A case of tetrophthalmia with unilateral synophthalmia in an unborn fetus of blue shark Prionace glauca (Carcharhiniformes, Carcharhinidae)

被引:2
|
作者
Pasten-Marambio, Victor [1 ]
Hevia-Hormazabal, Valentina [1 ]
Acuna, Enzo [1 ,2 ]
Alonso Vega, J. M. [1 ]
机构
[1] Univ Catolica Norte, Fac Ciencias Mar, Dept Biol Marina, Casilla 117, Coquimbo, Chile
[2] Univ Catolica Norte, Dept Biol Marina, Millenium Nucleus Ecol & Sustainable Management O, Coquimbo, Chile
关键词
Chondrichthyes; orbital malformations; conjoined twins; bycatch; embryogenesis; RECORD; FIELD;
D O I
10.22370/rbmo.2018.53.0.1251
中图分类号
Q17 [水生生物学];
学科分类号
071004 ;
摘要
This study describes and classifies a case of multiple malformations in an unborn blue shark Prionace glauca fetus, which was extracted from a gravid female captured during a research campaign addressed to the biological study of sharks in northern and central Chile. The analyzed specimen shows tetrophthalmia with unilateral synophthalmia, anomaly characterized by the existence of 4 ocular globes, two of which are partially fused. In addition, the axial skeleton of the fetus shows thoracic lordosis and helical torsion in the abdominal-caudal portion. This is the first world report of tetrophthalmia with unilateral synophthalmia in chondrichthyans.
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页码:25 / 30
页数:6
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