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Zur Ökologie und Wuchsform der Säulenkoralle Dendrogyra cylindrus Ehrenberg Beobachtungen in den Riffen der Insel San Andrés (Karibisches Meer, Kolumbien) OceanDocs
Geister, J..
Según observaciones submarinas realizadas alrededor de la Isla de San Andrés el coral de columnas Dendrogyra cylindrus prefiere como habitat las regiones protegidas como el arrecife de Sotavento y las barrancas y plataformas submarinas de la costa Occidental desde 1 m hasta unos 20 m de profundidad. Es el único coral de tamaño grande que se destaca en su capacidad de resistir a la abrasión fuerte por fragmentos de corales sueltos, movidos por la resaca de las ocasionales tempestades invernales en la costa occidental. Dendrogyra se mantiene en este ambiente, al lado de unas pocas especies de octocorales y escleractinios incrustantes y hemisféricos de tamaño pequeño sin sufrir daño permanente, por medio de su base ancha, su estructura maciza y sus septos...
Tipo: Journal Contribution Palavras-chave: Coral; Coral reefs; Exoskeleton; Coral reefs; Exoskeleton; Http://aims.fao.org/aos/agrovoc/c_1880; Http://aims.fao.org/aos/agrovoc/c_2754.
Ano: 1972 URL: http://hdl.handle.net/1834/3307
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Caracterización y cronología del exoesqueleto en la centolla Lithodes santolla (Crustacea, Lithodidae) del Golfo San Jorge, Argentina. OceanDocs
Di Marco, E.J..
Southern king crab Lithodes santolla specimens were captured during INIDEP research cruises in the San Jorge Gulf (45 degree -47' S, 64 degree -68' W), Argentine Sea, in March, April, July and August 2001 and August 2002. In order to determine qualitative and quantitative characters related to the shell ageing, a macroscopic examination of specimens was performed. The main considered characters were: shell hardness, ventral shell coloration, necrosis development, merus meat content, kind of epibionts, abrasions length on coxa and maximum size of ventral necrosis. A hierarchical grouping from the qualitative characters was elaborated and associations among these characters were established. Thus, a key to discriminate the specimens in different groups was...
Tipo: Theses and Dissertations Palavras-chave: Exoskeleton; Moulting; Taxonomy; Carcinology; Taxonomy; Exoskeleton; Moulting; Cluster sampling.
Ano: 2002 URL: http://hdl.handle.net/1834/4006
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Near-infrared spectroscopy and microstructure of the scales of Sabethes ( Sabethes ) albiprivus (Diptera: Culicidae) Rev. Bras. entomol.
Westphal-Ferreira,Betina; Navarro-Silva,Mario Antônio.
ABSTRACT Near-infrared spectroscopy and microstructure of the scales of Sabethes (Sabethes) albiprivus (Diptera: Culicidae). Sabethes (Sabethes) albiprivus Theobald individuals vary considerably in size and color of the reflections of the scales on their thorax, abdomen, antepronotal lobes and occiput. The goal of this study was to investigate and to characterize the differences in the color of the scales among preserved specimens and to analyze the differences in the microstructures of the scales that cover their bodies using near-infrared spectroscopy, and to evaluate whether the latter is efficient in distinguishing the populations. A total of 201 adult females were analyzed for the characterization of color patterns. In addition, absorbance spectra and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Chemical composition; Exoskeleton; Morphotypes; Nanostructures.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262017000100091
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