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- W4248585909 abstract "Most marine crustacean eggs contain a full complement of nutritional resources that fuel the growth and metabolic processes over the course of their development. In terms of biochemical constituents, lipids and proteins play pivotal and central roles in these processes and, accordingly, have been studied extensively in crustaceans. Given the propensity of some ovigerous (egg-bearing) American lobsters ( Homarus americanus ) to undergo seasonal inshore-to-offshore migrations, thereby exposing their eggs to varying thermal regimes, this study’s goal was to assess egg quality over their course of development by documenting changes in total lipids, proteins, and egg size (volume) in lobsters subjected to one of three simulated thermal regimes (inshore, offshore, constant (12°C), N = 5/trt, 15 total) in the laboratory and sampled at five discrete time intervals. Total egg lipids showed a marked decrease over time (r 2 adj = 0.85, P < 0.0001), early in the fall (average = -26%) and late spring (-62%), compared with stark increases in proteins over the same period (r 2 adj = 0.63, P < 0.0001, averages = 60%, 34%, fall and spring). Although there were no significant differences in total lipid or protein values (or egg sizes) between eggs exposed to inshore and offshore temperatures ( P > 0.05), differences occurred in eggs exposed to a constant temperature, and they hatched almost three months sooner than inshore or offshore ones. Seasonal temperature fluctuations also appear to control the rates of biochemical processes in lobster eggs but may be confounded by other variables." @default.
- W4248585909 created "2022-05-12" @default.
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- W4248585909 date "2018-03-20" @default.
- W4248585909 modified "2023-09-28" @default.
- W4248585909 title "Biochemical changes throughout early- and middle-stage of embryogenesis in lobsters (Homarus americanus) under varying thermal regimes" @default.
- W4248585909 doi "https://doi.org/10.7287/peerj.preprints.26741v1" @default.
- W4248585909 hasPublicationYear "2018" @default.
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