The responses of 20 species of ornamental palms and one cycad (Cycas revoluta) to two populations of the reniform nematode, Rotylenchulus reniformis, from southern Florida were studied in two greenhouse experiments conducted in 1989-1991 and 1991-92. Ornamental palms in pots were exposed to initial population densities of 400 and 1,500 R. reniformis/l00 cm(3) soil for 16 and 15 months, respecti...

SHANKLAND, M. BISSEN, S. T., and WEISBLAT, D. A. 1992. Description of the Californian leech Helobdella robusta sp. nov., and comparison with Helobdella triserialis on the basis of morphology, embryology, and experimental breeding. Can. J. Zool. 70: 1258 1263. This paper describes the leech Helobdella robusta, which was collected from the Sacramento delta of California. This new species is gener...

Diet plays a pivotal role in dictating behavioral patterns of herbivorous animals, particularly specialist species. The giant panda (Ailuropoda melanoleuca) is well-known as a bamboo specialist. In the present study, the response of giant pandas to spatiotemporal variation of bamboo shoots was explored using field surveys and GPS collar tracking. Results show the dynamics in panda-bamboo space-...

Rhagovelia zecai sp. nov., from the Brazilian Amazon, is described, illustrated, compared with similar species, and included in a key to species of the robusta group recorded from the country.

Despite the growing interest in diatom genomics, detailed time series of gene expression in relation to key cellular processes are still lacking. Here, we investigated the relationships between the cell cycle and chloroplast development in the pennate diatom Seminavis robusta. This diatom possesses two chloroplasts with a well-orchestrated developmental cycle, common to many pennate diatoms. By...

Soybeans grown under water stress associated with high temperatures during seed maturation and pre-harvest may produce green seed (GS) with expressive reduction in seed quality. The objectives of this study were to evaluate the response of different soybean cultivars grown under these stressful conditions regarding their susceptibility to GS production and to determine the chlorophyll retention...

Shorea robusta Gaertn. f. (Sal) is one of the most important traditional Indian medicinal plants. The resin of the plant has been used in the treatment of inflammation in folklore medicine. In the present study, ethanolic extract (70%) of S. robusta resin (SRE) was investigated for its anti-inflammatory and antipyretic activities. Acute inflammation was produced by carrageenan-induced hind paw ...

M O S T of the population genetics work on Drosophila species has been done with polymorphism at a single gene locus or different gene arrangements in one chromosome which behave in inheritance as single genetic units. However, little attention has been given to the problem of interactions between unlinked polymorphic loci. Consider two unlinked autosomal loci A and B and their variant alleles ...