The Effects of Thyroxine Hormone on Gonadal Maturation and Growth of Male Spiny Lobster (Panulirus Homarus)

Adiputra, Yudha Trinoegraha; Zairin, Muhammad; Suprayudi, Muhammad Agus; Manalu, Wasmen; Widanarni, Widanarni; Brite, Margie

doi:10.22452/mjs.vol39no1.3

Cited by 2 publications

(1 citation statement)

References 17 publications

(15 reference statements)

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“…Further studies showed that injections of T4 promoted the development of embryos to hatching eggs depending on dosage, with the best results at 0.15 and 0.1 µg g -1 [15]. Adiputra et al [49] have shown that injection of T4 at a dose of 0.1 µg g -1 can induce a higher growth rate and better gonad development in male spiny lobsters of Panulirus homarus. Jayaprakas and Sambhu [50] found that thyroxine incorporated into a prepared diet promoted growth and feed utilization of white prawns of Penaeus indicus, being the most effective at 0.04 ppm.…”

Section: Discussionmentioning

confidence: 99%

Thyroid Hormones in Hemolymph of Red King Crabs from the Barents Sea

Dvoretsky

Типисова

Popkova

et al. 2022

Animals

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Only a few studies have reported the presence and levels of thyroid hormones in invertebrates. At the same time, the administration of these hormones has been shown to be a profitable method for inducing growth in crustaceans. Knowledge of thyroid hormone concentrations is required to involve this approach in crustacean aquaculture. For this reason, we examined hemolymph samples of the invasive red king crab Paralithodes camtschaticus from the Barents Sea population for the levels of triiodothyronine (T3) and thyroxine (T4). Radioimmunoassays indicated that T3 ranged from 0.26 to 1.55 μg dL–1, whereas T4 varied from 52 to 203 μg dL–1. Adult crabs demonstrated higher levels of T3 than juveniles, while juvenile crabs had higher levels of T4 in comparison to larger conspecifics. The thyroxine levels were consistent throughout the study period. In contrast, significant seasonal variations were found for T3. In immature crabs, the maximum concentration was found in October, whereas in adult crabs, the highest level of T3 was registered in August. Most likely, these results are explained by changes in physiological conditions of the crabs associated with their molting calendar and migration activity. Our data may have important implications for aquaculture of Paralithodes camtschaticus in the Barents Sea.

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Section: Discussionmentioning

confidence: 99%

Thyroid Hormones in Hemolymph of Red King Crabs from the Barents Sea

Dvoretsky

Типисова

Popkova

et al. 2022

Animals

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The Photoperiod Significantly Influences the Growth Rate, Digestive Efficiency, Immune Response, and Antioxidant Activities in the Juvenile Scalloped Spiny Lobster (Panulirus homarus)

Wang,

Yang,

et al. 2024

JMSE

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This study aimed to elucidate the effects of different photoperiods (0 L:24 D, 6 L:18 D, 12 L:12 D, 18 L:6 D, 24 L:0 D, “Light (L) and Dark (D)”) on the growth performance and physiological responses of the juvenile scalloped spiny lobster (Panulirus homarus). Over a period of 56 days, parameters such as growth rate, digestive enzyme, immune enzyme, and antioxidant enzyme were meticulously evaluated in 90 lobsters subjected to these varying light conditions. The present study found no significant differences in survival rate (SR), molting frequency (MF), and meat yield production (MYP) among the various photoperiod treatments (p > 0.05). Notably, the highest weight gain rate (WGR) and specific growth rate (SGR) were observed under a 12 L:12 D photoperiod. In the continuous dark phase (0 L:24 D), pepsin (PEP) activity remained high in gastric tissues, while trypsin (TRYP) and chymotrypsin (CHT) activities reached the highest in hepatopancreas tissues. The α-amylase (AMS) activity in the hepatopancreas was most elevated under 18 L:6 D, and the optimal lipase (LPS) activity was recorded under 12 L:12 D. The activity of acid phosphatase (ACP) in the hepatopancreas was highest in the absence of light (0 L:24 D), whereas the activities of alkaline phosphatase (AKP) and lysozyme (LZM) were most effective under the 12 L:12 D photoperiod. The total antioxidant capacity (T-AOC), along with catalase (CAT) and superoxide dismutase (SOD) activities of the hepatopancreas reached the highest at 12 L:12 D. The highest activity of glutathione peroxidase (GSH-Px) was seen under 18 L:6 D. The concentration of malondialdehyde (MDA), a marker of oxidative stress, was found to be highest under 12 L:12 D. Consequently, this specific photoperiod is essential for achieving optimal growth and maintaining appropriate physiological balance in the scalloped spiny lobster during aquaculture. These findings provide a foundational guideline for establishing the lighting environment in the farming of the juvenile scalloped spiny lobster.

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The Effects of Thyroxine Hormone on Gonadal Maturation and Growth of Male Spiny Lobster (Panulirus Homarus)

Cited by 2 publications

References 17 publications

Thyroid Hormones in Hemolymph of Red King Crabs from the Barents Sea

Thyroid Hormones in Hemolymph of Red King Crabs from the Barents Sea

The Photoperiod Significantly Influences the Growth Rate, Digestive Efficiency, Immune Response, and Antioxidant Activities in the Juvenile Scalloped Spiny Lobster (Panulirus homarus)

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