scholarly journals Effects of handling and short-term captivity: a multi-behaviour approach using red sea urchins, Mesocentrotus franciscanus

PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e6556 ◽  
Author(s):  
Aneesh P.H. Bose ◽  
Daniel Zayonc ◽  
Nikolaos Avrantinis ◽  
Natasha Ficzycz ◽  
Jonathan Fischer-Rush ◽  
...  

Understanding the effects of captivity-induced stress on wild-caught animals after their release back into the wild is critical for the long-term success of relocation and reintroduction programs. To date, most of the research on captivity stress has focused on vertebrates, with far less attention paid to invertebrates. Here, we examine the effect of short-term captivity (i.e., up to four days) on self-righting, aggregation, and predator-escape behaviours in wild-caught red sea urchins, Mesocentrotus franciscanus, after their release back into the wild. Aggregation behaviour, which has been linked to feeding in sea urchins, was not affected by handling or captivity. In contrast, the sea urchins that had been handled and released immediately, as well as those that were handled and held captive, took longer to right themselves and were poorer at fleeing from predators than wild, unhandled sea urchins. These results indicate that handling rather than captivity impaired these behaviours in the short term. The duration of captivity did not influence the sea urchin behaviours examined. Longer-term monitoring is needed to establish what the fitness consequences of these short-term behavioural changes might be. Our study nevertheless highlights the importance of considering a suite of responses when examining the effects of capture and captivity. Our findings, which are based on a locally abundant species, can inform translocation efforts aimed at bolstering populations of ecologically similar but depleted invertebrate species to retain or restore important ecosystem functions.

2021 ◽  
Author(s):  
Andreas Heinemeyer ◽  
Anthony Jones ◽  
Tom Holmes ◽  
Abby Mycroft ◽  
Will Burn ◽  
...  

<p>Large parts of the rather cold and wet UK uplands are dominated by peatlands, specifically blanket bogs. During most of the Holocene, those peatlands have locked away carbon for many thousands of years due to water logged conditions leading to low decomposition rates and long-term accumulation of soil organic matter as peat. Importantly, this peat accumulation not just increases carbon but also water storage and provides many other associated and vital ecosystem services to societies across the UK, such as drinking water.</p><p>However, since around 1850, much of the UK uplands have been under grousemoor management to encourage red grouse populations as part of shooting estates, including controversial drainage, heather burning, and more recently, alternative cutting. Due to the rather weak and often conflicting evidence base around impacts of such management more research is needed to unravel climate and management impacts on ecosystem functions and associated ecosystem services. Much of the controversial evidence base is based on short-term monitoring of only a few years (potentially misinterpreting short-term disturbance effects as long-term impacts), single site studies (not capturing edaphic and climatic variability) and space-for-time studies, often with different treatments located at different sites (and thus limited in their ability or even unable to disentangle confounding variables such as site environmental conditions/history from actual management impacts).</p><p>We present long-term data from a previously government-funded, and currently multi-funded and to 10 years extended, peatland management project investigating ecosystem functions from plot-to-catchment scales on three grousemoor sites across Northern England. The <strong>Peatland-ES-UK</strong> project is part of the Ecological Continuity Trust’s long-term monitoring network and is based on a Before-After Control-Impact design approach. Each of three replicated field sites consist of two paired 10 ha catchments under previous burn rotation management and part of current peatland restoration work. After one year of pre-treatment monitoring, catchments were allocated either a continuation of burning or an alternative mowing post-treatment catchment management rotation (the latter containing several 5x5 m sub-treatment monitoring plots including no management). Monitoring includes assessing hydrology, water budgets, carbon cycling, greenhouse gas emissions, peat properties, vegetation composition and key biodiversity.</p><p>We shall provide new and sometimes surprising and even challenging insights into blanket bog ecosystem functioning in an ecosystem services and habitat status context, highlighting the importance of long-term monitoring, experimental design, spatio-temporal changes and remaining uncertainties. Specifically, we shall present findings about water storage (water tables and stream flow), long-term carbon accumulation rates (peat cores), recent carbon budgets (flux chambers) and net greenhouse gas emissions (including methane). We also present some peatland model predictions around various land use impacts on past, present and future carbon storage potential. Finally, we call for a joint funding commitment across research, policy and land user organisations to ensure the continuation of such joined-up ‘real-world’ experimental and long-term monitoring work, as part of a national applied research platform network, as it provides the “gold standard” to inform evidence-based policy directly related to practitioner needs.</p>


2009 ◽  
Vol 24 (3) ◽  
pp. 1344-1351 ◽  
Author(s):  
Thiago ClÉ de Oliveira ◽  
JosÉ Maria de Carvalho Filho ◽  
Roberto Chouhy Leborgne ◽  
Math H. J. Bollen

2020 ◽  
Vol 40 (4) ◽  
pp. 565-574
Author(s):  
Chris N. Thomson

Long-term monitoring of the Masked Owl Tyto novaehollandiae in a semi-urban landscape before, during and after large-scale habitat removal identified a positive response in breeding activity in the short-term and a change in prey selectivity. Over the longer term, the loss in habitat had a negative impact on site fidelity. A pair of Masked Owls exhibited high fidelity to a particular breeding territory before and during the removal of large areas of habitat within this territory. Breeding success occurred over two consecutive seasons during the removal of known habitat and other disturbance events at which time the pair and their offspring were observed to exploit disturbed habitat and newly created forest edges in search of prey. Breeding activity was supported by an increased dietary focus on introduced rodents and other mammals displaced during habitat clearing. Fidelity to the breeding territory became more irregular post-disturbance and after two years the territory appeared to be abandoned. This response may suggest that the cumulative loss of habitat for established pairs as a result of urban expansion is likely to adversely affect reproductive success and site fidelity in the longer term.


2006 ◽  
Vol 2 (2) ◽  
pp. 253-256 ◽  
Author(s):  
Reinmar Hager ◽  
Rufus A Johnstone

Recent studies on mammals investigating parent-of-origin-specific effects such as genomic imprinting and maternal effects have demonstrated their impact on short-term measures of fitness, for example offspring growth. However, the long-term fitness consequences of parent-of-origin-specific effects and their role outside the immediate mother–offspring interaction remain largely unexplored. Here, we show that female mice mated to males that inherited the same set of paternal and maternal genes as themselves have a higher reproductive success than females mated to males of reciprocal genotype. Furthermore, we demonstrate that the early social environment experienced by an individual influences its reproductive success. Females raised with unrelated siblings in a mixed litter had a subsequent lower reproductive success than those that were fostered together with all their biological siblings in unmixed litters. Our results highlight the important influence of parent-of-origin-specific effects and conditions in early development on long-term reproductive success in mammals and suggest that parent-of-origin-specific effects may provide the underlying mechanism for beneficial coadaptation between genotypes, for example, in mate choice.


2014 ◽  
Vol 3 (2) ◽  
pp. 77-81
Author(s):  
László Halmos ◽  
Gábor Bozsó ◽  
Elemér Pál-Molnár

Abstract Sodic areas can be found in every continent. The main condition of the salt accumulation in sodic soils is the near-surface groundwater. There is a serious environmental problem in the Danube-Tisza Interfluve which threatens the natural alkaline lakes and sodic areas with landscape destruction. The aim of this study is to collect information about the seasonal geochemical cycles in the sediments of Lake Fehér. Based on the results of this research, the protection of the similar alkaline wetlands could be more effective. The study area was an alkaline lake system sorrounded by sodic areas called Lake Fehér by Szeged. The investigation was carried out in three periods based on the seasonal distribution of precipitation. There were eight sampling dates on the same site during one meteorological year. For the short-term monitoring, the type of the soil, the particle content, the pH and the EC were investigated. The groundwater and precipitation data of the last century were used for the long-term observation. The results show that the precipitation decreased in the southern part of the Danube-Tisza Interfluve in the last 100 years. Along with the decreasing precipitation, the groundwater level has been sinking. Knowing the dynamics of the area, the problem could be managed; otherwise, the ecosystems of the alkaline lakes will vanish.


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