نتایج جستجو برای: common octopus

تعداد نتایج: 683795  

Journal: :The Journal of experimental biology 2015
M Desmond Ramirez Todd H Oakley

Cephalopods are renowned for changing the color and pattern of their skin for both camouflage and communication. Yet, we do not fully understand how cephalopods control the pigmented chromatophore organs in their skin and change their body pattern. Although these changes primarily rely on eyesight, we found that light causes chromatophores to expand in excised pieces of Octopus bimaculoides ski...

Journal: :International Journal of Life Cycle Assessment 2022

Abstract Purpose Common octopus is the fishing species with highest economic revenue in Portugal, and its consumption per capita very high. The majority of catches come from small-scale fleet pots traps. aims were to assess main environmental impacts common octopus’ fishery traps Algarve region, where most important size landings volume occurs, find if there are significant differences between ...

Journal: :Journal of neurophysiology 2002
Michael J Ferragamo Donata Oertel

Whole cell patch recordings in slices show that the probability of firing of action potentials in octopus cells of the ventral cochlear nucleus depends on the dynamic properties of depolarization. Octopus cells fired only when the rate of rise of a depolarization exceeded a threshold value that varied between 5 and 15 mV/ms among cells. The threshold rate of rise was independent of whether depo...

Journal: :The Biochemical journal 2006
Atsuhiro Kanda Toshio Takahashi Honoo Satake Hiroyuki Minakata

GnRH (gonadotropin-releasing hormone) plays a pivotal role in the regulation of reproduction in vertebrates through interaction with a specific receptor. Previously, we isolated a GnRH homologue, oct-GnRH, from the common octopus (Octopus vulgaris). In the present study, we have identified a GnRH receptor (oct-GnRHR) specific for oct-GnRH from Octopus brain. Oct-GnRHR includes domains and motif...

Journal: :Genome research 2004
Atsushi Ogura Kazuho Ikeo Takashi Gojobori

Although the camera eye of the octopus is very similar to that of humans, phylogenetic and embryological analyses have suggested that their camera eyes have been acquired independently. It has been known as a typical example of convergent evolution. To study the molecular basis of convergent evolution of camera eyes, we conducted a comparative analysis of gene expression in octopus and human ca...

Journal: :Journal of Venomous Animals and Toxins including Tropical Diseases 2014

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