Figure 2. Ooecium formation. A in North-east Atlantic and Mediterranean species of the genus Buffonellaria (Bryozoa, Cheilostomata): implications for biodiversity and biogeography
Figure 2. Ooecium formation. A, colony with several ontogenetic stages of ooecium formation, in which ooecial pores are present in zooecia at the very left-hand side, but in which ooecium formation has not yet commenced. The second series of zooecia further to the right, as well as two zooecia in th...
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| Format: | Still Image |
| Language: | unknown |
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Zenodo
2008
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| Online Access: | https://dx.doi.org/10.5281/zenodo.5442719 https://zenodo.org/record/5442719 |
| Summary: | Figure 2. Ooecium formation. A, colony with several ontogenetic stages of ooecium formation, in which ooecial pores are present in zooecia at the very left-hand side, but in which ooecium formation has not yet commenced. The second series of zooecia further to the right, as well as two zooecia in the upper right-hand corner, show the earliest stages of ooecium development, in which the fold of entooecium and ectooecium shows concentric growth. In the central series of zooecia, the basal ooecium wall is completed and entooecium and ectooecium proceed to grow in a globular fashion. The intervening coelomic lumen is best visible in this stage. The frontal tabula of the entooecium is produced as the ectooecium ceases to grow, producing a central window (zooecium at centre right). Ooecium growth is then completed, a frontal avicularium is budded, and secondary calcification begins to cover the colony surface (zooecia in lower right corner). Buffonellaria muriella sp. nov., CNHM Inv.br.27, Adriatic Sea; scale bar, 200 Mm. B, close-up of the finely pitted entooecial surface. Buffonellaria antoniettae sp. nov., paratype, PMC B16.30.6.2006b, Sicily; scale bar, 20 Mm. : Published as part of Berning, Björn & Kuklinski, Piotr, 2008, North-east Atlantic and Mediterranean species of the genus Buffonellaria (Bryozoa, Cheilostomata): implications for biodiversity and biogeography, pp. 537-566 in Zoological Journal of the Linnean Society 152 (3) on page 541, DOI: 10.1111/j.1096-3642.2007.00379.x, http://zenodo.org/record/5442710 |
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