Results 51 to 60 of about 1,388 (173)

Comparative Immunology. Lymph Nodes in the Amphibian, Bufo marinus

open access: yesExperimental Biology and Medicine, 1964
SummaryEncapsulated nodes of lymphoid tissue have been demonstrated in the upper thorax, neck and axilla of the amphibian, Bujo marinus. The nodes phagocytize India ink and form antibody to bovine serum albumin. The anatomical and functional characteristics of these lymph nodes indicate that they are comparable to lymph nodes of mammals.
S P, KENT, E E, EVANS, M H, ATTLEBERGER
openaire   +2 more sources

Ophthalmic findings and parameters in Western tiger salamanders (Ambystoma mavortium) from northern Colorado

open access: yesVeterinary Ophthalmology, Volume 28, Issue 1, Page 9-20, January 2025.
Abstract Objective The aim of this study was to document ophthalmic examination findings and provide reference values for ocular examinations and diagnostics in clinically normal Western tiger salamanders (Ambystoma mavortium) and to evaluate the mydriatic effect of a topical rocuronium bromide and identify any adverse effects.
Kyle J. Kansman   +4 more
wiley   +1 more source

Live Fast, Die Young: Life History Traits of an Apex Predator Exacerbate the Ecological Impact of a Toxic Invader

open access: yesEcology and Evolution, Volume 14, Issue 12, December 2024.
We show that large floodplain monitors reach sexual maturity surprisingly rapidly, and females rarely live for more than 2 years. This fast life history requires novel reproductive strategies and high feeding rates, favouring the evolution of “risky” tactics such as consuming novel prey items (such as invasive toxic cane toads).
Georgia Ward‐Fear   +4 more
wiley   +1 more source

It is lonely at the front: contrasting evolutionary trajectories in male and female invaders [PDF]

open access: yesRoyal Society Open Science, 2016
Invasive species often exhibit rapid evolutionary changes, and can provide powerful insights into the selective forces shaping phenotypic traits that influence dispersal rates and/or sexual interactions. Invasions also may modify sexual dimorphism.
Cameron M. Hudson   +2 more
doaj   +1 more source

A Review of Theory: Comparing Invasion Ecology and Climate Change‐Induced Range Shifting

open access: yesGlobal Change Biology, Volume 30, Issue 12, December 2024.
We argue that scientists studying either non‐native invasions or climate change‐induced range shifting are interested in the same underlying mechanistic questions: (1) What species traits enable survival in a new location? and (2) Which recipient ecosystems are likely to support a newly arrived species?
Haley D. Flickinger, Jeffrey S. Dukes
wiley   +1 more source

Is “cooling then freezing” a humane way to kill amphibians and reptiles?

open access: yesBiology Open, 2015
What is the most humane way to kill amphibians and small reptiles that are used in research? Historically, such animals were often killed by cooling followed by freezing, but this method was outlawed by ethics committees because of concerns that ice ...
Richard Shine   +5 more
doaj   +1 more source

An interdisciplinary approach to the collapse of the port and degradation of freshwater resources at Panama Viejo (Panama), 1519–1671

open access: yesGeoarchaeology, Volume 39, Issue 3, Page 320-334, May/June 2024.
Abstract The Archaeological Site of Panama Viejo (Panama) comprises a protected area of 28 km2 within present‐day Panama City, on America's Pacific coast. In 1519, the Spaniards founded the city of Panama Viejo to secure a natural port in an area inhabited by indigenous peoples since at least the eighth century CE.
Miriam Martos   +2 more
wiley   +1 more source

Pheromones can cull an invasive amphibian without releasing survivors from intraspecific competition

open access: yesEcosphere, 2019
Attempts to cull an invasive species often create a paradoxical situation, whereby the consequent reduction in invader densities frees the survivors from intraspecific competition—and hence, increases the viability of those survivors.
S. McCann, M. R. Crossland, R. Shine
doaj   +1 more source

Host–parasite interactions during a biological invasion: The fate of lungworms (Rhabdias spp.) inside native and novel anuran hosts

open access: yesInternational Journal for Parasitology: Parasites and Wildlife, 2015
The cane toad invasion in Australia provides a robust opportunity to clarify the infection process in co-evolved versus de novo host–parasite interactions.
Felicity B.L. Nelson   +3 more
doaj   +1 more source

Teacher toads: Buffering apex predators from toxic invaders in a remote tropical landscape

open access: yesConservation Letters, Volume 17, Issue 3, May/June 2024.
Abstract Even after research identifies new approaches for wildlife management, translating those methods for delivery can be logistically challenging. In tropical Australia, invasive cane toads (Rhinella marina) fatally poison many anuran‐eating native predators.
Georgia Ward‐Fear   +4 more
wiley   +1 more source

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