Pacific Science Volume 29, Number 4, 1975

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Pacific Science is a quarterly publication devoted to the biological and physical sciences of the Pacific Region.


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    29: Index - Pacific Science
    (University of Hawaii Press, 1975)
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    Esterase Isozyme Patterns of Some Tropical and Subtropical Herbaceous Legumes
    (University of Hawaii Press, 1975-10) Chow, K.H. ; Crowder, L.V.
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    The Eel Genus Phaenomonas (Pisces, Ophichthidae)
    (University of Hawaii Press, 1975-10) McCosker, John E.
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    Paralytic Shellfish Poison in Various Bivalves, Port Moresby, 1973
    (University of Hawaii Press, 1973-10) Maclean, J.L.
    Toxicity studies of various bivalves at Port Moresby were carried out by mouse bioassay. Crassostrea echinata was found to lose paralytic shellfish poison after 3 weeks in a closed seawater system, although toxin is retained for a much longer period in vivo. Four bivalve species tested were as toxic at 10 meters depth as they were at 2 meters. Toxin was not distributed evenly through the tissues of bivalves investigated.
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    Aspects of Life History and of Territorial Behavior in Young Individuals of Platynereis bicanaliculata and Nereis vexillosa (Annelida, Polychaeta)
    (University of Hawaii Press, 1975-10) Roe, Pamela
    Plarynereis bicanaliculata (Baird), an annual nereid, spawned in early August at two areas in Washington state. Spawning was highly synchronous. Young were planktonic for about 1 week. Within 3 weeks they had grown to 4 mm in length, had started building tubes of mucus and diatoms, and showed a period of rapid growth in size. By the end of September or early October they averaged 10 mm in length, at which size they remained until March. In spring they reached adult length (20-23 mm) and during the summer gametes developed. Nereis vexillosa Grube egg masses were found from March through August. Nereis has a 2-year life span in both study areas, growing to one-half adult size the 1st year and to mature size the 2nd year. In the laboratory, young made tubes within 1 week after hatching from egg masses. Members of both species defend their tubes from intruders. Usually, larger individuals win fighting encounters, especially if they are the occupants of tubes. Small individuals successfully defend their tubes from larger individuals in about onehalf of the encounters; and if fights occur between equal sized individuals, occupants are usually not displaced. Fights are real, with jaws used much for biting, and smaller individuals are sometimes actually eaten by larger ones, especially In Nereis vexillosa. In the laboratory the number of individuals of N. vexillosa kept in fingerbowls decreased in number until only one or two large individuals remained.
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    Hawaiian Polyclad Flatworms: Prosthiostomids
    (University of Hawaii Press, 1975-10) Poulter, J.L.
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    Lapita Pottery and a Lower Sea Level in Western Samoa
    (University of Hawaii Press, 1975-10) Green, R.C. ; Richards, Horace G.
    Radiocarbon dates are presented supporting previous estimates of a 2800- to 3000-year B.P. age for a collection of Lapita pottery sherds recovered by dredging a now-submerged coastal settlement on the island of Upolu in Western Samoa. New data describing a much enlarged collection are discussed in relation to previously reported materials, and the question of possible changes of sea level as the mechanism for submergence is evaluated.
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    29:4 Table of Contents - Pacific Science
    (University of Hawaii Press, 1975-10)
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