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Aberrant Spermatogenesis in Hybrid Progeny of Sub-Species of the Boll Weevil (Coleoptera: Curculionidae)

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Aberrant Spermatogenesis in Hybrid Progeny of Sub-Species of the Boll Weevil (Coleoptera: Curculionidae) Louisiana State University LSU Digital Commons LSU Historical Dissertations and Theses Graduate School 1973 Aberrant Spermatogenesis in Hybrid Progeny of Sub-Species of the Boll Weevil (Coleoptera: Curculionidae). Mary Laslie Grodner Louisiana State University and Agricultural & Mechanical College Follow this and additional works at: https://digitalcommons.lsu.edu/gradschool_disstheses Recommended Citation Grodner, Mary Laslie, "Aberrant Spermatogenesis in Hybrid Progeny of Sub-Species of the Boll Weevil (Coleoptera: Curculionidae)." (1973). LSU Historical Dissertations and Theses. 2462. https://digitalcommons.lsu.edu/gradschool_disstheses/2462 This Dissertation is brought to you for free and open access by the Graduate School at LSU Digital Commons. It has been accepted for inclusion in LSU Historical Dissertations and Theses by an authorized administrator of LSU Digital Commons. For more information, please contact [email protected]. INFORMATION TO USERS This material was produced from a microfilm copy of the original document. While the most advanced technological means to photograph and reproduce this document have been used, the quality is heavily dependent upon the quality of the original submitted. The following explanation of techniques is provided to help you understand markings or patterns which may appear on this reproduction. 1. The sign or "target" for pages apparently lacking from the document photographed is "Missing Page(s)". If it was possible to obtain the missing page(s) or section, they are spliced into the film along with adjacent pages. This may have necessitated cutting thru an image and duplicating adjacent pages to insure you complete continuity. 2. When an image on the film is obliterated with a large round black mark, it is an indication that the photographer suspected that the copy may have moved during exposure and thus cause a blurred image. You will find a good image of the page in the adjacent frame. 3. When a map, drawing or chart, etc., was part of the material being photographed the photographer followed a definite method in "sectioning" the material. It is customary to begin photoing at the upper left hand corner of a large sheet and to continue photoing from left to right in equal sections with a small overlap. If necessary, sectioning is continued again — beginning below the first row and continuing on until complete. 4. The majority of users indicate that the textual content is of greatest value, however, a somewhat higher quality reproduction could be made from "photographs" if essential to the understanding of the dissertation. Silver prints of "photographs" may be ordered at additional charge by writing the Order Department, giving the catalog number, title, author and specific pages you wish reproduced. 5. PLEASE NOTE: Some pages may have indistinct print. Filmed as received. Xerox University Microfilms 300 North Zeeb Road Ann Arbor, Michigan 48106 74-7224 GRODNER, Mary Laslie, 1935- ABERRANT SPERMATOGENESIS IN HYBRID PROGENY OF SUB-SPECIES OF THE BOLL WEEVIL (COLEOPTERA: CURCULIONIDAE). The Louisiana State University and Agricultural and Mechanical College, Ph.D., 1973 Entomology University Microfilms, A XEROXCompany, Ann Arbor, Michigan (c) 1973 MARY LASLIE GRODNER ALL RIGHTS RESERVED THIS DISSERTATION HAS BEEN MICROFILMED EXACTLY AS RECEIVED. ABERRANT SPERMATOGENESIS IN HYBRID PROGENY OF SUB-SPECIES OF THE BOLL WEEVIL (COLEOPTERA: CURCULIONIDAE) A Dissertation Submitted to the Graduate Faculty of the Louisiana State University and Agricultural and Mechanical College in partial fulfillment of the requirements for the degree of Doctor of Philosophy in The Department of Entomology by Mary Laslie Grodner A.B., Wesleyan College, 1955 M.S., Louisiana State University, 1957 August, 1973 ACKNOWLEDGMENTS The author gratefully acknowledges her indebtedness to Dr. N. W. Earle and the ARS, USDA, Cotton Insect Physi­ ology Investigations Laboratory for the help, space, ma­ terials, and equipment used throughout this investigation. She also wishes to thank Dr. L. D. Newsom of the Department of Entomology for his interest and help in this project; Dr. John J. Trimble III of the Department of Zoology and Physiology for his generous assistance with the electron microscopy and photography; Dr. Earl H. Weidner, Department of Zoology and Physiology, and Dr. M. D. Soco- lofsky and Gayle LoPiccolo of the Department of Micro­ biology for additional work with the electron microscope. Thanks are also given to Mr. John Jendrzejewski, Department of Geology, for the scanning electron micrographs, and Sue Ann Thompson, Department of Zoology and Physiology for preparing the carbon replicas and negative stained sperm. Sincere appreciation is expressed to Drs. H. B. Boudreaux, A. M. Hammond, W. L. French as well as to Drs. N. W. Earle, L. D. Newsom, and J. J. Trimble III for serv­ ing on her special advisory committee. TABLE OP CONTENTS Page ACKNOWLEDGMENTS .................................... ii LIST OF F I G U R E S .................................... iv ABSTRACT .......................................... vii INTRODUCTION ...................................... 1 SURVEY OF LITERATURE .............................. 3 METHODS AND MATERIALS .............................. 9 RESULTS AND DISCUSSION ........................... 16 CONCLUSIONS........................................ 34 LITFRATURE CITED .................................. 36 APPENDIX .......................................... 115 VITA .............................................. 116 ii i LIST OF FIGURES Figure Page 1. Male reproductive system ..................... 4 2. Female reproductive system ................... 4 3. Three-dimensional drawing of testis lobe . 8 4. Interpretive drawing showing various areas of spermatogenic activity ..................... 8 5. Standard curve for bovine serum albumin . 13 6. SEM of boll weevil sperm (2,600 X ) ........... 42 7. SEM of a portion of boll weevil sperm (10,400 X ) .................................. 44 8. Carbon replica of a portion of a boll weevil sperm (16,000 X ) ........................... 46 9. Carbon replica of portions of several boll weevil sperm (23,000 X) ................... 48 10. Carbon replica of anterior portion of boll weevil sperm (23,000 X) ................... 50 11. Portion of a negative stained sperm (23,000 X ) .................................. 52 12. TEM showing seminal vesicle sperm, showing wall of seminal vesicle (7 ,800 X ) ........ 54 13. TEM, longitudinal sections of boll weevil sperm (11,000 X ) ........................... 56 14. TEM, longitudinal section of boll weevil sperm (30,800 X ) ........................... 58 15. TEM, longitudinal section of boll weevil sperm (30,800 X ) ........................... 60 16. TEM, longitudinal section of boll weevil sperm (37,000 X ) ........................... 62 iv 17. TEM, longitudinal section of boll weevil sperm (33,000 X ) ........................... 64 18. TEM cross sections of boll weevil sperm (97,000 X ) .................................. 66 19. TEM cross sections of boll weevil sperm (46,000 X ) .................................. 68 20. TEM cross sections of boll weevil sperm (61,000 X ) .................................. 70 21. TEM cross sections of boll weevil sperm (64,000 X ) .................................. 72 22. TEM cross and longitudinal sections of boll weevil sperm (44,000 X) .................... 74 23. LM, normal boll weevil testis section (300 X ) .................................... 76 24. LM, section of thurberia testis (560 X) , . 78 25. LM, section of Louisiana hybrid testis (300 X ) .................................... 80 26. LM, section Mexico hybrid testis (300 X) , . 82 27. LM, section Mexico hybrid testis (760 X) . 84 28. TEM cross section of spermatids in boll weevil testis (23,400X) .................... 86 29. TEM cross section of spermatids in boll weevil testis (68,000X) ................... 88 30. TEM cross sections of spermatids of thurberia testis (20,000 X ) ......................... 90 31. TEM of section of Louisiana hybrid testis (43,000 X ) ................................. 92 32. TEM section of Louisiana hybrid testis (22,000 X ) ................................. 94 33. TEM section of Louisiana hybrid testis (22,000 X ) ................................. 96 34. TEM section of Louisiana hybrid testis (15,000 X ) ................................. 98 v 35. TEM section of Louisiana hybrid testis (12,000 X ) .................................. 100 36. TEM section of Louisiana hybrid testis (22,000 X ) .................................. 102 37. TEM section of Mexico hybrid testis (22,000 X ) .................................. 104 38. TEM section of Mexico hybrid testis (19,000 X ) .................................. 106 39. TEM section of Mexico hybrid testis (19,000 X ) .................................. 108 40. TEM section of Mexico hybrid testis (29,000 X ) .................... '........... 110 41. TEM section of Mexico hybrid testis (40,000 X ) .................................. 112 42. Male reproductive system of the boll weevil (32 X ) ...................................... 114 vi ABSTRACT Studies were undertaken to ascertain the mechanism(s) involved in the hybrid sterility found in the males of the cross between Anthonomus grandis thurberiae males and Anthonomus grandis grandis females. It was found that the entire process of spermatogenesis was disrupted and very chaotic in the hybrid males. Several reasons are discussed that may account for this condition. The ultrastructure of the sperm
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