Salpids (Tunicata, Thaliacea) from the Gulf of Mexico and Caribbean Sea

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