Biological notes on mature freshwater medusae, Craspedacusta sowerbyi (Hydrozoa, Limnomedusae, Olindiidae), from southcentral Wakayama Prefecture, Japan

HANDLE Web Site 20 References Open Access

Bibliographic Information

Other Title
  • 和歌山県中南部域で採集されたマミズクラゲ(ヒドロ虫綱, 淡水クラゲ目, ハナガサクラゲ科)の成熟クラゲの生物学的記録
  • ワカヤマケン チュウナンブイキ デ サイシュウサレタ マミズクラゲ ヒドロチュウコウ タンスイクラゲモク ハナガサクラゲカ ノ セイジュク クラゲ ノ セイブツガクテキ キロク

Search this article

Abstract

Fresh-water hydromedusae, Craspedacusta sowerbyi Lankester (Hydrozoa, Limnomedusae, Ohndiidae), were found in three ponds and a dam reservoir in Tanabe city and Shirahama town, Wakayama Prefecture, between the years 1996 and 2006. The morphology of mature female and male medusae, nematocysts in the tentacles, and sperm is described. The biggest medusa was 22 mm in diameter with a large number oftentacles, up to 514 in several circlets. The present specimens are larger and more complicated in morphology than those of the same species described from China and Korea, while specimens with many more tentacles (up to ca 700) have been reported from other prefectures in Japan. The present specimens did not display parthenogenesis.

Journal

References(20)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top