The Effects of Population Density on the Incidence of Developmental Deformities in Chemosensory Organs of Tobacco Hornworm Larvae (Lepidoptera: Sphingidae)
| Autor: | Alexander Bohorquez, Frank E. Hanson, Elizabeth Stanwyck |
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| Rok vydání: | 2020 |
| Předmět: |
AcademicSubjects/SCI01382
0106 biological sciences animal structures Chemoreceptor larval culture Sphingidae Zoology 01 natural sciences Population density Lepidoptera genitalia 03 medical and health sciences stomatognathic system Manduca Animals Research Articles life history traits larval crowding 030304 developmental biology Antenna (biology) Population Density 0303 health sciences Larva biology fungi technology industry and agriculture General Medicine biology.organism_classification Chemoreceptor Cells Arthropod mouthparts chemosensilla 010602 entomology Manduca sexta chemosensory deformation Insect Science |
| Zdroj: | Journal of Insect Science |
| ISSN: | 1536-2442 |
| Popis: | Cultures of Manduca sexta Johanssen in our laboratory were found to have larvae with missing or deformed mouthparts or antennae. Hypothesizing that these developmental deformities were caused by crowded rearing conditions, we reared larvae in four different population densities and recorded the incidence (% of larvae affected) and types of chemoreceptor deformities. Results showed that the incidence of these deformities was directly proportional to larval population density. Deformities of the maxilla and palp were the most frequent, followed by those of the antenna, epipharynx and maxillary styloconica. Life history traits of larval mass, food consumption, and rate of development were inversely related to larval density for both normal and deformed larvae. We discuss possible causes and mechanisms of these deformities and of changes to life history traits. |
| Databáze: | OpenAIRE |
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