Mechanisms underlying competitive interactions are important in understanding the structure of planktonic communities, particularly the coexistence of similar species. Here we present experimental results of exploitative competition among three sympatric sibling species of the Brachionus plicatilis complex for two differently-sized species of food microalgae. These three rotifer species are to ...

1838 When the populations of two species oscillate together, it's a good bet that they are tightly coupled ecologically. Most often, these oscillations occur between predator and prey (or a pathogen and its host), as demonstrated by the famous case of the Canadian lynx and snowshoe hare, documented in the trapping records of the Hudson's Bay Company. This makes sense—as the predator depletes th...

Tidal lowland is an area with significant potential for fisheries development, especially in aquaculture. Abundant water supply and land availability provide great opportunities cultivating aquaculture commodities such as fish, shrimp, crab. However, effective quality management poses a challenge, necessitating comprehensive evaluation based on biological, physical, chemical assessment. Among t...

361 most of the growing season but, following certain environmental cues, amictic females produce mictic daughters. These mictic females produce haploid eggs meiotically that develop into either males or, if fertilized, resting eggs. Mictic females can only be fertilized within a few hours of birth3. Therefore, in Vollrath’s example a Brachionus rubens female does not fit Fisher’s theory of sex...

Trade-offs among species' ecological interactions is a pervasive explanation for species coexistence. The traits associated with trade-offs are typically measured to mechanistically explain species coexistence at a single spatial scale. However, species potentially interact at multiple scales and this may be reflected in the traits among coexisting species. I quantified species' ecological trai...

Despite rapid growth of our knowledge on the phylum Rotifera, only few studies on Iranian rotifers have been carried out. In this paper, we present a checklist of rotifers from the province of Tehran in Iran. In total, 45 species of rotifers (class Eurotatoria) are reported. Most of the recorded species are cosmopolitan in distribution. Cephalodella ventripes, Dicranophorus forcipatus, D. luetk...

Diet has profound effects on animal longevity and manipulation of nutrient sensing pathways is one of the primary interventions capable of lifespan extension. This often is done through caloric restriction (CR) and a variety of CR mimics have been identified that produce life extending effects without adhering to the rigorous CR dietary regimen. Glycerol is a dietary supplement capable mimickin...