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1.
Zootaxa ; (3802): 75-84, 2014 May 23.
Article in English | MEDLINE | ID: mdl-24870993

ABSTRACT

We present and describe the fairy shrimp Streptocephalus sahyadriensis sp. nov. from the Western Ghats of India. This species is most similar to S. simplex Gurney, 1906 and S. dichotomus Baird, 1860 sharing similar basic antennal appendage morphology. However, S. sahyadriensis sp. nov. differs in the form of the ornamentation on the peduncle and the arrangement and form of spines on the antennal appendage. The three species also have different egg surface morphologies. The Asian species of Streptocephalus are discussed and a key to species is provided.


Subject(s)
Anostraca/anatomy & histology , Anostraca/chemistry , Animals , Anostraca/growth & development , Anostraca/ultrastructure , Female , India , Male , Microscopy, Electron, Scanning , Ovum/ultrastructure
2.
J Environ Monit ; 11(4): 723-5, 2009 Apr.
Article in English | MEDLINE | ID: mdl-19557220

ABSTRACT

A sensitive liquid chromatography-tandem mass spectrometry (LC-MS/MS) method has been developed for the determination of carbamazepine in microgram quantities of crustacean Thamnocephalus platyurus and the algae Pseudokirchneriella subcapitata at the ng L(-1) level. This fully validated method applied to a bioaccumulation study was found suitable for the detection of carbamazepine in small aquatic tissues.


Subject(s)
Anostraca/chemistry , Carbamazepine/analysis , Environmental Monitoring/methods , Eukaryota/chemistry , Water Pollutants, Chemical/analysis , Animals , Chromatography, Liquid , Tandem Mass Spectrometry
3.
J Agric Food Chem ; 52(23): 7033-8, 2004 Nov 17.
Article in English | MEDLINE | ID: mdl-15537314

ABSTRACT

Fatty acids are the largest component of lipids and have become a useful tool in the determination of live feeds to a variety of cultured species. Bioencapsulation is a technique which allows high-level incorporation of desired components (i.e., fatty acids, vitamins, antibiotics, etc.) in live feeds, which in turn can be supplemented to the consumer organisms. The procedure described in the present study serves as a platform of technology for enriching the Streptocephalus dichotomus. Uptake of two enrichment diets (ALGAMAC2000 and DHA-SELCO) by adult S. dichotomus was investigated. The fatty acid profile supports the hypothesis that the enrichment diet increases the level of essential fatty acids, such as linolic, linolenic, eicosapentenoic, and docosahexaenoic acids. The average content (percent of total fatty acids detected) of the enriched organism by different highly unsaturated fatty acid (HUFA) products were as follows: ALGAMAC2000 showed 14-22% saturated fatty acid (SFA), 17-18% monounsaturated fatty acid (MUFA), 28-41% polyunsaturated fatty acid (PUFA), 23-34% n-3, and 4.9-7.5% n-6, whereas DHA-SELCO showed about 20-23% SFA, 20-26% MUFA, 38% PUFA, 28-31% n-3, and 7.5-10% n-6. Our present investigation proves that both HUFA-rich diets appear to be an appropriate enrichment diet, and further provides an additional rationale for using fairy shrimp as a maturation diet for any cultivable freshwater organism.


Subject(s)
Anostraca/chemistry , Diet , Emulsions/chemistry , Fatty Acids, Unsaturated/analysis , Fatty Acids/analysis , Animals , Anostraca/growth & development , Emulsions/administration & dosage , Fatty Acids, Unsaturated/administration & dosage
4.
Article in English | MEDLINE | ID: mdl-12781971

ABSTRACT

The carotenoprotein complexes of a freshwater fairy shrimp (Streptocephalus dichotomus) and a daphnid (Moina micrura) were characterised and compared. Based on thin layer chromatography and mass spectral analysis, a variety of cartenoprotein complexes such as astaxanthin, canthaxanthin, antheraxanthin, lutein, beta-cryptoxanthin and violaxanthin were found. Both crustaceans had astaxanthin and canthaxanthin as predominant prosthetic groups. Amino acid analysis of the complexes further revealed high levels of asparagine, glutamine and glycine in both species. Our study highlights the presence of naturally available carotenoid species in both crustaceans and their possible inter-conversion in anostracans.


Subject(s)
Anostraca/chemistry , Carotenoids/chemistry , Cladocera/chemistry , Proteins/chemistry , beta Carotene/analogs & derivatives , Animals , Asparagine/analysis , Canthaxanthin/analysis , Carotenoids/analysis , Chromatography, Thin Layer , Fresh Water , Glutamine/analysis , Glycine/analysis , Lutein/analysis , Molecular Structure , Proteins/analysis , Xanthophylls , beta Carotene/analysis
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