134 research outputs found

    1971 Jay-Cee-An BJC -- Page 115

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    Photographs of BJC freshmen115 Elder, Mary Jane Ellis, Lynn Emerson, Paula Engstrom, Ronald Erling, Scott Fast, Tim Ferderer, James Fetch, Myron Fickenscher, Mark Fielhaber, William Flagg, Marshall Folk, Carol Folstrom, Diane Fox, Chuck Fox, John Fracassi, Len Frank, Mike Freeburg, Terry Frey, Marylin Fricke, Kathy Fricke, Randy Fuchs, Bruce Gartner, Constance Gaugler, Nanc

    The role of copulatory plugs in mosquito-parasitic nematode Strelkovimermis spiculatus

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    The mosquito-parasitic nematode, Strelkovimermis spiculatus (Mermithidae: Nematoda) emerges from hosts and aggregates to form mating clusters characterized by intense male-male competition for females. Successful males deposit a copulatory plug over the female vulva after mating. In choice experiments, males strongly preferred virgin females, whereas plugged females were ignored. Males were not observed attempting to remove the plug nor endeavoring to mate. Females with a copulatory plug repelled males. The observed chemical repellency was independent of females, since excised plugs alone showed the same negative male response. The plug contributes significantly to female fitness because removal of the plug after mating was found to reduce fecundity by 90%. About average of 805 spermatids were found to leak out from a female in the first 2 h after plug removal. Our initial hypothesis that the plug provides a nutritional gift was rejected due to the fact that there was no post-mating reduction in plug size that would have indicated absorption.M.S.Includes bibliographical referencesby Yu-Han La

    1972 Jay-Cee-An BJC -- Page 61

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    Photograph of BJC students who received awards and scholarships for academic achievementBJC Students awarded honors Sophomores selected for Who's Who Among American Junior College Students are, FRONT: Clyde Bauman, Ron Bickle, Nancy Gaugler, John MacMartin, SECOND ROW: Clyde Sebastian, Sue Kopp, Claire Anne Carmichael, Rene Constantine, Yvonne Moilanen, THIRD ROW: Linda Durey, Roberta Marone, Duane Schultz, Larry elson. STANDING: Brian Johnson, Randy icolai, Lee Toman. NOT PICTU RED: Bob Mazurek and Cheryl Wescott. 6

    Terrestrial Mollusc Pests

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    Oviposition Behavior of Chrysops atlanticus (Diptera: Tabanidae)

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    Volume: 92Start Page: 403End Page: 40
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