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Cybium,
International Journal of Ichthyology |
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Egg capsules of deep-sea catsharks from Eastern North Atlantic, with first descriptions of the capsule of Galeus murinus and Apristurus aphyodes (Chondrichthyes: Scyliorhinidae) Samuel Paco IGLÉSIAS (1), Marie-Henriette DU BUIT (1) & Kazuhiro NAKAYA (2) (1) Station
de Biologie marine, Muséum national dHistoire naturelle, Place
de la Croix, BP 225, 29182 Concarneau cedex,
FRANCE. Abstract.
- Egg capsules of four species of the deepwater catshark genera Galeus
and Apristurus are described and compared. The egg capsules of
G. murinus and A. aphyodes are firstly described
from 4 and 9 capsules respectively, collected in the mothers oviducts.
Unlike numerous species of the family, their egg capsules do not have
prolonged tendrils. The smallest gravid females of G. murinus
and A. aphyodes measure 460 and 490 mm respectively.
Their oviparous mode of reproduction was confirmed. There is only one
egg capsule per oviduct for both species, indicating they are single oviparous
species. Comments are made on the oviparity of the catsharks of these
genera. |
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