Pandorina


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Pandorina

 

a genus of mobile, colonial green algae of the order Volvocales. There are two known species, both of which are found in freshwaters. The colonies are globose or elliptic and measure 70–150 microns. They are enclosed in a gelatinous envelope and consist of 16 (less frequently, eight or 32) cells, each bearing two flagella. In asexual reproduction, each cell divides into 16 daughter cells, thus forming a new colony. The sexual process is heterogamy.

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x x Coelastrum astroideum De Notaris Coelastrum microporum Nageli Cosmarium botrytis Meneghini ex Ralfs x Keratococcus rhaphidioides (Hansgirg) Pascher Pandorina sp.
West -- -- -- Tetraedron gracile Hansgirg -- -- -- Pandorina sp -- -- -- Pediastrum sp -- -- -- Micrasterias sp -- -- -- Microspora sp -- -- -- Mougeotia sp -- -- -- TOTAL INDIVIDUAL COUNT 4 4 7 CLASS DINOPHYCEAE Ceratium sp -- -- -- Gymnodinium sp 50 -- -- Perinidium cinctum (Muller) Ehrenberg -- -- -- Perinidium sp -- -- -- TOTAL INDIVIDUAL COUNT 50 0 0 CLASS EUGLENOPHYCEAE -- Euglena sp -- -- -- Phacussp 2 -- -- TOTAL INDIVIDUAL COUNT 2 0 0 CLASS CYANOPHYCEAE Lyngbya sp -- 2 -- O.
CHARACTER TAXA OF THE ALLIANCE: Actinastrum hantzschii, Closterium limneticum, Micractinium pusillum, Mucidosphaerium pulchellum, Pandorina morum, Pediastrum duplex, Scenedesmus quadricauda.
stellifera Nygaard (2,4) D l Pandorina minodii Chod.
Pascher Lagerheimia ciliata (Lagerheim) Chodat Micractinium pusillum Fresenius X Monoraphidium circinale (Nygaard) Nygaard Nephrochlamys subsolitaria X X X Komarek & Foot Oocystis lacustris Chodat X X X X Pandorina morum Muller Pediastrum boryanum var.
In Ponds A and B, there were blooms of Euglena and Pandorina respectively and in Ponds C and D of Spirulina and Oscillatoria.
The Chlorophyceae were represented by species from the genera Closteriopsis, Closterium, Coelastrum, Dictyosphaerium, Eudorina, Oedogonium, Oocystis, Palmella, Pandorina, Staurastrum, Tetradesmus and Tetraspora.