By Professor Dr. Letterio Guglielmo (auth.), Professor Dr. Letterio Guglielmo, Dr. Adrianna Ianora (eds.)
This is the second one of 2 volumes of the "Atlas of Marine Zooplankton - Straits of Magellan". It constitutes a massive contribution to the examine of the faunal assemblages of the realm the place the waters of the Atlantic and Pacific Oceans combine, and is designed to permit speedy id of the 39 species defined, numerous of that are new to the sector.
This quantity offers with the amphipods, euphausiids, mysids, ostracods and chaetognaths, their taxonomy, spatial distribution and abundances. history information on their actual and organic environments is additionally supplied. Emphasis is given to illustrations - so much of them top quality scanning electron micrographs plus drawings -, observed via short taxonomic descriptions.
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Extra info for Atlas of Marine Zooplankton Straits of Magellan: Amphipods, Euphausiids, Mysids, Ostracods, and Chaetognaths
Borealis sharp process that overhangs ischial segment; as a characteristic amphipod in the 200-500-mmetacarpus smaller than carpus. 6th pereopod depth layers of the NW boreal Pacific Ocean. Vishorter than 5th. 7th pereopod small and weak. nogradov (1970) reports a depth range for the Outer rami of 1st and 2nd uropods spine-like; species from mesopelagic (200-500 m) to bathyouter rami oflast uropod as long as peduncle. 1st pelagic (2000-3000 m) waters. In the Straits of uropod ornated with fine teeth on outer margin; Magellan, it was found only at 2 very deep Pacific inner margin bearing strong spines along entire stations.
Rhachotropis schellenbergi Andres, 1982: p. 174, figs. 12-15a. 0 mm (8 specimens) females: 7-9 mm (6 specimens) Male. Mesosome smooth; 1st to 3rd segments of metasome tricarinate. Median keel of 3rd metasomal segment rounded posteriorly. 1st epimeral plate lacking teeth. 3rd epimeral plate rounded and serrated. lst coxal plate protruding forward. 1st segment of flagellum on antennulae bearing numerous aesthetascs. 2nd antennae with last two articles of peduncle bearing calceoli. 1st and 2nd pereopods similar to gnathopods.
1 5 11 13 15 f I :X: 10.. 44 /, -100 - - - ' - - - ' - - - - - . J ' - - - 10 2 10 ' 10° 10 5 0 10 Ind. 100 m·3 Fig. 3. Eusirus antarcticus. 5 Rhachotropis schellenbergi Andres, 1982 Rhachotropis sp. Schellenberg, 1931: p. 173. Rhachotropis schellenbergi Andres, 1982: p. 174, figs. 12-15a. 0 mm (8 specimens) females: 7-9 mm (6 specimens) Male. Mesosome smooth; 1st to 3rd segments of metasome tricarinate. Median keel of 3rd metasomal segment rounded posteriorly. 1st epimeral plate lacking teeth.