scholarly journals Distribution of the Ponto-Caspian Amphipods in Turkish Fresh Waters: An Overview

2011 ◽  
Vol 12 (2) ◽  
pp. 447 ◽  
Author(s):  
M. OZBEK
Keyword(s):  
Inland Waters ◽  
Amphipod Species ◽  
Fresh Waters ◽  
Distributional Patterns ◽  
New Localities ◽  
Pontogammarus Robustoides ◽  
Orchestia Cavimana ◽  
Dikerogammarus Haemobaphes

To date, 13 amphipod species [Dikerogammarus haemobaphes(Eichwald, 1841); D. istanbulensis Özbek & Özkan, 2011; D. gruberi Mateus & Mateus, 1990; Echinogammarus ischnusStebbing, 1899; Pontogammarus robustoides (Sars, 1894); P. maeoticus(Sowinsky, 1894); P. aestuarius(Derzhavin, 1924); Obesogammarus turcarum Stock, 1974; Amathillina cristata Sars, 1894; Chelicorophium curvispinum Sars, 1895; C. maeoticum(Sowinsky, 1898); C. robustum Sars, 1895 and Orchestia cavimana Heller, 1865] were reported from Turkey as the representatives of Ponto-Caspian amphipod fauna. Previous records and current distributional patterns of Ponto-Caspian amphipod crustaceans in Turkish inland waters were investigated. Three new localities were revealed as one of the southernmost points in distributional area of Pontogammarus robustoides (Sars, 1894).

Aspects of the chemical variability of some Tasmanian inland waters

1976 ◽  
Vol 27 (3) ◽  
pp. 351 ◽  
Author(s):  
RT Buckney
Keyword(s):  
Total Concentration ◽  
Inland Waters ◽  
Morphometric Characters ◽  
Fresh Waters ◽  
Ionic Concentrations ◽  
Geological Conditions ◽  
Chemical Variability ◽  
Saline Waters ◽  
The Mean ◽  
Standard Deviations

Variability of total concentration and of ionic concentrations (measured as the standard deviations) is proportional to a power of the mean concentrations in 25 Tasmanian waters. Stoichiometric variability is low in saline waters and can be high in fresh waters. Climate is recognized as being of primary importance in affecting variability, although morphometric characters exert an influence. Geological conditions are an important factor in determining stoichiometric variability.

scholarly journals Four Ponto-Caspian and one American gammarid species (Crustacea, Amphipoda) recently invading Polish waters

2002 ◽  
Vol 71 (4) ◽  
pp. 115-122 ◽  
Author(s):  
Krzysztof Jazdzewski ◽  
Alicja Konopacka ◽  
Michal Grabowski
Keyword(s):  
Alien Species ◽  
Gammarus Tigrinus ◽  
Invasion Routes ◽  
Pontogammarus Robustoides ◽  
Dikerogammarus Haemobaphes

The paper discusses recent drastic changes in the composition of Polish gammarid fauna, that occurred at the end of 20th century. This change was caused by the invasion of five alien species - four of Ponto-Caspian origin (Dikerogammarus haemobaphes, D. villosus, Obesogammarus crassus and Pontogammarus robustoides) and one of American origin (Gammarus tigrinus). Probable invasion routes are presented.

Type II microtrich sensilla of amphipods: variations in external morphology and distributional patterns

1997 ◽  
Vol 75 (7) ◽  
pp. 1155-1165 ◽  
Author(s):  
V. J. Steele ◽  
D. H. Steele
Keyword(s):  
External Morphology ◽  
Amphipod Species ◽  
Type Ii ◽  
Electron Microscopic ◽  
Distributional Patterns ◽  
Scanning Electron Microscopic ◽  
Sexually Mature ◽  
Cluster Pattern ◽  
Scanning Electron

Scanning electron microscopic observations of type II microtrichs on the integument of selected amphipods show that these sensilla vary in length from less than 2 to 25 μm and, with few exceptions, their external morphology is similar. Typically, these microtrichs occur in two dorsal and two lateral clusters on each somite. Exceptionally, there is a series of circumferential clusters. Sexually mature males of some amphipod species have many additional lateral clusters on somite 11. Type II microtrichs are also present on the telson but absent from the head. The most prevalent cluster pattern is a row in the form of a J, but this may be modified into a Y, a semicircle, or a curvilinear pattern.

scholarly journals Mouthpart Morphology of Three Sympatric Native and Nonnative Gammaridean Species:Gammarus pulex,G. fossarum, andEchinogammarus berilloni(Crustacea: Amphipoda)

2012 ◽  
Vol 2012 ◽  
pp. 1-23 ◽  
Author(s):  
Gerd Mayer ◽  
Andreas Maas ◽  
Dieter Waloszek
Keyword(s):  
Inland Waters ◽  
Amphipod Species ◽  
Atlantic Region ◽  
Central European ◽  
The North ◽  
Interspecific Differences ◽  
Sem Study ◽  
Established Species ◽  
North Western ◽  
Special Modes

In the last 20 years several nonnative amphipod species have immigrated inland waters of Germany and adjacent central European countries. Some of them have been very successful and could establish stabile populations. In some places, they have even replaced native or earlier established species. The gammaridEchinogammarus berillonioriginates from the Atlantic region of France and the north-western part of Spain and coexists in some central European waters with the nativeGammarus pulexandG. fossarum. Here, we describe and compare the mouthparts and other structures involved in food acquisition of these three sympatric gammaridean species. Our hypothesis was that differences in the mode of feeding of the three species could be the reason for their coexistence and that these differences would be expressed in differences in mouthpart morphology. The results of our SEM study demonstrate that there are indeed interspecific differences in details of the morphology of the feeding structures. This is especially true for the setation of antennae, maxillulae, gnathopods, and third uropods, which can be interpreted as adaptations to special modes of feeding. Generally, all three species are omnivorous, but specializations in details point to the possibility to use some food resources in a special effective way.

A checklist of Hyalella (Amphipoda) from Chile

Crustaceana ◽  
2013 ◽  
Vol 86 (12) ◽  
pp. 1426-1432 ◽  
Author(s):  
Patricio De los Ríos-Escalante ◽  
Juan J. Morrone ◽  
Reinaldo Rivera
Keyword(s):  
Atacama Desert ◽  
Inland Waters ◽  
Southern Patagonia ◽  
Distributional Patterns

Distributional patterns in Chile of species of the freshwater amphipod genus Hyalella were analysed. The results show that H. fossamanchini and H. kochi can be found in Andean mountain inland waters between 18-27°S, H. costera in coastal inland waters between 24-40°S, H. chiloensis and H. patagonica in inland waters between 39-51°S, and finally H. simplex and H. franciscae in inland waters south of 44°S. The literature is mainly based on studies recording species in northern and southern Patagonia and the Atacama desert. Few studies on the presence of Hyalella have been carried out in central Chilean and northern and central Patagonian inland waters.

Consumption of cyanobacteria by freshwater zooplankton: Implications for the success of 'top-down' control of cyanobacterial blooms in Australia

1994 ◽  
Vol 45 (5) ◽  
pp. 875 ◽  
Author(s):  
PI Boon ◽  
SE Bunn ◽  
JD Green ◽  
RJ Shiel
Keyword(s):  
Northern Hemisphere ◽  
Algal Blooms ◽  
Trophic Structure ◽  
Cyanobacterial Blooms ◽  
Inland Waters ◽  
Calanoid Copepods ◽  
Top Down ◽  
Fresh Waters ◽  
Toxic Cyanobacteria ◽  
The Common

Two main approaches have been mooted for the management of fresh waters to prevent or control cyanobacterial blooms: a 'bottom-up' approach in which the supply of essential nutrients is restricted, and a 'top-down' or 'biomanipulation' approach in which attempts are made to restructure the food web to maximize consumption of noxious cyanobacteria by herbivorous zooplankton. In this review, the published literature is examined to gauge whether the common zooplankton of Australian fresh waters have the capacity to control cyanobacterial blooms, especially of toxic forms, and thus whether the biomanipulation approach might be applied successfully in Australia. As zooplankton assemblages in Australian inland waters are quite different in composition from those of the Northern Hemisphere, they are unlikely to respond to manipulations of trophic structure in a similar way. The most common zooplankters in Australian inland waters, calanoid copepods and rotifers, have less potential for controlling cyanobacterial blooms than do large cladocerans. The latter are common in the Northern Hemisphere and are considered requisite for the control of cyanobacterial blooms. Toxic cyanobacteria, which cause the most severe environmental problems, have well documented detrimental effects on zooplankton. The few reports of zooplankton grazing on cyanobacteria in Australian fresh waters do not indicate that native zooplankton can consume noxious cyanobacteria at the rates required for control of algal blooms. There may, therefore, be grounds for strong reservations about the likely success of programmes proposed to control cyanobacterial blooms by the manipulation of trophic structure in Australian fresh waters.

scholarly journals Further steps of Cryptorchestia garbinii invasion in Polish inland waters with insights into its molecular diversity in Central and Western Europe

2020 ◽  
pp. 17
Author(s):  
Tomasz Rewicz ◽  
Jarosław Brodecki ◽  
Karolina Bącela-Spychalska ◽  
Alicja Konopacka ◽  
Michał Grabowski
Keyword(s):  
Western Europe ◽  
Molecular Diversity ◽  
Inland Waters ◽  
Dna Barcodes ◽  
Vistula River ◽  
Lake Garda ◽  
Oder River ◽  
Orchestia Cavimana ◽  
First Time ◽  
Locus Typicus

Cryptorchestia garbinii Ruffo, Tarocco and Latella, 2014 (Amphipoda: Talitridae), a semiterrestrial amphipod, reported (as Orchestia cavimana Heller, 1865) from the Polish inland waters, e.g., the lowermost Vistula River, for the first time in 2009. Now, we have reported this species from the upper Oder River, which is c.a. 350 km SE from the closest known localities near Berlin, Germany. We confirmed its identity by the DNA barcodes and showed that all individuals found so far in other countries in Central and Western Europe represent the same haplotype, excluding a singleton from the locus typicus of this species in Lake Garda, Italy.

scholarly journals Changes in the distribution of amphipods in the Daugava River, Latvia

2019 ◽  
Vol 29 (2) ◽  
pp. 99-102
Author(s):  
Jana Paidere ◽  
Aija Brakovska ◽  
Linda Bankovska ◽  
Dāvis Gruberts
Keyword(s):  
Biological Invasions ◽  
Scientific Information ◽  
Gammarus Pulex ◽  
The Other ◽  
Inland Waters ◽  
Macroinvertebrate Assemblages ◽  
The Future ◽  
Pontogammarus Robustoides

Scientific information on amphipods and other peracaridan crustaceans in Latvian inland waters is insufficient. Therefore investigations of these animals are indispensable, especially because of the ongoing biological invasions of Ponto-Caspian amphipods causing changes in macroinvertebrate assemblages. Our recent investigation revealed that the alien amphipod Gammarus varsoviensis dominates amphipods in the upper courses of the Daugava River, whereas the other alien amphipod Pontogammarus robustoides prevails in the lower reaches of the river. Both these Ponto-Caspian amphipods were found co-occurring with the indigenous Gammarus pulex in the middle course of the Daugava River upstream from the Pļaviņas Reservoir. We predict that in the future the indigenous G. pulex will be fully exterminated by alien amphipods in the Latvian part of the Daugava River.

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