Zobrazeno 1 - 10
of 10
pro vyhledávání: '"E. B. Hartwick"'
Autor:
E. B. Hartwick, Francis Juanes
Publikováno v:
Ecology. 71:744-758
We investigate prey size selection by Cancer magister, a decapod crustacean, feeding on Protothaca stamina, a hard-shelled venerid clam, and test predictions of the optimal diet model using three different currencies. We also evaluate the effect of c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::67131c33f1adeafd4891a45812803f9b
https://doi.org/10.2307/1940327
https://doi.org/10.2307/1940327
Publikováno v:
Canadian Journal of Zoology. 65:2097-2104
Population characteristics of Gnorimosphaeroma insulare (Isopoda: Sphaeromatidae) were investigated in three habitats within the Squamish estuary, British Columbia: a log debris area, an embankment along the perimeter of a Carex lyngbyei marsh, and a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::113efa23bc6fef4a3a009aa9c5bd9af9
https://doi.org/10.1139/z87-321
https://doi.org/10.1139/z87-321
Autor:
E. B. Hartwick, S. M. C. Robinson
Publikováno v:
Journal of Zoology. 209:559-572
In total, 211 octopuses were tagged and 87 (41·2%) of these were recaptured, some up to eight times for a total of 184 recaptures. Octopuses ranged in wet weight from 1·6 to 20 kg and the sex ratio was skewed towards females. No difference was foun
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7819785019458d460e8c2bf9354ca7f5
https://doi.org/10.1111/j.1469-7998.1986.tb03611.x
https://doi.org/10.1111/j.1469-7998.1986.tb03611.x
Autor:
J. R. Brown, E. B. Hartwick
Publikováno v:
Aquaculture Research. 19:109-126
A habitat suitability index (HSI) model for suspended tray culture of the Pacific oyster, Crassostrea gigas Thunberg, was constructed from existing information in the literature on oyster-environment relationships. In the model, biophysical data are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eaf50440824114e2c800b255a9d527b8
https://doi.org/10.1111/j.1365-2109.1988.tb00414.x
https://doi.org/10.1111/j.1365-2109.1988.tb00414.x
Autor:
E. B. Hartwick
Publikováno v:
Canadian Journal of Zoology. 54:142-155
This study examines the foraging of black oyster catchers, Haematopus bachmani Audubon, in relation to a recent model of optimal foraging proposed by Royama in 1970. Diet is determined for three different feeding situations. Values were obtained for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::31706943db0054e94820b58359a4dfca
https://doi.org/10.1139/z76-015
https://doi.org/10.1139/z76-015
Publikováno v:
The Canadian Entomologist. 109:129-136
Camponotus pennsylvanicus(De Geer) workers concentrate their foraging efforts in the vicinity of a new food source. Experiments with artificial “trees” confirm that these ants lay chemical trails when they locate food and under other circumstance
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5947045a01b6382ab0f3dd9ce03ca48f
https://doi.org/10.4039/ent109129-1
https://doi.org/10.4039/ent109129-1
Publikováno v:
Journal of Zoology. 214:491-503
Octopus dofleini (Wulker) drills holes in mollusc shells, enabling it to introduce venom. Boreholes in the bivalve Saxidomus giganteus (Deshayes) were generally irregular. Thick shells were more likely to have incomplete boreholes, and the diameter o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d2d463972020baff4acdf3585145daf6
https://doi.org/10.1111/j.1469-7998.1988.tb03755.x
https://doi.org/10.1111/j.1469-7998.1988.tb03755.x
Publikováno v:
Journal of the Fisheries Research Board of Canada. 35:1492-1495
All Octopus dofleini martini were removed from a study area in Clayoquot Sound, B.C., during a 6-wk period, and they and their dens were measured. There was an exponential relation between octopus size and the size of den it occupied. In addition, sm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8cab712ca67f5e9f6abccc145a86fe26
https://doi.org/10.1139/f78-235
https://doi.org/10.1139/f78-235
Publikováno v:
Marine Biology. 82:65-72
Octopus dofleini (Walker) is a common inhabitant of shallow subtidal communities in the Northeast Pacific. The abundances of octopuses at two sites monitored since 1977 have fluctuated greatly during this period. The populations reached high abundanc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0e28d2bf92497a9522df21689a8cc4ab
https://doi.org/10.1007/bf00392764
https://doi.org/10.1007/bf00392764
Publikováno v:
Marine Behaviour and Physiology. 5:193-200
Shells found around the dens of Octopus dofleini were examined for indications of handling methods used by the predators. The octopus attacks gastropod and bivalve prey by drilling, breaking and pulling apart. The size of the prey does not seem to de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::09c0c0a2a340efcd185aeb69ff43f8ad
https://doi.org/10.1080/10236247809378535
https://doi.org/10.1080/10236247809378535