Claim · model-written summary
The hispine Ch. perplexa has one of the longest known larval developmental times for a nondiapausing chrysomelid, about 200 days.
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingQualifier
Verbatim
e0“The hispine Ch. perplexa has one of the longest larval developmental times known for a nondiapausing chrysomelid (°200 d)”
Title
Michael J. Auerbach; Donald R. Strong Ecological Monographs 1981. doi:10.2307/2937307
Other claims from this paper (18)
- Observation Foliar nitrogen in natural Heliconia imbricata (1.76%) was lower than in H. latispatha (3.01%).
- Observation Foliar nitrogen in natural Heliconia imbricata (1.76%) was lower than in Musa sp. (reported as .30%).
- Observation Oligophagous brassolid larvae generally had lower growth rates, food-use efficiencies and nitrogen accumulation rates on H. imbricata than on Musa sp.
- Observation Hispine larvae had lower relative consumption and growth rates than any of the lepidopterans examined on any host or treatment.
- Intervention effect Growth rates and nitrogen accumulation rates of hispine larvae were not changed by fertilizing the host plant.
- Association Nitrogen-use efficiency of hispines declined as foliar nitrogen content increased.
- Observation Several parameters of food use efficiency were correlated with the larvae's degree of feeding specialization.
- Observation Specialized hispines and oligophagous brassolids had higher food assimilation and nitrogen use efficiencies on H. imbricata than polyphagous limacodids and megalopygid.
- Observation Other efficiency indices such as net growth efficiency were not correlated with feeding specialization.
- Mechanism The slow growth of Ch. perplexa is correlated with a low metabolic rate, which the authors interpret as a physiological adaptation for starvation resistance.
- Observation Larvae feed only on rolled Heliconia leaves, which host plants produce infrequently, so long fasts are a predictable part of development.
- Observation The eight larval instars of Ch. perplexa are about equal in duration and closely match the period during which a rolled leaf is suitable as food.
- Observation Feeding of Ce. consanguinea larvae is apparently limited by moisture in this tropical rain forest.
- Observation Ce. consanguinea larvae have a high resistance to starvation.
- Observation The oligophagous brassolids have become pests of banana, which was introduced into the Americas.
- Association These species increase growth rates as the nitrogen content of host tissue increases.
- Observation The brassolids are infrequent on H. imbricata, which has few chemical defenses against herbivores.
- Mechanism The authors suggest the low nitrogen content of H. imbricata may protect it from some herbivory.