Records and life history of Praunus flexuosus (Crustacea: Mysidacea) in Icelandic waters |
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Authors: | Astthorsson Olafur S |
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Institution: | Marine Research Institute PO Box 1390, Skúlagata 4, 121 Reykjavik, Iceland |
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Abstract: | Since its fust record in Icelandic waters in 1970, Praunus flexuosushas been found to be very common in the littoral zone of theAtlantic water at the south-west coast of Iceland. It seemspossible that P. flexuosus has only recently been introducedinto Icelandic waters. The life history of P. flexuosus hasbeen followed in Skerjafjord, near Reykjavik, in 19851986.The animals have a one-year life span. The females, some ofwhich appear to produce three broods, breed mainly during JuneAugust.Breeding females ranged in length from 18.7 to 25.7 mm and thelargest brood was 72 eggs. The incubation time at c. 11°Cwas estimated to be 25 days. The daily growth rate of juvenileswas estimated to be 0.16 mm in JulyAugust and 0.050.07mm in SeptemberOctober. No growth occurred during thewinter months of OctoberMarch. |
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