Thermal stress induced hyperglycemia in the blue swimmer crab, Portunus pelagicus

Sugumar Vasudevan; Saravanan Rajendran

doi:10.1016/j.jtherbio.2021.103076

Thermal stress induced hyperglycemia in the blue swimmer crab, Portunus pelagicus

J Therm Biol. 2021 Aug:100:103076. doi: 10.1016/j.jtherbio.2021.103076. Epub 2021 Aug 8.

Authors

Sugumar Vasudevan¹, Saravanan Rajendran²

Affiliations

¹ Department of Oceanography and Coastal Area Studies, Alagappa University, Science Campus, Karaikudi, 630 003, Tamil Nadu, India. Electronic address: sugumarv@alagappauniversity.ac.in.
² Department of Oceanography and Coastal Area Studies, Alagappa University, Science Campus, Karaikudi, 630 003, Tamil Nadu, India.

PMID: 34503813
DOI: 10.1016/j.jtherbio.2021.103076

Abstract

Hyperglycemia is a stress responsible mechanism induced in crustaceans through the secretion of Crustacean Hyperglycemic Hormone (CHH). The effect of thermal shock on the hemolymph CHH levels was studied in P. pelagicus. Crabs were exposed to varying temperatures for 3 h and were then transferred to ambient temperature (28 °C). A higher CHH level of 47.30 ± 2.26 fmol/ml was observed on exposure of crabs to 24 °C, over a recovery period of 3 h. This was reflected with increase in hemolymph glucose causing hyperglycemia and subsequent decrease in hepatopancreas glycogen levels. The results suggest the modulatory role of CHH in producing the energy required for the physiological reparation faced by the crabs during thermal stress.

Keywords: Blood glucose; Crustacean hyperglycemic hormone; ELISA; Glycogen.

MeSH terms

Animals
Arthropod Proteins / metabolism
Brachyura / metabolism*
Brachyura / physiology
Glucose / metabolism*
Glycogen / metabolism
Heat-Shock Response*
Hemolymph / metabolism
Hepatopancreas / metabolism
Invertebrate Hormones / metabolism
Nerve Tissue Proteins / metabolism
Up-Regulation

Substances

Arthropod Proteins
Invertebrate Hormones
Nerve Tissue Proteins
hyperglycemic hormone, crustacean
Glycogen
Glucose