Results 121 to 130 of about 1,688 (157)
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Allometry of thermal limitation in the cephalopod Sepia officinalis
Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, 2007Cuttlefish (Sepia officinalis) routine metabolic rate was determined in response to acute thermal changes at a rate of 1 degrees C h(-1) for a variety of animal sizes (15-496 g wet mass, laboratory reared at 15 degrees C). In a thermal frame of 11 to 23 degrees C, oxygen consumption rates (MO(2), in mumol O(2) g(-1) min(-1)) were observed to rise with ...
Frank, Melzner +2 more
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Sign tracking in cuttlefish (Sepia officinalis).
Journal of Comparative Psychology, 1999Two groups of cuttlefish (Sepia officinalis) were used to demonstrate classical conditioning in this species and to determine whether the resulting approach response would be that of sign tracking or goal tracking. For cuttlefish in the paired condition, a flashing light was presented at one end of a long tank followed by food dropped into the center ...
J E, Purdy, A C, Roberts, C A, Garcia
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Melanogenesis in the Ink Gland of Sepia officinalis
Pigment Cell Research, 2003Among the various melanin‐producing systems, the ink gland of the cuttlefish (Sepia officinalis) has traditionally been regarded as a most convenient model system for the studies of melanogenesis. The ink gland is a highly specialized organ with immature cells in the inner portion, from where the cells gradually mature, migrate towards the outer ...
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Superoxide dismutase in Sepia officinalis L.
Comparative Biochemistry and Physiology Part B: Comparative Biochemistry, 1981Abstract 1. 1. Fractionation of a crude banchial gland extract of Sepia officinalis L. on a ACA-22 column resulted in five protein fractions. The presence of superoxide dismutase (SOD) was established in three of them (P3, P4 and P5). The bulk of the SOD activity was present in fraction P4. 2. 2. The enzyme was temperature sensitive.
G.H. Wolf, R. Heyneman, W. Decleir
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Immuno-EM of Sepia officinalis hemocyanin
1986Negatively stained molecules of Sepia officinalis hemocyanin (Hc) (Mr 3.8×106) have the form of a partly hollow cylinder with 350 A diameter and 170 A height. The circular profiles show material inside the cylinder: the so-called collar which has 5-fold (or possibly 10-fold) symmetry (1). At higher pH values this Hc dissociates into five subunits, each
T. Wichertjes +5 more
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Die Pericardialdrüse von Sepia officinalis
Zeitschrift für vergleichende Physiologie, 1931Bei Sepia officinalis last sich die Pericardialdruse beiderseitig entfernen. Die Tiere machen zunachst einen vollig normalen Eindruck, gehen aber langstens in viermal 24 Stunden zugrunde. Exstirpiert man nur ein Organ und bindet das andere nur ab, so wird die Lebensdauer etwas verlangert.
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Carbonic anhydrase of Sepia officinalis L
Comparative Biochemistry and Physiology Part B: Comparative Biochemistry, 1971Abstract 1. 1. Carbonic anhydrase of the mantle muscle of the cephalopod, Sepia officinalis, is a zinc protein, comparable to the highly active soluble vertebrate isoenzyme present in human and bovine red blood cells. 2. 2. A procedure for the extraction of the membrane bound enzyme using detergents, acetone and centrifugation is presented ...
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2010
At the moment melanins are still enigmatic bio-pigments with structure and determination methods not clearly understood for the international scientific community. Among biopolymers, melanins are unique in many aspects. Some essential biopolymers (proteins, nucleic acids and carbohydrates) are chemically well characterized and can be determined using ...
Magarelli P. +2 more
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At the moment melanins are still enigmatic bio-pigments with structure and determination methods not clearly understood for the international scientific community. Among biopolymers, melanins are unique in many aspects. Some essential biopolymers (proteins, nucleic acids and carbohydrates) are chemically well characterized and can be determined using ...
Magarelli P. +2 more
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Ontogeny of memory in the cuttlefish (Sepia officinalis)
1997International ...
Dickel, Ludovic +2 more
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