scholarly journals Shifts in intertidal zonation and refuge use by prey after mass mortalities of two predators

Ecology ◽  
2017 ◽  
Vol 98 (4) ◽  
pp. 1006-1015 ◽  
Author(s):  
Sarah A. Gravem ◽  
Steven G. Morgan
Keyword(s):  
Refuge Use ◽  
Intertidal Zonation ◽  
Mass Mortalities

Intertidal zonation patterns of macroinfauna over a range of exposed sandy beaches in south-central Chile

1993 ◽  
Vol 101 ◽  
pp. 105-118 ◽  
Author(s):  
E Jaramillo ◽  
A McLachlan ◽  
P Coetzee
Keyword(s):  
Sandy Beaches ◽  
Central Chile ◽  
South Central ◽  
Intertidal Zonation ◽  
Zonation Patterns

scholarly journals Suppression of personality variation in boldness during foraging in three-spined sticklebacks

2021 ◽  
Vol 75 (4) ◽  
Author(s):  
Hannah E. A. MacGregor ◽  
Aislinn Cottage ◽  
Christos C. Ioannou
Keyword(s):  
Negative Feedback ◽  
Risk Taking ◽  
Positive Feedback ◽  
Gasterosteus Aculeatus ◽  
Control Treatment ◽  
Refuge Use ◽  
Individual Level ◽  
Behavioural Type ◽  
State Behaviour

Abstract Consistent inter-individual variation in behaviour within a population, widely referred to as personality variation, can be affected by environmental context. Feedbacks between an individual’s behaviour and state can strengthen (positive feedback) or weaken (negative feedback) individual differences when experiences such as predator encounters or winning contests are dependent on behavioural type. We examined the influence of foraging on individual-level consistency in refuge use (a measure of risk-taking, i.e. boldness) in three-spined sticklebacks, Gasterosteus aculeatus, and particularly whether changes in refuge use depended on boldness measured under control conditions. In the control treatment trials with no food, individuals were repeatable in refuge use across repeated trials, and this behavioural consistency did not differ between the start and end of these trials. In contrast, when food was available, individuals showed a higher degree of consistency in refuge use at the start of the trials versus controls but this consistency significantly reduced by the end of the trials. The effect of the opportunity to forage was dependent on behavioural type, with bolder fish varying more in their refuge use between the start and the end of the feeding trials than shyer fish, and boldness positively predicted the likelihood of feeding at the start but not at the end of the trials. This suggests a state-behaviour feedback, but there was no overall trend in how bolder individuals changed their behaviour. Our study shows that personality variation can be suppressed in foraging contexts and a potential but unpredictable role of feedbacks between state and behaviour. Significance statement In this experimental study, we examined how foraging influences consistency in risk-taking in individual three-spined sticklebacks. We show that bolder individuals become less consistent in their risk-taking behaviour than shyer individuals during foraging. Some bolder individuals reinforce their risk-taking behaviour, suggesting a positive feedback between state and behaviour, while others converge on the behaviour of shyer individuals, suggesting a negative feedback. In support of a role of satiation in driving negative feedback effects, we found that bolder individuals were more likely to feed at the start but not at the end of the trials. Overall, our findings suggest that foraging can influence personality variation in risk-taking behaviour; however, the role of feedbacks may be unpredictable.

Effects of predaceous and nonpredaceous introduced fish on the survival, growth, and antipredation behaviours of long-toed salamanders

2009 ◽  
Vol 87 (10) ◽  
pp. 948-955 ◽  
Author(s):  
K. J. Pearson ◽  
C. P. Goater
Keyword(s):  
Activity Patterns ◽  
Pimephales Promelas ◽  
Indigenous Populations ◽  
Introduced Fish ◽  
Refuge Use ◽  
Field Surveys ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Introduced Predators ◽  
Survival And Growth ◽  
Outdoor Mesocosms

Simultaneous introduction of complex suites of exotic organisms into indigenous populations have poorly known magnitudes and consequences. We compared the effects of introduced piscivorous rainbow trout ( Oncorhynchus mykiss (Walbaum, 1792)) and nonpiscivorous fathead minnows ( Pimephales promelas Rafinesque, 1820) on growth, survival, susceptibility to predation, and antipredator behaviours of naïve long-toed salamanders ( Ambystoma macrodactylum Baird, 1850). Trout reduced salamander hatchling and larvae survival to nearly zero in predation trials and caused a 39% reduction in salamander survival within outdoor mesocosms. Salamander larvae did not increase their refuge use or alter activity patterns in the presence of trout. These results imply that allotopic distributions of trout and salamanders observed in several field surveys likely result from the inability of larvae to recognize introduced predators as a threat. Minnows also caused significant reductions in salamander survival (41%) and growth (37%) in mesocosms, and exposure to minnow cues caused larvae to spend more time within a refuge. Reduced salamander survivorship and growth in the mesocosms was likely due to competition for limiting zooplankton and (or) cannibalism. These results indicate that introductions of small-bodied, nonpiscivorous fishes can reduce amphibian survival and growth to at least the same extent as introduced trout.

scholarly journals Population structure and connectivity in the Mediterranean sponge Ircinia fasciculata are affected by mass mortalities and hybridization

Heredity ◽  
2016 ◽  
Vol 117 (6) ◽  
pp. 427-439 ◽  
Author(s):  
A Riesgo ◽  
R Pérez-Portela ◽  
L Pita ◽  
G Blasco ◽  
P M Erwin ◽  
...  
Keyword(s):  
Population Structure ◽  
The Mediterranean ◽  
Mass Mortalities

scholarly journals Predation and intertidal zonation of barnacles at Leigh, New Zealand

1975 ◽  
Vol 9 (3) ◽  
pp. 355-378 ◽  
Author(s):  
Penelope A. Luckens
Keyword(s):  
New Zealand ◽  
Intertidal Zonation

scholarly journals Correlation between Detection of a Plasmid and High-Level Virulence of Vibrio nigripulchritudo, a Pathogen of the Shrimp Litopenaeus stylirostris

2008 ◽  
Vol 74 (10) ◽  
pp. 3038-3047 ◽  
Author(s):  
Yann Reynaud ◽  
Denis Saulnier ◽  
Didier Mazel ◽  
Cyrille Goarant ◽  
Frédérique Le Roux
Keyword(s):  
Genetic Markers ◽  
New Caledonia ◽  
Subtractive Hybridization ◽  
Epidemiological Studies ◽  
Etiological Agent ◽  
Subtraction Library ◽  
High Virulence ◽  
High Level ◽  
Mass Mortalities ◽  
Coral Pathogen

ABSTRACT Vibrio nigripulchritudo, the etiological agent of Litopenaeus stylirostris summer syndrome, is responsible for mass mortalities of shrimp in New Caledonia. Epidemiological studies led to the suggestion that this disease is caused by an emergent group of pathogenic strains. Genomic subtractive hybridization was carried out between two isolates exhibiting low and high virulence. Our subtraction library was constituted of 521 specific fragments; 55 of these were detected in all virulent isolates from our collection (n = 32), and 13 were detected only in the isolates demonstrating the highest pathogenicity (n = 19), suggesting that they could be used as genetic markers for high virulence capacity. Interestingly, 10 of these markers are carried by a replicon of 11.2 kbp that contains sequences highly similar to those of a plasmid detected in Vibrio shilonii, a coral pathogen. The detection of this plasmid was correlated with the highest pathogenicity status of the isolates from our collection. The origin and consequence of this plasmid acquisition are discussed.

scholarly journals Rocky Intertidal Zonation Pattern in Antofagasta, Chile: Invasive Species and Shellfish Gathering

PLoS ONE ◽  
2014 ◽  
Vol 9 (10) ◽  
pp. e110301 ◽  
Author(s):  
Juan Carlos Castilla ◽  
Patricio H. Manríquez ◽  
Alejandro Delgado ◽  
Verónica Ortiz ◽  
María Elisa Jara ◽  
...  
Keyword(s):  
Invasive Species ◽  
Rocky Intertidal ◽  
Zonation Pattern ◽  
Intertidal Zonation ◽  
Shellfish Gathering

Rocky shore intertidal zonation as a means of monitoring and assessing shoreline biodiversity recovery

2003 ◽  
Vol 46 (3) ◽  
pp. 305-307 ◽  
Author(s):  
Derek V Ellis
Keyword(s):  
Rocky Shore ◽  
Intertidal Zonation

Behavioural basis of intertidal zonation in Eurydice pulchra Leach

1976 ◽  
Vol 23 (2) ◽  
pp. 135-144 ◽  
Author(s):  
J. Alheit ◽  
E. Naylor
Keyword(s):  
Intertidal Zonation

Foraging and mating opportunities influence refuge use in the fiddler crab, Uca mjoebergi

2007 ◽  
Vol 73 (4) ◽  
pp. 711-716 ◽  
Author(s):  
Leeann T. Reaney
Keyword(s):  
Fiddler Crab ◽  
Refuge Use ◽  
Mating Opportunities
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