<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>This study presents the results of observation on growth and reproduction of <italic>Planorbarius corneus</italic> (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 <italic>P. corneus</italic> 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.</p>
</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.

Growth and Reproduction of <italic>Planorbarius corneus</italic> (Linnaeus, 1758) in Laboratory Conditions

Division of Biology, Department of Zoology

Croatian Journal of Fisheries

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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

This study presents the results of observation on growth and reproduction of Planorbarius corneus (Linnaeus, 1758) (Gastropoda, Pulmonata) over the course of...

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

Published Online: Aug 30, 2021

Page range: 111 - 118

Received: Oct 11, 2020

Accepted: May 03, 2021

DOI: https://doi.org/10.2478/cjf-2021-0012

Keywords
Laboratory culture, Egg production, Growth dynamics, Progeny performance of isolated snails

© 2021 Neda Mažuran et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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

Published Online: Aug 30, 2021

Page range: 111 - 118

Received: Oct 11, 2020

Accepted: May 03, 2021

DOI: https://doi.org/10.2478/cjf-2021-0012

KeywordsLaboratory culture, Egg production, Growth dynamics, Progeny performance of isolated snails

© 2021 Neda Mažuran et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Keywords
Laboratory culture, Egg production, Growth dynamics, Progeny performance of isolated snails