A phylogeny of extant coleoid cephalopods with brain data

2024 · doi:10.1101/2024.04.29.591691
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This paper compiled a composite phylogeny of extant coleoid cephalopods (octopuses, squid, and cuttlefish), using topological placements from prior phylogenetic studies plus mitochondrial and nuclear gene sequences from GenBank. The authors estimated branch lengths and focused on the subset of species (~79) with adult specimens and recorded measures of central nervous system size drawn from various sources. The resulting tree is presented as a resource for comparative analyses of cephalopod brain evolution in a forthcoming paper. The paper does not explicitly discuss endometriosis or adenomyosis; it was included in the corpus via a keyword match in the upstream search index.

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Abstract

Extant coleoid cephalopods include over 800 species of octopuses, squid, and cuttlefish, which have drawn scientific and public interest for their complex behavior and cognition. Of these, approximately 10% (79) species have adult specimens with recorded measures of central nervous system size distributed across various sources. Here, we use a combination of topological placements from previous phylogenetic studies, along with mitochondrial and nuclear gene sequences obtained from GenBank, to build a composite phylogenetic tree with estimated branch lengths of all species with available brain measurements. This phylogeny is used for analyses in a forthcoming paper on cephalopod brain evolution, and ideally will be of use to other researchers interested in conducting comparative studies of coleoid cephalopod brains.
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Abstract Extant coleoid cephalopods include over 800 species of octopuses, squid, and cuttlefish, which have drawn scientific and public interest for their complex behavior and cognition. Of these, approximately 10% (79) species have adult specimens with recorded measures of central nervous system size distributed across various sources. Here, we use a combination of topological placements from previous phylogenetic studies, along with mitochondrial and nuclear gene sequences obtained from GenBank, to build a composite phylogenetic tree with estimated branch lengths of all species with available brain measurements. This phylogeny is used for analyses in a forthcoming paper on cephalopod brain evolution, and ideally will be of use to other researchers interested in conducting comparative studies of coleoid cephalopod brains. Competing Interest Statement The authors have declared no competing interest. Footnotes Revised authorship; added results from ancestral state reconstruction

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last seen: 2026-05-20T01:45:00.602351+00:00