Spermiogenesis of Heliothis virescens (Lepidoptera: Noctuidae): an Ultrastructure Study of Eupyrene Sperm in Sterile Backcross Males

Spermiogenesis of Heliothis virescens (Lepidoptera: Noctuidae): An Ultrastructure Study of Eupyrene Sperm in Sterile Backcross Males

Sterile backcross (Be) males originate from the hybridization of Heliothis subflexa (Guennee) females to H. virescens (F.) males followed by recurrent backcrossing of the fertile female progeny to H. virescens males. Ultrastructural transmission electron microscope (TEM) studies of the postmeiotic maturation of eupyrene sperm cells in Be males, and comparisons with the cells in normal H. viresc...

Spermiogenesis of Heliothis virescens (Lepidoptera: Noctuidae): An Ultrastructure Study of Eupyrene Sperm in Sterile Backcross Males

Sterile backcross (Be) males originate from the hybridization of Heliothis subflexa (Guennee) females to H. virescens (F.) males followed by recurrent backcrossing of the fertile female progeny to H. virescens males. Ultrastructural transmission electron microscope (TEM) studies of the postmeiotic maturation of eupyrene sperm cells in Be males, and comparisons with the cells in normal H. viresc...

Spermiogenesis of Eupyrene Sperm in Prepupae"} Pupae"} and Adults of Heliothis virescens (Lepidoptera: Noctuidae): An Ultrastructural Study

Ann. Entomol. Soc. Am. 81(2): 292-300 (1988) ABSTRACT We have examined the ultrastructure of post meiotic eupyrene sperm maturation in testes of prepupae, pupae, and adult Heliothis virescens (F.) males. Emphasis was placed on the structures present in the elongating sperm tail. In each young spermatid, each cell has a nucleus, acrosome derivative, and numerous mitochondria in a large volume of...

Spermiogenesis of Eupyrene Sperm in Prepupae"} Pupae"} and Adults of Heliothis virescens (Lepidoptera: Noctuidae): An Ultrastructural Study

RNA-Seq Study of Microbially Induced Hemocyte Transcripts from Larval Heliothis virescens (Lepidoptera: Noctuidae)

Larvae of the tobacco budworm are major polyphagous pests throughout the Americas. Development of effective microbial biopesticides for this and related noctuid pests has been stymied by the natural resistance mediated innate immune response. Hemocytes play an early and central role in activating and coordinating immune responses to entomopathogens. To approach this problem we completed RNA-seq...