Influence of light and temperature on reproduction and moulting frequency of the crayfish, Astacus astacus L
The effects of light and temperature on reproduction and growth in the noble crayfish, Astacus astacus L., were investigated. In natural habitats reproduction starts in October when the daylength and temperature are decreasing. Moulting takes place during summer in high water temperatures. In the ex...
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| Veröffentlicht in: | Aquaculture 1986-02, Vol.52 (1), p.43-50 |
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| creator | Westin, Lars Gydemo, Rolf |
| description | The effects of light and temperature on reproduction and growth in the noble crayfish,
Astacus astacus L., were investigated. In natural habitats reproduction starts in October when the daylength and temperature are decreasing. Moulting takes place during summer in high water temperatures. In the experiments, reproduction and moulting took place under different light conditions: increasing, decreasing, and artificial (constant and light:dark 5:7). The trigger mechanism in the case of reproduction was a decrease in temperature, and in moulting, an increase in temperature. The light regime thus plays a subordinate role. By doubling the yearly temperature cycle on a 1-year basis, two periods of reproduction and moulting resulted.
Egg development, which in nature takes up to 9 months, was shortened to 4 months by increasing the temperature. The possibilities of influencing the time of reproduction and egg development could also result in the production of offspring at times when they do not occur naturally. |
| doi_str_mv | 10.1016/0044-8486(86)90106-7 |
| format | Article |
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Astacus astacus L., were investigated. In natural habitats reproduction starts in October when the daylength and temperature are decreasing. Moulting takes place during summer in high water temperatures. In the experiments, reproduction and moulting took place under different light conditions: increasing, decreasing, and artificial (constant and light:dark 5:7). The trigger mechanism in the case of reproduction was a decrease in temperature, and in moulting, an increase in temperature. The light regime thus plays a subordinate role. By doubling the yearly temperature cycle on a 1-year basis, two periods of reproduction and moulting resulted.
Egg development, which in nature takes up to 9 months, was shortened to 4 months by increasing the temperature. The possibilities of influencing the time of reproduction and egg development could also result in the production of offspring at times when they do not occur naturally.</description><identifier>ISSN: 0044-8486</identifier><identifier>EISSN: 1873-5622</identifier><identifier>DOI: 10.1016/0044-8486(86)90106-7</identifier><identifier>CODEN: AQCLAL</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Astacus astacus ; Biochemistry. Physiology. Immunology ; Biological and medical sciences ; Crustacea ; Freshwater ; Fundamental and applied biological sciences. Psychology ; Invertebrates ; Physiology. Development</subject><ispartof>Aquaculture, 1986-02, Vol.52 (1), p.43-50</ispartof><rights>1986</rights><rights>1987 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c366t-8f47d3008679cf3c1755aa3c12a677f1fbbded0abc1169ef706067b236f207553</citedby><cites>FETCH-LOGICAL-c366t-8f47d3008679cf3c1755aa3c12a677f1fbbded0abc1169ef706067b236f207553</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/0044848686901067$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=7905404$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Westin, Lars</creatorcontrib><creatorcontrib>Gydemo, Rolf</creatorcontrib><title>Influence of light and temperature on reproduction and moulting frequency of the crayfish, Astacus astacus L</title><title>Aquaculture</title><description>The effects of light and temperature on reproduction and growth in the noble crayfish,
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Egg development, which in nature takes up to 9 months, was shortened to 4 months by increasing the temperature. The possibilities of influencing the time of reproduction and egg development could also result in the production of offspring at times when they do not occur naturally.</description><subject>Astacus astacus</subject><subject>Biochemistry. Physiology. Immunology</subject><subject>Biological and medical sciences</subject><subject>Crustacea</subject><subject>Freshwater</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Invertebrates</subject><subject>Physiology. Development</subject><issn>0044-8486</issn><issn>1873-5622</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1986</creationdate><recordtype>article</recordtype><recordid>eNp9kE1LAzEQhoMoWKv_wEMOIgquTnazyfYilOJHoeBFzyGbTdrIftQkK_Tfm9jiURh4GeZ5J5MXoUsC9wQIewCgNKtoxW4qdjsDAizjR2hCKl5kJcvzYzT5Q07RmfefAMBYSSaoXfamHXWvNB4Mbu16E7DsGxx0t9VOhtHFQY-d3rqhGVWwsUnzbhjbYPs1Nk5_Jf8u-cNGY-Xkzli_ucNzH6QaPZYHXZ2jEyNbry8OOkUfz0_vi9ds9fayXMxXmSoYC1llKG8KgIrxmTKFIrwspYyaS8a5IaauG92ArBUhbKYNBwaM13nBTA6RLaboer83Hh2P80F01ivdtrLXw-gFoSWjAAmke1C5wXunjdg620m3EwREilak3ETKTcT6jVbwaLs67JdeydY42Svr_7x8BiUFGrHHPabjX7-tdsIrm6JurNMqiGaw_7_zA_lejdc</recordid><startdate>19860201</startdate><enddate>19860201</enddate><creator>Westin, Lars</creator><creator>Gydemo, Rolf</creator><general>Elsevier B.V</general><general>Elsevier Science</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>C1K</scope><scope>F1W</scope><scope>H95</scope><scope>H97</scope><scope>H98</scope><scope>L.G</scope></search><sort><creationdate>19860201</creationdate><title>Influence of light and temperature on reproduction and moulting frequency of the crayfish, Astacus astacus L</title><author>Westin, Lars ; Gydemo, Rolf</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c366t-8f47d3008679cf3c1755aa3c12a677f1fbbded0abc1169ef706067b236f207553</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1986</creationdate><topic>Astacus astacus</topic><topic>Biochemistry. Physiology. Immunology</topic><topic>Biological and medical sciences</topic><topic>Crustacea</topic><topic>Freshwater</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Invertebrates</topic><topic>Physiology. Development</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Westin, Lars</creatorcontrib><creatorcontrib>Gydemo, Rolf</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 1: Biological Sciences & Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 3: Aquatic Pollution & Environmental Quality</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Aquaculture Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><jtitle>Aquaculture</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Westin, Lars</au><au>Gydemo, Rolf</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Influence of light and temperature on reproduction and moulting frequency of the crayfish, Astacus astacus L</atitle><jtitle>Aquaculture</jtitle><date>1986-02-01</date><risdate>1986</risdate><volume>52</volume><issue>1</issue><spage>43</spage><epage>50</epage><pages>43-50</pages><issn>0044-8486</issn><eissn>1873-5622</eissn><coden>AQCLAL</coden><abstract>The effects of light and temperature on reproduction and growth in the noble crayfish,
Astacus astacus L., were investigated. In natural habitats reproduction starts in October when the daylength and temperature are decreasing. Moulting takes place during summer in high water temperatures. In the experiments, reproduction and moulting took place under different light conditions: increasing, decreasing, and artificial (constant and light:dark 5:7). The trigger mechanism in the case of reproduction was a decrease in temperature, and in moulting, an increase in temperature. The light regime thus plays a subordinate role. By doubling the yearly temperature cycle on a 1-year basis, two periods of reproduction and moulting resulted.
Egg development, which in nature takes up to 9 months, was shortened to 4 months by increasing the temperature. The possibilities of influencing the time of reproduction and egg development could also result in the production of offspring at times when they do not occur naturally.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/0044-8486(86)90106-7</doi><tpages>8</tpages></addata></record> |
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| ispartof | Aquaculture, 1986-02, Vol.52 (1), p.43-50 |
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| source | Elsevier ScienceDirect Journals |
| subjects | Astacus astacus Biochemistry. Physiology. Immunology Biological and medical sciences Crustacea Freshwater Fundamental and applied biological sciences. Psychology Invertebrates Physiology. Development |
| title | Influence of light and temperature on reproduction and moulting frequency of the crayfish, Astacus astacus L |
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