Effects of neuroendocrine on the immune and metabolic functions of <em>Litopenaeus vannamei</em> under high nitrite conditions

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dc.contributor.authorLi, Yuquan
dc.contributor.authorHao, Pengyuan
dc.contributor.authorSong, Xuan
dc.contributor.authorZhang, Long
dc.contributor.authorWang, Xiaofan
dc.contributor.authorWang, Zhongkai
dc.contributor.authorLiu, Fei
dc.contributor.authorWang, Renjie
dc.contributor.authorCui, Yanting
dc.date.accessioned2025-03-28T20:51:03Z
dc.date.available2025-03-28T20:51:03Z
dc.date.issued2025
dc.description.abstractIn recent years, nitrite toxicity has become a significant concern in shrimp aquaculture, affecting cultured species' health and productivity. Herein, we investigated the impacts of nitrite on the immune and metabolic functions of <em>Litopenaeus vannamei</em> and assessed the impacts of eyestalk hormone on these parameters when shrimp were cultured under high nitrite conditions. After exposure of <em>L. vannamei</em> to nitrite-N at 0, 2.5, 5, 7.5, 10 mg/L, and unilateral eyestalk-ablated shrimp only to nitrite-N at 10 mg/L for 48 h, phenoloxidase (PO) activity, antibacterial activity, bacteriolytic activity, oxyhemocyanin, lactate, and glucose contents were measured. Oxyhemocyanin levels decreased as the nitrite-N concentrations increased, while lactate and glucose levels increased. This indicated that conversion from aerobic to anaerobic respiratory metabolism is exacerbated by hypoxia-induced nitrite stress to ensure that readily metabolizable energy stores are available to meet increased energy demand. The decrease in PO levels, antibacterial activity, and bacteriolytic activity in the hemolymph indicated that the physiological and immunological responses of <em>L. vannamei</em> was impaired by subjection to nitrite-N. Under the same nitrite-N conditions, eyestalk ablation caused a remarkable decrease in glucose, lactate, and PO levels, compared with those detected in the non-ablated eyestalk group. These findings suggest that the eyestalk hormone in <em>L. vannamei</em> increases metabolic and immune responses as a protective mechanism against nitrite-N stress.
dc.identifier.doihttps://doi.org/10.46989/001c.126353
dc.identifier.issn0792-156X
dc.identifier.urihttps://hdl.handle.net/10524/81425
dc.relation.ispartofThe Israeli Journal of Aquaculture - Bamidgeh
dc.subjecteyestalk hormone
dc.subjectimmunological response
dc.subjectneuroendocrine
dc.subjectnitrite stress
dc.subjectLitopenaeus vannamei
dc.titleEffects of neuroendocrine on the immune and metabolic functions of <em>Litopenaeus vannamei</em> under high nitrite conditions
dc.typeArticle
dc.type.dcmiText
prism.volume77

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Volume 77, Issue 1, 2025