Results 161 to 170 of about 3,150 (188)

Studies on photophores in the Euphausiacea

Sarsia, 1968
Abstract The present investigation concerns the adult morphology and histology of the photophores of some euphausiids and some notes on the development of the abdominal photophores of Meganyctiphanes norvegica. Some of the more important results are abstracted. The posterior cell mass inside the reflector layer is more complicated than earlier believed.
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Gregarious behaviour in crustacean micronekton (Euphausiacea, Mysidacea)

2023
Certain species of pelagic euphausiids and hyperbenthic mysids (Crustacea) show highly integrated social behaviour comparable in many aspects to schooling in higher marine organisms such as fish, squid and mammals. The ethology, form, maintenance, occurrence and population structure of aggregations of three species of euphausiid and six species of ...
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THE RELATION BETWEEN THE SCATTERING LAYER AND THE EUPHAUSIACEA

The Biological Bulletin, 1950
The source of the scattering effect is not, at present, susceptible of direct proof, but if an organism could be found whose characteristics agreed with those of the layer on a sufficient number of points, then there would be a high probability that this is the actual source of the effect. From the diurnal migration of the layer there seems no room for
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N. N.: Euphausiacea, Pancarida + Peracarida

2000
An as yet unnamed monophylum with the Euphausiacea and Pancari­da + Peracarida as adelphotaxa was established by RICHTER (1994b) with the following characteristic features.
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Development of the Stomach in Euphausia Superba Dana (Euphausiacea)

Journal of Crustacean Biology, 1993
ABSTRACT Development of the stomach, with emphasis on the filter system, was investigated in the metanauplius, calyptopis, and furcilia stages of the Antarctic krill Euphausia superba. The metanauplius lacks an elaborated stomach as well as a connection between the esophagus and the midgut. In calyptopis I, the stomach becomes functional.
Bernd Ullrich, Volker Storch
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Syncarida — N. N. (Euphausiacea, Pancarida + Peracarida)

2000
Within the Xenommacarida the Syncarida form the sister group of an as yet unnamed unity of the Euphausiacea and the Pancarida + Peracarida.
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Ecological physiology of larval euphausiids, Euphausia superba (Euphausiacea)

1991
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Ross, Robin M, Quetin, Langdon B.
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Limb articulation in caridoid crustaceans revisited – New evidence from Euphausiacea (Malacostraca)

Arthropod Structure & Development, 2008
The propodial articulation of thoracopods in Malacostraca is revisited. Two major joints at the base of the limb, a thorax-coxa joint and a coxa-basis joint permit promotion-remotion and abduction-adduction, respectively. In representatives of Decapoda, Anaspidacea and Euphausiacea, the coxa forms proximally a dicondylic articulation with the thorax ...
Christian, Haupt, Stefan, Richter
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Krill (Euphausiacea) life history and aspects of population dynamics

Canadian Journal of Fisheries and Aquatic Sciences, 2000
The present perspective summarizes information on the variability of krill population parameters, which can assist in interpreting fluctuations in euphausiid populations. This requires knowledge about potential longevity of an individual as well as the age composition of populations.
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Zoogeography of the genus Nematoscelis (Crustacea, Euphausiacea)

1974
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
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