Egg Development of Paralichthys orbignyanus (Valenciennes, 1839)
نویسندگان
چکیده
منابع مشابه
Spermatic abnormalities of piracanjuba Brycon orbignyanus (Valenciennes, 1849) after cryopreservation.
The objective of this research was to verify the presence of spermatic abnormalities on semen of Brycon orbignyanus after cryopreservation. Semen was collected from ten four-year-old males who presented secondary reproductive characteristics for migrating fish. Sperm was evaluated for motility, vigor and spermatic morphology before and after cryopreservation. A cryoprotectant solution was made ...
متن کاملCharacterization of digestive enzymes from captive Brazilian flounder Paralichthys orbignyanus.
Knowledge of specific enzyme activity, along with animal habits and digestive capacity is essential in formulating an appropriate diet for any species. In this study, we evaluated and characterized the activity of digestive enzymes present in the liver, intestine, and stomach of Paralichthys orbignyanus. The effects of pH and temperature on enzyme activity were also evaluated via the use of spe...
متن کاملWater quality and zooplankton in tanks with larvae of Brycon Orbignyanus (Valenciennes, 1949).
Due to the importance of water variables conditions and available food in the development and survival of fish larvae, the current research evaluates the effects of two different food treatments (ration + zooplankton and only zooplankton) and water quality in tanks with Brycon orbignyanus larvae. Total water transparency (45 cm) has been mainly associated with short residence time, continuous w...
متن کاملNew record of Carcharhinus leucas (Valenciennes, 1839) in an equatorial river system
Bull sharks are a cosmopolitan shark species frequently found in shallow shelf ocean waters and, occasionally, in several tropical river systems around the world. Due to bull shark’s capability to enter riverine systems, the documentation of its occurrence is essential for future fisheries inspections and studies. In this way, this study aims to report the presence of a medium sized specimen of...
متن کاملFresh, equilibrated and post-thaw sperm quality of Brycon orbignyanus (Valenciennes, 1850) and Prochilodus lineatus (Valenciennes, 1837) treated with either salmon GnRHa and domperidone or pituitary extract
The effects of reduced doses of OvaprimTM (GnRHa + domperidone) on sperm release of Brycon orbignyanus and Prochilodus lineatus were evaluated. Furthermore, sperm quality was compared among fresh, equilibrated and postthaw samples. Males received a single and reduced dose of OvaprimTM (0.125 or 0.25 ml/kg); control males received pituitary extract (cPE; 3 mg/kg). Fresh sperm was evaluated for v...
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ژورنال
عنوان ژورنال: Brazilian Archives of Biology and Technology
سال: 2005
ISSN: 1516-8913
DOI: 10.1590/s1516-89132005000300016