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Spawning and intracapsular development of Stramonita haemastoma haemastoma (Gastropoda: Muricidae) collected in northern Tunisia
Lahbib, Y.; Abidli, S.; El-Menif, N.T. (2011). Spawning and intracapsular development of Stramonita haemastoma haemastoma (Gastropoda: Muricidae) collected in northern Tunisia. Mar. Biol. Res. 7(7): 719-726
In: Marine Biology Research. Taylor & Francis: Oslo; Basingstoke. ISSN 1745-1000, more
Peer reviewed article  

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Keywords
    Spawning; Gastropoda [WoRMS]; Muricidae Rafinesque, 1815 [WoRMS]; Stramonita haemastoma (Linnaeus, 1767) [WoRMS]; MED, Tunisia [Marine Regions]; Marine

Authors  Top 
  • Lahbib, Y.
  • Abidli, S.
  • El-Menif, N.T.

Abstract
    Spawning and intracapsular development were studied in a Tunisian population of the rocky marine snail Stramonita haemastoma haemastoma. Spawning in aquaria occurred from late May until mid June. Females deposited between 20 and 86 egg capsules containing 1724–6956 eggs ranging between 60 and 75 µm in diameter. The number of egg capsules was not correlated with female size. However, larger females deposited bigger capsules and with more eggs. In the laboratory, with seawater temperature at 22°C and salinity of 35 psu, intracapsular development took 18 days and produced planktonic larvae without nurse eggs. Under laboratory conditions, hatchlings (41–62 µm in shell length) only survived for 4 days.

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