Chorizopora brogniartii ( Audouin, 1826 )

Dick, Matthew H., Tilbrook, Kevin J. & Mawatari, Shunsuke F., 2006, Diversity and taxonomy of rocky-intertidal Bryozoa on the Island of Hawaii, USA, Journal of Natural History 40 (38 - 40), pp. 2197-2257 : 2217-2218

publication ID

https://doi.org/ 10.1080/00222930601062771

persistent identifier

https://treatment.plazi.org/id/3C0487C6-FFA7-942F-BA5C-C4A5FC713919

treatment provided by

Felipe

scientific name

Chorizopora brogniartii ( Audouin, 1826 )
status

sensu lato

Chorizopora brogniartii ( Audouin, 1826) sensu lato

( Figure 7C, D View Figure 7 )

Flustra brogniartii Audouin 1826, p 240 .

Chorizopora brogniartii: Gordon 1984, p 113 , Plate 44C; Tilbrook et al. 2001, p 64, Figure 8C View Figure 8 ; Tilbrook 2006, p 102, Figure 17B–D View Figure 17 .

Measurements ZL, 0.30–0.45 (0.398¡0.043). ZW, 0.25–0.30 (0.264¡0.017). OrL, 0.06–0.07

(0.063¡0.0016). OrW, 0.09–0.11 (0.099¡0.009). OvL, 0.15–0.18 (0.169¡0.011). OvW, 0.18–0.23 (0.196¡0.017) (ovicell n 56).

Description

Colony unilaminar, encrusting; zooids interconnect by tubular pore chambers. Frontal wall gymnocystal, thin-walled, hyaline, non-spinous, finely transversely ridged, with finer perpendicularly orientated striae. Orifice ( Figure 7C View Figure 7 ) more than semicircular, broader than long, with proximal margin straight or slightly convex; orifice of ovicellate zooids larger than that of non-ovicellate zooids. Avicularia interzooidal, often immediately distal to a zooid; interzooidal kenozooids present. Ovicell ( Figure 7C View Figure 7 ) raised, hemispherical, smooth, imperforate, not associated with an avicularium. Ancestrula ( Figure 7D View Figure 7 ) similar to but smaller than subsequent autozooids, with four orificial spines and a tiny mid-frontal pore.

Remarks

There are some differences between our material and that described from other localities. For example, Hayward and Ryland (1999) indicate an oval ancestrula with four frontal spines for British material, whereas an ancestrula we observed ( Figure 7D View Figure 7 ) is elongate and lacks frontal spines. Furthermore, an avicularium is generally associated with the ovicell in specimens from Britain, Vanuatu ( Tilbrook et al. 2001), and New Zealand ( Gordon 1984), but not in our material. Nominal C. brogniartii from New Zealand has a sharp suboral ‘‘papilla’’ ( Gordon 1984). In Britain, C. brogniartii is sublittoral, whereas specimens similar to this species occur intertidally in Panama (M. H. Dick, unpublished data) and Hawaii. Hayward and Ryland (1999) furthermore mentioned that considerable variation exists in zooid size among geographically separate populations. These sorts of variation suggest that nominal C. brogniartii includes a number of distinct species worldwide; however, it is beyond the scope of this paper to resolve this issue.

Distribution

Putatively circumglobal, in tropical and temperate shelf habitats ( Tilbrook et al. 2001). This is the first record from the Hawaiian Islands.

‘‘Grade’’ UMBONULOMORPHA Gordon, 1989 Superfamily ARACHNOPUSIOIDEA Jullien, 1888

Kingdom

Animalia

Phylum

Bryozoa

Class

Gymnolaemata

Order

Cheilostomatida

Family

Chorizoporidae

Genus

Chorizopora

Loc

Chorizopora brogniartii ( Audouin, 1826 )

Dick, Matthew H., Tilbrook, Kevin J. & Mawatari, Shunsuke F. 2006
2006
Loc

Chorizopora brogniartii: Gordon 1984 , p 113

Tilbrook KJ 2006: 102
Tilbrook KJ & Hayward PJ & Gordon DP 2001: 64
Gordon DP 1984: 113
1984
Loc

Flustra brogniartii

Audouin JV 1826: 240
1826
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