نتایج جستجو برای: crustaceans
تعداد نتایج: 3334 فیلتر نتایج به سال:
Decapods are one of the most diverse crustacean orders, with around 17,500 extant species [...]
exposed to a wide range of salinities. According to the salinity of the medium, they are submitted to osmotic water exchanges and diffusive ion movements between their hemolymph and the external medium. In order to maintain their hydromineral balance, euryhaline crustaceans are able to regulate their body fluid through a decrease in the tegument permeability and an active uptake or excretion of...
Among the oldest fossil crustaceans are those of the Late Cambrian (Furongian 499 ± 0.3-488.3 ± 1.7 Ma) of Västergötland, central Sweden and the lower Ordovician (Tremadocian 488.3 and 478.6 Ma) of the island of Őland. These are three-dimensionally preserved in nodules from the so called 'stinkstone' ('Orsten') limestone. 'Orsten'-like fossils represent tiny, often meiobenthic organsisms (Haug,...
Background: Allergy to mollusks has been the focus of fewer studies than allergy to crustaceans. Furthermore, allergy to mollusks is less well characterized. Objectives: To describe the clinical characteristics of mollusk-allergic patients, to identify the responsible allergens, and to assess crossreactivity. Methods: We performed a prospective multicenter study including 45 patients with mollu...
The intertidal salinity fluctuations provide pose a significant physical challenge for the crustaceans that live here. In present study, Charybdis japonica was selected as research species to explore genetic regulatory mechanisms of responding fluctuations. We cultured C. s with three gradients (the 15‰, 25‰, and 35‰) 68.90 Gb clean transcriptome reads were obtained by RNA-seq. All then de novo...
Food processing produces large quantities of by-products. Disposal of waste can lead to environmental and human health problems, yet often they can be turned into high value, useful products. Crustacean shell wastes from shrimp, crab, lobster, and krill contain large amounts of chitin, a polysaccharide that may be extracted after deproteinisation and demineralization of the exoskeletons .crusta...
Isopods from 29 shallow-water stations around Easter Island were identified. Thirteen species in three suborders are described as new: suborder Anthuridea, Mesanthura pascuaensis, Sauranthura rapanui, Califanthura dodecaseta, Paranthura nordenstami; suborder Asellota, Joeropsis acoloris, Joeropsis bicornis, Joeropsis limbatus, Joeropsis trilabes, Salvatiella islapascua, Uromunna biloba, Paramun...
Animals with habitats within the intertidal zone are exposed to environmental cycles that include the ebb and flow of tidal waters, changes in tidal levels associated with the lunar month, the light-dark cycle and the alternation of seasons. This intricate temporal environment results in the selection of biological timing systems with endogenous clocks that can oscillate with this wide range of...
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