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A new pimelodid catfish from the deep river channel of the rio napo eastern ecuador pisces pimelodidae


, : A new pimelodid catfish from the deep river channel of the rio napo eastern ecuador pisces pimelodidae. Proceedings of the Academy of Natural Sciences of Philadelphia 138(1): 46-52

Horiomyzon retropinnatus n. gen. and sp. was collected with a fine mesh otter trawl in the deep-river channel of the Rio Napo, eastern Ecuador. It is distinguished from all known pimelodid catfishes by: (1) a pectoral fin with the anteriormost, unbranched element shorter than any branched pectoral-fin ray, and branched rays 4-6 distinctly longer than the other branched rays; (2) a row of irregular, fleshy papillae on the upper lip; and (3) the postcleithral process expanded posterodorsally, forming a thin, bulbous structure. Form of the first pectoral-fin ray (unserrated, flexible distally) and a relatively low total number of vertebrae (36) suggest that this new taxon may be related to a group of genera including Imparfinis, Nannorhamdia, Pariolius, and Cetopsorhamdia.

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Cheng, Y.; Hua, W-Qian.; Zhou, Y-Hua., 2012: 1-tert-Butyl-3-(pyridin-2-ylmethyl-κN)imidazol-2-yl-idene-κC]carbonyl-dichlorido(dimethyl sulfoxide-κS)ruthenium(II). In the title complex, [RuCl(2)(C(13)H(17)N(3))(C(2)H(6)OS)(CO)], the coordination environment around the Ru atom is slightly distorted octa-hedral. The Cl atoms are mutually trans to the dimethyl sulfoxide ligand and the imidazole carbene C atom,...

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Potas, J.R.; Dampney, R.A.L., 2003: Sympathoinhibitory pathway from caudal midline medulla to RVLM is independent of baroreceptor reflex pathway. Glutamate stimulation of the caudal midline medulla (CMM) causes profound sympathoinhibition due to GABAergic inhibition of presympathetic neurons in the rostral ventrolateral medulla (RVLM). We investigated whether the sympathoinhibitory pathway...

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Kann, O.; Taubenberger, N.; Huchzermeyer, C.; Papageorgiou, I.E.; Benninger, F.; Heinemann, U.; Kovács, R., 2012: Muscarinic receptor activation determines the effects of store-operated Ca(2+)-entry on excitability and energy metabolism in pyramidal neurons. In various cell types, depletion of intracellular Ca<sup loc="post">2+</sup>-stores results in store-operated Ca<sup loc="post">2+</sup>-entry (SOCE) across the cellular membrane. However, the effects of...

Patrick, Rm, 1978: Freezing yams or sweetpotatoes. Coop ext pub: 78, 1964

Cnudde, F.; Raccurt, C.; Boulard, F.; Terron-Aboud, B.; Nicolas, M.; Juminer, B., 1994: Diffuse cutaneous leishmaniasis with visceral dissemination in an AIDS patient in Guadeloupe, West Indies. Aids 8(4): 559-560

Zhao, J-X.; Hu, J.; Zhu, M-J.; Du, M., 2011: Trenbolone enhances myogenic differentiation by enhancing β-catenin signaling in muscle-derived stem cells of cattle. Testosterone is a key hormone regulating animal growth and development, which promotes skeletal muscle growth and inhibits fat deposition; however, the underlying mechanisms remain poorly defined. Because canonical Wingless and Int/β-catenin sign...

Heyward, N.B., 1952: N.B. Heyward. Journal of the South Carolina Medical Association 48(7): 192-192