A New Species of Dysmorphococcus (Phacotaceae, Volvocales) and Its Life Cycle

Yu Min-Juan, Wei Yin-Xin, Richard Starr

Received:1900-01-01 Revised:1900-01-01 Online:1991-07-10 Published:1991-07-10
Contact: Yu Min-Juan

Abstract:

This paper deals with the morphology and life cycle of a new species of

Dysmorphococcus oblatus Yu et Wei (Phacotaceae, Volvocales) from Africa. The alga seems

to be morphologically rather distinct from the other members (lorica, protoplast and number

of pyrenoid). Moreover, a comparison is made of overall morphological and reproductive

characteristics of the present taxon with the other 8 known species of this genus. The cultural

experiment of the life cycle of this alga reveals certain attributes unrecorded for early des-

cribed species of this genus. The alga is homothallic, and heterogametic and sexual reproduc-

tion produces 32-64 male gametes and 2 female gametes.

Key words: Dysmorphococcus oblatus, Sexual reproduction, Homothallism, Heterogamete

Yu Min-Juan, Wei Yin-Xin, Richard Starr. A New Species of Dysmorphococcus (Phacotaceae, Volvocales) and Its Life Cycle[J]. .

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