Composite branch construction by dual autozooidal budding modes in hornerids (Bryozoa: Cyclostomatida).
adventitious budding
exomural budding
frontal budding
hypostegal pore
polymorphic autozooids
Journal
Journal of morphology
ISSN: 1097-4687
Titre abrégé: J Morphol
Pays: United States
ID NLM: 0406125
Informations de publication
Date de publication:
06 2022
06 2022
Historique:
revised:
07
03
2022
received:
03
02
2022
accepted:
16
03
2022
pubmed:
5
4
2022
medline:
18
6
2022
entrez:
4
4
2022
Statut:
ppublish
Résumé
Horneridae (Cyclostomatida: Cancellata) is a family of marine bryozoans that forms tree-like colonies bearing functionally unilaminate branches. Colony development in this clade is not well understood. We used micro-computed tomography and scanning electron microscopy to trace zooidal budding in Hornera from the ancestrula onwards. Results show that hornerid branches are constructed by dual zooidal budding modes occurring synchronously at two separate budding sites at the growing tips. Frontal autozooids bud from a multizooidal budding lamina. Lateral autozooids bud from discrete abfrontal budding loci by "exomural budding," a previously undescribed form of frontal budding centered on hypostegal pores in interzooidal grooves on the colonial body wall. These two budding modes are integrated during primary branch morphogenesis, forming composite, developmentally bilaminate, branches. Patterns of exomural budding vary among hornerid taxa, and future studies of Cancellata taxonomy and phylogeny may benefit from morphological concepts presented here.
Identifiants
pubmed: 35373374
doi: 10.1002/jmor.21469
pmc: PMC10234448
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
783-804Informations de copyright
© 2022 Wiley Periodicals LLC.
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