Marine Borers in Calcareous Terrigenous Rocks of the Pacific Coast
نویسندگان
چکیده
منابع مشابه
Chemical Study of Several Marine Mollusks of the Pacific Coast.*
The marine invertebrate forms of animal life have not often been the subject of chemical investigation. Lacking, as a class, the greater freedom of movement and the more highly organized nervous and circulatory systems which the possession of a bony skeleton allows, these forms, in general, are more sluggish in their metabolic activities, less responsive to chemical influences, and less attract...
متن کاملChemical Study of Several Marine Mollusks of the Pacific Coast.*
The marine invertebrate forms of animal life have not often been the subject of chemical investigation. Lacking, as a class, the greater freedom of movement and the more highly organized nervous and circulatory systems which the possession of a bony skeleton allows, these forms, in general, are more sluggish in their metabolic activities, less responsive to chemical influences, and less attract...
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One of the chemical breakdown products of nonylphenol ethoxylates, 4-nonylphenol (4-NP), accumulates in organisms and is of concern as an environmental pollutant due to its endocrine disrupting effects. We measured 4-NP levels in the seawater, sediment, and twelve organisms within the California estuary, Morro Bay, and examined biomagnification of 4-NP using stable isotope abundances (δ(15)N an...
متن کاملA survey of cytotoxic effects of some marine algae in the Chabahar coast of Oman Sea
Iran has 1260 km of coastline that borders the Persian Gulf and the Oman Sea in the northwest Indian Ocean. Marine algae are one of the natural resources in the marine ecosystem which produce a wide range of new secondary metabolites with various biological activities that play an important role in the pharmaceutical care. In this study the cytotoxic activity of 28 marine algae of Chabahar coas...
متن کاملPhylogeography and biogeography concordance in the marine gastropod Crepipatella dilatata (Calyptraeidae) along the southeastern Pacific coast.
The biogeography and phylogeography concordance hypothesis suggests that the same factors, for instance physical barriers or environmental gradients, shape both species assemblages and intraspecific genetic structure. In the marine realm, previous studies have however suggested that phylogeographic patterns are also explained by the life-history strategy of the species. However, evidence is con...
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ژورنال
عنوان ژورنال: American Zoologist
سال: 1969
ISSN: 0003-1569
DOI: 10.1093/icb/9.3.765