Cephalopods and Marine Biology

Habituation-Induced Expression of Immediate Early Genes in the Octopus Brain

This study uses a habituation paradigm to show sequential activation of immediate early genes in octopus brain regions during memory formation.

Octopus can use odor plumes to find food

The paper shows octopuses use odor plumes to find food in the dark, exhibiting behaviors like upstream movement and odor-gated rheotaxis, suggesting suckers, not bilateral organs, are the primary chemosensory organs.

Mapping the nervous system of the Idiosepius hallami pygmy squid: insights from whole-animal X-ray nanotomography imaging.

The paper presents a high-resolution 3D X-ray nanotomography dataset of the pygmy squid Idiosepius hallami, mapping large-scale neural connectivity.

ERGA-BGE genome of Stigmatoteuthis arcturi Robson, 1948: the jewelled squid

The paper presents the chromosome-level genome assembly of Stigmatoteuthis arcturi, providing insights into the evolutionary biology of deep-sea squids.

CHROMAS: A Computational Pipeline to Track Chromatophores and Analyze their Dynamics

CHROMAS tracks and analyzes chromatophore dynamics from high-resolution videos of cephalopods, revealing motor control details and distributed motor units.

Evidence of play behavior in captive California Two-Spot Octopuses, Octopus bimaculoides.

The paper describes play behavior in captive California Two-Spot Octopuses to better understand their behavioral repertoire and welfare.

Neurons, Muscles, and Venom: Elucidating a Neural-to-Secretory Pathway in Cephalopod Predation

The paper characterizes the structural and neuronal organization of venom glands in cephalopods and identifies molecular mechanisms regulating venom release.

Macroscale Connectivity in the Octopus brain

The paper maps the macroscale connectivity of the octopus brain, revealing nonrandom network features similar to other species.

Climate-driven warming disrupts the symbiosis of bobtail squid Euprymna scolopes and the luminous bacterium Vibrio fischeri

This study examines how climate-driven warming affects the symbiotic relationship between the bobtail squid Euprymna scolopes and the bacterium Vibrio fischeri, finding reduced hatching success, lower survival, and diminished symbiosis capacity under higher temperatures.

Molecular and morphological circuitry of the octopus sucker ganglion

This study examines the cellular organization and molecular composition of the octopus sucker ganglion, revealing its role in local reflexes rather than as a simple relay for the axial nerve cord.

Organ structure and bacterial microbiogeography in a reproductive organ of the Hawaiian bobtail squid reveal dimensions of a defensive symbiosis

This study uses microscopy to show how the structure of a squid organ houses and deploys bacteria for egg defense.

Cuttlefish interact with multimodal 'arm wave sign' displays

This study identifies and tests a new multimodal communication display in cuttlefish, showing it involves both visual and mechanoreceptive signals.

Isolation and primary culture of Octopus vulgaris cells: Assessment of their proliferative capacity

This study isolates and cultures Octopus vulgaris cells at different life stages, assessing their viability and proliferative capacity for in vitro applications.

Ultrasound-based prediction of spawning time in females of Octopus vulgaris

This study uses ultrasound to predict spawning time in cultured and wild Octopus vulgaris by analyzing ovary volume and gonadosomatic index.

Environmental microbiomes drive chemotactile sensation in octopus

This study shows that microbiomes on ecological surfaces activate octopus chemotactile receptors to guide behavior through distinct molecular signals.

Cellular and synaptic organization of the Octopus vertical lobe

This paper examines the cellular and synaptic organization of the octopus vertical lobe, identifying unique structural and functional features compared to other associative networks.

Neuronal segmentation in cephalopod arms

This study describes the segmented neuronal organization of the octopus arm's axial nerve cord, revealing modular structure and functional implications for motor control.

Squid primary cell culture as a model system and experimental tool

This paper describes a protocol for isolating and culturing squid primary cells from various tissues and life stages to study squid biology and physiology.

Population regulation in semelparous deep-sea squid is driven by ecological conditions in surface waters and whale predation at depth

This study shows that deep-sea squid population regulation is driven by surface water conditions and predation by deep-diving whales, leading to seasonal reproductive patterns and predator facilitation.

A phylogeny of extant coleoid cephalopods with brain data

The paper constructs a composite phylogenetic tree of extant coleoid cephalopods using existing phylogenetic data and brain measurements to support future studies on brain evolution.

Three-Dimensional Molecular Atlas of Octopus Arm Neuroanatomy Highlights Spatial and Functional Complexity

This study creates a 3D molecular atlas of octopus arm neuroanatomy, revealing spatial and functional complexity in neuronal populations.

Signaling ligand heterogeneities in the peduncle complex of the cephalopod mollusc Octopus bimaculoides

The paper identifies signaling ligand heterogeneities in the octopus peduncle complex, revealing steroidogenic and neuropeptide-expressing territories within the olfactory lobe.

A chromosome-level reference genome for the common octopus, Octopus vulgaris (Cuvier, 1797)

The paper presents a chromosome-level genome assembly for the common octopus, O. vulgaris, which spans 2.8 billion basepairs and supports a karyotype of 1n=30 chromosomes.

Functional organization of visual responses in the octopus optic lobe

This study uses calcium imaging to map visual responses in the octopus optic lobe, revealing retinotopic organization and unique processing of ON/OFF stimuli.

A brain atlas of the camouflaging dwarf cuttlefish, Sepia bandensis

The paper creates a brain atlas of the dwarf cuttlefish using MRI, deep learning, and histology, identifying 32 brain regions and providing an interactive web tool for data access.

RNA recoding in cephalopods tailors microtubule motor protein function

This study identifies RNA recoding in cephalopods that enhances kinesin function in response to cold and reveals tissue-specific variants with distinct motile properties.

Molecular characterization of cell types in the squid Loligo vulgaris

This study uses single-cell transcriptomics to characterize cell types in the squid Loligo vulgaris and identifies key markers for major nervous system components.

Cell type diversity in a developing octopus brain

The paper profiles cell diversity in the paralarval octopus brain to create a cell type atlas and identifies molecular similarities between octopus and fly glial cells.

Cell types and molecular architecture of the octopus visual system

The paper presents a single-cell molecular atlas of the octopus optic lobe, identifying neuronal and non-neuronal cell types and their spatial organization.

Somatotopic organization of mechanosensory afferents in the stellate ganglion of the squid, Euprymna.

This study uses live calcium imaging to show somatotopic organization of mechanosensory afferents in the squid's stellate ganglion, revealing clusters of neurons responding to localized touch.