A New Species of Photosymbiotic Ascidian from the Ryukyu Archipelago, Japan, with Remarks on the Stability of Stigma Number in Photosymbiotic Diplosoma Species

被引：10

作者：

Hirose, Euichi ^{[1
]}

Oka, Atsushi T. ^{[1
]}

机构：

[1] Univ Ryukyus, Dept Chem Biol & Marine Sci, Okinawa 9030213, Japan

来源：

ZOOLOGICAL SCIENCE | 2008年 / 25卷 / 12期

基金：

日本学术振兴会;

关键词：

colonia; ascidian; Diplosoma; photosymbiosis; stigma pattern; taxonomy;

D O I：

10.2108/zsj.25.1261

中图分类号：

Q95 [动物学];

学科分类号：

071002 ;

摘要：

Diplosoma variostigmatum sp. nov. is a photosymbiotic ascidian in the family Didemnidae. This species is characterized by the unique pattern of its stigma number, which is often variable within the same zoold, as well as within the same colony. The total number of stigmata per half branchiall sac varies from 22 (five, six, six, and five stigmata from the top to bottom rows) to 27 (seven, seven, seven, and six). In contrast, the stigma patterns are constant In D. ooru, D. simile, D. simileguwa, and D. virens. Thus, the stigma number and its stability (or variability) seem to be important as characters for the taxonomy of the photosymbiotic Diplosoma species.

引用

页码：1261 / 1267

页数：7

共 13 条

[1]

BERILL NJ, 1950, TUNICATA ACCOUNT BRI

[2] Plant rake and algal pouch of the larvae in the tropical ascidian Diplosoma similis:: An adaptation for vertical transmission of photosynthetic symbionts Prochloron sp. [J].