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Egg capsule morphology of Parascyllium variolatum (Duméril, 1853) (Chondrichthyes; Parascylliidae), with notes on oviposition rate in captivity

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Abstract:

The egg capsule of Parascyllium variolatum is described for the first time, based on 57 eggs laid by three captive fish over a 167 day study period at Melbourne Aquarium. The egg capsule is bulbous, bearing two elongated horns. An indistinct or rudimentary third horn may be present. Aprons present; fibres present; small lateral fringes present. Notes on oviposition rates are also discussed and were shown to vary from 12 to 39 days with one or two eggs being deposited each time.

Keywords: Parascylliidae; Parascyllium variolatum; egg capsule morphology; oviposition rate

Document Type: Research Article

DOI: http://dx.doi.org/10.1111/j.1095-8649.2007.01431.x

Affiliations: Lepelaarsoord 6, 2317 XK Leiden, The Netherlands

Publication date: May 1, 2007

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