Biological, biochemical, hormonal effect, and histological perturbations of Procambarus clarkii (Crustacea: Cambaridae) hemolymph on Biomphalaria alexandrina snails

Theodor Bilharz Research Institute

Bibliographic Information

Authors: Hamdi S.A.H.; El-Monem S.A.; Ibrahim A.M.; Fol M.F.; Mostafa N.A.

Journal: Aquaculture International

Publisher: Springer Science and Business Media Deutschland GmbH

Publication Date: 9 May 2025

Volume / Issue: Volume 33 / Issue 5

Article No.: 328

ISSN: 9676120

DOI: 10.1007/s10499-025-01956-3

Scopus: View on Scopus

Document Type: Article

Access: All Open Access; Hybrid Gold Open Access

Authors and Affiliations

Hamdi S.A.H., Zoology Department, Faculty of Science, Cairo University, Giza, Egypt; El-Monem S.A., Zoology Department, Faculty of Science, Cairo University, Giza, Egypt; Ibrahim A.M., Medical Malacology Department, Theodor Bilharz Research Institute, Giza, Egypt; Fol M.F., Zoology Department, Faculty of Science, Cairo University, Giza, Egypt; Mostafa N.A., Zoology Department, Faculty of Science, Cairo University, Giza, Egypt

Abstract

Schistosomiasis is a severe illness carried by snails of the genus Biomphalaria, which have a large distribution in Egypt. Control of the intermediate host snail is critical in limiting schistosomiasis spread. On the topic of snails’ management, bioactive products extracted from aquatic invertebrates have gained more interest. Here, for the first time, the current research intended to identify the bioactive compounds present in hemolymph collected from the freshwater crayfish Procambarus clarkii and to assess its molluscidal activity against Biomphalaria alexandrina snails. Results showed that following exposure to the sub-lethal concentrations (LC10 34.9 and LC25 42.8 mg/l) of hemolymph, a reduction in survival and reproductive rates of B. alexandrina was detected, as well as a substantial increase in transaminases (AST and ALT) activities, while a reduction in total protein and albumin levels. Also, levels of testosterone and 17β-estradiol hormones decreased compared to the control group. Histopathological examination of the digestive gland of treated B. alexandrina displayed a shrinkage of the tubules and an increase in the inter-tubular spaces, and also, degeneration in the oocytes and spermatocytes of the hermaphrodite glands with a loss of connective tissues between the acini was observed. Thus, based on these results, a new strategy should be developed for a better use of these agents in schistosomiasis control. © The Author(s) 2025.

Keywords

Biochemical; Biomphalaria alexandrina; Hemolymph; Histopathology; Hormones; Procambrus clarkii; Egypt; biochemistry; crayfish; hormone; pest control; schistosomiasis; snail; sublethal effect; survival

Citation Information

Scopus Citations: 5

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