Results 181 to 190 of about 9,301 (201)

Ocular reflecting pigments of some malacostraca

Journal of Experimental Marine Biology and Ecology, 1971
Abstract Eyes of nineteen malacostracan crustaceans (sixteen from coastal, three from deep water) have been examined for purines and pteridines, with a view to determining their role as reflecting pigments. White shrimp, Penaeus setiferus , received most attention; other animals examined were one isopod, one stomatopod, eight penaeids, six ...
Edward S. Zyznar, J.A.Colin Nicol
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Malacostraca

2015
AbstractThe central nervous system (CNS) of malacostracan crustaceans (e.g. shrimp, crayfish, lobsters, crabs, stomatopods, isopods, amphipods) is an arthropod-typical ventral nerve cord with fused anterior ganglia forming a brain and a suboesophageal ganglion.
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The Malacostraca of Natal

1917
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
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General Characteristics of Malacostraca

2017
Malacostracans are among one of the most species-rich classes in nature. The crustaceans in this class differ widely in size—from a few millimetres to almost one metre in length. Because of their complex morphological and anatomical structure, they are often referred to as higher crustaceans.
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Freshwater origin of Bathynellacea (Malacostraca)

Crustaceana, 2014
There are two opposing hypotheses on the origin of Bathynellacea, a marine and a freshwater one. According to the marine hypothesis, Bathynellacea invaded continental groundwater from the sea via the interstitial of marine beaches (“two-step model”), whereas according to the freshwater hypothesis the groundwater was reached from the sea via fresh ...
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Ultrastructure of maxillary gland ofAntrobathynella stammeri (Syncarida, Malacostraca)

Journal of Morphology, 1996
The maxillary gland of the highly adapted stygobiont species, Antrobathynella stammeri (Bathynellacea, Syncarida), consists of an end sac, an excretory tubule, and a terminal duct. No valve was found. The excretory tubule forms a loop extending back into the fourth thoracic segment. The end sac is composed of five typical podocytes.
Beate, Steenken, Horst Kurt, Schminke
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Origin of Antarctic Isopoda (Crustacea, Malacostraca)

Marine Biology, 1992
An analysis of the horizontal and the vertical zonation of the Antarctic Isopoda, combined with knowledge of the geological history of Antarctica and isopod phylogeny, revealed that the isopod family Serolidae and subfamily Arcturinae are likely to have evolved from ancestors that inhabited a cold-temperate Gondwanian province.
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JURASSIC ISOPOD (MALACOSTRACA: PERACARIDA) FROM RANVILLE, NORMANDY, FRANCE

Journal of Paleontology, 2005
Abstract A single specimen of a likely sphaeromatoid isopod is described from the Upper Bathonian of northern France at Ranville, Normandy. The remarkable three-dimensional preservation consists of only the head and first pereionite, but clearly constitutes a new genus and species, Reboursia ranvillensis.
Guinot, D., Wilson, G.D.F., Schram, F.R.
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Morphology and evolution of Malacostraca

2014
In this dissertation project comparative morphological studies on the nervous system, mandible structure and sensory equipment of Decapoda and Peracarida are presented and interpreted with regard to the evolution of the taxa. This is a cumulative dissertation and the results were obtained in several separate publications.
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Convergences Between Late Paleozoic and Modern Cardidoid Malacostraca

Systematic Biology, 1974
Schram, F. R. (Dept. of Zool., Eastern Ill. U., Charleston, lll. 61920) 1974. Convergences between Late Paleozoic and modern caridoid Malacostraca. Syst. Zool. 23:323-332.-Study of the Middle Pennsylvanian, Mazon Creek, Essex fauna Crustacea (Johnson and Richardson, 1966; and Richardson and Johnson, 1971) of northeastern Illinois has prompted an ...
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