Octopus cells in the posteroventral cochlear nucleus of mammals detect the coincidence of synchronous firing in populations of auditory nerve fibers and convey the timing of that coincidence with great temporal precision. Earlier recordings in current clamp have shown that two conductances contribute to the low input resistance and therefore to the ability of octopus cells to encode timing prec...

The synthesis of yolk proteins can conveniently be studied in Octopus where removal of the subpedunculate lobe from the brain causes secretion of a gonadotropin by the optic glands and results in precocious sexual maturation (Wells & Wells, 1959). Maturing animals can thus be prepared as needed. The normal reproductive pattern of the female is a further advantage. All the ova from any single an...

Abstract Octopus is a commodity that has important economic value and high export value. Gugop Distric one of the producers octopus in form fresh products processed developed by Kube Mangat. It said species Indonesia are dominated cyanea , but there no scientific certainty for type this village. This study aimed to identify morphometric analysis octopus. research conducted May-July 2022. Inform...

Karyotype analysis was carried out on gill cells of three species of octopods using a conventional air-drying method. The karyotype results showed that all the three species have the same diploid chromosome number, 2n=60, but with different karyograms as 2n=38M+6SM+8ST+8T, FN (fundamental number)=104 (Cistopus chinensis Zheng et al., 2012), 2n=42M+6SM+4ST+8T, FN=108 (Octopus minor (Sasaki, 1920...

Specimens of Octopus pallidus and 0. australis were trained to discriminate vertical from horizontal rectangles, vertical from horizontal gratings, and vertical and horizontal gratings from uniform grey. In the discriminations that involved gratings a conditional simultaneous discrimination procedure was used, in which the two stimuli to be discriminated were presented stationary at the two end...

“ Octopus ” rubescens Berry, 1953 is an octopus of temperate waters the western coast North America. This paper presents first record O. from tropical Mexican Pacific. Twelve octopuses were studied; 10 collected in tide pools five localities and two mature males caught by fishermen Oaxaca. We used morphometric characters anatomical features digestive tract to identify specie...