Canadian Journal of Zoology

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Tissue-specific allometry of an aerobic respiratory enzyme in a large and a small species of cyprinid (Teleostei)
Canadian Journal of Zoology - Tập 66 Số 10 - Trang 2199-2208 - 1988
Edward M. Goolish, Ira R. Adelman
The aerobic enzyme cytochrome-c oxidase (CCO) was used as a measure of tissue-specific metabolic capacity. Changes in tissue CCO activity with increased body size were combined with allometric relationships for tissue weight to describe changes in energy use with increased body size. A large (common carp, Cyprinus carpio) and a small (common shiner, Notropis cornutus) species of cyprinid ...... hiện toàn bộ
RESPIRATION OF FISHES WITH SPECIAL EMPHASIS ON STANDARD OXYGEN CONSUMPTION: II. INFLUENCE OF WEIGHT AND TEMPERATURE ON RESPIRATION OF SEVERAL SPECIES
Canadian Journal of Zoology - Tập 42 Số 2 - Trang 177-188 - 1964
F. W. H. Beamish
Standard oxygen consumption, as estimated by simultaneously measuring spontaneous activity and oxygen consumption, for five species of freshwater fishes, was measured in relation to weight and temperature. The fish studied were brown trout, Sulmo trutta; brook trout, Salvelinus fontinalis; common white sucker, Catostomus commersonii; brown bullhead, Ictalurus nebulosus; and carp, Cyprinus...... hiện toàn bộ
Staining methods for sections of epon-embedded tissues for light microscopy
Canadian Journal of Zoology - Tập 48 Số 1 - Trang 189-191 - 1970
C. Roland Leeson, Thomas S. Leeson
Sections 0.5–2 μ thick are mounted on clean glass slides and allowed to dry. A number of staining procedures are described. After the sections are stained, permanent preparations are made by mounting them in a synthetic resin. The methods result in sections which are suitable for routine light microscopy and for comparison with adjacent electron microscopic sections.
Tissue specific isozymes of alanopine dehydrogenase in the channeled whelk Busycotypus canaliculatum
Canadian Journal of Zoology - Tập 60 Số 7 - Trang 1568-1572 - 1982
William C. Plaxton, Kenneth B. Storey
The tissues of the channeled whelk Busycotypus canaliculatum displayed activities of three glycolytic dehydrogenases, alanopine dehydrogenase (ADH), octopine dehydrogenase (ODH), and lactate dehydrogenase (LDH). ADH and ODH were present in all seven tissues (hepatopancreas, gill, kidney, and mantle, ventricle, foot, and proboscis muscles) tested. ADH was the major cytosolic dehydrogenase ...... hiện toàn bộ
On the role of octopine dehydrogenase in cephalopod mantle muscle metabolism
Canadian Journal of Zoology - Tập 54 Số 6 - Trang 871-878 - 1976
Jeremy H. A. Fields, John J. Baldwin, Peter W. Hochachka
Octopine dehydrogenases from the mantle muscle of the squid, Symplectoteuthis oualaniensis, and of the octopus, Octopus ornatus, were kinetically characterized and compared. In the squid, the specific activity of the enzyme was about 110 μmol product formed per minute per gram wet weight; in the octopus that value was over 600. Both enzymes show similar pH dependence; in the direction of ...... hiện toàn bộ
Individual recognition by song in white-throated sparrows. I. Discrimination of songs of neighbors and strangers
Canadian Journal of Zoology - Tập 53 Số 7 - Trang 879-888 - 1975
Ronald J. Brooks, J. Bruce Falls
Playback of recorded songs of white-throated sparrows (Zonotrichia albicollis) to territorial males elicited a stronger response to songs of strangers than to songs of territorial neighbors. Responses to a bird's own song were intermediate. All test songs were played on the territorial boundary adjacent to the neighbor used in the experiment. Peak of response by song occurred in the 1st m...... hiện toàn bộ
HYDROMERMIS CHURCHILLENSIS N. SP. (NEMATODA: MERMITHIDAE) A PARASITE OF AEDES COMMUNIS (DeG.) FROM CHURCHILL, MANITOBA, WITH OBSERVATIONS OF ITS INCIDENCE AND BIONOMICS
Canadian Journal of Zoology - Tập 38 Số 3 - Trang 465-474 - 1960
H. E. Welch
Hydromermis churchillensis n. sp. is described. It is distinguished from other species of Hydromermis mainly by the fused spicules and pointed termini of both sexes. One to six larval nematodes may be found in a larva of Aedes communis (DeG.). They emerge to become free-living, molt, mature, mate, and oviposit in 2 months. Host activity is hindered, pupation prevented, and the host usuall...... hiện toàn bộ
Evidence for a memory process in the turning behavior of free swimming goldfish
Canadian Journal of Zoology - Tập 48 Số 4 - Trang 813-815 - 1970
Garson F. Westlake, H. Kleerekoper
Positive correlation was established between the magnitudes of consecutive turns in opposite directions of naive goldfish in a monitor tank. Evidence is presented for a decrease in this correlation with increasing time between turns; no change in correlation could be established with distance between turns. Results are discussed with reference to the literature on spontaneous alternation ...... hiện toàn bộ
An increase in habitat complexity reduces aggression and monopolization of food by zebra fish (<i>Danio rerio</i>)
Canadian Journal of Zoology - Tập 76 Số 4 - Trang 770-772 - 1998
Seán P. Basquill, James W. A. Grant
Seasonal changes in thyroid hormones and osmoregulation in mature male parr and 1- and 2-year-old immature parr of Baltic salmon (Salmo salar L.)
Canadian Journal of Zoology - Tập 67 Số 4 - Trang 942-947 - 1989
Magnus Rydevik, Eva Bergström, Hans Lundqvist, Ljusk Ola Eriksson
One-year-old Atlantic salmon improved their seawater adaptability in late spring, at a time when 2-year-old fish smoltify, though not to the same degree as the latter. One-year-old males that matured precociously were less able to adapt to seawater than immature fish. Both 1- and 2-year-old immature salmon increased their plasma levels of thyroxine when entering the smolt stage; however, ...... hiện toàn bộ
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