Changes in crustacean hyperglycemic hormones in Pacific whiteleg shrimp Litopenaeus vannamei subjected to air-exposure and low-salinity stresses

Junpei Shinji, Bong Jung Kang, Tomoyuki Okutsu, Kota Banzai, Tsuyoshi Ohira, Naoaki Tsutsui, Marcy N. Wilder

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12 Citations (Scopus)

Abstract

Changes in crustacean hyperglycemic hormone (CHH)-family peptides in response to stress were investigated in Litopenaeus vannamei. Stress treatments consisted of air exposure and low salinity. High-performance liquid chromatography was used to quantify CHH-family peptides in the X-organ-sinus gland complex (XO-SG) in the eyestalks. Among the CHH-family peptides analyzed, only the level of sinus gland peptide-G (SGP-G) in the XO-SG was decreased. SGP-G was also detectable by Western blotting analysis in the hemolymph of animals subjected to stress. These results suggest that SGP-G was secreted from the XO-SG into the hemolymph during stress. Glucose levels in the hemolymph increased under conditions during which SGP-G was detected in the hemolymph. Hyperglycemia was also observed when SGP-G was injected. SGP-G may function to shift energy use to deal with stress.

Original languageEnglish
Pages (from-to)833-840
Number of pages8
JournalFisheries Science
Volume78
Issue number4
DOIs
Publication statusPublished - Jul 2012
Externally publishedYes

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Keywords

  • Air exposure
  • Crustacean hyperglycemic hormone
  • Low salinity
  • Shrimp
  • Stress

ASJC Scopus subject areas

  • Aquatic Science

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