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
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 were used...
Macrobenthic associates of bioherms of the polychaete Sabellaria cementarium from northern Puget Sound, Washington
Canadian Journal of Zoology - Tập 72 Số 3 - Trang 514-525 - 1994
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 sedentary life). The community
seem...
Substrate selection by settling zebra mussels, Dreissena polymorpha, relative to material, texture, orientation, and sunlight
Canadian Journal of Zoology - Tập 78 Số 5 - Trang 787-793 - 2000
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
several substr...
Dualistic spawning behaviour of the cunner, Tautogolabrus adspersus (Pisces: Labridae), in Bonne Bay, Newfoundland
Canadian Journal of Zoology - Tập 59 Số 8 - Trang 1582-1585 - 1981
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
colouration outnu...
Restricted movements and homing of the cunner, Tautogolabrus adspersus (Walbaum) (Pisces: Labridae)
Canadian Journal of Zoology - Tập 53 Số 10 - Trang 1427-1431 - 1975
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.
Field observations on the reproductive behaviour of the cunner, Tautogolabrus adspersus (Walbaum), in Newfoundland
Canadian Journal of Zoology - Tập 57 Số 1 - Trang 247-256 - 1979
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
correlated with ...
ON THE DEVELOPMENT AND TRANSMISSION OF COSMOCERCOIDES DUKAE OF TERRESTRIAL MOLLUSCS IN ONTARIO
Canadian Journal of Zoology - Tập 38 Số 4 - Trang 801-825 - 1960
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
of snails...
Immediate response of the hemoglobin system of the goldfish, Carassius auratus, to temperature change
Canadian Journal of Zoology - Tập 54 Số 10 - Trang 1737-1741 - 1976
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 to 3 °C,...
Larval and life-cycle patterns in echinoderms
Canadian Journal of Zoology - Tập 79 Số 7 - Trang 1125-1170 - 2001
We 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 transitions
that ...
How high is high? Using percentile thresholds to identify peak bat activity
Canadian Journal of Zoology - Tập 93 Số 4 - Trang 307-313 - 2015
Passive 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”. We prop...
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