The brain structure and the neural network features of the diurnal cuttlefish Sepia plangon

Chung, Wen-Sung; López-Galán, Alejandra; Kurniawan, Nyoman D.; Marshall, N. Justin

doi:10.1016/j.isci.2022.105846

Cited by 6 publications

(9 citation statements)

References 89 publications

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“…Independent of this discussion, the question for links between the neural equipment of the arms, overall neuroanatomy, and the (palaeo-) environment arises. Such links were found by, e.g., Chung et al, ( 2022a , 2022b ) and are discussed here for extinct coleoids.…”

Section: Introductionsupporting

confidence: 84%

“…1), Octopus after Haeckel ( 1904 : pl. 54) and Chung et al, ( 2022a , 2022b : fig. 6, 7), Proteroctopus after Kruta et al, ( 2016 ), Vampyronassa after Rowe et al, ( 2022 : fig.…”

Section: Discussionmentioning

confidence: 94%

“…Chung et al, ( 2022a , 2022b ) discovered relationships between brain structure in modern cephalopods and habitat as well as habit. According to these authors, octobrachians with subdivided optic lobes and 7-gyrus vertical lobes are characteristically diurnal species that inhabit the photic zone, while nocturnal species have bean-shaped optic lobes and 5-gyrus vertical lobes (Chung et al, 2022a ).…”

Section: Discussionmentioning

confidence: 99%

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‘Arm brains’ (axial nerves) of Jurassic coleoids and the evolution of coleoid neuroanatomy

Klug,

Hoffmann,

Tischlinger

et al. 2023

Swiss J Palaeontol

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Although patchy, the fossil record of coleoids bears a wealth of information on their soft part anatomy. Here, we describe remains of the axial nerve cord from both decabrachian (Acanthoteuthis, Belemnotheutis, Chondroteuthis) and octobrachian (Plesioteuthis, Proteroctopus, Vampyronassa) coleoids from the Jurassic. We discuss some hypotheses reflecting on possible evolutionary drivers behind the neuroanatomical differentiation of the coleoid arm crown. We also propose some hypotheses on potential links between habitat depth, mode of life and the evolution of the Coleoidea.

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Section: Introductionsupporting

confidence: 84%

“…1), Octopus after Haeckel ( 1904 : pl. 54) and Chung et al, ( 2022a , 2022b : fig. 6, 7), Proteroctopus after Kruta et al, ( 2016 ), Vampyronassa after Rowe et al, ( 2022 : fig.…”

Section: Discussionmentioning

confidence: 94%

Section: Discussionmentioning

confidence: 99%

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‘Arm brains’ (axial nerves) of Jurassic coleoids and the evolution of coleoid neuroanatomy

Klug,

Hoffmann,

Tischlinger

et al. 2023

Swiss J Palaeontol

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“…The taxon belongs to Lophotrochozoa (i.e., a protostome animal), and thus it is very distant from vertebrates. Nevertheless, octopuses are known for possessing the largest nervous system among invertebrates in terms of the number of cells and body-to-brain size ( Young, 1963 ; Packard and Albergoni, 1970 ; Giuditta et al, 1971 ; Packard, 1972 ), as well as their intricate neural network and manifold cellular complexity ( Young, 1932 ; Shigeno and Ragsdale, 2015 ; Chung et al, 2022 ; Styfhals et al, 2022 ; Chung et al, 2023 ), with remarkable functional analogies to vertebrates ( Shigeno et al, 2015 , 2018 ). Octopus vulgaris has also served as an organism of study for the identification of the neural correlates of learning and memory and the search for a model of the brain ( Young, 1964 ; Kandel, 1979 ; review in: Hochner et al, 2006 ; Borrelli and Fiorito, 2008 ; Marini et al, 2017 ).…”

Section: Introductionmentioning

confidence: 99%

Transcriptome-wide selection and validation of a solid set of reference genes for gene expression studies in the cephalopod mollusk Octopus vulgaris

Imperadore,

Cagnin,

Allegretti

et al. 2023

Front. Mol. Neurosci.

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Octopus vulgaris is a cephalopod mollusk and an active marine predator that has been at the center of a number of studies focused on the understanding of neural and biological plasticity. Studies on the machinery involved in e.g., learning and memory, regeneration, and neuromodulation are required to shed light on the conserved and/or unique mechanisms that these animals have evolved. Analysis of gene expression is one of the most essential means to expand our understanding of biological machinery, and the selection of an appropriate set of reference genes is the prerequisite for the quantitative real-time polymerase chain reaction (qRT-PCR). Here we selected 77 candidate reference genes (RGs) from a pool of stable and relatively high-expressed transcripts identified from the full-length transcriptome of O. vulgaris, and we evaluated their expression stabilities in different tissues through geNorm, NormFinder, Bestkeeper, Delta-CT method, and RefFinder. Although various algorithms provided different assemblages of the most stable reference genes for the different kinds of tissues tested here, a comprehensive ranking revealed RGs specific to the nervous system (Ov-RNF7 and Ov-RIOK2) and Ov-EIF2A and Ov-CUL1 across all considered tissues. Furthermore, we validated RGs by assessing the expression profiles of nine target genes (Ov-Naa15, Ov-Ltv1, Ov-CG9286, Ov-EIF3M, Ov-NOB1, Ov-CSDE1, Ov-Abi2, Ov-Homer2, and Ov-Snx20) in different areas of the octopus nervous system (gastric ganglion, as control). Our study allowed us to identify the most extensive set of stable reference genes currently available for the nervous system and appendages of adult O. vulgaris.

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“… 20 Their expanded and highly centralized CNS allows cephalopods to perform complex behaviors, including various flexible predation behaviors. 15 , 21 , 22 …”

Section: Introductionmentioning

confidence: 99%

Switching by cuttlefish of preying tactics targeted at moving prey

Jiun-Shian Wu,

Chiao

2023

iScience

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The brain structure and the neural network features of the diurnal cuttlefish Sepia plangon

Cited by 6 publications

References 89 publications

‘Arm brains’ (axial nerves) of Jurassic coleoids and the evolution of coleoid neuroanatomy

‘Arm brains’ (axial nerves) of Jurassic coleoids and the evolution of coleoid neuroanatomy

Transcriptome-wide selection and validation of a solid set of reference genes for gene expression studies in the cephalopod mollusk Octopus vulgaris

Switching by cuttlefish of preying tactics targeted at moving prey

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