サイズヒストグラムによるウミホタル個体群動態の解析

DOI Web Site 被引用文献1件 参考文献10件

書誌事項

タイトル別名
  • Population Dynamics of the Myodocopid Ostracod Vargula hilgendorfii Based on Size-Frequency Distribution Analysis
  • サイズ ヒストグラム ニ ヨル ウミホタル コタイグン ドウタイ ノ カイセキ

この論文をさがす

抄録

The life history of the myodocopid ostracod Vargula hilgendorfii was investigated by size-frequency distribution analysis in Akita Port, Japan, from April to December, 2003. Vargula hilgendorfii individuals were collected using baited traps, and the carapace length was measured by computer analysis of a digital photograph of each individual taken under a stereomicroscope. The population was divided into seven groups based on carapace length. These groups corresponded to the five juvenile stages, the adult male stage, and the adult female stage. Each peak in the number of V. hilgendorfii individuals is related to the growth of the population. Our field data clearly suggest that the Akita Port population of V. hilgendorfii produces two generations per year. Adults that survived the winter became sexually active in May and released free-living juveniles in July. After reproducting, they died without having entered a second reproductive cycle. The first-generation juveniles reached the adult stage after five molts and released second-generation juveniles in September. By winter, these second-generation juveniles reached maturity without releasing any new juveniles; they become sexually active in the following spring.

収録刊行物

被引用文献 (1)*注記

もっと見る

参考文献 (10)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ