Hyperglycemic and osmotic effects of dopamine and recombinant hormone CHH-B1 in the Pacific white shrimpLitopenaeus vannamei
| Autor: | Elizabeth Ponce-Rivas, Claudia Farfan, Fernando Díaz, Laura Camacho-Jiménez, Ana Denise Re, María Enriqueta Muñoz-Márquez |
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| Rok vydání: | 2017 |
| Předmět: |
030110 physiology
0301 basic medicine medicine.medical_specialty animal structures biology Osmotic concentration Physiology fungi Litopenaeus Aquatic Science Oceanography biology.organism_classification Crustacean Shrimp 03 medical and health sciences 030104 developmental biology Endocrinology Dopamine Internal medicine Hemolymph medicine Osmoregulation Hormone medicine.drug |
| Zdroj: | Marine and Freshwater Behaviour and Physiology. 50:67-79 |
| ISSN: | 1029-0362 1023-6244 |
| Popis: | The effects of dopamine (DA) on crustacean hyperglycemic hormone (CHH) release and osmoregulation were investigated in the white shrimp Litopenaeus vannamei. Application of 2 μg of the recombinant CHH-B1His hormone or 2 × 10−6 mol L−1 of DA to intact shrimp caused an increase in the hemolymph glucose levels 1 h post-injection, suggesting that DA might stimulate hyperglycemia through CHH release from the sinus glands. This assumption was supported by similar experiments using bilaterally eyestalk-ablated shrimp. Additionally, rCHH-B1His restored the osmoregulatory capacity (OC) of shrimp under hyperosmotic conditions to basal values 2 h post-injection, whereas DA led to an OC decrease in shrimp at all sampling times. These neuroendocrine factors may be involved in the control of metabolism and osmoregulation in L. vannamei and could be important for its adaptation to different environmental conditions. |
| Databáze: | OpenAIRE |
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