A CHEMICAL STUDY OF CERTAIN PACIFIC COAST FISHES
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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Demersal fish communities were studied on the lower continental shelf and the upper continental slope along the Pacific coast of northeastern Japan. Species composition, number and weight of each species were examined based on otter trawl samples at 45 stations. Mean density and biomass of demersal fishes were 131 ha–1 and 21 kg ha–1, respectively. The ten most abundant species comprised of abo...
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15 صفحه اولHistorical ecology and the conservation of large, hermaphroditic fishes in Pacific Coast kelp forest ecosystems
The intensive commercial exploitation of California sheephead (Semicossyphus pulcher) has become a complex, multimillion-dollar industry. The fishery is of concern because of high harvest levels and potential indirect impacts of sheephead removals on the structure and function of kelp forest ecosystems. California sheephead are protogynous hermaphrodites that, as predators of sea urchins and ot...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1921
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(18)86045-8