Studying the larval dispersal of bottom-dwelling species is necessary to understand their population dynamics and optimize their management. The black-lip pearl oyster (Pinctada margaritifera) is cultured extensively to produce black pearls, especially in French Polynesia's atoll lagoons. This aquaculture relies on spat collection, a process that can be optimized by understanding which factors ...

Six new Cymatodera speciesfrom the Mexican states of Jalisco and Chiapas, and the Central American countries of El Salvador, Honduras, Costa Rica and Panamá are described: Cymatodera rosalinae sp. n., Cymatodera capax sp. n., Cymatodera sinuosa sp. n., Cymatodera vittata sp. n., Cymatodera rubida sp. n. and Cymatodera limatula sp. n. Justification for retaining Cymatodera obliquefasciata within...

The Chinese species of Hemyda Robineau-Desvoidy (Phasiinae, Cylindromyiini) are revised. Five species are recognized, consisting of the previously recorded species H. hertingi Ziegler & Shima, H. obscuripennis (Meigen) and H. vittata (Meigen), one new species from NW Yunnan, Hemyda deqinensis sp. nov., and one new record for China, H. dominikae Draber-Mońko. A generic diagnosis of Hemyda is pro...

The aim of this study was the development a new multi-analytical approach to evaluate chemical alterations and differences in element content relation arsenic (As) As hyperaccumulator fern P. vittata. vittata plants were grown on two natural As-rich soils with either high or moderate (750 58 mg/kg). Dried samples from plant tissues then analysed by means micro-energy dispersive X-ray fluorescen...

Pepe River is one of the Bengawan Solo with a reasonably high level water pollution due to habit surroundings in throwing garbage into river. Plants that can survive polluted land conditions have tolerance level, called pioneer plants. One them ferns (Pteridophyta). This study aims identify type, abundance, Important Value Index (IVI), and index Diversity pteridophytes plant diversity Watershed...

We investigated the effects of chromate (CrVI) and phosphate (P) on their uptake and translocation in As-hyperaccumulator Pteris vittata (PV). Plants were exposed to 1) 0.10 mM CrVI and 0, 0.25, 1.25, or 2.50 mM P or 2) 0.25 mM P and 0, 0.50, 2.5 or 5.0 mM CrVI for 24 h in hydroponics. PV accumulated 2919 mg/kg Cr in the roots at CrVI₀.₁₀, and 5100 and 3500 mg/kg P in the fronds and roots at P₀...

Arsenic hyperaccumulator fern Pteris vittata L. produces large amounts of root exudates that are hypothesized to solubilize arsenic and maintain a unique rhizosphere microbial community. Total heterotrophic counts on rich or defined media supplemented with up to 400 mmol/L of arsenate showed a diverse arsenate-resistant microbial community from the rhizosphere of P. vittata growing in arsenic-c...