Articulation and growth of skeletal elements in balanid barnacles (Balanidae, Balanomorpha, Cirripedia).

ABSTRACT: The morphology and ultrastructure of the shells of two balanid species have been examined, paying special attention to the three types of boundaries between plates: (i) radii-parietes, (ii) alae-sheaths, and (iii) parietes-basal plate. At the carinal surfaces of the radii and at the rostral surfaces of the alae, there are series of crenulations with dendritic edges. The crenulations of the radius margins interlock with less prominent features of the opposing paries margins, whereas the surfaces of the longitudinal abutments opposing the ala margins are particularly smooth. The primary septa of the parietes also develop dendritic edges, which abut the internal surfaces of the primary tubes of the base plates. In all cases, there are chitino-proteinaceous organic membranes between the abutti

SUBMITTER: Checa AG 

PROVIDER: S-EPMC6774972 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature