Musculature of 36 specimens of Pagrus pagrus from the coastal zone of the State of Rio de Janeiro were examined to study larval of anisakid nematodes between January and May 2008. A total of 24 larval of Anisakis sp., Contracaecum sp., Hysterothylacium sp. and Raphidascaris sp. were collected infecting seven fishes (19.4%). Larval Hysterothylacium sp. and Contracaecum sp. showed highest prevale...

The effects of sucrose and amino acid (aa) composition and concentration in meridic larval diets (e.g., partially defined at the chemical level) was examined on several parameters of Mediterranean fruit fly (Medfly) development, lipid and protein levels of pupating larvae and emerging adults were examined. Different sucrose concentrations in the diet had small effects upon most of the developme...

Social evolution in honey bees has produced strong queen-worker dimorphism for plastic traits that depend on larval nutrition. The honey bee developmental programme includes both larval components that determine plastic growth responses to larval nutrition and nurse components that regulate larval nutrition. We studied how these two components contribute to variation in worker and queen body si...

Fishes exhibit a remarkable diversity of body shape as adults; however, it is unknown whether this diversity is reflected in larval stage morphology. Here we investigate the relationship between larval and adult body shape as expressed by body elongation. We surveyed a broad range of ray-finned fish species and compared body shape at larval and adult stages. Analysis shows that the vast majorit...

Larval development time is a critical factor in assessing the potential for larval transport, mortality, and subsequently, the connectivity of marine populations through larval exchange. Most estimates of larval duration are based on laboratory studies and may not reflect development times in nature. For larvae of the American lobster (Homarus americanus), temperature-dependent development time...

The development of Ophiothrix fragilis was documented using light microscopy, and the allometry of larval growth was quantified. Larval development to the suspended juvenile stage took 21 days under conditions that were probably optimal compared to those in the plankton. Larval shape changed through development as the larval body and arms grew. Growth of the posterolateral larval arms was conti...

beet armyworm (spodoptera exigua (hubner)) (lepidoptera: noctuidae) is the most economically important sugar beet (beta vulgaris) pest worldwide. the main control method of this pest is insecticides use. thus, it is important to develop alternative means of controlling this pest, including host plant resistance using plant lectins. in the current study, the effects of gna (galanthus nivalis agg...

The insulin/IGF-1 signalling (IIS) pathway plays an important role in the regulation of larval diapause, the long-lived growth arrest state called dauer arrest, in Caenorhabditis elegans. In this nematode, 40 insulin-like peptides (ILPs) have been identified as putative ligands of the IIS pathway; however, it remains unknown how ILPs modulate larval diapause. Here we show that the secretory pol...