comparative study across the class Richard D. Duncan and Stephen H. Jenkins Use of visual cues in foraging by a diurnal herbivore, Belding’s ground squirrel John R. Demboski, Brandy K. Jacobsen, and Joseph A. Cook Implications of cytochrome b sequence variation for biogeography and conservation of the northern flying squirrels (Glaucomys sabrinus) of the Alexander Archipelago, Alaska Errin E. Rathgeber and Benjamin W.C. Rosser Increase in oxidative capacity of pigeon pectoralis muscle before and after fledging NOTES I. Corbin, J. Payette, B.J. Blackburn, and M. Novak Excretion of citrate by metacestodes of Mesocestoides vogae Jan Ove Bustnes Selection of blue mussels, Mytilus edulis, by common eiders, Somateria mollissima, by size in relation to shell content Zbigniew Borowski Influence of predator odour on the feeding behaviour of the root vole (Microtus oeconomus Pallas, 1776) Steven R. Scadding and Andrew Burns Symmetrical vascularization patterns in normal and retinoic acid treated limb regenerates of the axolotl, Ambystoma mexicanum Kristiina Ovaska, Theodore M. Davis, and Iiigo Novales Flamarique Erratum: Hatching success and _ larval survival of the frogs Hyla regilla and Rana aurora under ambient and artificially enhanced solar ultraviolet radiation October / Octobre ARTICLES Zbigniew Borowski Influence of weasel (Mustela nivalis Linnaeus, 1766) odour on spatial behaviour of root voles (Microtus oeconomus Pallas, 1776) Dave Shutler, Mark L. Gloutney, and Robert G. Clark Body mass, energetic constraints, and duck nesting ecol- ogy W.J. Loughry, Paulo A. Prodéhl, Colleen M. McDonough, W.S. Nelson, and John C. Avise Correlates of reproduc- tive success in a population of nine-banded armadillos