Predator-prey interactions and venom composition in a high elevation lizard specialist, Crotalus pricei (twin-spotted Rattlesnake).

08:00 EDT 9th September 2019 | BioPortfolio

Summary of "Predator-prey interactions and venom composition in a high elevation lizard specialist, Crotalus pricei (twin-spotted Rattlesnake)."

The Twin-spotted Rattlesnake (Crotalus pricei) is a small lizard specialist restricted to higher montane habitat in the Sky Islands of Arizona and México. Though this species is restricted to high elevations and dispersal between mountaintops is impossible, few studies have investigated venom composition or the predator-prey relationship between C. p. pricei and its primary prey source, Yarrow's Spiny Lizard (Sceloporus jarrovii). Because of current isolation of populations in disjunct mountain ranges, it is possible that populations show local adaptation to prey and/or environmental conditions, as reflected by distinct venom phenotypes. Here we characterize venom composition of C. pricei from several different Sky Island mountain ranges and its relationship with S. jarrovii by using various analytical techniques and comparative toxicity tests. Results of venom analyses indicate that there is limited geographic variation in venom composition, occurring primarily in venoms of C. pricei from Durango, México, which had unusual PLA isoforms that are lacking from venoms of U.S. populations. Toxicity assays reveal that S. jarrovii has not developed resistance specific to C. p. pricei venom but does display a general tolerance to venom of several snakes in the genus Crotalus. These results provide insight into the evolutionary relationship between a lizard specialist and its natural prey, in addition to novel information on the venom composition of a little-studied species with a narrow range in the United States.


Journal Details

This article was published in the following journal.

Name: Toxicon : official journal of the International Society on Toxinology
ISSN: 1879-3150


DeepDyve research library

PubMed Articles [18164 Associated PubMed Articles listed on BioPortfolio]

18S rRNA metabarcoding diet analysis of a predatory fish community across seasonal changes in prey availability.

Predator-prey relationships are important ecological interactions, affecting biotic community composition and energy flow through a system, and are of interest to ecologists and managers. Morphologica...

Multi-trophic native and non-native prey naïveté shape marine invasion success.

Invasive predators have caused rapid declines in many native prey species across the globe. Predator invasion success may be attributed to prey naïveté, or the absence of anti-predator behavior betw...

Assessing predator-prey interactions in a chemically altered aquatic environment: the effects of DDT on Xenopus laevis and Culex sp. larvae interactions and behaviour.

Behavioural assays are used as a tool to understand ecotoxicological effects on organisms, but are often not applied in an ecologically relevant context. Assessment of the effect of chemical contamina...

Interspecific prey neighborhoods shape risk of predation in a savanna ecosystem.

The vulnerability of an individual to predation depends on the availability of other prey items in the surrounding environment. Interspecific prey aggregations or "neighborhoods" may therefore affect ...

Numerical response of a mammalian specialist predator to multiple prey dynamics in Mediterranean farmlands.

The study of rodent population cycles has greatly contributed, both theoretically and empirically, to our understanding of the circumstances under which predator-prey interactions destabilize populati...

Clinical Trials [5045 Associated Clinical Trials listed on BioPortfolio]

A Comparative Study on Local Allergic Responses of Bee Venom and Essential Bee Venom Pharmacopuncture

This double-blinded randomized clinical trial investigates any differences in allergic responses elicited by Bee Venom (BV) and Essential Bee Venom (e-BV).

Efficacy and Safety of a Purified Standardised Bee Venom Preparation

The trial is performed to assess efficacy and safety of a purified standardised bee venom preparation in bee venom allergy

Regulation of Blood Dendritic Cells During Immune Therapy for Hymenoptera Venom Allergy

Dendritic cells (DC) play a key role in the pathogenesis of allergic diseases. The regulation of blood dendritic cells in patients with hymenoptera venom allergy before and during immune t...

Safety and Efficacy Study of Bee Venom to Treat Knee Osteoarthritis

Study wishes to determine if the use of injectable bee venom is a safe and effective treatment for persons with mild to moderate knee Osteoarthritis and would result in decreased report of...

Efficacy and Safety of a Purified Standardised Wasp Venom Preparation

The trial is performed to assess efficacy and safety of a purified standardised wasp venom preparation in wasp venom allergy

Medical and Biotech [MESH] Definitions

An animal or plant species in danger of extinction. Causes can include human activity, changing climate, or change in predator/prey ratios.

Poisonous animal secretions forming fluid mixtures of many different enzymes, toxins, and other substances. These substances are produced in specialized glands and secreted through specialized delivery systems (nematocysts, spines, fangs, etc.) for disabling prey or predator.

A clinical syndrome defined by MYOCARDIAL ISCHEMIA symptoms; persistent elevation in the ST segments of the ELECTROCARDIOGRAM; and release of BIOMARKERS of myocardial NECROSIS (e.g., elevated TROPONIN levels). ST segment elevation in the ECG is often used in determining the treatment protocol (see also NON-ST ELEVATION MYOCARDIAL INFARCTION).

BIRDS that hunt and kill other animals, especially higher vertebrates, for food. They include the FALCONIFORMES order, or diurnal birds of prey, comprised of EAGLES, falcons, HAWKS, and others, as well as the STRIGIFORMES order, or nocturnal birds of prey, which includes OWLS.

A myocardial infarction that does not produce elevations in the ST segments of the ELECTROCARDIOGRAM. ST segment elevation of the ECG is often used in determining the treatment protocol (see also ST Elevation Myocardial Infarction).

Quick Search

DeepDyve research library

Relevant Topic

Immunoassay - ELISA
Immunoassays are quick and accurate tests to detect specific molecules. Immunoassays rely on an antibody to bind to the specific structure of a molecule. Antibodies are proteins generated by animals in response to the invasion of a foreign molecule (anti...

Searches Linking to this Article