Repeated exposure and flooding of the Sunda and Sahul shelves during Pleistocene sea-level fluctuations is thought to have contributed to the isolation and diversification of sea-basin populations within the Coral Triangle. This hypothesis has been tested in numerous phylogeographical studies, recovering an assortment of genetic patterns that the authors have generally attributed to differences...

Neste trabalho foi desenvolvido um método para a determinação de hexaclorobenzeno, lindano, heptaclor, heptaclor epóxido, aldrin, dieldrin, endrin, DDT e DDE em folhas de Mikania laevigata, Maytenus ilicifolia e Cordia verbenacea, empregando a Cromatografia Gasosa acoplada a Espectrometria de Massas (GC-MS). A extração dos pesticidas foi realizada por extração sólidolíquido (SLE), seguida de li...

Studying closely related species and divergent populations provides insight into the process of speciation. Previous studies showed that the Sibiraea complex's evolutionary history on the Qinghai-Tibetan Plateau (QTP) was confusing and could not be distinguishable on the molecular level. In this study, the genetic structure and gene flow of Sibiraea laevigata and Sibiraea angustata on the QTP w...

La inoculación con rizobios y hongos micorrízicos arbusculares (HMA), de manera simple o combinada, puede contribuir el crecimiento establecimiento Prosopis laevigata por una interacción positiva los simbiontes la planta. El objetivo fue evaluar efecto combinada tres aislados locales (R1, R2 R3) dos cepas HMA (HMA1 HMA2) en colonización micorrízica, nodulación, producción biomasa P. sustrato pH...

In this study eight di€erent species of barnacles were found within nine species of sponges from the Red Sea. This brings to 11 the number of sponge-symbiotic barnacles reported from the Red Sea, two of these are new Acasta species (not described herein) and one (A. tzetlini Kolbasov) is a new record for this sea. This number is much higher than that of symbiotic barnacles found within sponges ...

A hematoside-type ganglioside, LLG-1 (1), has been obtained from the polar lipid fraction of the chloroform/methanol extract of the starfish Linckia laevigata. The structure of the ganglioside has been determined on the basis of chemical and spectroscopic evidence as 1-O-[N-glycolyl-alpha-D-neuraminosyl-(2-->3)-beta-D-galactopyranosyl-(1-->4)-beta-D-glucopyranosyl]-ceramide. The ceramide moiety...

Four new Asterolibertia species and a new variety of Cirsosia splendida, all found on native Cerrado plants, belonging to three host families are described, illustrated and named as: A. bahiensis sp. nov. on Erythroxylum sp. (Erythroxylaceae); A. barrinhensis sp. nov. on Diospyros burchellii (Ebenaceae); A. campograndensis sp. nov. on Hirtella glandulosa (Chrysobalanaceae); A. parinaricola sp. ...

Michauxia campanuloides (Campanulaceae) is a biennial to short-lived perennial characterized by white purple-suffused, deeply lobed corollas with narrow and strongly reflexed corolla lobes. It occurs widely on the eastern fringe of Mediterranean area in Turkey, Syria, Lebanon Israel. First collected Leonhard Rauwolf as early 1575, it was made known him through publication description an illustr...

Abstract Purpose The increasing volumes of mine tailings that are being generated globally because the rise in metal demand, whilst ore-grades continue to decline, call for novel sustainable management options. Phytoextraction using hyperaccumulator plant species may be one such strategies deal with these large contaminated materials. However, base metals (such as zinc, lead, copper) inherently...