Ontogeny of the digestive enzymes, thyroid hormones and cortisol in developing embryos and yolk-sac larvae of turbot (Scophthalmus maximus L.)

Aquaculture ◽  
2017 ◽  
Vol 479 ◽  
pp. 704-711 ◽  
Author(s):  
Xuehong Tong ◽  
Xiaolan Yang ◽  
Chengman Bao ◽  
Xinhui Tang ◽  
Jialian Wang ◽  
...  
Keyword(s):  
Thyroid Hormones ◽  
Digestive Enzymes ◽  
Scophthalmus Maximus ◽  
Yolk Sac ◽  
Turbot Scophthalmus Maximus

Size Fluctuation in The Eggs and Newly Hatched Larvae of Captive Turbot (Scophthalmus Maximus)

1991 ◽  
Vol 71 (3) ◽  
pp. 679-690 ◽  
Author(s):  
Lesley Ann Mcevoy ◽  
John Mcevoy
Keyword(s):  
Constant Temperature ◽  
Egg Size ◽  
Scophthalmus Maximus ◽  
Yolk Sac ◽  
Positive Correlation ◽  
Larval Length ◽  
Turbot Scophthalmus Maximus ◽  
Newly Hatched Larvae ◽  
Seasonal Decline

The aims of this study were to ascertain if individual turbot females show a seasonal decline in their egg-size when kept in conditions of constant temperature, and to relate turbot egg-size to the length and yolk-sac index of the emergent larva. Each female showed a significant seasonal egg-size decline and there was a positive correlation between egg-size and the length and yolk-sac index of the subsequent larva. However, larval length was not related to yolk-sac index, nor was the ratio of yolk-sac index: larval length related to egg-size. The maximum mean egg-size tended to increase with the female's weight and length. The implications of these findings are discussed in terms of the general ecology of turbot and its culture.

Changes in Behaviour of Atlantic Halibut (Hippoglossus hippoglossus) and Turbot (Scophthalmus maximus) Yolk-Sac Larvae Induced by Bacterial Infections

1993 ◽  
Vol 50 (12) ◽  
pp. 2552-2557 ◽  
Author(s):  
Anne Berit Skiftesvik ◽  
Øivind Bergh
Keyword(s):  
Bacterial Infections ◽  
Fish Larvae ◽  
Early Stage ◽  
Scophthalmus Maximus ◽  
Yolk Sac ◽  
Atlantic Halibut ◽  
Hippoglossus Hippoglossus ◽  
Pathogenic Vibrio ◽  
Turbot Scophthalmus Maximus ◽  
Reduced Activity

Eggs of Atlantic halibut (Hippoglossus hippoglossus) and turbot (Scophthalmus maximus) were exposed to Flexibacter ovolyticus and pathogenic Vibrio sp. strains prior to, and during hatching. Activity, buoyancy and mortality of the yolk sac larvae were monitored from hatching until time of first feeding. The halibut larvae showed reduced activity and increased mortality in response to the challenge of bacteria, compared to uninfected control groups. In addition, the infected halibut larvae showed increased specific density compared to the uninfected larvae. These responses were not found for turbot. However, turbot larvae infected with Vibrio anguillarum had lower activity than larvae infected with F. ovolyticus. The reduced activity of halibut larvae occurred 1–2 weeks prior to the increased mortality, allowing infections to be detected at an early stage. The results suggest that the behaviour of fish larvae is influenced by bacterial infection.

Patterns of catabolic capacities and energy metabolism in developing embryos and yolk-sac larvae of turbot (Scophthalmus maximus L.)

Aquaculture ◽  
2017 ◽  
Vol 481 ◽  
pp. 177-183 ◽  
Author(s):  
Xuehong Tong ◽  
Lele Yang ◽  
Xinhui Tang ◽  
Xiaolan Yang ◽  
Chengman Bao ◽  
...  
Keyword(s):  
Energy Metabolism ◽  
Scophthalmus Maximus ◽  
Yolk Sac ◽  
Turbot Scophthalmus Maximus

Changes of biochemical compositions during development of eggs and yolk-sac larvae of turbot Scophthalmus maximus

Aquaculture ◽  
2017 ◽  
Vol 473 ◽  
pp. 317-326 ◽  
Author(s):  
Xuehong Tong ◽  
Xiaolan Yang ◽  
Chengman Bao ◽  
Jialian Wang ◽  
Xinhui Tang ◽  
...  
Keyword(s):  
Scophthalmus Maximus ◽  
Yolk Sac ◽  
Biochemical Compositions ◽  
Turbot Scophthalmus Maximus
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