Reposted by Gustavo SanchezOlivia V. Ambrogio (she/her) @squidfan.bsky.social · 07/06/2026I had forgotten about this drawing 🐡 8458116
Reposted by Gustavo SanchezChema Martin @chemamd.bsky.social · 19/05/2026🚨 We discovered a new mode of Hox gene regulation in annelids! 🪱 A distal enhancer acts as a "global control region", lifting Hox genes from Polycomb repression. This is reminiscent of Hox gene control in vertebrates, but the two modes likely evolved convergently. www.biorxiv.org/content/10.6... 313655
Reposted by Gustavo SanchezPável Matos @pavelmatosm.bsky.social · 30/04/2026Please share: last week to apply for a PhD position on comparative and population genomics in high elevation butterflies 🦋 0811
Reposted by Gustavo SanchezS.S. Julian @octopolis.bsky.social · 24/04/2026Did I have many important things to do this afternoon? Yes. Did I spend it drawing Nanimoteuthis haggarti? Also yes. 🐙🦑 #sciart 823070
Reposted by Gustavo SanchezNature Portfolio @natureportfolio.nature.com · 15/04/2026An analysis in Nature Health reveals spatial patterns of pesticide exposure and liver tissue-derived molecular signatures across Peru, establishing links between pesticide usage and cancer insurgence at the national scale. go.nature.com/41hOBAK 🧪 23514
Reposted by Gustavo SanchezOIST (Okinawa Institute of Science and Technology) @oistedu.bsky.social · 31/03/2026Limited fossil records and genomic information has made it difficult to determine the evolutionary history of squid and cuttlefish, until now. Published in @natecoevo.nature.com, @cephagus.bsky.social and team identify the ‘long fuse’ that led to today’s diversity: www.oist.jp/news-center/...oist.jp100 million years ago, an ‘evolutionary fuse’ was lit in the deep ocean, sparking squid diversificationNew evolutionary mapping suggests deep sea origins and mass extinction triggered diversification of modern squid and cuttlefish. 003
Reposted by Gustavo SanchezNicholas Bellono @nbellono.bsky.social · 02/04/2026Pablo Villar et al discover male octopus mating arms are sensory organs used to find females, navigate internally to the oviduct & deliver sperm. From behavior to structure, these findings offer a framework for how sensory systems shape reproduction & species barriers www.science.org/doi/10.1126/... 59331
Gustavo Sanchez @cephagus.bsky.social · 30/03/2026This work would not have been possible without an amazing team of collaborators, including @cefafalopodo.bsky.social and many others. Special thanks as well to @sangerinstitute.bsky.social for sequencing additional genomes used in this study through the Aquatic Symbiosis project. /8 141
Gustavo Sanchez @cephagus.bsky.social · 30/03/2026The siphuncle of the ram’s horn squid does more than regulate chamber fluid for buoyancy; it also expresses genes involved in biomineralization, shell maintenance, and matrix remodeling, which may explain the persistence of this species and its shell, reminiscent of extinct ancestors. /7 131
Gustavo Sanchez @cephagus.bsky.social · 30/03/2026Their internal shells retain signatures of these transitions, from retention to gradual reduction, convergence, and ultimately loss in shallow-water lineages. /6 131
Gustavo Sanchez @cephagus.bsky.social · 30/03/2026Our analyses further suggest that decapodiforms originated through a rapid mid-Cretaceous diversification from deep-sea oceanic ancestors, with some orders later transitioning and diversifying in coastal and shallow-water habitats only after the K–Pg boundary /5 131
Gustavo Sanchez @cephagus.bsky.social · 30/03/2026We also reveal a novel relationship among decapodiforms; they are divided into two major clades, a coastal and shallow-water clade (Sepiida, Myopsida, Idiosepiida, and Sepiolida; Corneata) and an open-ocean clade (Oegopsida and Spirulida; Acorneata). /4 131
Gustavo Sanchez @cephagus.bsky.social · 30/03/2026We found that lineages often placed as early-diverging ( pygmy and bobtail squid) are fast evolving. In pygmy squid, this is reflected in extensive chromosomal rearrangements affecting ~half of the chromosome set, despite the broad chromosomal conservation observed across other decapodiforms(n=46)/3 131
Gustavo Sanchez @cephagus.bsky.social · 30/03/2026By sequencing key genomes, including the pygmy squid I. pygmaeus, the Japanese flying squid T. pacificus, and the enigmatic ram’s horn squid S. spirula, and combining them with additional genomic resources; we address a long-standing debate over the relationships among decapodiform orders /2 131
Gustavo Sanchez @cephagus.bsky.social · 30/03/2026Our new paper on squid and cuttlefish evolution is out in @natecoevo.nature.com : www.nature.com/articles/s41... /1nature.comRapid mid-Cretaceous diversification of squid and cuttlefish preceded radiation into coastal niches - Nature Ecology & EvolutionPhylogenomic analyses of newly sequenced and published decapodiform cephalopods separate open-ocean and coastal shallow-water clades, following rapid cladogenesis from the mid-Cretaceous. 15315
Reposted by Gustavo SanchezKeishu Asada @cephwarden.bsky.social · 05/03/2026This curious worm uprooted itself from the sand like a carrot being pulled up by an invisible person, and rolled around in the current for a bit before starting to dig itself back in. You can see the sand grains slowly traveling over some mucous layer as it slowly reverses into the sand. 0288
Reposted by Gustavo SanchezKeishu Asada @cephwarden.bsky.social · 12/02/2026The so-called Pikachu nudibranch (Thecacera pacifica) going about its business 24611
