The Plankton of the SeaAmerican Elsevier Publishing Company, 1966 - 426 pagine |
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Pagina 30
... eggs under a square metre and multiplying up to the total area of sea occupied by the spawning , in the case of the cod it was estimated that just over 194 million million eggs were produced . Now , as the average number of eggs ...
... eggs under a square metre and multiplying up to the total area of sea occupied by the spawning , in the case of the cod it was estimated that just over 194 million million eggs were produced . Now , as the average number of eggs ...
Pagina 73
... eggs and sperm on different individuals and the fertilized eggs produce the planula larva already mentioned and which grows into the polyp generation again . The medusae of the two orders Gymno- blastea and Calyptoblastea were not known ...
... eggs and sperm on different individuals and the fertilized eggs produce the planula larva already mentioned and which grows into the polyp generation again . The medusae of the two orders Gymno- blastea and Calyptoblastea were not known ...
Pagina 115
... eggs and larvae . Of the few species of bony fishes that have eggs that are laid adhering to the bottom or other objects , the most important commercial ones are the herring , the sandeel , and the catfish . However , even in these ...
... eggs and larvae . Of the few species of bony fishes that have eggs that are laid adhering to the bottom or other objects , the most important commercial ones are the herring , the sandeel , and the catfish . However , even in these ...
Sommario
PREFACE page | 13 |
INTRODUCTION | 17 |
THE FIELDS of the Sea | 43 |
Copyright | |
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adult Algae algal amphipod Antapical Antarctic Appendicularia Arctic arrow worm auxospore Biddulphia biol Biological body bottom Calanus Calanus finmarchicus called carbon cells Ceratium Chaetoceros Chaetognatha ciliated Cleve coast coastal copepods Coscinodiscus Crustacea deep water depth diameter diatoms distribution Dorsal eggs Ehbg elegans euphausid Expedition female Figure fish Fisheries flagellated floating G. O. Sars genera genus gonozooid growth Grun hauled Hensen individuals jelly-fish Laboratory larva latitudes latter layer light living lower marine medusa mentioned mouth Mysidae neritic North Atlantic North Sea Norwegian Sea number of species nutrients occur oceanic organic matter oxygen parasite pelagic peridinians Peridinium photophores photosynthesis phyto phytoplankton plankton plankton organisms plants Plate polyp population produced Rhizosolenia round Sagitta samples Sars sea water seasonal segments shell shrimps spores stage standing crop stations Steemann Nielsen surface water swimming temperature thoracic Thysanoessa tion tropical tube Uropod Ventral vertical warmer zone zooplankton