Tag: rotifer

HSus 1: Forecasting Disasters (MS), HSus 1: Human Activity (HS), HSus 2: Managing Resources (HS), HSus 3: Human/Ecosystem Interactions (HS), Human Sustainability, Interdependent Relationships in Ecosystems, IR 1: Ecosystem Interactions (MS), S&F 1: DNA to Proteins (HS), S&F 4: Stimuli Response (MS), S&P 1: Atoms & Molecules (MS), S&P 4: Molecule Traits (HS), Structure & Properties of Matter, Structure and Function

Rotifers Paralyzing Schistosomes

GwynneL.

A rotifer-derived paralytic compound prevents transmission of schistosomiasis to a mammalian host SUMMARY: Researchers discovered that a new molecule produced by the rotifer, Rotaria rotatoria, paralyzes cercariae. Cercariae are the free-living/infectious stage of the flatworm Schistosoma, the cause of schistosomiasis. R. rotatoria live on the shell of freshwater snails and secrete a compound scientists have… Continue reading Rotifers Paralyzing Schistosomes

Inheritance & Variation of Traits, Inheritance 2: Role of DNA (HS), Inheritance 4: Asexual/Sexual (MS), Inheritance 5: DNA Technology (MS), Life Science, Natural Selection & Evolution, Non-NGSS Articles, NSE 3: Trait Selection (HS), NSE 4: Adaption (HS), NSE 4: Fitness (MS), S&F 1: DNA to Proteins (HS), S&F 2: Cell Function (MS), Structure and Function

Anhydrobiosis without trehalose in bdelloid rotifers

GwynneL.

Anhydrobiosis without trehalose in bdelloid rotifers SUMMARY: There are many types of organisms that can dry out, rehydrate, and then go about their lives with no problems. Many of the larger ones use trehalose or sucrose as an antifreeze. Bdelloid rotifers (tiny microscopic animals) do not. This study looked at the carbohydrate content in desiccated… Continue reading Anhydrobiosis without trehalose in bdelloid rotifers

Inheritance & Variation of Traits, Inheritance 4: Asexual/Sexual (MS), Inheritance 4: Population Genetics (HS), Life Science, Natural Selection & Evolution, NSE 1: Evolution Evidence (HS), NSE 4: Adaption (HS), NSE 4: Fitness (MS), NSE 5: Natural Selection (MS)

Rotifers Eating Foreign DNA

GwynneL.

Evidence Supporting the Uptake and Genomic Incorporation of Environmental DNA in the “Ancient Asexual” Bdelloid Rotifer Philodina roseola SUMMARY: This study looked at whether bdelloid rotifers were better at taking in DNA compared to Monogononta rotifers. Bdelloids are a class of rotifers that only reproduce asexually. There has never been a male observed. Their cells… Continue reading Rotifers Eating Foreign DNA

Inheritance & Variation of Traits, Inheritance 1: Mitosis (HS), Inheritance 4: Asexual/Sexual (MS), Life Science

Rotifer Reproduction Mechanism

GwynneL.

Genetic exchange among bdelloid rotifers is more likely due to horizontal gene transfer than to meiotic sex SUMMARY: This study looked at the conclusion drawn by another study that said bdelloid rotifers used a type of meiosis similar to that found in a genus of plants called Oenothera [1]. Five hundred seventy-six rotifers of the… Continue reading Rotifer Reproduction Mechanism

Earth Science, HSus 2: Managing Resources (HS), HSus 4: Evaluating Solutions (HS), Human Sustainability, Interdependent Relationships in Ecosystems, IR 1: Carrying Capacity (HS), IR 1: Ecosystem Interactions (MS), IR 3: Ecosystem Stability (HS), IR 6: Human Impact Solutions (HS), Life Science

Rotifers Eating Bacteria to Clean Water

GwynneL.

Foam-forming bacteria in activated sludge effectively reduced by rotifers in laboratory- and real-scale wastewater treatment plant experiments SUMMARY: This article looks at using rotifers as a way to control a specific type of filamentous bacteria in wastewater treatment plants. Overgrowth of this bacteria leads to foam and inefficient break down of waste by other microorganisms.… Continue reading Rotifers Eating Bacteria to Clean Water

HSus 2: Monitoring Human Impact (MS), HSus 3: Human/Ecosystem Interactions (HS), Human Sustainability, Interdependent Relationships in Ecosystems, IR 1: Ecosystem Interactions (MS), IR 3: Ecosystem Stability (HS), IR 4: Reducing Human Impact (HS), IR 6: Human Impact Solutions (HS), M&E 5: Changing Ecosystems (MS), Matter & Energy in Organisms/Ecosystems

Effects of Antibiotics on Plankton

GwynneL.

Interspecies Interactions Reverse the Hazard of Antibiotics Exposure: A Plankton Community Study on Responses to Ciprofloxacin hydrochloride SUMMARY: Antibiotics that have made their way into aquatic ecosystems may have an effect on the food chains there. This study tested the effects of ciprofloxacin hydrochloride on 2 different types of algae (phytoplankton) and a species of… Continue reading Effects of Antibiotics on Plankton