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) 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 ... ...
Canadian Journal of Zoology - Tập 66 Số 10 - Trang 2199-2208 - 1988
Macrobenthic associates of bioherms of the polychaete Sabellaria cementarium from northern Puget Sound, Washington Bioherms of Sabellaria cementarium Moore, 1906 were examined as the habitat of a diversified community in northern Puget Sound, Washington. Aggregations of around 3500 tubes/m2 were found 15–40 m below the surface, in the aphotic zone. A rich assemblage of macrobenthos finds refuge and food in this habitat, which favors most organisms (especially those leading a seden... ...
Canadian Journal of Zoology - Tập 72 Số 3 - Trang 514-525 - 1994
Substrate selection by settling zebra mussels, Dreissena polymorpha, relative to material, texture, orientation, and sunlight Zebra mussels (Dreissena polymorpha) invaded the Great Lakes in 1986 and are considered to be a nuisance species, because of their rapid population growth and their strong byssal attachment to a variety of man-made and natural surfaces. Research on possible antifouling materials or coatings has revealed few nontoxic substrates that even retard attachment of mussels. The influence of sever... ...
Canadian Journal of Zoology - Tập 78 Số 5 - Trang 787-793 - 2000
Dualistic spawning behaviour of the cunner, Tautogolabrus adspersus (Pisces: Labridae), in Bonne Bay, Newfoundland Group spawning and pair spawning cunners, Tautogolabrus adspersus, were studied at Bonne Bay, Newfoundland. This is the first recorded occurrence of both types of spawning behaviour of this species at a single location. Group spawning occurred within aggregations of 30 to > 150 fish. Cunners in group spawning aggregations ranged in length from 80 to 180 mm. Those with brown phase colou... ...
Canadian Journal of Zoology - Tập 59 Số 8 - Trang 1582-1585 - 1981
Restricted movements and homing of the cunner, Tautogolabrus adspersus (Walbaum) (Pisces: Labridae) Tagging studies showed that cunners (Tautogolabrus adspersus) occupied small home ranges and that they would return to their home sites after displacements of at least 4 km. Cunners successfully homed after being held in aquaria for 9 months. They do not appear to be able to home across deep water.
Canadian Journal of Zoology - Tập 53 Số 10 - Trang 1427-1431 - 1975
Field observations on the reproductive behaviour of the cunner, Tautogolabrus adspersus (Walbaum), in Newfoundland Courtship behaviour and pair spawning of the cunner, Tautogolabrus adspersus (Walbaum) were observed in Conception Bay, Newfoundland, during midsummer of 1977 and 1978. Courtship displays were recorded between 0600 and 2100 hours and spawns between 1300 and 2100 hours. The frequency of both courtship behaviour and spawns varied with the time of day. Spawning, but not courtship, is correla... ...
Canadian Journal of Zoology - Tập 57 Số 1 - Trang 247-256 - 1979
ON THE DEVELOPMENT AND TRANSMISSION OF COSMOCERCOIDES DUKAE OF TERRESTRIAL MOLLUSCS IN ONTARIO Nematodes from the mantle cavity of Discus cronkhitei, Zonitoides arborea, and Deroceras gracile, and the rectum of Rana spp., Bufo americanus, and Ambystoma jeffersonianum in Ontario are referred tentatively to Cosmocercoides dukae (Holl, 1928), In molluscs, females deposit third-stage larvae that leave the mantle cavity and appear in slime trails left by snails; when placed on the foot ... ...
Canadian Journal of Zoology - Tập 38 Số 4 - Trang 801-825 - 1960
Immediate response of the hemoglobin system of the goldfish, Carassius auratus, to temperature change Goldfish acclimated to 3 and 23 °C were characterized by two- and three-component hemoglobin systems, respectively. After acclimation to a diurnally cycling temperature regime (~3 to ~23 °C), specimens sampled at ~23 °C and ~3 °C were identical in terms of hemoglobin system complexity with those held at equivalent constant temperatures. Abrupt transfer of fish acclimated at constant 23 °C... ...
Canadian Journal of Zoology - Tập 54 Số 10 - Trang 1737-1741 - 1976
Larval and life-cycle patterns in echinodermsWe review the literature on larval development of 182 asteroids, 20 crinoids, 177 echinoids, 69 holothuroids, and 67 ophiuroids. For each class, we describe the various larval types, common features of a larval body plan, developmental patterns in terms of life-cycle character states and sequences of larval stages, phylogenetic distribution of these traits, and infer evolutionary transitio... ...
Canadian Journal of Zoology - Tập 79 Số 7 - Trang 1125-1170 - 2001
How high is high? Using percentile thresholds to identify peak bat activityPassive acoustic monitoring is a common tool used for monitoring bat activity levels. Identifying periods and locations of peak levels provides insight into bat ecology and has important management implications. One limitation of passive acoustic monitoring is the relative nature of the data, often relying on subjective interpretation of descriptive terminology such as “higher” or “lower”.... ...
Canadian Journal of Zoology - Tập 93 Số 4 - Trang 307-313 - 2015
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