Results 21 to 30 of about 2,811 (165)

Quantifying the Speed of Chromatophore Activity at the Single-Organ Level in Response to a Visual Startle Stimulus in Living, Intact Squid [PDF]

, 2021
The speed of adaptive body patterning in coleoid cephalopods is unmatched in the natural world. While the literature frequently reports their remarkable ability to change coloration significantly faster than other species, there is limited research on ...
El-Haddad, Rita W., Chavarga, Alla, Abramov, Israel, Kloskowski, Kamil, Hadjisolomou, Stavros P.   +4 more
core   +1 more source

Nitric Oxide Mediates the Glutamate-dependent Pathway for Neurotransmission in Sepia officinalis Chromatophore Organs.

, 2010
Chromatophore organs are complex and unique structures responsible for the variety of body coloration patterns used by cephalopods to communicate and camouflage. They are formed by a pigment-contg.
d'Ischia M., Brown E. R., Fiore G., Brown E.R., Mattiello T., Palumbo A., D'ISCHIA, MARCO   +6 more
core   +2 more sources

Developmental morphology of claspers and clasper‐glands during maturation in Potamotrygon wallacei (Chondrichthyes: Potamotrygoninae)

The Anatomical Record, EarlyView.
Abstract The claspers are the copulatory organs in male elasmobranchs, responsible for directing the semen into the female cloaca (C). However, the microscopic morphology of the claspers remains poorly understood. This study describes the morphology of the claspers and clasper glands (CGs) of cururu stingray (Potamotrygon wallacei) at different ...
Matheus Samuel Cunha Braga, Grazyelle Sebrenski da Silva, Maria Inês Braga de Oliveira, Jaydione Luiz Marcon, Ruben Dario Morales Gamba   +4 more
wiley   +1 more source

MIT/TFE family transcription factors, Mitf and Tfec, redundantly promote pigment cell differentiation and retinal epithelium pigmentation in teleosts

Developmental Dynamics, EarlyView.
Abstract Background Transcription factors of the MIT/TFE family—mitfa, mitfb, and tfec—play essential roles in specifying pigment cells derived from neural crest cells in vertebrates. In teleosts, which possess multiple pigment cell types, these factors exhibit partially redundant but largely distinct functions across different pigment lineages.
James Lister, Keisuke Sugiwaka, Tetsuaki Kimura, Rieko Tanaka, Makoto Goda, Hikaru Kobayashi, Chikako Inoue, Kawilarang W. A. Masengi, Kazunori Yamahira, Kiyoshi Naruse, Satoshi Ansai, Robert N. Kelsh, Masahiko Hibi, Hisashi Hashimoto   +13 more
wiley   +1 more source

Extraocular Photoreception in Optic Lobes, Suckers, and Skin of Octopus vulgaris

Integrative Zoology, EarlyView.
Evidence of extra‐ocular photoreception in Octopus vulgaris (a) Diagram of the O. vulgaris different tissues considered: SPB, sucker proximal big; SPL, sucker proximal large; SM, sucker medium; SD, sucker distal; SK, skin; OL, optic lobes; RT, retina; (b‐d) Gene expression analysis of Ov‐GRK1 (red), Ov‐retinochrome (green), Ov‐rhodopsin (blue) mRNA ...
Valeria Maselli, Al‐Sayed Al‐Soudy, Mariangela Norcia, Stefania Galdiero, Sara Palladino, Emanuela Cirillo, Gianluca Polese, Anna Di Cosmo   +7 more
wiley   +1 more source

Spot the difference: Turbidity‐driven plasticity and variation in spotted grunter (Pomadasys commersonnii) spot patterns

Journal of Fish Biology, EarlyView.
Abstract Animal body markings such as spots, stripes and patterns play important roles in camouflage and visual communication. This study investigated phenotypic plasticity in the spot patterns of spotted grunter Pomadasys commersonnii, an estuarine‐dependent haemulid species.
Vivienne Coetzee, Denham Parker, Stephen Lamberth, Sven Kerwath   +3 more
wiley   +1 more source

Chromatophore motor fields in the squid, Lolliguncula brevis [PDF]

, 1988
Chromatophore motoneurones in Lolliguncula brevis are known to originate in the suboesophageal lobes of the brain and to project directly to the mantle and fin through bilateral stellate ganglia and fin nerves.
Graham, P. F., Pinsker, H. M., Frank, M. M.   +2 more
core  

Crawling under the radar: Two novel Paulinella species expand knowledge about the ecology and evolution of a primary plastid‐containing amoeba lineage

Journal of Phycology, EarlyView.
Abstract The genus Paulinella represents a rare, independent case of primary endosymbiosis, providing a unique system to study the early stages of organelle evolution. Here, we expand current understanding of primary plastid endosymbiosis through the discovery and characterization of two novel photosynthetic amoebae, Paulinella marae sp. nov.
Julia Van Etten, Sungpil Han, John A. Burns, Duckhyun Lhee, Andrew C. Willoughby, Timothy G. Stephens, Erin Chille, Robin S. Sleith, Debashish Bhattacharya, Hwan Su Yoon   +9 more
wiley   +1 more source

Natural selection drove metabolic specialization of the chromatophore in Paulinella chromatophora

, 2017
Background Genome degradation of host-restricted mutualistic endosymbionts has been attributed to inactivating mutations and genetic drift while genes coding for host-relevant functions are conserved by purifying selection.
Alexander DeLuna, Roberto Olivares-Hernández, Osbaldo Resendis-Antonio, Cecilio Valadez-Cano, Luis Delaye   +4 more
core   +1 more source

Hierarchical Assembly as a Design Principle: Structure–Property Relationships Linking Biological Architectures to Functional Aggregate Materials

Aggregate, Volume 7, Issue 9, September 2026.
Biological function arises from aggregates rather than from molecules. Comparing biomimetic systems on a common basis reveals three transferable design rules governing hierarchical assembly, interfacial gradients, and stimulus‐coupled anisotropy, and identifies self‐healing and single‐step multiscale integration as properties that do not transfer to ...
Nafeesa Sarfraz, Sadaf Bibi, Muhammad Ibrar Ahmed, Jawad Hussain, Shahid Iqbal, Imran Mahmood Khan, Ajayan Vinu, Ibrahim Khan   +7 more
wiley   +1 more source