Results 171 to 180 of about 47,689 (231)

GnRH in the brain and ovary of Sepia officinalis

Peptides, 2009
We have cloned from brain, ovary and eggs of the cephalopod Sepia officinalis a 269-bp PCR product, which shares 100% sequence identity with the open reading frame of GnRH isoform isolated from Octopus vulgaris. Similar to Octopus, this sequence encodes a peptide that is organized as a preprohormone from which, after enzymatic cleavage, a dodecapeptide
C. DI CRISTO, E. DE LISA, DI COSMO, ANNA
openaire   +3 more sources

Sperm nucleomorphogenesis in the cephalopod Sepia officinalis

Tissue and Cell, 2007
Sperm nucleomorphogenesis in the cephalopod Sepia officinalis is the product of the interaction between perinuclear microtubules and condensing chromatin. This interaction occurs during spermiogenesis and is established through the nuclear membrane. As in other cephalopod species, the perinuclear microtubules are transient structures. In the case of S.
F, Martínez-Soler, K, Kurtz, M, Chiva
openaire   +2 more sources

CanSepia officinalisL. be reared on artificial food?

Marine and Freshwater Behaviour and Physiology, 1991
To evaluate the feasibility of feeding Sepia officinalis on artificial food, a food pellet consisting of Palaemon serratus powder and alginate as binding agent was developed and tested.
Castro, Bernardino G.
exaly   +2 more sources

Natural melanin nanoparticles (MNPs) extracted from Sepia officinalis: A cost-effective, chemo-photothermal, synergistic nanoplatform for osteosarcoma treatment.

Colloids and Surfaces B: Biointerfaces
Osteosarcoma conventional chemotherapeutics are known for their side effects, limited options, and induction of drug resistance. This creates the need to develop new therapeutics capable of effectively destroying cancer cells with low toxicity, improving
Mariana Caldas, A. I. Barbosa, Mrinal Bhattacharya, Rui L. Reis, V. Correlo   +4 more
semanticscholar   +1 more source

Chitin and Chitosan from Sepia officinalis: Extraction and Characterization Study

Menba Kastamonu Üniversitesi Su Ürünleri Fakültesi Dergisi
A cuttlebone sourced from Sepia officinalis, acquired from the Iskenderun fish market, served as the raw material for the extraction of chitin (CT) and chitosan (CS).
Erkan Uğurlu, Ö. Duysak
semanticscholar   +1 more source

Arm regeneration in two species of cuttlefish Sepia officinalis and Sepia pharaonis

Invertebrate Neuroscience, 2013
To provide quantitative information on arm regeneration in cuttlefish, the regenerating arms of two cuttlefish species, Sepia officinalis and Sepia pharaonis, were observed at regular intervals after surgical amputation. The third right arm of each individual was amputated to ~10-20 % starting length.
Jedediah, Tressler, Francis, Maddox, Eli, Goodwin, Zhuobin, Zhang, Nathan J, Tublitz   +4 more
openaire   +2 more sources

Learning performances and aging in cuttlefish (Sepia officinalis)

Experimental Gerontology, 1992
The use of an associative learning protocol with negative reinforcement allowed us to compare the performances of three groups of animals: young, middle-aged, and senescent. Statistical analysis of the results does not enable us to assert that a significant difference exists between the learning speeds of young and senescent animals.
R, Chichery, M P, Chichery
openaire   +2 more sources

The visual attack of the cuttlefish, Sepia officinalis

Animal Behaviour, 1968
Abstract 1. 1. The attack by Sepia on prawns comprises three phases: attention, positioning and seizure . 2. 2. In attention there are colour changes, erection of the first and second pair of arms and movements of the eyes and head. The whole animal turns (by up to 180 °) so that the prey comes to lie on a forward extension of the body ...
openaire   +2 more sources

On The Respiratory Flow in the Cuttlefish Sepia Officinalis

Journal of Experimental Biology, 1994
ABSTRACT The respiratory flow of water over the gills of the cuttlefish Sepia officinalis at rest is produced by the alternate activity of the radial muscles of the mantle and the musculature of the collar flaps; mantle circular muscle fibres are not involved. Inspiration takes place as the radial fibres contract, thinning the mantle and
Q, Bone, E, Brown, G, Travers
openaire   +2 more sources

The quaternary structure of Sepia officinalis haemocyanin

Biochimica et Biophysica Acta (BBA) - Protein Structure and Molecular Enzymology, 1986
Abstract The haemocyanin (Hc) of Sepia officinalis is constituted of ten identical subunits ( M r about 390 000), which consist of eight functional (dioxygen-binding) units, designated by the letters a–h . A model is proposed for the quaternary structure of this HC, based on immuno-electron microscopy of whole molecules and on morphological ...
Trijntje Wichertjes, Constant Gielens, Wilma G. Schutter, Gisèle Préaux, René Lontie, Ernst F.J. van Bruggen   +5 more
openaire   +3 more sources