Development of conceptacles in Amphiroa (Corallinales, Rhodophyta)

Rosas-Alquicira, Edgar; Riosmena-Rodríguez, Rafael; Hernández-Carmona, Gustavo; Neto, Ana I.

http://hdl.handle.net/10400.3/2996

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Authors

Rosas-Alquicira, Edgar

Riosmena-Rodríguez, Rafael

Hernández-Carmona, Gustavo

Neto, Ana I.

Abstract(s)

Here, we describe the development of sporangial and gametangial conceptacles for Amphiroa beauvoisii and A. vanbosseae; sporangial conceptacles only for A. misakiensis; and gametangial conceptacles only for A. cryptarthrodia and A. rigida. The descriptions are based on the observation of histological preparations obtained from 112 specimens collected from the Gulf of California, in Mexico, and the Azores archipelago of Portugal. Information on the development of the sporangial conceptacle pore and conceptacle senescence is here described and illustrated for the first time. Four development patterns were observed: two for sporangial conceptacles; one for spermatangial conceptacles; and one for carposporangial conceptacles. The phases of development of the sporangial conceptacle were found to be useful in delimiting species within the genus. Based on the sporangium location on the cavity floor and the pore canal anatomy, the species A. beauvoisii, A. misakiensis and A. vanbosseae can be distinguished from each other.

Keywords

Carposporangial Filament Origin Sporangium Location Sporangial Pore Canal Anatomy Senescence Taxonomy

URI

http://hdl.handle.net/10400.3/2996

Citation

Rosas-Alquicira EF, Riosmena-Rodríguez R, Hernández-Carmona G & Neto AI (2013). "Development of conceptacles in Amphiroa (Corallinales, Rhodophyta)". Acta Botanica Brasilica, 27(4): 698-708.