Cannibalistic behavior of octopus (Octopus vulgaris) in the wild.
نویسندگان
چکیده
منابع مشابه
Cutaneous Respiration in Octopus Vulgaris
The skin of Octopus vulgaris consumes considerable quantities of oxygen in vitro, averaging 4.55×10−5±1.80×10−5 ml mm−2 h−1 (mean ± S.D.), if a flow is maintained over the skin sample (N=32). The consumption is higher still in vivo, 11.36×10−5±2.73×10−5 ml mm−2 h−1 (N=8), suggesting an additional net import of oxygen through the skin when the blood system is intact. If a substantial boundary la...
متن کاملObservational Learning in Octopus vulgaris.
Untrained Octopus vulgaris (observers) were allowed to watch conditioned Octopus(demonstrators) perform the task of selecting one of two objects that were presented simultaneously and differed only in color. After being placed in isolation, the observers, in a similar test, consistently selected the same object as did the demonstrators. This learning by observation occurred irrespective of the ...
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The Octopus vulgaris farming is impaired by the high mortality of the paralarvae during the first month of life. Several factors have been investigated in this regard, but no data exist on the body surface mucus, which represents the interface with the outside environment. This study included morphometric analysis and glycoconjugates characterization of skin mucus in reared Octopus vulgaris par...
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The common octopus, (Octopus vulgaris Cuvier, 1797) is widely distributed through the world. It represents an important resource with high economic value. It is exploited by trawl and by other gears such as trammel net, pots and it is also captured by diving. Although the multitude of assessment techniques, few fisheries cephalopods were well managed. In Tunisia, common octopus (Octopus vulgari...
متن کاملProgesterone Affects Vitellogenesis in Octopus vulgaris
The electrophoretic analysis of egg yolk proteins of the mollusc Octopus vulgaris by both SDSand nativePAGE, showed two different patterns that mirror the two main periods characterizing the reproductive cycle of the female of Octopus vulgaris: the non-vitellogenic period (October-February) and the vitellogenic period (March-July). Since different levels of progesterone also characterize these ...
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ژورنال
عنوان ژورنال: Journal of Comparative Psychology
سال: 2014
ISSN: 1939-2087,0735-7036
DOI: 10.1037/a0036883