M.J. Brewer *, Texas AgriLife Research and Department of Entomology, Texas AgriLife Research and Extension Center at Corpus Christi, Corpus Christi, TX 78406; J.S. Armstrong, USDA ARS Beneficial Insect Research Unit, Kika de la Garza Subtropical Agricultural Research Center, Weslaco, TX 78596; E.G. Medrano, USDA ARS Cotton Pathology Research Unit, Southern Plains Agricultural Research Center, C...

O ermitão Clibanarius vittatus é um organismo típico de regiões intertidais estuarinas sendo considerado um possível bioindicador da presença de tributilestanho (TBT) nesses ambientes. Por esta razão, este estudo apresenta o desempenho analítico e a validação do método para quantificação de TBT em tecidos de C. vittatus por cromatografia gasosa com detector fotométrico de chama pulsante (GC-PFP...

The relative acute toxicity of spent lubricant oil and detergent was evaluated against hermit crab, Clibanarius africanus (Aurivillus) and periwinkle, Tympanotonus fuscatus (L) from the Lagos lagoon in laboratory bioassays. Based on the derived toxicity indices, the detergent (96 hr LC50 = 5.77ml/l) was found to be 1.73 times more toxic than spent engine oil (96 hr LC50 = 10.01 ml/l) when actin...

The acute toxicity of Nigeria Bonny light crude oil against hermit crab, Cliabanarius africanus of a tidal creek, Eastern Obolo, Akwa Ibom State, Nigeria was investigated in the laboratory under static bioassay. The test crude oil was found to be poorly toxic to the test organism, resulting in delayed mortality and consequent extension of the bioassay to 8 days. Based on the LC50, the toxicity ...

Grazing is one of the most important biological factors controlling abundance early-life stages fucoids and major issues when restoring marine forests. Benthic macroinvertebrates (e.g., sea urchins) fish shape regulate benthic macroalgal communities from polar to tropical regions can be responsible for regime shifts leading predominance turfs and/or barren grounds. However, other herbivores (i....