Biological invasions: the case of planorbid snails

2005 ◽  
Vol 79 (3) ◽  
pp. 249-256 ◽  
Author(s):  
J.P. Pointier ◽  
P. David ◽  
P. Jarne
Keyword(s):  
Aquatic Plant ◽  
Biomphalaria Glabrata ◽  
Domestic Animals ◽  
Distribution Area ◽  
Long Distance Dispersal ◽  
Long Distance ◽  
Restricted Number ◽  
Helisoma Duryi ◽  
Indoplanorbis Exustus ◽  
Transmission Foci

AbstractA large number of planorbid snails are now commonly transported by man mainly through the aquatic plant trade. However, only a restricted number of species establish viable populations in a new habitat and a more restricted number spread. Only five planorbid species can be ranked in this last category and can be considered as pests because of their role in the transmission of parasites to humans or domestic animals:Biomphalaria glabrata,B. straminea,B. tenagophila,B. pfeifferiandIndoplanorbis exustus. The neotropicalB. glabrata,B. stramineaandB. tenagophilahave proven their capacity to invade another continent sometimes creating new transmission foci. The AfricanB. pfeifferiand the IndianI. exustushave also expanded their distribution area with long-distance dispersal. Other planorbid species, i.e.Helisoma duryi, Amerianna carinataandGyraulusspp. have been able to establish viable populations, but not to spread, presumably because they are limited to specific habitats or/and display poor competitive abilities.

scholarly journals Resurrection and typification of Elatine campylosperma (Elatinaceae), a long-forgotten waterwort species

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e4913
Author(s):  
Attila Takács ◽  
Attila Molnár V. ◽  
Balázs A. Lukács ◽  
Timea Nagy ◽  
Ádám Lovas-Kiss ◽  
...  
Keyword(s):  
Habitat Preferences ◽  
Distribution Area ◽  
Published Data ◽  
Herbarium Specimens ◽  
Long Distance Dispersal ◽  
Long Distance ◽  
Faecal Samples ◽  
Fulica Atra ◽  
Label Information

The name Elatine campylosperma Seub. is generally treated as one of the synonyms of E. macropoda Guss. However, recent morphological, phylogenetic and karyological studies indicate that this judgement should be revised. In the present paper we typify the name E. campylosperma, review its taxonomic history and provide a thorough description, with compilation of previously published data and our new measurements from in vitro cultures. Based on our herbarium survey, we outline its Atlantic-Mediterranean distribution area (Spain, France, Italy, Greece, Turkey and Algeria). Habitat preferences are summarized from our field observations, water quality measurements and the label information of the herbarium specimens examined. Intact E. campylosperma seeds were found in faecal samples of the Eurasian Coot (Fulica atra L.) in southern Spain and two of them were germinated, suggesting that E. campylosperma has a capacity for long distance dispersal via endozoochory.

Comment on ‘Seagrass Viviparous Propagules as a Potential Long-Distance Dispersal Mechanism’ by A. C. G. Thomson et al.

2015 ◽  
Vol 39 (1) ◽  
pp. 290-293 ◽  
Author(s):  
Elizabeth A. Sinclair ◽  
Renae Hovey ◽  
John Statton ◽  
Matthew W. Fraser ◽  
Marion L. Cambridge ◽  
...  
Keyword(s):  
Long Distance Dispersal ◽  
Long Distance ◽  
Dispersal Mechanism

An unexpected new record of the Mediterranean orchid, Ophrys bertolonii (Orchidaceae) in Central Europe

Biologia ◽  
2011 ◽  
Vol 66 (5) ◽  
Author(s):  
Attila Molnár V ◽  
András Máté ◽  
Gábor Sramkó
Keyword(s):  
Central Europe ◽  
New Record ◽  
Dispersal Ability ◽  
Long Distance Dispersal ◽  
Long Distance ◽  
Permanent Establishment ◽  
Adriatic Coast ◽  
Northward Expansion ◽  
Mediterranean Plant

AbstractOne flowering specimen of Ophrys bertolonii (s. str.) — a plant with a Circum-Adriatic distribution and hitherto unknown in other regions — was found on 7th May 2010 in the vicinity of Kunadacs (Central Hungary; N 47°00′ E 19°17′). The nearest known populations of this Mediterranean plant inhabit the Adriatic coast (ca. 450 km away) in Croatia, therefore this new occurrence represents a significant long distance dispersal event. The circumstances of the occurrence argue against introduction, but we can not decide now whether this new appearance is temporary or permanent. The permanent establishment of this strictly entomophilous plant requires the presence of its specific pollinator in the close neighbourhood of the habitat. However, no pollination was observed on the three flowers of the plant until 9th May, and one day later the stem had disappeared most likely due to grazing. Whatever the long-term fate of the plant is, this discovery represents a significant long distance (jump) dispersal event, and testifies to the dispersal ability of Ophrys species. Additionally, the appearance of a mature Adriatic plant in Central Europe fits well into the currently observed, climate change driven northward expansion of European orchids, therefore this finding most likely reflects a growing Mediterranean-like climatic influence in the region.

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