Movement patterns of juvenile and adult noble crayfish (Astacus astacus) in a small stream, determined by radiotelemetry

IF 0.9 4区环境科学与生态学 Q4 LIMNOLOGY

Annales De Limnologie-international Journal of Limnology Pub Date : 2019-01-01 DOI:10.1051/limn/2019018

T. Danek, J. Musil, Petr Vlašánek, J. Svobodová, Tereza Barteková, David Štrunc, Miroslav Barankiewicz, E. Bouše, E. Svobodová, S. Johnsen, Oddgeir Andersen

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引用次数: 1

Abstract

This article reports on the results of the first radiotelemetric field study comparing the movement patterns of juvenile and adult noble crayfish (Astacus astacus) over the 24-h cycle. During our study (in summer, outside the reproduction period), juveniles moved over significantly longer distances than adults; upstream movements prevailed in both groups. The longest distance covered by an individual crayfish during a three-hour interval was 110 m (in the upstream direction). Adults moved most frequently at dusk and least frequently during daytime. Among juveniles, the likelihood of movement did not significantly differ between the times of day; however, distances covered by juveniles were the longest at night and significantly shorter during daytime and at dusk. Juveniles and adults exhibited very similar local activity (motion within a single place) with high values at night and low values during daytime.

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小龙虾(Astacus Astacus)幼虾和成年小龙虾(Astacus Astacus)在小溪中的运动模式

本文报道了首次无线电遥测野外研究的结果，比较了幼虾和成年小龙虾(Astacus Astacus)在24小时周期内的运动模式。在我们的研究中(在夏季，繁殖期之外)，幼鱼比成年鱼移动的距离要远得多;上游运动在两个群体中都占了上风。每隔3小时，单个小龙虾游的最远距离为110米(上游)。成虫在黄昏时活动最频繁，白天活动最少。在幼鱼中，运动的可能性在一天中的不同时间之间没有显著差异;然而，幼鱼所覆盖的距离在夜间最长，在白天和黄昏明显缩短。幼鱼和成鱼表现出非常相似的局部活动(在一个地方的运动)，夜间高值，白天低值。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Annales De Limnologie-international Journal of Limnology 地学-湖沼学

CiteScore

2.20

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Annales de Limnologie - International Journal of Limnology publishes papers on the ecology of freshwater systems, ranging from studies of aquatic organisms, physical and chemical works which relate to the biological environment, to ecological applications and frameworks for water management directives. Main topics: Ecology of freshwater systems ; biodiversity, taxonomy, distribution patterns in space and time, biology of animals and plants ; experimental and conceptual studies which integrate laboratory and/or field work on physiology, population dynamics, biogeochemistry and nutrient dynamics, management, mathematical modelling ; techniques for sampling and chemical analyses, ecological applications, procedures which provide frameworks for environmental legislation.