Andreas Hejnol

Nov 19, 2024 | cell.com | Andreas Hejnol

KeywordstardigradesmoltingecdysisecdysoneEcdysozoamolting evolutionarthropod brain evolutionResultsMolting is a defining feature of the Ecdysozoa, and its molecular regulation has been well characterized in pancrustaceans (Figure 1A).3,4,5,12,13,14,15,16 Upon neural control (i.e., biological clock and growth monitoring), prothoracicotropic hormone (PTTH) is secreted from the corpora allata (CA) to stimulate the prothoracic gland (PG) to synthesize ecdysteroid (Ecd) in hexapods.

Jan 31, 2024 | cell.com | Andreas Hejnol

AbstractWhere are the front and back ends in a sea star? Formery et al. recently tackled this long-standing mystery using state-of-the-art molecular tools, leading them to suggest that a sea star may be constructed from components that, in other animals, would constitute only the head. Main textWhen observing your pet, whether it is a bird, cat, or dog, identifying the anterior or front end is straightforward.

Jun 23, 2023 | frontiersin.org | Vinnere Pettersson |Iker Irisarri |Andreas Hejnol |Joel Vizueta

1 IntroductionAccess to a growing number of high-quality genomes from non-model animal species has helped us understand the origin of key evolutionary novelties (Albertin et al., 2015; Dunwell et al., 2017; Rubin et al., 2019). However, small yields of extracted DNA is a limiting factor in genome sequencing of small animals, also when using whole-body extractions.