Can an Invasive Prey Species Induce Morphological and Behavioral Changes in an Endemic Predator?Evidence from a South Korean Snake(Oocatochus rufodorsatus)

2014 ◽  
Vol 5 (4) ◽  
pp. 245
Author(s):  
HEO Jun-Haeng ◽  
LEE Heon-Joo ◽  
KIM Il-Hun ◽  
J.FONG Jonathan ◽  
KIM Ja-Kyeong ◽  
...  
Keyword(s):  
Prey Species ◽  
Behavioral Changes ◽  
South Korean ◽  
Invasive Prey

Frequent Consumption and Rapid Digestion of Prey by the Lake Erie Watersnake with Implications for an Invasive Prey Species

Copeia ◽  
2009 ◽  
Vol 2009 (3) ◽  
pp. 437-445 ◽  
Author(s):  
Peter C. Jones ◽  
Richard B. King ◽  
Kristin M. Stanford ◽  
Tyler D. Lawson ◽  
Matt Thomas
Keyword(s):  
Lake Erie ◽  
Prey Species ◽  
Frequent Consumption ◽  
Invasive Prey

Something different for dinner? Responses of a native Australian predator (the keelback snake) to an invasive prey species (the cane toad)

2009 ◽  
Vol 12 (5) ◽  
pp. 1045-1051 ◽  
Author(s):  
John Llewelyn ◽  
Lin Schwarzkopf ◽  
Ross Alford ◽  
Richard Shine
Keyword(s):  
Prey Species ◽  
Cane Toad ◽  
Invasive Prey

scholarly journals Habitat mediates coevolved but not novel species interactions

2022 ◽  
Vol 289 (1966) ◽  
Author(s):  
Joshua P. Twining ◽  
Chris Sutherland ◽  
Neil Reid ◽  
David G. Tosh
Keyword(s):  
Species Interactions ◽  
Prey Species ◽  
Positive Influence ◽  
Habitat Modification ◽  
Red Squirrel ◽  
Pine Marten ◽  
Grey Squirrel ◽  
Landscape Modification ◽  
Anthropogenic Habitat ◽  
Invasive Prey

Ongoing recovery of native predators has the potential to alter species interactions, with community and ecosystem wide implications. We estimated the co-occurrence of three species of conservation and management interest from a multi-species citizen science camera trap survey. We demonstrate fundamental differences in novel and coevolved predator–prey interactions that are mediated by habitat. Specifically, we demonstrate that anthropogenic habitat modification had no influence on the expansion of the recovering native pine marten in Ireland, nor does it affect the predator's suppressive influence on an invasive prey species, the grey squirrel. By contrast, the direction of the interaction between the pine marten and a native prey species, the red squirrel, is dependent on habitat. Pine martens had a positive influence on red squirrel occurrence at a landscape scale, especially in native broadleaf woodlands. However, in areas dominated by non-native conifer plantations, the pine marten reduced red squirrel occurrence. These findings suggest that following the recovery of a native predator, the benefits of competitive release are spatially structured and habitat-specific. The potential for past and future landscape modification to alter established interactions between predators and prey has global implications in the context of the ongoing recovery of predator populations in human-modified landscapes.

scholarly journals Limpkin, Aramus guarauna (L., 1766) (Gruiformes, Aramidae), extralimital breeding in Louisiana is associated with availability of the invasive Giant Apple Snail, Pomacea maculata Perry, 1810 (Caenogastropoda, Ampullariidae)

Check List ◽  
2019 ◽  
Vol 15 (3) ◽  
pp. 497-507
Author(s):  
Robert C. Dobbs ◽  
Jacoby Carter ◽  
Jessica L. Schulz
Keyword(s):  
Range Expansion ◽  
Prey Species ◽  
Apple Snail ◽  
Predator Species ◽  
Pomacea Maculata ◽  
Invasive Prey ◽  
Conservation And Management ◽  
Native Predator

We document the first breeding record of Limpkin, Aramus guarauna (Linnaeus, 1766) (Gruiformes, Aramidae), for Louisiana, describe an additional unpublished breeding record from Georgia, as well as a possible record from Alabama, and associate these patterns with the concurrent establishment of the invasive Giant Apple Snail, Pomacea maculata Perry, 1810 (Caenogastropoda, Ampullariidae). We predict that an invasive prey species may facilitate range expansion by native predator species, which has ramifications for conservation and management.

scholarly journals Resistance is futile: lack of predator switching and a preference for native prey predict the success of an invasive prey species

2018 ◽  
Vol 5 (8) ◽  
pp. 180339 ◽  
Author(s):  
Ross N. Cuthbert ◽  
James W. E. Dickey ◽  
Clare McMorrow ◽  
Ciaran Laverty ◽  
Jaimie T. A. Dick
Keyword(s):  
Invasive Species ◽  
Native Species ◽  
Prey Species ◽  
Biotic Resistance ◽  
Functional Responses ◽  
Prey Switching ◽  
Ecological Concepts ◽  
Invasive Prey ◽  
Predator Switching ◽  
Invasive Amphipod

Invasive species continue to severely impact biodiversity, yet predicting the success or failure of introduced species has remained elusive. In particular, the relationship between community invasibility and native species diversity remains obscure. Here, we apply two traditional ecological concepts that inform prey population stability and hence invasibility. We first show that the native predatory crustacean Gammarus duebeni celticus exhibited similar type II (destabilizing) functional responses (FRs) towards native mayfly prey and invasive amphipod prey, when these prey species were presented separately. However, when the two prey species were presented simultaneously, the predator did not exhibit prey switching, instead consuming disproportionately more native prey than expected from the relative abundance of native and invasive species. These consumptive propensities foster reductions of native prey, while simultaneously limiting biotic resistance against the invasive species by the native predator. Since our theoretical considerations and laboratory results match known field invasion patterns, we advocate the increased consideration of FR and prey switching studies to understand and predict the success of invasive species.

scholarly journals Variation in Neotropical river otter (Lontra longicaudis) diet: Effects of an invasive prey species

PLoS ONE ◽  
2019 ◽  
Vol 14 (10) ◽  
pp. e0217727
Author(s):  
Diego Juarez-Sanchez ◽  
John G. Blake ◽  
Eric C. Hellgren
Keyword(s):  
Prey Species ◽  
River Otter ◽  
Invasive Prey ◽  
Lontra Longicaudis

Supervision: A Case Study

1977 ◽  
Vol 8 (4) ◽  
pp. 256-263
Author(s):  
Roberta Chapey ◽  
Geraldine Chapey
Keyword(s):  
Organizational Communication ◽  
Behavioral Changes ◽  
Personal Problems ◽  
Clinically Significant

Occasionally, it is the responsibility of a supervisor to help a staff speech clinician resolve professional and or personal problems that interfere with the delivery of quality services. To deal with this situation, the supervisor must be equipped with the techniques and procedures for effective organizational communication. This article presents a case study in which a speech clinician demonstrated irresponsibility in various job areas. The supervisor’s philosophy and the procedures used in managing these problems are presented. The behavioral changes suggest that the supervisor’s interventive procedures were clinically significant and warrant further investigation.

The Biological Clock and Sleep in the Elderly

2006 ◽  
Vol 19 (1) ◽  
pp. 45-51 ◽  
Author(s):  
Myriam Juda ◽  
Mirjam Münch ◽  
Anna Wirz-Justice ◽  
Martha Merrow ◽  
Till Roenneberg
Keyword(s):  
Circadian Rhythms ◽  
Biological Clock ◽  
The Elderly ◽  
Early Morning ◽  
Behavioral Changes ◽  
Older Age ◽  
Age Related ◽  
Theoretical Considerations ◽  
Sleep Difficulties ◽  
Circadian Biology

Abstract: Among many other changes, older age is characterized by advanced sleep-wake cycles, changes in the amplitude of various circadian rhythms, as well as reduced entrainment to zeitgebers. These features reveal themselves through early morning awakenings, sleep difficulties at night, and a re-emergence of daytime napping. This review summarizes the observations concerning the biological clock and sleep in the elderly and discusses the documented and theoretical considerations behind these age-related behavioral changes, especially with respect to circadian biology.

Age Differences in Eye Movements During Reading: Degenerative Problems or Compensatory Strategy?

2019 ◽  
Vol 24 (4) ◽  
pp. 297-311
Author(s):  
José David Moreno ◽  
José A. León ◽  
Lorena A. M. Arnal ◽  
Juan Botella
Keyword(s):  
Eye Movements ◽  
Eye Movement ◽  
Meta Analysis ◽  
Age Groups ◽  
Behavioral Changes ◽  
Aging Effects ◽  
Movement Data ◽  
Sentence Reading ◽  
The Difference ◽  
Eye Movements During Reading

Abstract. We report the results of a meta-analysis of 22 experiments comparing the eye movement data obtained from young ( Mage = 21 years) and old ( Mage = 73 years) readers. The data included six eye movement measures (mean gaze duration, mean fixation duration, total sentence reading time, mean number of fixations, mean number of regressions, and mean length of progressive saccade eye movements). Estimates were obtained of the typified mean difference, d, between the age groups in all six measures. The results showed positive combined effect size estimates in favor of the young adult group (between 0.54 and 3.66 in all measures), although the difference for the mean number of fixations was not significant. Young adults make in a systematic way, shorter gazes, fewer regressions, and shorter saccadic movements during reading than older adults, and they also read faster. The meta-analysis results confirm statistically the most common patterns observed in previous research; therefore, eye movements seem to be a useful tool to measure behavioral changes due to the aging process. Moreover, these results do not allow us to discard either of the two main hypotheses assessed for explaining the observed aging effects, namely neural degenerative problems and the adoption of compensatory strategies.

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