The strengths and limitations of a Bayesian state-space modelling framework are investigated for a De Lury depletion model that accommodates two recruitment pulses per year. The framework was applied to the Moroccan fishery for common octopus (Octopus vulgaris) between 1982 and 2002. To allow identifiability, natural mortality (M ) and the recruitment rhythm were fixed, and the variance of both...

The common octopus, Octopus vulgaris, is a very important demersal fishery resource targeted, among other fleets, by freezer bottom-trawlers in the Mauritanian Economic Exclusive Zone (MEEZ). From August 2010 to September 2011, total of 1696 octopuses caught MEEZ where analysed. Many organisms trapped into octopuses’ mantle were found and identified, which are jointly swept while trawling catch...

The common octopus is the most demanded cephalopod species for human consumption. Despite important advances realized recently, main bottleneck commercial production of octopus, Octopus vulgaris , mass mortality paralarvae in first 15–20 days post-hatching (dph), with responsible factors still unknown. Thus, identification limiting culture is, therefore, crucial their aquaculture. This study in...

Search engines are important but generally far from ideal tools of the World Wide Web (WWW). Many researchers therefore prefer to use meta-brokers to construct multi-search engines (MSE). However, these have no uniform programming interfaces, which makes tying them with other search engines dicult. Moreover, for an application that needs a search service capability, querying them is dicult. T...

This paper presents a platform named Octopus that facilitates the building and execution of mobile agent based applications. It presents the key ideas of how agents embed the computational task and how they cooperate to find the solution. The Octopus is presented with its key mechanisms used to sustain and execute the agents. The cornerstones of the Octopus design are described in detail, givin...

The octopus arm presents peculiar features, like the capability of bending in all directions, producing fast elongations, and varying its stiffness. Such features are very attractive from a robotics point of view. In the octopus, these unique motor capabilities are given by the peculiar muscular structure of the octopus arm, named muscular hydrostat, that creates a sort of antagonistic mechanis...

In this study, we focus on the intelligent behavior of an octopus and describe the development of a flexible manipulator. By using the developed manipulator, we show that grasping behaviors similar to those of an octopus can be realized by the dynamics of the body without computation in its brain. Keywords-flexible manipulator; octopus; many degrees of freedom; grasping.