{"id":4290,"date":"2015-04-20T15:51:13","date_gmt":"2015-04-20T19:51:13","guid":{"rendered":"http:\/\/carleton.ca\/biology\/?post_type=cu_event&#038;p=4290"},"modified":"2026-02-23T15:51:57","modified_gmt":"2026-02-23T20:51:57","slug":"dr-gita-kolluru","status":"publish","type":"cu_event","link":"https:\/\/carleton.ca\/biology\/event\/dr-gita-kolluru\/","title":{"rendered":"Dr Gita Kolluru"},"content":{"rendered":"<header class=\"mb-6 cu-pageheader cu-component-updated md:mb-12\">\n    <h1 class=\"cu-prose-first-last font-semibold !mt-2 mb-4 md:mb-6 text-3xl md:text-4xl lg:text-5xl lg:leading-[3.5rem] relative after:absolute after:h-px after:bottom-0 pb-5 after:w-10 after:bg-cu-red after:left-px\">\n        \n    <\/h1>\n    \n        <\/header>\n\n    \n    \n    \n    \n    <div class=\"cu-buttongroup cu-component-updated flex flex-wrap md:flex-1 gap-3 md:gap-5 justify-start\">\n                                                                        <\/div>\n    \n<p><strong>Factors influencing mating behavior&nbsp;in poeciliid fishes<\/strong><\/p>\n\n\n\n<p>Gita Kolluru, PhD<br>\nAssociate Professor<br>\nCalifornia Polytechnic State University<\/p>\n\n\n\n<p>Abstract:&nbsp;Males of some poeciliid \u001fshes court females prior to copulation, whereas others perform&nbsp;sneak copulations only. Based on prior studies, the following predictions emerge: 1) in&nbsp;courting species, males should reduce conspicuous behavior including courtship, under&nbsp;risky conditions; 2) males in courting species should possess relatively short gonopodia&nbsp;to minimize costs and because selection favoring longer gonopodia is reduced; 3) specis<br>\nwith courtship should be sexually dichromatic, and the coloration should be sexually&nbsp;selected. Our work focuses on the guppy (Poecilia reticulata), an extremely well studied,&nbsp;sexually dichromatic, courting species with short gonopodia, and Girardinus metallicus,&nbsp;a species about which little is known. We tested prediction 1) by examining guppy&nbsp;behavior in low and high light conditions. Courtship displays were reduced under risky&nbsp;high light conditions, but the equally conspicuous aggressive behavior was not&nbsp;in\u001euenced. Females were less responsive to courtship under high light, suggesting that&nbsp;behavioral \u001eexibility is driven by the reactions of females, such that low light conditions&nbsp;represent high payo\u001d for males, rather than just low risk. We tested predictions 2) and 3)<br>\nby examining a morph of G. metallicus that had not been previously studied. We found&nbsp;that males possess long gonopodia, but are sexually dichromatic and exhibit courtship&nbsp;display, contradicting prediction 2). This may be because the gonopodium itself is part of&nbsp;the display in this morph. Consistent with prediction 3), the prominent ventral black&nbsp;coloration in these males appears to be sexually selected via male-male competition.&nbsp;Previous studies of poeciliids have a\u001dorded detailed information about a few species&nbsp;such as the guppy; however, understanding the breadth of diversity and phylogenetic&nbsp;patterns of trait evolution in poeciliids requires studies of lesser-known species.<\/p>\n","protected":false},"author":2,"featured_media":0,"template":"","meta":{"_acf_changed":false,"footnotes":"","_links_to":"","_links_to_target":""},"cu_event_type":[],"cu_event_audience":[],"class_list":["post-4290","cu_event","type-cu_event","status-publish","hentry"],"acf":{"cu_event_start_date":"2015-04-24T15:30:00","cu_event_end_date":"2015-04-24T16:30:00","cu_event_location_type":"in-person","cu_event_meeting_address_type":"on-campus","cu_building":"TT","cu_event_meeting_room":"4440Q","cu_event_meeting_address_full":null,"cu_event_virtual_type":"tbd","cu_event_virtual_meeting_link":"","cu_post_thumbnail":"event-mic","cu_event_cost":"","cu_event_registration":"","cu_event_secondary_button":"","cu_event_contact_name":"Andrew Simons","cu_event_email":"andrew.simons@carleton.ca ","cu_event_phone":""},"_links":{"self":[{"href":"https:\/\/carleton.ca\/biology\/wp-json\/wp\/v2\/cu_event\/4290","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/carleton.ca\/biology\/wp-json\/wp\/v2\/cu_event"}],"about":[{"href":"https:\/\/carleton.ca\/biology\/wp-json\/wp\/v2\/types\/cu_event"}],"author":[{"embeddable":true,"href":"https:\/\/carleton.ca\/biology\/wp-json\/wp\/v2\/users\/2"}],"version-history":[{"count":1,"href":"https:\/\/carleton.ca\/biology\/wp-json\/wp\/v2\/cu_event\/4290\/revisions"}],"predecessor-version":[{"id":4293,"href":"https:\/\/carleton.ca\/biology\/wp-json\/wp\/v2\/cu_event\/4290\/revisions\/4293"}],"wp:attachment":[{"href":"https:\/\/carleton.ca\/biology\/wp-json\/wp\/v2\/media?parent=4290"}],"wp:term":[{"taxonomy":"cu_event_type","embeddable":true,"href":"https:\/\/carleton.ca\/biology\/wp-json\/wp\/v2\/cu_event_type?post=4290"},{"taxonomy":"cu_event_audience","embeddable":true,"href":"https:\/\/carleton.ca\/biology\/wp-json\/wp\/v2\/cu_event_audience?post=4290"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}