scholarly journals Invasive Potential of Pet-Traded Pill-Box Crabs from Genus Limnopilos

Diversity ◽  
2019 ◽  
Vol 11 (6) ◽  
pp. 91 ◽  
Author(s):  
Jiří Patoka ◽  
Lucie Bohatá ◽  
Tomáš Karella ◽  
Jana Marková ◽  
Ernik Yuliana ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Native Species ◽  
Continuous Monitoring ◽  
Global Perspective ◽  
Decapod Crustaceans ◽  
Invasive Potential ◽  
Pet Trade ◽  
Climate Matching ◽  
Tropical Regions ◽  
Freshwater Crabs

The pet trade in aquatic animals is known to be one of the main sources of non-native species worldwide. Freshwater decapod crustaceans have increased in popularity as ornamentals in the last two decades. Freshwater crabs of the genus Limnopilos were discovered by hobby aquarists and introduced on the market in 2008. They are generally considered interesting additions to an aquarium, but information about their living requirements are scarce. Additionally, their invasive potential is not known. Here, we present a survey of the availability of Limnopilos crabs on the market in Europe and North America and analyzed the invasive potential of all species from the genus based on climate matching from a global perspective. The only species recorded in the pet trade is L. naiyanetri, but future introduction of other species is discussed. Certain tropical regions were identified as the most suitable for the potential establishment of Limnopilos crabs including the northern part of South America, and L. microrhynchus was evaluated as the highest risk species. In this pilot study, we also suggest some points to be answered regarding further improving the risk assessment and also recommend continuous monitoring of the market for ornamental decapods.

scholarly journals Occurrence of non-native red cherry shrimp in European temperate waterbodies: a case study from Hungary

2019 ◽  
pp. 9 ◽  
Author(s):  
András Weiperth ◽  
Veronika Gábris ◽  
Tibor Danyik ◽  
Anna Farkas ◽  
Pavlína Kuříková ◽  
...  
Keyword(s):  
Water Temperature ◽  
Native Species ◽  
Carpathian Basin ◽  
Decapod Crustaceans ◽  
Pet Trade ◽  
First Occurrence ◽  
Polluted Waters

The international pet trade has caused numerous introductions of non-native species globally. This is also true for freshwater decapod crustaceans including the red cherry shrimp. This tiny creature has been previously found in thermally polluted waters in Europe (Germany and Poland). Here, we present its first occurrence in Hungary and in the entire Carpathian Basin. The species was sampled once per month over 1 yr, from November 2017 to November 2018 in a natural thermal pond (spa) and also in an adjoining non-thermal brook in Miskolctapolca, Hungary. Shrimps were preyed upon by adult fishes in the locality but many individuals, including ovigerous females and juveniles, were recorded within the survey continuously. The density of shrimps was positively correlated with the water temperature, despite some individuals being found in the non-thermal stream and also in winter. We consider that the population of this species in Hungary is now well-established and self-sustaining.

scholarly journals Predicting the potential distribution of the vase tunicate Ciona intestinalis in Canadian waters: informing a risk assessment

2008 ◽  
Vol 65 (5) ◽  
pp. 788-794 ◽  
Author(s):  
Thomas W. Therriault ◽  
Leif-Matthias Herborg
Keyword(s):  
Risk Assessment ◽  
Native Species ◽  
Potential Distribution ◽  
Negative Impact ◽  
Ciona Intestinalis ◽  
Environmental Niche ◽  
Environmental Models ◽  
Introduced Range ◽  
Negative Impacts ◽  
Almost All

Abstract Therriault, T. W., and Herborg, L-M. 2008. Predicting the potential distribution of the vase tunicate Ciona intestinalis in Canadian waters: informing a risk assessment. – ICES Journal of Marine Science, 65: 788–794. A crucial step in characterizing the potential risk posed by non-native species is determining whether a potential invader can establish in the introduced range and what its potential distribution could be. To this end, various environmental models ranging from simple to complex have been applied to predict the potential distribution of an invader, with varying levels of success. Recently, in marine waters, tunicates have received much attention, largely because of their negative impacts on shellfish aquaculture. One of these species is the vase tunicate Ciona intestinalis, which recently has had a negative impact on aquaculture operations in Atlantic Canada and could pose a risk in Pacific Canada. To inform the risk assessment of this species, we evaluated two different types of environmental model. Simple models based on reported temperature or salinity tolerances were relatively uninformative, because almost all waters were deemed suitable. In contrast, a more complex genetic algorithm for rule-set prediction (GARP) environmental niche model, based on documented Canadian occurrence points, provided informative projections of the potential distribution in Canadian waters. In addition to informing risk assessments, these predictions can be used to focus monitoring activities, particularly towards vectors that could transport C. intestinalis to these favourable environments.

scholarly journals Plant-Soil Relationships ofBromus tectorumL.: Interactions among Labile Carbon Additions, Soil Invasion Status, and Fertilizer

2009 ◽  
Vol 2009 ◽  
pp. 1-7 ◽  
Author(s):  
Robert R. Blank ◽  
James A. Young
Keyword(s):  
Native Species ◽  
Control Strategies ◽  
Carbon Sources ◽  
Growth Cycle ◽  
Invasive Potential ◽  
Labile Carbon ◽  
Available N ◽  
Plant Soil ◽  
Exotic Grass ◽  
Carbon Additions

Invasion of western North America by the annual exotic grassBromus tectorumL. (cheatgrass) has been an ecological disaster. High soil bioavailability of nitrogen is a contributing factor in the invasive potential ofB. tectorum. Application of labile carbon sources to the soil can immobilize soil nitrogen and favor native species. We studied the interaction of labile carbon addition (sucrose), with soil invasion status and fertilizer addition on the growth ofB. tectorum. Soils were noninvaded (BNI) andB. tectoruminvaded (BI). Treatments were control, sucrose, combined fertilizer, and sucrose + fertilizer. The greenhouse experiment continued for 3 growth-cycles. After the 1st growth-cycle, sucrose addition reducedB. tectorumaboveground mass almost 70 times for the BI soil but did not significantly reduce growth in the BNI soil.B. tectorumaboveground mass, after the 1st growth-cycle, was over 27 times greater for BI control soils than BNI control soils. Although sucrose addition reduced soil-solution , tissue N was not significantly lowered, suggesting that reduction of soil available N may not be solely responsible for reduction inB. tectorumgrowth. Noninvaded soil inhibits growth ofB. tectorum. Understanding this mechanism may lead to viable control strategies.

scholarly journals Landscape structure and climate seasonality affect the amount, richness and diversity of pollen collected by honeybees in a Neotropical region of Colombia

2020 ◽  
Author(s):  
Paula María Montoya-Pfeiffer ◽  
Guiomar Nates-Parra
Keyword(s):  
Landscape Structure ◽  
Urban Areas ◽  
Native Species ◽  
Diversity Index ◽  
Forest Area ◽  
Colony Development ◽  
Monthly Precipitation ◽  
Forest Species ◽  
Tropical Regions ◽  
Pollen Species

AbstractPollen is the main food for honeybee broods and young workers and so colony development and reproduction rely heavily on pollen availability, both spatially and temporally, in the environment. Intensification of agriculture and climate seasonality are known to alter honeybee foraging patterns and pollen intake through changes in resource availability in temperate regions; however, little is known about how honeybees respond to such environmental factors in tropical regions.Pollen species collected by honeybees in a Neotropical agricultural region of Colombia were identified. The effects of landscape structure (landscape Shannon Diversity Index, forest area in 1000 m around the apiary) and climate seasonality (mean monthly precipitation) on the amount, richness and diversity of pollen collected by the honeybees were evaluated for all pollen species together and pollen species segregated according to forest and anthropic areas (croplands, grasslands, woodlands, urban areas).Honeybees were found to be much more associated with anthropic than forest pollen species regardless of landscape structure or precipitation. However, the amount, richness and diversity of pollen from all species and forest species responded positively to landscape diversity and forest area, suggesting an advantage for honeybees in obtaining small quantities of pollen from forest species, in spite of being well-adapted to forage in anthropic areas. Precipitation was found not to be related to the overall amount and overall richness of pollen collected by honeybees, suggesting that climate seasonality was not an important factor for pollen foraging. Nonetheless, overall pollen diversity was negatively affected by precipitation in less diverse landscapes, while anthropic pollen diversity was negatively affected in more forested landscapes. These findings are compared with those from temperate regions, and the implications for honeybee productivity and survival, and their interactions with Neotropical native species, are discussed.

scholarly journals Greenhouses – urban biodiversity hotspot of alien Oribatida (Acari) species

2020 ◽  
Vol 63 (1) ◽  
pp. 1-10
Author(s):  
Mateusz OSZUST ◽  
◽  
Ziemowit OLSZANOWSKI ◽  
Marta PRZYMUSZAŁA ◽  
d Aleksandra JAGIEŁŁO ◽  
...  
Keyword(s):  
Alien Species ◽  
Native Species ◽  
Biodiversity Hotspot ◽  
Oribatid Mites ◽  
Future Research ◽  
Tropical Species ◽  
Tropical Regions ◽  
Stable Conditions ◽  
The World ◽  
Different Parts

Palm houses and other greenhouses, due to maintaining constant temperature and humidity, allow the cultivation in Europe of plants from different parts of the world, even from tropical regions. However, sometimes they are also a habitat for alien species of spiders, mites, insect, etc. These animals have been introduced accidentally with contaminated plants, seeds, seedlings, soil and thanks to stable conditions maintained in greenhouses, they may colonize these places. Example of arthropods, of which even tropical species occur in several greenhouses, are oribatid mites – minute saprophagous arachnids that mostly inhabit soil. In Europe they are represented by about 2,000 species, while worldwide – over 10,000 taxa were described. The aim of this research was to investigate the selected greenhouses for the biodiversity of oribatid mites and the presence of non-native species. In total, 49 taxa were recorded, including 23 alien species (for example, a Neotropical taxon Galumna hamifer, or Oriental Suctobelbella parallelodentata). These results confirm that greenhouses are the places of occurrence of many alien oribatid species. The obtained results may be used in future research on the biology of poorly known tropical mites.

A.L.I.E.N. databases: addressing the lack in establishment of non-natives databases

Crustaceana ◽  
2014 ◽  
Vol 87 (10) ◽  
pp. 1192-1199 ◽  
Author(s):  
J. James ◽  
J. James ◽  
F. Slater ◽  
J. James ◽  
F. Slater ◽  
...  
Keyword(s):  
Native Species ◽  
Data Exchange ◽  
Conservation Strategies ◽  
Data Sets ◽  
Indigenous Species ◽  
Decapod Crustaceans ◽  
Ecological Problems ◽  
Control Programmes ◽  
Native Crayfish ◽  
National Databases

Among the principal threats to the conservation of global biodiversity are biological invasions. To monitor their range expansion and develop control programmes, comprehensive, national species’ databases need to be created and maintained. This is particularly important for invaders that are known to cause broad and significant ecological problems, such as decapod crustaceans, in particular crayfish. Initiatives such as the U.K. National Biodiversity Network have recognised the need to promote data exchange and are a valuable resource for collating individual survey records. However, for these data to be used efficiently for research and/or management purposes they need to be combined into national databases. This is challenging and time consuming as individual data-sets are typically in different formats. Here, we compile 25 459 non-native and native crayfish records (reported between 1870 and 2013) from England, Wales and Scotland into one database, CrayBase. Such national databases will help facilitate risk assessments for non-native species and promote conservation strategies for indigenous species by identifying populations under the greatest threat from invasives.

scholarly journals A looming exotic reptile pet trade in India: patterns and knowledge gaps

2021 ◽  
Vol 13 (6) ◽  
pp. 18518-18531
Author(s):  
A. Pragatheesh ◽  
V. Deepak ◽  
H.V. Girisha ◽  
Monesh Singh Tomar
Keyword(s):  
Social Media ◽  
Invasive Species ◽  
International Trade ◽  
Endangered Species ◽  
Native Species ◽  
Web Portals ◽  
Pet Trade ◽  
Wild Fauna ◽  
Reptile Species ◽  
Social Media Platforms

Commercial trade of exotic reptiles through CITES (the Convention on International Trade in Endangered Species of Wild Fauna and Flora) in India is relatively recent (<2 decades).  Social media platforms and web portals are known to be used for pet trade.  Exotic pet trade is not legally regulated within India.  Therefore, little is known on the scale at which this trade is carried out in India.  We conducted a two-year study between 2018 and 2020 gathering information of exotic reptile pet trade online and summarized CITES documentation of the yearly import export records from 1976 to 2018 by CITES secretariat.  This manuscript provides a baseline for the extent of the trade, invasive species and the species traded in mainland India.  We found that there is an extensive trade of exotic reptiles in the country, comprising 84 species including the highly venomous species such as Bitis gabonica.  According to CITES records of 1976–2018, 98.6% of the reptile imports into India have not been reported to the CITES management authorities in India.  We also found some evidence of trade in protected native species through the exotic pet trade network.  Furthermore, some highly threatened reptile species including many listed in Appendix I of CITES are traded in India. 

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