Images

Taxonomic characters

Morphology / Structure

- asexual spheroids

     - ellipsoidal to ovoid in shape with a wide posterior face

     - up to 1,000 um long

     - 5,000–8,000 somatic cells (connected by one another via thick cytoplasmic bridges) and 2–8 (usually 3–5) gonidia (not evident in juvenile spheroids) distributed in the posterior two-thirds portion

- sexual spheroids

     - 5,000–13,000 celled

     - up to 900 um long

     - monoecious with 70– 250 (generally 100–150) eggs and 3–5 sperm packets

Life history

- monoecious

Ecology

Type locality: a small pond just outside Lake Isanuma, Isanuma, Kawagoeshi, Saitama Prefecture, Japan.
Distribution: Japan.

Availability in culture collections or research labs

- available as NIES-2739 from the Microbial Culture Collection at National Institute for Environmental    Studies    (Kasai    et al.    2009)    and UTEX LB 2967 from the Culture Collection of Algae at the University of Texas at Austin.

Media and growth conditions in culture

Sequence Information

NCBI

Links to other databases

Algae Base

Index Nominum Algarum

Global Biodiversity Information Facility

Miscellaneous

Etymology: The species epithet ‘‘ferrisii’’ honoring Dr. Patrick Ferris who contributed much to our knowledge of volvocalean genetics (e.g., Ferris et al. 2010).

Selected References

DESCRIPTION OF TWO NEW MONOECIOUS SPECIES OF VOLVOX SECT. VOLVOX (VOLVOCACEAE, CHLOROPHYCEAE), BASED ON COMPARATIVE MORPHOLOGY AND MOLECULAR PHYLOGENY OF CULTURED MATERIAL. Nanako Isaka, Hiroko Kawai-Toyooka, Ryo Matsuzaki, Takashi Nakada and Hisayoshi Nozaki. DOI: 10.1111/j.1529-8817.2012.01142.x

Search Google Scholar

Contributors