Awards Nomination 20+ Million Readerbase
Indexed In
  • Online Access to Research in the Environment (OARE)
  • Open J Gate
  • Genamics JournalSeek
  • JournalTOCs
  • Scimago
  • Ulrich's Periodicals Directory
  • Access to Global Online Research in Agriculture (AGORA)
  • Electronic Journals Library
  • Centre for Agriculture and Biosciences International (CABI)
  • RefSeek
  • Directory of Research Journal Indexing (DRJI)
  • Hamdard University
  • EBSCO A-Z
  • OCLC- WorldCat
  • Scholarsteer
  • SWB online catalog
  • Virtual Library of Biology (vifabio)
  • Publons
  • MIAR
  • University Grants Commission
  • Euro Pub
  • Google Scholar
Share This Page
Journal Flyer
Journal of Aquaculture Research & Development

Abstract

Effect of Decreasing Water Levels on the Spawning Rate and Egg Count of Female Crayfish Procambarus (Austrocambarus) llamasi (Villalobos, 1955)

Carmona-Osalde Claudia, Puerto-Novelo Enrique and Miguel Rodriguez- Serna

Three different water levels were assessed to establish their role in Procambarus llamasi spawning synchronization. A total of 132 crayfish were used for this assay, 120 were female and 12 were male FI (reproductive male stage), with an average initial size of 45 mm total length and 2.5 g in weight. P. llamasi were produced under controlled conditions at CINVESTAV-Merida, Yucatan, Mexico. The experimental system consisted of 12 plastic tanks of 0.60×0.34×0.28 m, equipped with water recirculation, biological filters, individual PVC shelters, a constant water temperature of 26ºC and total darkness. Decreasing water levels in the crayfish tanks showed an important negative effect of this factor on most of the biological parameters measured, including the spawning rate and the number of eggs spawned by females. Spawning female sizes in low water levels were smaller and with fewer eggs than in the other levels. These results revealed an important relationship between water level and spawning rate for P. llamasi.