{"id":47,"date":"2015-01-29T20:45:41","date_gmt":"2015-01-29T20:45:41","guid":{"rendered":"http:\/\/agri-research-journal.net\/SjarEn\/?p=47"},"modified":"2016-11-19T10:41:27","modified_gmt":"2016-11-19T10:41:27","slug":"issue1p3en","status":"publish","type":"post","link":"https:\/\/agri-research-journal.net\/SjarEn\/?p=47","title":{"rendered":"The Functional and Numerical Response of Predator Stethorus gilvifrons<\/em> Mulsant fed on Different Densities of the Spider Mite Tetranychus urticae<\/em> (Koch) in laboratory."},"content":{"rendered":"

Magda Mofleh(1)<\/sup>, AhmadMohammad(2)<\/sup>& MonzerHaloum(2)<\/sup><\/strong><\/p>\n

(1). Scientific Agricultural Research Centre of Lattakia, Lattakia, Syria.
\n(2). Department of Plant Protection, Faculty of Agriculture, Tishreen University, Lattakia, Syria.<\/p>\n

(Corresponding author: Dr. Magda MOFLEH: Scientific Agricultural Research Centre of Lattakia, Lattakia, Syria. E-mail:Magda.mofleh@yahoo.com<\/a>).<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/strong> Received: 24 \/ 09 \/ 2014\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Accepted: 01 \/ 12 \/ 2014<\/p>\n

Abstract:<\/strong><\/p>\n

The functional and numerical response of Stethorusv gilvifrons <\/em>on different densities of adult prey Tetranychus urticae <\/em>(Koch) was studied on leaf discs of Ricinus communis, <\/em>at temperature 30\u00b12\u00baC in laboratory. The predator consumed 4.04\u00b10.79 adults\/day, when prey density was 5 adults. The predator consumption increased with increasing prey density. At 50 preys the predator consumed 32.04\u00b18.3 adults\/day. Predation reached to 57.96\u00b110.9 adults\/day when prey density was 100 adults. So according Holling (1959) model of functional response, we put S. gilvifrons<\/em> predator under the third type (type III<\/strong>). The increase of prey density caused increasing in egg numbers of predator. The predator female didn’t lay any eggs when prey density was 5 adults. The predator began laid eggs in few numbers 0.29\u00b10.63 egg\/day when fed on 10 prey adults\/day, and these numbers of eggs laid by predator increased to 3.69\u00b12.3 egg\/day under prey density of 15 prey adult\/day. the increase of egg numbers reached to 21.2\u00b14.6 egg\/day when prey density was 100 prey\/day, so we noticed the predator oviposition increased with high prey density, and these increase caused by increase in predation efficiency and these lead to another kind of response called numerical response.<\/p>\n

Key words<\/strong>: Tetranychus urticae<\/em>, Stethorus gilvifrons<\/em>, Functional response, Numerical response.<\/p>\n

Full paper in Arabic:<\/h6>\n

\u0627\u0644\u0627\u0633\u062a\u062c\u0627\u0628\u0629 \u0627\u0644\u0648\u0638\u064a\u0641\u064a\u0629 \u0648\u0627\u0644\u0639\u062f\u062f\u064a\u0629 \u0644\u0644\u0645\u0641\u062a\u0631\u0633 Stethorus gilvifrons<\/em> \u0639\u0646\u062f \u062a\u063a\u0630\u064a\u062a\u0647 \u0639\u0644\u0649 \u0643\u062b\u0627\u0641\u0627\u062a \u0645\u062e\u062a\u0644\u0641\u0629 \u0645\u0646 \u0628\u0627\u0644\u063a\u0627\u062a \u0627\u0644\u0623\u0643\u0627\u0631\u0648\u0633 \u0627\u0644\u0639\u0646\u0643\u0628\u0648\u062a\u064a \u0630\u064a \u0627\u0644\u0628\u0642\u0639\u062a\u064a\u0646 Tetranychus urticae<\/em> \u0645\u062e\u0628\u0631\u064a\u0627\u064b.<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Magda Mofleh(1), AhmadMohammad(2)& MonzerHaloum(2) (1). Scientific Agricultural Research Centre of Lattakia, Lattakia, Syria. (2). Department of Plant Protection, Faculty of Agriculture, Tishreen University, Lattakia, Syria. (Corresponding author: Dr. Magda MOFLEH: Scientific Agricultural Research Centre of Lattakia, Lattakia, Syria. E-mail:Magda.mofleh@yahoo.com). \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[227],"tags":[50,51,49,48],"class_list":["post-47","post","type-post","status-publish","format-standard","hentry","category-vol1","tag-functional-response","tag-numerical-response","tag-stethorus-gilvifrons","tag-tetranychus-urticae"],"_links":{"self":[{"href":"https:\/\/agri-research-journal.net\/SjarEn\/index.php?rest_route=\/wp\/v2\/posts\/47","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agri-research-journal.net\/SjarEn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agri-research-journal.net\/SjarEn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agri-research-journal.net\/SjarEn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/agri-research-journal.net\/SjarEn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=47"}],"version-history":[{"count":7,"href":"https:\/\/agri-research-journal.net\/SjarEn\/index.php?rest_route=\/wp\/v2\/posts\/47\/revisions"}],"predecessor-version":[{"id":710,"href":"https:\/\/agri-research-journal.net\/SjarEn\/index.php?rest_route=\/wp\/v2\/posts\/47\/revisions\/710"}],"wp:attachment":[{"href":"https:\/\/agri-research-journal.net\/SjarEn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=47"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agri-research-journal.net\/SjarEn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=47"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agri-research-journal.net\/SjarEn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=47"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}