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Buoy Barnacle (Dosima fascicularis)

…a species of lepadid goose barnacle that boasts a cosmopolitan distribution, with a preference for temperate seas. True to its common name adult D. fascicularis will hang downwards from the water surface, held up by a float, and is carried along by currents filter feeding along the way. Larval D. fascicularis are planktonic and must attach to a float (usually flotsam) for metamorphosis into the adult form. However, the adults are eventually capable of using their own float, and are usually seen in aggregations of many individuals all using the same float.

Dosima fascicularis was formerly placed in the genus Lepas but is now placed in its own monotypic genus Dosima. Dosima is distinguished from Lepas by the exceptional brittleness of its exoskeleton and by the form of the carina.

Classification

Animalia-Arthropoda-Crustacea-Maxillopoda-Cirripedia-Pedunculata-Lepadidae-Dosima-D. fascicularis

Images: Notafly and Keith Hiscock

CHALCONE AGAINST CANCER

Bright yellow crystals of spinochalcone A decorate the bottom of a flask. Cristina Castillo, an undergraduate pharmaceutical chemistry major at the Scientific Research Center of Yucatán in Mexico, isolated these crystals from Aeschynomene fascicularis, a plant used in Mayan traditional medicine. The experiment was part of her undergraduate thesis to determine how spinochalcone A affects cancer cells.

Credit: Cristina Castillo (Enter our photo contest here)

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Macaca fascicularis #vetlife #wildlife (at Biodiversity Management Bureau)

Transcriptome reconstruction and annotation of cynomolgus and African green monkey

Background: Non-human primates (NHPs) and humans share major biological mechanisms, functions, and responses due to their close #evolutionary relationship and, as such, provide ideal animal models to study human diseases. #RNA expression in NHPs provides specific signatures that are informative of disease mechanisms and therapeutic modes of action. Unlike the human transcriptome, the transcriptomes of major NHP animal models are yet to be comprehensively annotated. Results: In this manuscript, employing deep #RNA sequencing of seven tissue samples, we characterize the transcriptomes of two commonly used NHP animal models: Cynomolgus macaque (Macaca fascicularis) and African green monkey (Chlorocebus aethiops). We present the Multi-Species Annotation (MSA) pipeline that leverages well-annotated primate species and annotates 99.8% of reconstructed transcripts. We elucidate tissue-specific expression profiles and report 13 experimentally validated novel transcripts in these NHP animal models. Conclusion: We report comprehensively annotated transcriptomes of two non-human primates, which we have made publically available on a customized UCSC Genome Browser interface. The MSA pipeline is also freely available. http://bit.ly/1r6mXeB #BMC

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