Results 61 to 70 of about 3,277,453 (216)

The impacts of biological invasions

open access: yesBiological Reviews, EarlyView.
ABSTRACT The Anthropocene is characterised by a continuous human‐mediated reshuffling of the distributions of species globally. Both intentional and unintentional introductions have resulted in numerous species being translocated beyond their native ranges, often leading to their establishment and subsequent spread – a process referred to as biological
Phillip J. Haubrock   +42 more
wiley   +1 more source

Nutrient enrichment alters the microbiome and increases chytrid load in the American bullfrog Lithobates catesbeianus.

open access: yesDiseases of Aquatic Organisms
Agricultural practices have a profound impact on watershed dynamics, water quality, and the well-being of aquatic life. One major concern is agricultural pollution, particularly the excess of nutrients, which can elevate disease risks in various host ...
Katie Pincus   +3 more
semanticscholar   +1 more source

Current status and management of American bullfrog in Flanders [PDF]

open access: yes, 2014
American bullfrog Lithobates catesbeianus is one of the world’s worst invasive species and suspected to cause substantial ecological damage around the globe through predation, competition and pathogen transmission. The species has been introduced in Flanders at the end of the 1990s, with first observations in nature in 1996.
Devisscher, Sander   +4 more
openaire   +1 more source

Many roads to reservoirs? How susceptibility and shedding shape host competence in amphibians

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Host competence—the ability to acquire, harbour and transmit infections—drives pathogen spread and persistence in multi‐host communities. Evaluating species‐specific competence is critical for predicting transmission, particularly for generalist fungal pathogens like ...
Joseph A. DeMarchi   +7 more
wiley   +1 more source

Assessing the Presence, Pattern, and Environmental Correlates of Seasonal Skin Thickening in Anurans

open access: yesIntegrative Zoology, EarlyView.
Histological sections, like that of the ventral pectoral skin of Lithobates pipiens, were measured to assess variation in skin thickness throughout the year in three North American anuran species. After correcting for individual body size, we test whether skin thickness changes throughout the year and which factors (environment or life history) explain
Collin S. VanBuren   +3 more
wiley   +1 more source

Differential Uptake of Gold Nanoparticles by 2 Species of Tadpole, the Wood Frog (Lithobates Sylvaticus) and the Bullfrog (Lithobates Catesbeianus)

open access: yes, 2017
Engineered nanoparticles are aquatic contaminants of emerging concern that exert ecotoxicological effects on a wide variety of organisms. We exposed cetyltrimethylammonium bromide–capped spherical gold nanoparticles to wood frog and bullfrog tadpoles ...
Andresen, Kurt   +7 more
core   +1 more source

A brainstem preparation allowing simultaneous access to respiratory motor output and cellular properties of motoneurons in American bullfrog.

open access: yesJournal of Experimental Biology, 2022
Breathing is generated by a complex neural circuit, and the ability to monitor the activity of multiple network components simultaneously is required to uncover the cellular basis of breathing.
L. Amaral-Silva, Joseph M. Santin
semanticscholar   +1 more source

Ranavirus Outbreak in North American Bullfrogs (Rana catesbeiana), Japan, 2008

open access: yesEmerging Infectious Diseases, 2009
To the Editor: Ranaviruses (family Iridoviridae) are emerging pathogens of farmed and wild amphibians and cause high mortality rates in these animals (1). These viruses are associated with massive population decreases of some species (2,3); outbreaks have been reported in the United States, Asia, Micronesia, and Europe.
Yumi Une   +4 more
openaire   +3 more sources

Anatomy of spinal CSF loss in the American alligator (Alligator mississippiensis)

open access: yesJournal of Anatomy, Volume 246, Issue 4, Page 575-584, April 2025.
India ink introduced into the cranial cerebrospinal fluid (CSF) compartment of Alligator diffuses along the spinal cord and exits the spinal compartment using perineural flow, resulting in a prominent “ink cuff” forming at the base of the spinal nerve. In Alligator, the region of the ink cuff is drained by a small lymphatic vessel.
Hadyn DeLeeuw   +5 more
wiley   +1 more source

Distribution Change of Invasive American Bullfrogs (Lithobates catesbeianus) by Future Climate Threaten Endangered Suweon Treefrog (Hyla suweonensis) in South Korea

open access: yesAnimals, 2021
The American Bullfrog (Lithobates catesbeianus) has been imported into South Korea in earnest for food since the 1970s and introduced into nature due to release and escape.
Kyo Soung Koo, Minjee Choe
doaj   +1 more source

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