A flume study of drift in marine infaunal amphipods (Haustoriidae)

0LR(1980)27(12)

E. BiologicalOceanography

Systematics and distribution of 16 sipunculan species are presented; Phascolion canum, n.sp., is described. The collections come from six stations (1845-4825 m); six species are found only in the northern area b u t no strong n o r t h / s o u t h zoogeographical barrier is apparent and numerical analysis indicates a close faunal relationship among vertically similar stations within the gulf. Both density and diversity seem to decrease with depth. Utica College of Syracuse University, Utica, N.Y. 13502, U.S.A.

80:6022 de Ladurantaye, Rejean and Guy Lacroix, 1980. Repartition spatiale, cycle saisonnier et croissance de Mysis litoralis (Banner, 1948) (Mysidacea) dans un fjord subarctique. [Spatial distribution, seasonal cycle and growth of Mysis litoralis (Banner, 1948) in a subarctic fjord; Mysidacea.] Can. J. Zool., 58(5): 693-700. This 'isolated and practically unknown population' of M. litoralis in the Saguenay Fjord was monitored from April-October. In May the population becomes restricted to the lower fjord, inhabiting deeper (100-200 m), cold (<5°C) waters through June. From July-October, all ages are found primarily in warmer, shallower (up to 5 m) waters. Sexual maturity is attained by October, reproduction occurs in late October or early November, and the young emerge from the brood pouch in April-May. Departement de biologie, Universite Laval, Ste-Foy (Que.), Canada G1K 7P4. (sir)

80:6023 Ennis, G. P., 1980. Size-maturity relationships and related observations in Newfoundland populations of the lobster ( H o m a r u s americanus). Can. J. Fish. aquat. Sci., 37(6): 945-956. Ogives of maturity for female lobsters indicated 50% maturity at a carapace length ranging from 71-76 ram. Distinct inflections in the abdomen width/carapace length ratio vs. carapace length relationships in the female and crusher claw weight/whole weight ratio vs. carapace length relationships in the male were used to determine onset of maturity. Ovigerous females ranged from 2.6-30.4% of the total number of females with carapace longer than 71-76 m m (percentage and length depending on area and year). At commercial sizes (> 81 mm carapace), trap-caught males greatly outnumbered females; divers caught both sexes equally. Some molting, spawning and fertilization relationships are discussed. Research and Resource Services, Department of Fisheries and

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Oceans, P.O. Box 5667, St. John's, Newfoundland AIC 5XI, Canada. (slr) 80:6024

Esnal, G. B., 1978. Los salpidos (Tunicata, Thaliacea) del golfo de Mexico y mar Caribe. [Salpids (Tunicata, Thaliacea) from the Gulf of Mexico and Caribbean Sea.] Physis, B. Aires, (A)38(94): 59-66. Five new records for the area were among the 14 species identified. Most abundant was Thalia c~car, followed by Weelia cylindrica, T. democratica and Salpa fusiformis; occurrence was correlated with areas of high primary productivity. Departamento de Ciencias Biologicas, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina. (slr) 80:6025

Esnal, G. B., 1978. Caracteristicas generales de la distribucion de tunicados pelagicos del Atlantico Sudoccidental, con algunas observaciones morfologicas. [General characteristics of the distributional pattern of pelagic tunicates from the southwest Atlantic, with some morphological considerations.] Physis, B. Aires, (A)38(94): 91-102. Ten appendicularian, 2 doliolid and 11 salpid species (Thalia cicar, a new area record, among them) were isolated from 76 plankton samples. General latitudinal distributions of appendicularians and salpids are presented, and some morphological observations (particularly on Oikopleura longicauda and Thalia democratica ) are made. Includes a species list and 2 drawings. Departamento de Ciencias Biologica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina. (slr)

80:6026 Frame, A. B., 1980. Two new species of sand burrowing amphipod crustaceans from Long Island Sound and the New York Bight (Amphipoda: Haustoriidae). [Acanthohaustorius bousfieldi n.sp. and A. similis n.sp.]. Estuaries, 3(2): 75-83. Includes ca. 30 drawings. U.S. Department of Commerce, NOAA, Sandy Hook Laboratory, Highlands, N.J. 07732, U.S.A. 80:6027 Grant, J., 1980. A flume study of drift in marine infaunal amphipods (Haustoriidae). Mar. Biol., 56(1): 79-84. Less than 10% of amphipods present in the sediments were transported, and were mostly

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E. Biological Oceanography

adults occurring in a 1 : 1 sex ratio. Drift was density independent and was greatest at night and during high current flow. Current-induced displacement may produce the patchiness in distribution observed in nature, and could keep densities below the carrying capacity of local environments. Belle W. Baruch Institute for Marine Biology and Coastal Research, University of South Carolina, Columbia, S.C. 29208, U.S.A. (mjj) 80:6028 Hart, J. F. L., 1980. New records and extensions of range of [13 species of] reptant decapod Crustacea from the northeastern Pacific Ocean. Can. J. Zool., 58(5): 767-769. Aquatic Zoology Division, British Columbia Provincial Museum, Victoria, B.C., Canada V8W lX4. 80:6029 Hayward, B. W. and R. C. Brazier, 1980. Taxonomy and distribution of present-day Bolivinella, J. foram. Res., 10(2): 102-116. Over 300 specimens from most recorded localities were examined in an attempt to revise the chaotic taxonomy of recent Bolivinella species; distribution and fossil history are considered. The five present-day species are described physically and geographically; a new family, Bolivinellidae, is proposed, characterized by 'biserial test, cribrate aperture obscured by radially arranged postules, plastogamic reproduction and lack of a tooth plate or internal tube.' Includes 41 micrograpbs and 10 drawings. New Zealand Geological Survey, P.O. Box 30-368, Lower Hurt, New Zealand. (sir) 80:6030 Hooper, Kenneth, 1978. Distribution of Foraminiferida south of Sherbrooke, Nova Scotia. Marit. Sed., 14(3): 83-94. Factor-vector analysis of Habbishaw's (1970) Foraminiferida identification ('total' population, not biocenoses) revealed 4 benthonic assemblages. The Miliammina fusca-dominated assemblage inhabited intertidal areas of low diversity (4.75), low salinity and pH. EggereUa advena dominated a moderately diverse (12.5), high-pH assemblage on very fine-grained substrates. Elphidiurn clavatum prevailed in the moderately diverse (14.3) assemblage preferring a sand bottom (mean pH 7.2). The final, highly diverse (19.9) assemblage occurred on sand at a mean pH of 7.16 and was dominated by Cibicides lobatulus, EggereUa advena and Elphidium clavatum. Department of Geology, Carieton University, Ottawa, Canada. (sir)

OLR(1980)27(12)

80:6031 King, K. R., J. T. Hollibaugh and F. Azam, 1980. Predator-prey interactions between the larvacean Oikopleura dioica and bacterioplankton in enclosed w a t e r columns. Mar. Biol., 56(1): 49-57. Larvaceans, having mucous filters, are able to capture particles as small as free-living bacteria. Natural bacterioplankton asemblages were 3Hlabeled and fed to O. dioica, grazing rates ranged from < 1 to > 100 mL per day per individual. When these rates were used in a model of the trophic d y n a m i c s of e s t i m a t e d p o p u l a t i o n s of b a c t e r i o p l a n k t o n , larvaceans, ciliates and nudibranch veligers, it was apparent that O. dioica had little effect on the population dynamics of bacterioplankton, even though they consumed a substantial amount. University of Washington, Department of Oceanography, Seattle, Wash. 98195, U.S.A. (slr) 80:6032 King, P. E., M. S. AI-Khalifa and M. R. Fordy, 1980. Environmental adaptations of Aepopsis robinii (Laboulbene), an intertidal carabid of rocky shores. J. nat. Hist., 14(3): 309-317. This paper examines the biology of a coleopteran inhabiting (throughout the entire life cycle) the intertidal zone from Britain to Morocco; part of its life is spent actually immersed in seawater. Includes 9 micrographs. Department of Zoology, University College, Singleton Park, Swansea, W. Glamorgan, U.K. (slr) 80:6033 Ledoyer, Michel, 1979. Les gammariens de la pente e x t e r n e du G r a n d R e c i f de T u l e a r (Madagascar); (Crustacea, Amphipoda). [Gammaridea of the outer slope of T u l e a r ' s Grand Recif coral reef (Madagascar): 151 species including 40 n.spp, and 4 n.sspp.; Crustacea, Amphipoda.] Memorie Mus. civ. Stor. nat. Verona, (Ser. 2)(2): 150 pp. Includes ca. 1000 drawings and ca. 120 references. Station m a r i n e d ' E n d o u m e et C e n t r e d'Oceanographie, Marseille, France. 80:6034 Lobao, V o L. and Paulo Sawaya, 1978. Resistencia de Macrobrachium holthuisi Genofre & Lobao, 1976 e Macrobrachium iheringi Ortmann, 1897 a variacao de salinidade em funcao dos estadios do ciclo de intermuda. [Resistance of Macrobrachium holthuisi Genofre & Lobao, 1976 and Macrobrachium iheringi Ortmann, 1897 to salinity variations relative to stadia