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Filogenia da subfamília Corydoradinae (Siluriformes : Callichthyidae)Britto , Marcelo Ribeiro de January 1997 (has links)
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Previous issue date: 1997 / CAPES / Corydoradinae, incluindo os gêneros Aspidoras, Brochis e Corydoras, constitui cerca de
90% da família de bagres neotropicais Callichthyidae, um grupo monofilético bem
definido. Uma hipótese filogenética da subfamília é estabelecida com base em 58
caracteres, abrangendo aqueles propostos por REIS (1993) para definir Corydoradinae e suas
unidades monofiléticas. Monofiletismo de Corydoradinae é confirmado, assim como de
Aspidoras e Brochis. Dois dados principais compõem a subfamília, um com espécies de
Corydoras mais relacionadas com Aspidoras do que com Brochis, e outro com espécies
mais relacionadas com Brochis. Estes fatores contrastam com a hipótese prévia que
considera Brochis e todas as espécies de Corydoras em um agrupamento monofilético, e
Aspidoras como seu grupo-irmão. Um clado composto por Aspidoras, C. habrosus, C.
paleatus, C. ehrhardti, C. nattereri, (C. grupo hastatus, C. grupo nanus, C. elegans, C.
undulatus), (C. ellisae, C. ornatus, C. prionotus, C. reticulatus, C. stenocephalus, (C.
septentrionalis (C. grupo barbatus, C. blochi, C. acutus)) é definido pela presença de
odontódeos nos infra-orbitais e pré-opérculo, e pela margem livre do opérculo angulada.
Um outro dado, ( C. flaveolus ( C. arcuatus ( C. grupo punctatus ( C. triseriatus ( C. garbei
(C. aeneus (C. eques (C. grupo rabauti + Brochis)))))))) é definido pela perda de
odontódeos no opérculo, homoplásico com Corydoras grupo hastatus. Algumas propostas
de classificação são discutidas. / Phylogeny ofthe subfamily Corydoradinae (Siluriformes : Callichthyidae)
Corydoradinae, comprising the genera Aspidoras, Brochis and Corydoras, constitutes about
90% of the neotropical catfish family Callichthyidae, a well-defined monophyletic group. A
phylogenetic hypothesis within the subfamily is erected with basis on 58 characters,
encompassing those proposed by REIS (1993) to define Corydoradinae and its monophyletic
units. Monophyly of Corydoradinae is confirmed, as well as for Aspidoras and Brochis.
Two major clades compose the subfamily, one with Corydoras species more closely related
to Aspidoras than Brochis, and other with species closer to Brochis. These features contrast
with the previous hypothesis considering Brochis and all Corydoras species in a
monophyletic assemblage
and Aspidoras as its sister-group. A clade composed of
Aspidoras, C. habrosus, C. paleatus, C. ehrhardti, C. nattereri, (C. hastatus group, C.
nanus group, C. elegans, C. undulatus), (C. ellisae, C. ornatus, C. prionotus, C. reticulatus,
C. stenocephalus, (C. septentrionalis (C. barbatus group, C. blochi, C. acutus)) is defined
by the presence of odontodes on infraorbitals and preopercle, and by an angled free border
of opercle. Another clade, (C. flaveolus (C. arcuatus (C. punctatus group (C. triseriatus (C.
garbei (C. aeneus (C. eques (C. rabauti group + Brochis)))))))) is defined by the lack of
odontodes on opercle, homoplasic with Corydoras hastatus group. Some classification
proposals are discussed.
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Celková tvrdost vody a pH při vývoji jiker u vybraných druhů akvarijních ryb / The total water hardness and pH during the egg development in selected aquarium fish speciesFRANTL, Zdeněk January 2010 (has links)
Objectives of thesis: 1.To evaluate the effect of pH and total hardness of water on the development of eggs in aquarium fish Corydoras paleatus, Corydoras paleatus albin, Tanichthys albonubes, Tanichthys albonubes gold, Aphyosemion gardneri, Aphyosemion gardneri gold. 2.Recommendation of optimal values of total hardness of water and pH for successful development of eggs for each monitored aquarium fish. Based on published data in available literature sources and on own experiments, it was evaluated how total water hardness (CM) and pH influences development of aquarium fish eggs of Aphyosemion gardneri, Aphyosemion gardneri gold, Tanichthys albonubes, Tanichthys albonubes gold, Corydoras paleatus, Corydoras paleatus albin.
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A Proteomic Analysis of Corydoras Sterbai Secretions and TissuesWictor, Erik Powell 01 January 2020 (has links)
Defensive mechanisms vary widely in the animal kingdom ranging from physical defenses like spines to chemical defenses such as toxins. Toxins in these secretions and tissues can fluctuate from enzymes to lipids to uncharacterized chemicals. Next generation -omics technology and mass spectrometry are extremely important in analyzing these samples because of their ability to distinguish minute amounts of toxic substance within a complicated sample. The goal of this experiment was to look at secretions and tissues from Corydoras sterbai. All samples in this study were proteolyzed using a mixture of Trypsin and Lys-C, fractionated, and run through nanoLC-MS/MS analysis using an Orbitrap Fusion™ Tribrid™ mass spectrometer. Using guanidine hydrochloride as a denaturant, a total of 420 database peptide matches were discovered in the secretions and up to 777 database peptide matches among the tissues. Proteins of interest found in both the secretion and in the hypothesized gland include members of the prostaglandin synthesis pathway, phospholipases, and peroxiredoxins. It is theorized that C. sterbai uses its serrated rays in addition to these proteins to defend themselves from would be predators.
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