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Growth and Reproduction of Planorbarius corneus (Linnaeus, 1758) in Laboratory Conditions Cover

Growth and Reproduction of Planorbarius corneus (Linnaeus, 1758) in Laboratory Conditions

Open Access
|Aug 2021

Abstract

This study presents the results of observation on growth and reproduction of Planorbarius corneus (Linnaeus, 1758) (Gastropoda, Pulmonata) over the course of several years of continuous rearing in the laboratory in order to use them as test organisms for toxicity testing of chemicals. Some growth and reproduction features (shell diameter increase, fecundity, hatching time and rate, age at first reproduction, juvenile survival), which could provide more information for culturing P. corneus in the laboratory, are presented. The quantitative results of growth and reproduction in laboratory conditions were obtained: heterogenous growth varied between 0.1 mm and 5.3 mm in individual snails, production of 0.6 egg masses per snail/day and 11 eggs per snail/day. A statistically significant negative correlation between initial snail size and growth was noticed. In the second part of the experiment, the reproductive output of 4 isolated snails was compared to that of permanently grouped snails. As a result, 2-fold decreased growth and 4-fold decreased reproductive output in the progeny of isolated animals was noticed.

DOI: https://doi.org/10.2478/cjf-2021-0012 | Journal eISSN: 1848-0586 | Journal ISSN: 1330-061X
Language: English
Page range: 111 - 118
Submitted on: Oct 11, 2020
Accepted on: May 3, 2021
Published on: Aug 30, 2021
Published by: University of Zagreb, Faculty of Agriculture
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2021 Neda Mažuran, Goran Kovačević, published by University of Zagreb, Faculty of Agriculture
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.