Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Roland C. Anderson"'
Autor:
Daniel Blustein, Roland C. Anderson
Publikováno v:
American Malacological Bulletin. 34:61-64
Octopus localize their drill holes on prey but it remains unclear how this is accomplished. Asymmetrical prey such as snails and crabs would provide cues to the octopus but the nominally symmetrical cowry presents a unique drill hole localization sce
Autor:
David Scheel, Roland C. Anderson
Publikováno v:
American Malacological Bulletin. 30:267-279
We examined variation in dietary specialization of Enteroctopus dofleini (Wulker, 1910), the giant Pacific octopus, from Puget Sound to the Aleutian Islands, as represented in midden remains. Dietary specialization was measured from midden contents a
Autor:
R. L. Shimek, Roland C. Anderson
Publikováno v:
American Malacological Bulletin. 32:220-222
There are several references to octopuses eating birds but few give details of the encounters. Here we document the details of seven instances (six Enteroctopus dofleini (Wulker, 1910) and one Octopus cf. insularis Leite and Haimovici, 2008) of octop
Autor:
Shawn E. Larson, Roland C. Anderson
Publikováno v:
Journal of Aquatic Animal Health. 22:152-157
The captive husbandry of giant Pacific octopuses Enteroctopus dofleini is well understood, but their endocrine signatures are not well documented. The major vertebrate reproductive hormones--estrogen, progesterone, and testosterone--and the stress-re
Publikováno v:
Journal of Applied Animal Welfare Science. 13:261-272
This study exposed 8 Enteroctopus dofleini separately to 2 unfamiliar individual humans over a 2-week period under differing circumstances. One person consistently fed the octopuses and the other touched them with a bristly stick. Each human recorded
Publikováno v:
Marine Ecology Progress Series. 371:199-202
The diet of Octopus vulgaris was determined from the remains of 649 prey items gath- ered from the middens of 38 dens in a small area off the Caribbean island of Bonaire. Remains of 35 species of gastropod (19% of the total), 19 bivalves (51%) and 21
Autor:
Roland C. Anderson
Publikováno v:
International Zoo Yearbook. 26:41-48
Autor:
Roland C. Anderson, Jennifer A. Mather
Publikováno v:
Diseases of Aquatic Organisms. 75:119-129
This paper first explores 3 philosophical bases for attitudes to invertebrates, Contractar- ian/Kantian, Utilitarian, and Rights-based, and what they lead us to conclude about how we use and care for these animals. We next discuss the problems of eva
The visually arresting and often misunderstood octopus has long captured popular imagination. With an alien appearance and an uncanny intellect, this exceptional sea creature has inspired fear in famous lore and legends—from the giant octopus attac
Publikováno v:
Journal of Applied Animal Welfare Science. 5:275-283
Senescence is a normal stage of an octopus's life cycle that often occurs before death. Some of the following symptoms typify it: lack of feeding, retraction of skin around the eyes, uncoordinated movement, increased undirected activity, and white un