Effects of the nonsteroidal ecdysone mimic RH 5849 on larval crustaceans
| Autor: | John D. Costlow, Anthony S. Clare, Dan Rittschof |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
medicine.medical_specialty
Larva animal structures biology Decapoda media_common.quotation_subject fungi Apolysis General Medicine Anatomy biology.organism_classification Rhithropanopeus harrisii chemistry.chemical_compound Endocrinology chemistry Internal medicine Ecdysis medicine Animal Science and Zoology Metamorphosis Moulting Ecdysone media_common |
| Zdroj: | Journal of Experimental Zoology. 262:436-440 |
| ISSN: | 1097-010X 0022-104X |
| DOI: | 10.1002/jez.1402620410 |
| Popis: | The effects of the nonsteroidal ecdysone mimic RH 5849 on larvae of a crab (Rhithropanopeus harrisii) and the cypris larva of a barnacle (Balanus amphitrite) have been investigated. Larvae were exposed to exogenous RH 5849 in the concentration range of 0.1–10.0 mg/L. The two lowest concentrations tested (0.1 and 1.0 mg/L) accelerated molting of crab zoeae. RH 5849 did not induce premature apolysis. A concentration of 10 mg/L RH 5849 was toxic to zoeae: these larvae underwent apolysis but not ecdysis and subsequently died. Attachment and metamorphosis of barnacle cyprids was enhanced by 10.0 mg/L RH 5849. Increased attachment may be a result of physiological aging of larvae by the ecdysone mimic. Increased metamorphosis is consistent with the stimulatory effect of 20-hydroxyecdysone on this process. RH 5849 was first demonstrated as an ecdysone mimic in insects (Wing, Science, 241:467–469, '88). The present study provides preliminary evidence for a similar action in crustaceans. © 1992 Wiley-Liss, Inc. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text