167 resultados para Asinina Linne


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Mode of access: Internet.

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Tomus III has at foot of half-title: Collectionis volumen septimum.

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Has facsimile of the original ms. t.-p., reading: Caroli Linnæi M.B. & Z.C.S.R. Hortus Uplandicus. Sive Enumeratio Stirpium quæ in variis Hortis Uplandiæ imprimis autem in H. Botanico Publico Upsaliensi coluntur nec non qua' in agris faventur; Methodo propria [?] in classes distributa ... Upsal: MDCCXXX.

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Photocopy.

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Dates of t.p.s: v. 1-3, 1800; v. 4, 1801.

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"Guide de la chasse des hyménoptères par J. Sichel": p. [9]-24.

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From Annales de la Société linnéenne de Lyon. v. 26.

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Also published in Linné's Amoenitates academicae, v. 7, ed. 1, 1769; ed. 2, 1789, p. 18-41. For other reprints and translation see T.O.B.N. Krok, Bibliotheca botanica suecana (1925): Linne. 114.

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Also in Linné's Amoenitates academicae, v. 8, 1785, p. 1-12; and Gilbert's Systema plantarum europa, v. 6, 1786, Suppl. p. 1-12.

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Also published in Linne's Amoenitates academicae, v. 4, ed. 1, 1759 (and 1760); ed. 2, 1788, p. 351-367; Sel. ex. Amoenitat. v. 2, 1766, p. 153-171. cf. Hulth, Bibl. Linn. (1907) p. 101.

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Background: Instructions to fabricate mineralized structures with distinct nanoscale architectures, such as seashells and coral and vertebrate skeletons, are encoded in the genomes of a wide variety of animals. In mollusks, the mantle is responsible for the extracellular production of the shell, directing the ordered biomineralization of CaCO3 and the deposition of architectural and color patterns. The evolutionary origins of the ability to synthesize calcified structures across various metazoan taxa remain obscure, with only a small number of protein families identified from molluskan shells. The recent sequencing of a wide range of metazoan genomes coupled with the analysis of gene expression in non-model animals has allowed us to investigate the evolution and process of biomineralization in gastropod mollusks. Results: Here we show that over 25% of the genes expressed in the mantle of the vetigastropod Haliotis asinina encode secreted proteins, indicating that hundreds of proteins are likely to be contributing to shell fabrication and patterning. Almost 85% of the secretome encodes novel proteins; remarkably, only 19% of these have identifiable homologues in the full genome of the patellogastropod Lottia scutum. The spatial expression profiles of mantle genes that belong to the secretome is restricted to discrete mantle zones, with each zone responsible for the fabrication of one of the structural layers of the shell. Patterned expression of a subset of genes along the length of the mantle is indicative of roles in shell ornamentation. For example, Has-sometsuke maps precisely to pigmentation patterns in the shell, providing the first case of a gene product to be involved in molluskan shell pigmentation. We also describe the expression of two novel genes involved in nacre (mother of pearl) deposition. Conclusion: The unexpected complexity and evolvability of this secretome and the modular design of the molluskan mantle enables diversification of shell strength and design, and as such must contribute to the variety of adaptive architectures and colors found in mollusk shells. The composition of this novel mantle-specific secretome suggests that there are significant molecular differences in the ways in which gastropods synthesize their shells.