Digestive enzyme activities of Penaeus notialis during reproduction and moulting cycle

Comparative Biochemistry and Physiology Part A: Physiology Pub Date : 1997-12-01 DOI:10.1016/S0300-9629(97)86802-8

Isis Fernández , Mario Oliva , Olympia Carrillo , Alain Van Wormhoudt

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引用次数: 39

Abstract

The degree of ovarian maturation and the specific activities in hepatopancreas and stomach of amylase, trypsin, chymotrypsin, carboxypeptidase A and B and leucine aminopeptidase were determined at different stages of the moulting cycle of wild female pink shrimp Penaeus notialis. Ovarian maturation appeared from intermoult stage C₁–C₂ to early premoult stage D₁. The highest values for amylase in stomach and hepatopancreas ocurred at stages D₁ and B₂ to C₃–C₄, respectively. Total proteolytic activity in the hepatopancreas was highest in stages B₂ to C₃–C₄, and in the stomach the highest value was observed in D₁. For the endopeptidases, the highest value was for trypsin TAME in stomach during stage D₁ and in the hepatopancreas at stage C₁–C₂. The exopeptidases showed peaks in hepatopancreas in stages C₁–C₂ and C₃–C₄. Leucine aminopeptidase showed the lowest proteolytic values and peaks in stomach were observed at stages C₃–C₄ and D₂.

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东北对虾繁殖和蜕皮过程中的消化酶活性

测定了野生雌性粉对虾蜕皮周期不同阶段的卵巢成熟程度以及淀粉酶、胰蛋白酶、糜蛋白酶、羧肽酶A和B以及亮氨酸氨基肽酶在肝胰腺和胃中的特异性活性。卵巢成熟出现在产褥期C1–C2至产褥前期D1。胃和肝胰腺淀粉酶的最高值分别出现在D1和B2至C3–C4阶段。肝胰腺中的总蛋白水解活性在B2至C3–C4阶段最高，在胃中观察到的最高值在D1阶段。对于内肽酶，胰蛋白酶TAME在D1阶段的胃中和在C1-C2阶段的肝胰腺中的值最高。外肽酶在肝胰腺的C1–C2和C3–C4阶段出现峰值。亮氨酸氨基肽酶显示出最低的蛋白水解值，在C3–C4和D2阶段在胃中观察到峰值。

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Comparative Biochemistry and Physiology Part A: Physiology

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