Invasive predatory fish occupies highest trophic position leading to expansion of isotopic niches in a riverine food web.

Invasive species are drivers of ecological change with the potential to reshape the structure and function of terrestrial and aquatic ecosystems. The invasive flathead catfish (Pylodictis olivaris) is an opportunistic predator that has established a rapidly growing population in the Susquehanna River, Pennsylvania, USA, since they were first detected in 2002. Although the predatory effects of invasive catfishes on native fish communities have been documented, the effects of invasion on riverine food webs are poorly understood.

Population genetic structure and demographic history reconstruction of introduced flathead catfish (Pylodictis olivaris) in two US Mid-Atlantic rivers.

Population genetic analysis of invasive populations can provide valuable insights into the source of introductions, pathways for expansion, and their demographic histories. Flathead catfish (Pylodictis olivaris) are a prolific invasive species with high fecundity, long-distance dispersal, and piscivorous feeding habits that can lead to declines in native fish populations. In this study, we analyse the genetics of invasive P.

Delivery dose of methadone, but not buprenorphine, is associated with the risk and severity of neonatal opiate withdrawal syndrome.

Background: Data on the relationship between the dose of opioid replacement therapy in pregnancy and the risk and severity of neonatal opioid withdrawal syndrome are conflicting and have methodological limitations.

Objective: To assess the association of methadone and buprenorphine dose at delivery with neonatal opioid withdrawal syndrome in a large cohort.

Study Design: We performed a retrospective cohort study using data from a comprehensive perinatal opioid dependency program from 2000 through 2016.

A Patient-Centered Approach to Refractory Overactive Bladder and Barriers to Third-Line Therapy.

Objective: To explore the decision-making process in women who do not pursue treatment with onabotulinumtoxinA, sacral neuromodulation, or percutaneous nerve stimulation in patients with overactive bladder (OAB).

Methods: This was a qualitative research study. Participants were females aged 18-80 years with a diagnosis of OAB and were evaluated by a urologic or urogynecologic physician between January 2017 and March 2018.

The relationship between gestational age and the severity of neonatal abstinence syndrome.

Background And Aims: The relationship between gestational age at delivery and the severity of neonatal abstinence syndrome (NAS) is poorly understood. Our objective was to compare the length of pharmacotherapy and hospital stay among opioid-exposed infants born during the late pre-term, early term, full term and late term periods.

Design: Retrospective cohort study of infants affected by NAS.

Intravenous drug use is associated with alloimmunization in pregnancy.

Background: Anecdotal evidence has suggested an association of intravenous drug abuse with alloimmunization; however, published data are limited to case reports.

Objective: The purpose of this study was to determine whether women with a history of intravenous drug abuse have an increased risk of alloimmunization.

Study Design: A retrospective cohort study was performed with the use of data from a single-center blood bank and perinatal database from 2008-2014.