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Publikováno v:
Canadian Journal of Zoology. 99:792-800
The movement of individuals according to the availability of resources has a fundamental effect on animal distributions. In the Pacific Northwest, Bald Eagles (Haliaeetus leucocephalus (Linnaeus, 1766)) rely heavily on scavenging opportunities during
Autor:
Magnus Wahlberg, Henrik Skov Midtiby, Henrik Dyrberg Egemose, Johanna Stedt, Sara Torres Ortiz
Publikováno v:
Ortiz, S T, Stedt, J, Midtiby, H S, Egemose, H D & Wahlberg, M 2021, ' Group hunting in harbour porpoises (Phocoena phocoena) ', Canadian Journal of Zoology, vol. 99, no. 6, pp. 511-520 . https://doi.org/10.1139/cjz-2020-0289
Cooperative hunting involves individual predators relating in time and space to each other’s actions to more efficiently track down and catch prey. The evolution of advanced cognitive abilities and sociality in animals are strongly associated with
Autor:
Gail K. Davoren, Kelsey F. Johnson
Publikováno v:
Canadian Journal of Zoology. :564-572
On the Newfoundland (Canada) foraging ground, humpback whales (Megaptera novaeangliae (Borowski, 1781)) are found associated with a dominant forage fish species, capelin (Mallotus villosus (Müller, 1776)), that experienced a population collapse in t
Autor:
Zachary H. Olson, Kelly R. Flanders, Dominique M. Mellone, Michelle N. Dufault, Kathryn A. Ono
Publikováno v:
Canadian Journal of Zoology. 99:227-234
The United States east coast population of the gray seal (Halichoerus grypus (Fabricius, 1791)) was once hunted to near extirpation, but the population has since rebounded due to protection by the Marine Mammal Protection Act of 1972. Although this p
Autor:
Arthur Anker
Publikováno v:
Canadian Journal of Zoology. 98:798-807
A new snapping shrimp, Alpheus richpalmeri sp. nov., is described based on three specimens collected in the muddy–rocky intertidal of São Tomé Island, Gulf of Guinea, tropical eastern Atlantic. The new species belongs to the Alpheus brevirostris
Publikováno v:
Canadian Journal of Zoology. 98:399-409
Fish behavior types can predict angling vulnerability, providing insights about how recreational fishing may lead to artificial trait selection. Most vulnerability studies have focused on species with active foraging strategies, and the impact of env
Autor:
Stephen P. Kirkman, O. Alejandra Vargas-Fonseca, Thibaut Bouveroux, Pierre A. Pistorius, Danielle Conry
Publikováno v:
Canadian Journal of Zoology. 97:855-865
The Indian Ocean humpback dolphin (Sousa plumbea (G. Cuvier, 1829)) is the most endangered marine mammal species in South Africa, and the overall decline of its abundance and group size may affect the social organisation of the species, potentially a
Publikováno v:
Canadian Journal of Zoology. 97:547-557
Industrial development and contaminant exposure may affect reproductive success and food quality for birds. Tree Swallows (Tachycineta bicolor (Vieillot, 1808)) nesting near oil sands development in northern Alberta (Canada) potentially experience el
Publikováno v:
Canadian Journal of Zoology. 97:464-478
Part of the western Atlantic population of leatherback turtles (Dermochelys coriacea (Vandelli, 1761)) forage in Canadian waters, where high-use areas have been identified using satellite telemetry and opportunistic sightings. Here, we use sightings
Publikováno v:
Canadian Journal of Zoology. 96:1236-1243
During the breeding season, male harbor seals (Phoca vitulina Linnaeus, 1758) produce underwater calls for sexual advertisement. The daily and seasonal timing of these calls is influenced by female availability (i.e., tidal haul-out patterns, foragin