Can a nest associate fish use an introduced host?—Brood parasitism by Pungtungia herzi toward introduced Coreoperca kawamebari

CHANGING OF STUDENTS\' VIEWS TOWARD ADDICTION BY SELF -INTRODUCED DRUG ABUSERS AND THEIR FAMILIES

A group of high school students attended 7 educational sessions for a preventive drug abuse program. The students were exposed to drug abusers and their families. Drug abusers and their families informed the subjects about the consequences of addiction in their life: how they became addicted and how the addiction worsened their psychosocial life. Moreover their families explained to student...

Darwin’s finches combat introduced nest parasites with fumigated cotton

Introduced parasites are a threat to biodiversity when naïve hosts lack effective defenses against such parasites [1]. Several parasites have recently colonized the Galápagos Islands, threatening native bird populations [2]. For example, the introduced parasitic nest fly Philornis downsi (Diptera: Muscidae) has been implicated in the decline of endangered species of Darwin's finches, such as th...

Pathological and Ecological Host Consequences of Infection by an Introduced Fish Parasite

The infection consequences of the introduced cestode fish parasite Bothriocephalus acheilognathi were studied in a cohort of wild, young-of-the-year common carp Cyprinus carpio that lacked co-evolution with the parasite. Within the cohort, parasite prevalence was 42% and parasite burdens were up to 12% body weight. Pathological changes within the intestinal tract of parasitized carp included di...

On a Foreign Body Introduced by Gunshot

Reversing introduced species effects: Experimental removal of introduced fish leads to rapid recovery of a declining frog.

Amphibian population declines and extinctions are occurring even in the world's least impacted areas. The introduction and spread of nonnative predators is one of many proposed causes of amphibian declines. Correlational studies have shown a negative relationship between introduced fishes and declining amphibians, but little direct experimental evidence is available. This study experimentally m...