Unknown
Tokai Univ. Pr.
In:
In: Recent advances in cephalopod fisheries biology. , ed. by Okutani, T., O'Dor, R. K. and Kubodera, T. Tokai Univ. Pr., Tokyo, pp. 365-373. ISBN 4-486-01233-X
Publication Date:
2020-06-04
Description:
The cephalopod fauna of the seamounts, guyots and shallow banks consists of following main groups of species: I. Bottom and near-bottom species that permanently live on seamounts; 1 A shallow-water species inhabiting the coastal zone and the shelf, they are found mosly on the Saya de Malha Bank (Indian Ocean); 1 B-Lower sublittoral and upper bathyal species. 2. Near-bottom and benthopelagic species that spawn on the bottom but arise into midwater. 3. Nerito-oceanic species living as paralarvae and juveniles in the midwater but spawn on or over the bottom (3A) or near the surface over the tops or slops (3B). 4. lnterzonal vertical migrators advected by the currents over the seamounts at night and descending to the bottom at day. 5. Non-migrating pelagic species advected by the currents on the tops or slopes of seamounts. 6. Pelagic nektonic squids that avoid areas over the summits. A special thalassobathyal cephalopod fauna distinct from that of continental slopes do not appear to be present. With respect to the cephalopod fauna the seamounts are the "islands" in the sense of MacArthur and Wilson (1967). The mode of the formation of its fauna may be explained only by the dispersionistic, not by the vicarionistic paradigm.
Type:
Book chapter
,
PeerReviewed
Format:
text
|
Location |
Call Number |
Expected |
Availability |
