Egg capsules of the yellownose skate Zearaja chilensis (Guichenot 1848) and the roughskin skate Dipturus trachyderma (Krefft and Stehmann 1974) (Rajiformes: Rajidae) from the south-eastern Pacific Ocean

Concha, Francisco, Oddone, María Cristina, Bustamante, Carlos and Morales, Naití (2012) Egg capsules of the yellownose skate Zearaja chilensis (Guichenot 1848) and the roughskin skate Dipturus trachyderma (Krefft and Stehmann 1974) (Rajiformes: Rajidae) from the south-eastern Pacific Ocean. Ichthyological Research, 59 4: 323-327. doi:10.1007/s10228-012-0293-z

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Author Concha, Francisco
Oddone, María Cristina
Bustamante, Carlos
Morales, Naití
Title Egg capsules of the yellownose skate Zearaja chilensis (Guichenot 1848) and the roughskin skate Dipturus trachyderma (Krefft and Stehmann 1974) (Rajiformes: Rajidae) from the south-eastern Pacific Ocean
Formatted title
Egg capsules of the yellownose skate Zearaja chilensis (Guichenot 1848) and the roughskin skate Dipturus trachyderma (Krefft and Stehmann 1974) (Rajiformes: Rajidae) from the south-eastern Pacific Ocean
Journal name Ichthyological Research   Check publisher's open access policy
ISSN 1341-8998
1616-3915
Publication date 2012
Sub-type Article (original research)
DOI 10.1007/s10228-012-0293-z
Volume 59
Issue 4
Start page 323
End page 327
Total pages 5
Place of publication Tokyo, Japan
Publisher Springer Japan
Collection year 2013
Language eng
Formatted abstract
Egg capsules of Zearaja chilensis were obtained from individuals kept in captivity and from dead specimens captured in Valparaíso Bay, central Chile. One female under laboratory conditions deposited three pairs of egg capsules in 6 days. The egg capsules of Dipturus trachyderma were obtained from a female captured in Valdivia, south Chile. Fresh egg capsules of both species were golden-brown and thick walled. Size of egg capsules of Z. chilensis ranged from 94 to 144 mm in capsule length and 64 to 76 mm in capsule width. Those of D. trachyderma ranged between 197 and 199 mm in capsule length and 110.0 and 129.0 mm in capsule width. Range and mean values of capsule length and width of egg capsules described in this study were smaller than those reported for the same species in the south-western Atlantic Ocean. This is the first report on egg-laying rate of Z. chilensis and the first description of egg capsules of Z. chilensis and D. trachyderma from the south-eastern Pacific Ocean.
Keyword Rajoid
Egg-bearing elasmobranch
Single oviparity
Oviposition rate
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Published online: 30 June 2012.

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2013 Collection
School of Biomedical Sciences Publications
 
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Created: Wed, 04 Jul 2012, 10:11:11 EST by Carlos Bustamante Diaz on behalf of School of Biomedical Sciences