Phosphorus and iron in Sagitta setosa and Sagitta elegans
نویسندگان
چکیده
منابع مشابه
Phylogeography of the planktonic chaetognath Sagitta setosa reveals isolation in European seas.
Numerous planktonic species have disjunct distribution patterns in the world's oceans. However, it is unclear whether these are truly unconnected by gene flow, or whether they are composed of morphologically cryptic species. The marine planktonic chaetognath Sagitta setosa Müller has a discontinuous geographic distribution over the continental shelf in the northeastern Atlantic, Mediterranean S...
متن کاملThe junctional complex in the intestine of Sagitta setosa (Chaetognatha): the paired septate junction.
The junctional complex of the intestine of Sagitta setosa has been studied in tissues stained with uranyl acetate or after lanthanum impregnation, and by freeze-cleavage. All types of junctions have been characterized in both perpendicular and tangential planes. From the apex to the base of the cell the following junctions occur in this order: a zonula adhaerens; a septate junction where the se...
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Chemical analysis of fish otoliths has become an important technique in fisheries science with widespread applications. Most research up to this point has focused predominantly on sagittal otoliths, but the underlying assumptions may also apply to lapilli. The goal of this study was to determine whether lapilli and sagittae have the same otolith chemistry and whether one can be substituted for ...
متن کاملContinuous Optimization The sagitta method for solving linear programs q
A new non-simplex active-set method for solving linear programs is presented. This method uses a ‘‘global’’ viewpoint of the problem, it starts without any iteration point and its basic characteristic is that the first feasible point determined by the method is, generally, an optimal solution. The computational results obtained for a range-space implementation are highly encouraging. 2003 Elsev...
متن کاملMorphology and morphometric relationships of the sagitta of Diapterus auratus (Perciformes: Gerreidae) from Veracruz, Mexico.
Sagittae otoliths are the most studied because of their morphological variability and size; the sagittae may also have valuable taxonomic use and for D. auratus has not yet been described. In the present study we present a morphological description of the sagitta otolith and an analysis of its correlation with various morphometric parameters. The biological material was captured with a beach se...
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ژورنال
عنوان ژورنال: Journal of the Marine Biological Association of the United Kingdom
سال: 1940
ISSN: 0025-3154,1469-7769
DOI: 10.1017/s0025315400054497