Gooseneck barnacle (Pollicipes pollicipes) life cycle

Description:

Description: English: Pollicipes pollicipes (or gooseneck barnacle) life cycle. Note the fundamental structural differences among the life history stages. (A) Nauplius stage 1. (B) Nauplius stage 6. (C) Cyprid, insert showing magnified view of the third antennal segment used for permanent attachment to the substratum surface. (D) Juvenile adult. (E) Mature adult, insert showing a dissected adult specimen with 6 cirri or “feeding legs,” the penis, and the gut. (F) P. pollicipes voucher and genome sequencing specimens. Asterisk indicates genome hologenophore specimen (USNM 1622609). Date: 12 March 2022. Source: CC-BY OA article: Chromosome-level genome assembly, annotation, and phylogenomics of the gooseneck barnacle Pollicipes pollicipes, GigaScience, Volume 11, 2022, giac021, https://doi.org/10.1093/gigascience/giac021. Author: James P Bernot, Pavel Avdeyev, Anton Zamyatin, Niklas Dreyer, Nikita Alexeev, Marcos Pérez-Losada, Keith A Crandall,.