منابع مشابه
Coral Reefs of Tutuila, with Reference to the Murray-Agassiz Solution Theory.
assortive mating in Chromodoris. If the population is composed of a mixture of pure lines, then one effect of this type of copulation may well be, as in Paramecium (Jennings), the prevention of interlinear crossing. Certain generally accepted ideas regarding the life history of nudibranchs may tend to favor this view. The evidence for the presence of pure lines in the Chromodoris stock is, howe...
متن کاملMercury (Hg) speciation in coral reef systems of remote Oceania: Implications for the artisanal fisheries of Tutuila, Samoa Islands.
We investigated Hg in muscle tissue of fish species from three trophic levels on fringing reefs of Tutuila (14°S, 171°W), plus water, sediment and turf alga. Accumulation of total Hg in the herbivore Acanthurus lineatus (Acanthuridae, lined surgeonfish, (n=40)) was negligible at 1.05 (±0.04) ng g(-1) wet-weight, (∼65% occurring as methyl Hg). The mid-level carnivore Parupeneus spp. (Mullidae, g...
متن کاملCoral and crustose coralline algae disease on the reefs of American Samoa
Surveys for lesions in corals were conducted at seven sites around Tutuila in June 2004 and January 2005. The objectives of the study were to document the distribution and prevalence of disease in the major genera of corals and crustose coralline algae, systematically describe gross and microscopic morphology of lesions in reef corals and determine whether there are seasonal differences in prev...
متن کاملCoral reefs
facilitation during action observation in individuals with autism spectrum disorder. Curr. Biol. 15, R84–R85. 2 . Nishitani, N., Avikainen, S., and Hari, R. (2004). Abnormal imitation-related cortical activation sequences in Asperger’s syndrome. Ann. Neurol. 55, 558–5 2. 22. Dapretto, M., Davies, M.S., Pfeifer, J.H., Scott, A.A., Sigman, M., Bookheimer, S.Y., and Iacoboni, M. (200 ). Understand...
متن کاملThe future of coral reefs.
Coral reefs, with their millions of species, have changed profoundly because of the effects of people, and will continue to do so for the foreseeable future. Reefs are subject to many of the same processes that affect other human-dominated ecosystems, but some special features merit emphasis: (i) Many dominant reef builders spawn eggs and sperm into the water column, where fertilization occurs....
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ژورنال
عنوان ژورنال: Science
سال: 1921
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.53.1382.559