摘要
Editor's note:zoaa018,which includes one figure,was accepted on 31 March 2020.In August 2020,a new journal policy,available at https:/academic.oup.com/cz/pages/General_Instructions,requires a specified number of figures/tables in a Letter to the Editor:The letter should include no more than two tables/or two figures/or one figure plus one table.After learning this policy,the first author wrote on 4 February 2021 asking to change their work from an ARTICLE to a LETTER TO THE EDITOR.The editors appreciate and agree to the author's request.