The Testis Development in 3rd- to 6th-Instar Nymphs of the Cricket, Gryllus bimaculatus

Atsushi C. Suzuki, Kenji Nishimura

Research output: Contribution to journalArticle

3 Citations (Scopus)


A simple method for determination of the early stages of nymphs of the cricket, Gryllus bimaculatus, was presented. The width of the head-capsules was found to be a useful value to determine the nymphal stages. On this evidence, the testes from 3rd- to 6th-instar nymphs were investigated and histologically analyzed. The number of spermatogonia rapidly increased between the 3rd- to 5th-instars. Primary spermatocytes entered into meiotic prophase at the latest 2 days after ecdysis into the 5th-instar.

Original languageEnglish
Pages (from-to)637-639
Number of pages3
JournalZoological Science
Issue number4
Publication statusPublished - 1997 Aug


ASJC Scopus subject areas

  • Animal Science and Zoology

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