Stress conditions extend maternal care and delay juvenile development in crayfish

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-04-12 DOI:10.1093/cz/zoae017

Davinder Kaur, Koushik Das, Jan Kubec, Miloš Buřič

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Abstract

Maternal care in crayfish has been extensively studied, but little is known of its response to environmental factors. We studied the duration of maternal care and its association with the juvenile development of marbled crayfish Procambarus virginalis in adverse environmental conditions. We exposed females with developmental stage 3 juveniles to environments of low water volume (LW) with food provided, low water volume with no feed (starvation) (LWS), and low water volume without feeding plus an intruder (red swamp crayfish male) (LWSI). A control group with standard water level/feed conditions was included for comparison. Groups were monitored for up to 90 days. The LWS group showed significantly prolonged maternal care (~65 days) as indicated by an extended attachment phase, delayed moulting of mothers (~53 days), and retarded juvenile development. In the LWSI group, conflict precluded extended maternal care. Low use of shelter and feeding was evident under all stress conditions. The results showed that crayfish females modify maternal care in accordance with conditions, providing a longer period of safety for offspring under adverse circumstances. It is possible that the expression of maternal pheromones can manipulate the developmental rate in juveniles, a topic for future research.

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压力条件会延长母体对小龙虾的照顾并延迟幼体发育

人们对小龙虾的母体照料进行了广泛的研究，但对其对环境因素的反应却知之甚少。我们研究了大理石纹螯虾在不利环境条件下的母体照料持续时间及其与幼体发育的关系。我们将携带发育阶段3幼体的雌性暴露于提供食物的低水量环境（LW）、不喂食的低水量环境（饥饿）（LWS）和不喂食的低水量环境加入侵者（红色沼泽小龙虾雄性）（LWSI）。还包括一个标准水位/喂食条件的对照组，以进行比较。对各组进行了长达 90 天的监测。LWS组的母性照料时间明显延长（约65天），表现为依恋期延长、母体蜕皮延迟（约53天）和幼体发育迟缓。在 LWSI 组中，冲突导致母性照料时间延长。在所有应激条件下，庇护所和喂食的使用率都很低。结果表明，雌性小龙虾会根据情况改变母性照顾，在不利条件下为后代提供更长的安全期。母性信息素的表达有可能操纵幼体的发育速度，这也是未来研究的一个课题。

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

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.