Burrowing habits in juveniles of marine prawn Metapenaeus dobsoni (Crustacea: Decapoda)

Thangaraj Subramanian, V (2000) Burrowing habits in juveniles of marine prawn Metapenaeus dobsoni (Crustacea: Decapoda). Indian Journal of Marine Sciences, 29 (4). pp. 329-332.


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    Juveniles of M.dobsoni revealed an intrinsic circadian rhythm, burrowing to rest quietly in day and moving actively at night, and the schedule of changing over the phase is sunrise and sunset. The intensity of light is the prime factor stimul ating burrowi ng habit that the juveniles would burrow on subjected to light in night and emerge to move actively under reduced light in day. Several factors, such as, cloudiness, temperature, salinity and availability of food interrupt burrowing. The critical temperature limits are 18-32°C and below 10°C is fatal. The juveniles measuring <25 mm size have no response to light and do not burrow as larger ones.

    Item Type: Article
    Uncontrolled Keywords: Burrowing habits; juveniles; marine prawn; Metapenaeus dobsoni; Crustacea; Decapoda
    Subjects: Crustacean Fisheries
    Divisions: CMFRI-Madras (Chennai)
    Depositing User: Arun Surendran
    Date Deposited: 24 Feb 2014 09:04
    Last Modified: 09 Sep 2015 15:58
    URI: http://eprints.cmfri.org.in/id/eprint/9904

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