Development, reproduction and life table parameters of Tetranychus phaselus Ehara (Acari: Tetranychidae) on two bean host plants

Acarologia, Journal Year: 2025, Volume and Issue: 65(1), P. 197 - 203

Published: March 24, 2025

Investigations into the life history characteristics of pests on host plants can provide important information pest forecast and management. Tetranychus phaselus Ehara is a polyphagous distributed in China, Russia, Japan Korea. Glycine max Phaseolus vulgaris are two most economically crops T. phaselus, increasing planting area may facilitate occurrence pest. Here we investigated development, survival, reproduction table parameters G. P. how these traits vary between plants. We showed that developmental period from egg to adult was significantly shorter than for both males females. had higher hatchability egg-to-adult survival max. different lifetime reproductive pattern produced more daily number eggs vulgaris. females fed intrinsic rate increase (r_m) net (Ro) generation time (T) doubling (Dt). These results suggest (soybean) favorable plant beans particularly soybeans phaselus.

Language: Английский

Conspecific cues mediate habitat selection and reproductive performance in a haplodiploid spider mite

Current Zoology, Journal Year: 2024, Volume and Issue: 70(6), P. 795 - 802

Published: March 29, 2024

Abstract Selection of a suitable habitat by animals before settlement is critical for their survival and reproduction. In silk-spinning arthropods like spider mites, denser webs offer protection from predation serve as dispersal mode. Settling in habitats with the presence conspecifics silk can benefit habitat-searching females. Silk usually coexist, but distinct effects on female colonization have received little attention. this study, we used haplodiploid mite, Tetranychus ludeni Zacher (Acari: Tetranychidae), to examine impact conspecific cues, including cues ovipositing silk, selection subsequent reproductive performance Results show that females significantly preferred neighboring induced additive effect selection. Conspecific did not boost reproduction facilitated laying larger eggs were more likely be fertilized develop into daughters. When given choice between silk-covered clean habitats, laid similar number size, produced daughters, suggesting T. adjust size threshold fertilization response current social environment. Knowledge study improves our understanding mite post-settlement behaviors.

Language: Английский

Reproductive plasticity in response to the changing cluster size during the breeding period: a case study in a spider mite

Experimental and Applied Acarology, Journal Year: 2023, Volume and Issue: 91(2), P. 237 - 250

Published: Aug. 31, 2023

Abstract Animals living in clusters should adjust their reproductive strategies to adapt the social environment. Theories predict that benefits of cluster would outweigh costs competition. Yet, it is largely unknown how animals optimize fitness response changing environment during breeding period. We used Tetranychus ludeni Zacher, a haplodiploid spider mite, investigate ovipositing females modified life-history traits change size (i.e., aggregation and dispersal) with consistent population density (1 ♀/cm 2 ). demonstrate (1) after were shifted from large (16 ♀♀) small ones ♀, 5 10 ♀♀), they laid fewer larger eggs higher female-biased sex ratio; (2) one, smaller eggs, also ratio, (3) increasing egg significantly increased offspring ratio (% daughters), but did not increase immature survival. The results suggest fertilize more lower fertilization threshold population, adjustments terms number may contribute minimize mate competition among sons inhabitants next generation. current study provides evidence mites can manipulate output dynamic environments.

Language: Английский