Pacific Science Volume 50, Number 4, 1996

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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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    50: Index - Pacific Science
    (University of Hawaii Press, 1996)
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    Two New Soles of the Genus Aseraggodes (Pleuronectiformes: Soleidae) from the Hawaiian Islands
    (University of Hawaii Press, 1996-10) Randall, John E.
    A brief review is given of the literature of the soleid genus Aseraggodes, restricted to the Indo-Pacific region except for one species in the Galapagos Islands. Aseraggodes ocellatus, described from Sri Lanka by Weed (1961), is synonymized with Pardachirus pavoninus (Lacepede). Aseraggodes is represented in the Hawaiian Islands by two shallow-water endemic species: A. borehami Randall, n. sp., is distinct in its combination of having 71-75 dorsal rays; 49-52 anal rays; 66-70 lateral-line scales; a moderately elongate body (depth 2.55-2.8 in SL); front of upper lip not overlapping lower lip when mouth closed; caudal peduncle present but short; moderately large size (largest of 10 specimens, 102.8 mm SL); and an ocular-side color pattern of light brown with numerous irregular white spots, some scales variously edged in dark brown. Aseraggodes therese Randall, n. sp., has 72-79 dorsal rays; 5461 anal rays; 60-66 lateral-line scales; body depth 2.25 to 2.75 in SL; front of upper lip overlapping lower lip when mouth closed; no caudal peduncle; small size (largest of 27 specimens, 66 mm SL); and an ocular-side color pattern dominated by irregular dark brown blotches of variable size, the largest in three longitudinal series.
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    Spatial and Temporal Distribution of Zooplankton Biomass in the Gulf of Tehuantepec, Mexico
    (University of Hawaii Press, 1996-10) Ayala-Duval, E. ; Maldonado-Monroy, M del C. ; Becerril-Martinez, J.A. ; Ayala-Fernandez, X.M. ; Barrios-Orozco, V. ; Garcia-Tamayo, D.T. ; Juarez-Ortiz, C.
    Spatial and temporal zooplankton biomass distribution obtained during three oceanographic cruises in the Gulf of Tehuantepec, Mexico, located between 14°30'-16°12' N and 92°00'-96°30' W, in the eastern tropical Pacific Ocean in January, May, and November, 1989, is presented. Samples were obtained by double-oblique hauls with a 333-505 um bongo net. The study was done with samples from the 333-J-Lm net, extrapolating the values to g/100 m3 of wet weight. In January, values between 78 and 3,340 g/100 m3 were found; results in May were between 143 and 6,920 g/100 m3; and in November, between 27 and 2,290 g/100 m3 . We consider that the distributions obtained in January and in November were induced by upwelling and the contribution of the coastal lagoons. In May, zooplanktonic biomass was determined by the prevailing currents that ascend over the Chiapas continental slope.
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    Hermatypic Coral Fauna of Subtropical Southeast Africa: A Checklist
    (University of Hawaii Press, 1996-10) Riegl, Bernhard
    The South African hermatypic coral fauna consists of 96 species in 42 scleractinian genera, one stoloniferous octocoral genus (Tubipora), and one hermatypic hydrocoral genus (Millepora). There are more species in southern Mozambique, with 151 species in 49 scleractinian genera, one stoloniferous octocoral (Tubipora musica L.), and one hydrocoral (Millepora exaesa [Forskal)). The eastern African coral faunas of Somalia, Kenya, Tanzania, Mozambique, and South Africa are compared and Southeast Africa distinguished as a biogeographic subregion, with six endemic species. Patterns of attenuation and species composition are described and compared with those on the eastern boundaries of the Indo-Pacific in the Pacific Ocean.
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    Effect of Exploitation on the Limpet Lottia gigantea: A Field Study in Baja California (Mexico) and California (U.S.A.)
    (University of Hawaii Press, 1996-10) Pombo, Oscar Alberto ; Escofet, Anamaria
    Specimens of Lottia gigantea (Sowerby) from intertidal populations, artisanal catches, and shell middens were obtained from 1985 to 1988 at 11 sites along the Pacific coasts of Baja California (Mexico) and California (U.S.A.). A scaled rating system of 0-4 was used to describe the amount of intertidal exploitation associated with visiting patterns of gatherers, accessibility, and site topography. Maximum and mean size of intertidal populations and artisanal catches decreased along a gradient of increasing exploitation. Mean size was significantly different between catches and the corresponding intertidal population. Mean size of specimens in older middens was significantly larger than in a recent midden. Measurements at the most inaccessible site inmediately after the exceptional extratropical winter storm that swept the California coast on 17-18 January 1988 showed that the storm had removed larger specimens approximating exploitation measuring 1-2 on our scale. Intertidal gathering occurs or has occurred unless it is physically prevented by topography, distance, or some kind of restriction of access. Ecological implications of exploitation were explored utilizing the conceptual model proposed by Catterall and Poiner for assessing potential impact of traditional shell gathering on intertidal molluscs. The model suggests that size at maturity of this species and its pelagic larval stage may prevent depletion by harvesting.
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