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Journal articles on the topic 'Freshwater invertebrates'

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Author: Grafiati

Published: 4 June 2021

Last updated: 1 August 2024

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1

Dalbina, Saltanat Serikbekovna, Meruert Galymovna Kuanyshbaeva, and Gulnara Sikimbaevna Saparova. "FRESHWATER INVERTEBRATES OF LAKE ZAISAN." Globus 7, no. 7(64) (November 4, 2021): 20–25. http://dx.doi.org/10.52013/2658-5197-64-7-4.

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In this article, freshwater invertebrates are studied. Lake Zaisan is considered as an object. The article updates the list of invertebrate fauna of Lake Zaisan, which is currently relevant. The article presents steps for collecting invertebrates and determining their species composition. According to the results of the study, the species composition of thirty-nine invertebrates was determined. The author notes that the species composition of invertebrates is higher on the coast than in the lake environment, that is, the number of planktonic invertebrates is higher than that of benthos invertebrates. The author notes that the Reed thickets and kelp areas along the Lake Shore are a favorable environment for the growth of benthos organisms, that is, the predominance of benthos invertebrates, and on the sandy shores of the lake there are no invertebrates. In the course of the study, it was found that the lake is dominated by OAR-footed Scorpions, oligochetes, chironomid larvae, ashamurt Scorpions, slug worms. High-altitude Scorpions, leeches, leeches, and water mites are rare. The article considers the problem of reducing the water level of Lake Zaisan from one hundred to five hundred meters over the past year. It is worth noting that the number of benthos organisms has also decreased, as the areas of coastal reeds and algae have dried up. In addition, it is concluded that the ichthyofauna of the lake has also decreased. The result of this research work can be applied to the standard curriculum of the discipline zoology. The information contained in the article can be used by students studying at biological faculties of higher educational institutions, biology teachers in secondary schools. It will be interesting for secondary schools near Lake zaisan to use the identified invertebrates and their photos as a local component.

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2

Macadam, C. R. "Freshwater aquatic invertebrates on the Isle of May, Scotland." Glasgow Naturalist 27, no. 3 (2021): 42–47. http://dx.doi.org/10.37208/tgn27323.

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The invertebrate fauna of freshwater habitats on the Isle of May, Scotland was investigated and compared with the results from surveys undertaken in 1958. Overall, the freshwater invertebrate fauna appears to be diminished. However, several species were recorded as new to the Isle of May. Although the reasons for the apparent decline in freshwater invertebrates on the island are unclear, an increase in the temporary nature of the habitats due to climate warming may be a contributing factor.

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3

Hills, Kasey A., Ross V. Hyne, and Ben J. Kefford. "Species of freshwater invertebrates that are sensitive to one saline water are mostly sensitive to another saline water but an exception exists." Philosophical Transactions of the Royal Society B: Biological Sciences 374, no. 1764 (December 3, 2018): 20180003. http://dx.doi.org/10.1098/rstb.2018.0003.

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Coal mining and extraction of methane from coal beds generate effluent with elevated salinity or major ion concentrations. If discharged to freshwater systems, these effluents may have adverse environmental effects. There is a growing body of work on freshwater invertebrates that indicates variation in the proportion of major ions can be more important than salinity when determining toxicity. However, it is not known if saline toxicity in a subset of species is representative of toxicity across all freshwater invertebrates. If patterns derived from a subset of species are representative of all freshwater invertebrates, then we would expect a correlation in the relative sensitivity of these species to multiple saline waters. Here, we determine if there is a correlation between the acute (96 h) lethal toxicity in freshwater invertebrates to synthetic marine salts (SMS) and sodium bicarbonate (NaHCO 3 ) added to dechlorinated Sydney tap water. NaHCO 3 is a major component of many coal bed effluents. However, most salinization in Australia exhibits ionic composition similar to seawater, which has very little HCO 3 − . Across all eight species tested, NaHCO 3 was 2–50 times more toxic than SMS. We also observed strong correlations in the acute toxicity of seven of the tested species to SMS and NaHCO 3 . The strongest relationship (LC50 r 2 = 0.906) was dependent on the exclusion of one species, Paratya australiensis (Decopoda: Atyidae), which was the most sensitive species tested to NaHCO 3 , but the second-most tolerant of SMS. We conclude that differences in the toxicity of different proportions of major ions can be similar across a wide range of species. Therefore, a small subset of the invertebrate community can be representative of the whole. However, there are some species, which based on the species tested in the current study appear to be a minority, that respond differently to saline effluent and need to be considered separately. We discuss the implications of this study for the management of saline coal bed waters. This article is part of the theme issue ‘Salt in freshwaters: causes, ecological consequences and future prospects'.

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4

Bilton, David T., Joanna R. Freeland, and Beth Okamura. "Dispersal in Freshwater Invertebrates." Annual Review of Ecology and Systematics 32, no. 1 (November 2001): 159–81. http://dx.doi.org/10.1146/annurev.ecolsys.32.081501.114016.

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5

Fujita, D. S., A. M. Takeda, R. Coutinho, and F. C. Fernandes. "Influence of antifouling paint on freshwater invertebrates (Mytilidae, Chironomidae and Naididae): density, richness and composition." Brazilian Journal of Biology 75, no. 4 suppl 1 (November 27, 2015): 70–78. http://dx.doi.org/10.1590/1519-6984.05114.

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Abstract We conducted a study about invertebrates on artificial substrates with different antifouling paints in order to answer the following questions 1) is there lower accumulation of organic matter on substrates with antifouling paints, 2) is invertebrate colonization influenced by the release of biocides from antifouling paints, 3) is the colonization of aquatic invertebrates positively influenced by the material accumulated upon the substrate surface and 4) is the assemblage composition of invertebrates similar among the different antifouling paints? To answer these questions, four structures were installed in the Baía River in February 1st, 2007. Each structure was composed of 7 wood boards: 5 boards painted with each type of antifouling paints (T1, T2, T3, T4 and T5), one painted only with the primer (Pr) and the other without any paint (Cn). After 365 days, we observed a greater accumulation of organic matter in the substrates with T2 and T3 paint coatings. Limnoperna fortunei was recorded in all tested paints, with higher densities in the control, primer, T2 and T3. The colonization of Chironomidae and Naididae on the substrate was positively influenced by L. fortunei density. The non-metric multidimensional scaling (NMDS) of the invertebrate community provided evidence of the clear distinction of invertebrate assemblages among the paints. Paints T2 and T3 were the most similar to the control and primer. Our results suggest that antifouling paints applied on substrates hinder invertebrate colonization by decreasing the density and richness of invertebrates.

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6

Rennie, Michael D., Ted Ozersky, and David O. Evans. "Effects of formalin preservation on invertebrate stable isotope values over decadal time scales." Canadian Journal of Zoology 90, no. 11 (November 2012): 1320–27. http://dx.doi.org/10.1139/z2012-101.

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Stable isotope values derived from chemically preserved organisms are a valuable resource for documenting long-term ecosystem changes. However, isotopic correction factors of preservation effects applied to samples stored for decades are frequently based on studies lasting only months, assuming that the effects of preservation stabilize within a short time frame. Very few studies test this critical assumption. We validated this assumption for formalin-preserved invertebrate tissues, finding no significant difference between mean isotopic δ13C and δ15N values of material stored 1–15 years across taxa. Preservation effects were evaluated for Amphipoda, Chironomidae, Dreissenidae, Ephemeroptera, Gastropoda, Isopoda, Sphaeridae, Oligochaeta, and Trichoptera. On average, freshwater benthos δ13C was lower by approximately 2‰ after formalin fixation, whereas δ15N values were not different from control samples. Fixation effects were similar among taxa, but were more pronounced in Gastropoda and Sphaeridae for δ13C and in Trichoptera for δ15N. We reviewed the literature to show that preserved freshwater zooplankton δ13C were slightly but significantly lower relative to control samples (–0.2‰) and higher in δ15N (+0.25‰). The mean decline among marine invertebrate δ13C was greater than for freshwater invertebrates after 1+ years of formalin preservation, but effects on δ15N were not different between marine and freshwater invertebrates.

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7

Abelho, Manuela, Rui Ribeiro, and Matilde Moreira-Santos. "Salinity Affects Freshwater Invertebrate Traits and Litter Decomposition." Diversity 13, no. 11 (November 21, 2021): 599. http://dx.doi.org/10.3390/d13110599.

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We evaluated the effect of seawater intrusion in coastal ecosystems on the freshwater invertebrate community and on leaf litter decomposition under realistic scenarios in six outdoor freshwater mesocosms containing fauna and flora, to which increasing volumes of seawater were added. The resulting salinity values were 0.28 (control, freshwater only), 2.0, 3.3, 5.5, 9.3, and 15.3 mS cm−1. The effect of salinity was assessed for 65 days after seawater intrusion, by computing the deviation of values in each treatment in relation to the control. Our results show that seawater intrusion into freshwaters will affect the invertebrate communities and organic matter decomposition, with salinities of up to 3.3–5.5 mS cm−1 having opposite effects to salinities of more than 9.3 mS cm−1. There was a net negative effect of the two highest salinities on mass loss and richness of the invertebrates associated with the decomposing leaves. Regarding the invertebrate communities of the mesocosms, there was a net negative effect of the intermediate salinity levels on abundance and richness. Invertebrate life cycle traits conferring resilience and resistance tended to increase with low and decrease with high salinity values, while avoidance traits showed an opposite trend, and these responses were more pronounced on the later stage community. These wave-like responses of the invertebrate species traits to increasing salinity suggest that the life-history and physiological adaptations most suitable to cope with osmotic stress will differ between low and high salinity levels.

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8

Behrens-Chapuis, Simone, Fabian Herder, and Matthias F. Geiger. "Adding DNA barcoding to stream monitoring protocols – What’s the additional value and congruence between morphological and molecular identification approaches?" PLOS ONE 16, no. 1 (January 4, 2021): e0244598. http://dx.doi.org/10.1371/journal.pone.0244598.

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Although aquatic macroinvertebrates and freshwater fishes are important indicators for freshwater quality assessments, the morphological identification to species-level is often impossible and thus especially in many invertebrate taxa not mandatory during Water Framework Directive monitoring, a pragmatism that potentially leads to information loss. Here, we focus on the freshwater fauna of the River Sieg (Germany) to test congruence and additional value in taxa detection and taxonomic resolution of DNA barcoding vs. morphology-based identification in monitoring routines. Prior generated morphological identifications of juvenile fishes and aquatic macroinvertebrates were directly compared to species assignments using the identification engine of the Barcode of Life Data System. In 18% of the invertebrates morphology allowed only assignments to higher systematic entities, but DNA barcoding lead to species-level assignment. Dissimilarities between the two approaches occurred in 7% of the invertebrates and in 1% of the fishes. The 18 fish species were assigned to 20 molecular barcode index numbers, the 104 aquatic invertebrate taxa to 113 molecular entities. Although the cost-benefit analysis of both methods showed that DNA barcoding is still more expensive (5.30–8.60€ per sample) and time consuming (12.5h), the results emphasize the potential to increase taxonomic resolution and gain a more complete profile of biodiversity, especially in invertebrates. The provided reference DNA barcodes help building the foundation for metabarcoding approaches, which provide faster sample processing and more cost-efficient ecological status determination.

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9

Wood, Timothy S. "Aquarium Culture of Freshwater Invertebrates." American Biology Teacher 58, no. 1 (January 1, 1996): 46–50. http://dx.doi.org/10.2307/4450072.

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10

Zalizniak, Liliana, Ben J. Kefford, and Dayanthi Nugegoda. "Is all salinity the same? I. The effect of ionic compositions on the salinity tolerance of five species of freshwater invertebrates." Marine and Freshwater Research 57, no. 1 (2006): 75. http://dx.doi.org/10.1071/mf05103.

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Salts of marine origin, predominantly consisting of Na+ and Cl− ions, are dominant in most Australian inland saline waters. The proportions of other ions, Ca2+, Mg2+, SO42–, HCO3− and CO32–, in the water may influence salinity tolerance of freshwater organisms and thus the effect of increasing salinity may vary with difference in ionic proportions. We exposed freshwater invertebrates to different concentrations of four ionic compositions and compared them with commercial sea salt (Ocean Nature). They were: synthetic Ocean Nature (ONS) and three saline water types (ONS but without: SO42–, HCO3− and CO32– (S1); Ca2+, HCO3− and CO32– (S2); and Ca2+ and Mg2+ (S3)), which are considered to be the predominant saline water types in south-eastern Australia and the Western Australian wheatbelt. The 96-h LC50 values for the five media were determined for six invertebrate species and sub-lethal responses were observed for two species. There were no differences between responses of invertebrates to various ionic compositions in acute toxicity tests. However, in prolonged sub-lethal tests, animals reacted differently to the various ionic compositions. The greatest effect was observed in water types lacking Ca, for which plausible physiological mechanisms exist. Variation in ionic proportions should be taken into account when considering sub-lethal effects of salinity on freshwater invertebrates.

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11

Mykitchak, T., V. Kozlovskyy, and O. Mateleshko. "Invertebrate hydrobiont fauna transformation in the Dombrovskyi pit lake during the period of 2014-2018." Visnyk of Lviv University. Biological series, no. 84 (July 19, 2021): 94–104. http://dx.doi.org/10.30970/vlubs.2021.84.09.

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The aquatic invertebrate community of Dombrovskyi pit lake was investigated during 2014–2018. 25 species were recorded there. The only permanent component of plankton in the community is rotifer Brachionus plicatilis Müller, 1786; of benthos and neuston is hemipteran Sigara lateralis (Leach, 1817), beetle Hydrobius fuscipes (Linnaeus, 1758), flies Aedes sp., Ochlerotatus lepidonotus (Edwards, 1920), Culicoides salinarius Kieffer, 1914, Ephydra glauca Meigen, 1830 are permanent components of benthos and neuston. The main diversity of invertebrates is concentrated in littoral zone up to 2 m of depth. This is primarily due to the desalination of these areas by surface runoff. Over the last decade the mineralization of the surface water layer has decreased from 120–138 to 25–28 g/l. Combined with the desalination of water, the increase of species diversity of aquatic invertebrates was noticed in spring seasons (from 7 to 17 taxa). The freshwater taxa, which are not tolerant even to low water salinity, appeared in the community in 2018 (7–25 % of the species diversity), among them Hydrometra stagnorum (Linnaeus, 1758), Rhyacophila tristis Pictet, 1834, Coelambus impressopunctatus (Schaller, 1783), Enochrus coarctatus (Gredler, 1863), Hydrophilus caraboides (Linnaeus, 1758). The role of freshwater taxa, which are tolerant to low water salinity (up to 5 g/l), increased from 0–10 % of the species diversity in 2014–2015 to 22–35 % in 2018. Among them Eucyclops serrulatus (Fischer, 1851), Candona sp., Cypris pubera O. F. Müller, 1776, Cloeon dipterum (Linnaeus, 1760), Libellula depressa Linnaeus, 1758, Sympecta fusca Vander Linden, 1820, Paracorixa concinna (Fieber, 1848) was noted in 2018 for the first time. On the contrary, the number of saltwater taxa decreased from 20–29 % (2014–2015) to 5–14 % (2018). The saltwater aquatic invertebrate community of this pit lake has transformed into brakish-freshwater one over time. 83 % taxa of aquatic invertebrate communities from freshwater puddles near reservoir coast are noted in the Dombrovska reservoir. The introduction of species from protective canals of the reservoir is unlikely, as only 5 % of taxa from there are marked in it. The main way of the forming communities of invertebrates in this reservoir is the periodical flooding of freshwater coastal puddles.

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12

Sertić Perić, Mirela, Renata Matoničkin Kepčija, Ines Radanović, Biserka Primc, and Ivan Habdija. "Freshwater reefs as mesohabitats for the assessment of diel invertebrate drift patterns." Natura Croatica 29, no. 2 (March 31, 2021): 185–203. http://dx.doi.org/10.20302/nc.2020.29.26.

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Freshwater reefs (known as tufa barriers) are special karst features recognized for highly heterogeneous habitat structures, complex hydrogeological features, and unique macrozoobenthos drift (downstream dispersal) patterns. Our study objective was to investigate diel and seasonal drift patterns between barriers and pools, both composed of moss-rich and fishless mesohabitat types, aligned on a small spatial scale within the karst, tufa-precipitating Plitvice Lakes hydrosystem. We monthly sampled drift at the two mesohabitat types (barriers and pools) during midday and dusk and examined quantitative and qualitative drift compositions, including drifting invertebrates, moss, and associated particulate organic and inorganic matter (APOIM). Barriers displayed higher invertebrate drift densities than those of pools. The same pattern was observed for moss and APOIM. At both mesohabitat types, invertebrate drift showed peak but highly variable densities during late spring and summer (mean >100 individuals m-3), whereas during late winter and early spring the drift densities were 5-fold lower than those densities. The nonmetric multidimensional scaling analysis revealed that invertebrate drift seasonality was influenced by seasonal drift patterns of aquatic moss and moss-dwelling invertebrate taxa. Adult and/or larval Riolus spp. and larval Hemerodromia spp. were found to be the most significant for the separation of midday and dusk within the NMDS ordination of barriers and pools. At barriers, midday drift densities of invertebrates, moss, and APOIM were higher than the respective dusk records. Within pools, invertebrate drift was largely aperiodic. We suggest that increased midday and/or aperiodic drift are a consequence of the lack of fish between barrier- and pool-mesohabitats. Our results further indicated that aquatic invertebrates inhabiting fast-flowing barriers and slow-flowing pools mostly exhibit “passive drift” mediated by transport agents such as water flow and dislodged aquatic vegetation. The observed spatio-temporal drift patterns are also likely influenced by ontogenetic shifts in drift periodicity (i.e., shifts depending on the development stage and morphological characteristics of the individual taxa) as well as benthic distribution of moss-dwelling invertebrate taxa. We can conclude that biotic (vs. abiotic) controls of drift are likely minimized in the fishless case of the freshwater reefs and associated barrier–pool sequences within Plitvice Lakes hydrosystem.

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13

Evtimova, Vesela, Ivan Pandourski, and Lyubomir Kenderov. "Freshwater invertebrates from Livingston and Horseshoe Islands, Maritime Antarctica." IOP Conference Series: Earth and Environmental Science 1305, no. 1 (February 1, 2024): 012004. http://dx.doi.org/10.1088/1755-1315/1305/1/012004.

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Abstract Various processes trigger the formation, disappearance or expansion of lakes and ponds in Antarctica. Such dynamic ecosystems are a challenging environment for their inhabitants. We studied aquatic invertebrates in lakes and ponds on Livingston and Horseshoe Islands, Antarctica. Invertebrate fauna was either poor, in terms of diversity, or completely lacking. The taxa we found were of the polyphyletic group Protozoa; phylla Nematoda, Tardigrada, Annelida (subclass Oligochaeta) and Arthropoda (subclass Collembola, classes Insecta, Branchiopoda and Copepoda). Whenever a species dominated the communities, it was the copepod Boeckella poppei. When other taxa were recorded, their density was relatively low with few exceptions (Macrothrix oviformis, Branchinecta gaini). High density of B. poppei was recorded in circa 65% of all samples and the majority of the lakes/ponds with fauna. Most of the studied water bodies were oligotrophic, likely among the reasons for the poor faunal diversity, together with the harsh environmental conditions in Antarctica, e.g. low temperatures and long periods during which the lakes are frozen or completely dried out. The formation of new lakes and ponds poses the question on the pathways of distribution of aquatic organisms and why some ponds and lakes are densely populated, while others are deprived of aquatic invertebrates.

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14

Wilhelm, Frank M., David C. Lasenby, Ralph M. Wilhelm, and Ron Plante. "A new recorder for simultaneously recording the activity and oxygen consumption of small benthic invertebrates." Canadian Journal of Fisheries and Aquatic Sciences 54, no. 12 (December 1, 1997): 2888–93. http://dx.doi.org/10.1139/f97-179.

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Respiration studies of small benthic invertebrates are generally completed without regard to the inclusion of a substrate or the quantification of activity in the experimental chamber. We describe a new activity monitoring system for continuously recording the activity and oxygen consumption of small benthic invertebrates in water with the presence of a substrate. We used the freshwater amphipod Diporeia hoyi to test the new system. Activity rates were significantly higher without sediment than with sediment, and oxygen consumption was directly related to activity. Future invertebrate respiration studies, especially those with infaunal organisms, will benefit from such a system by allowing researchers to determine possible test condition - treatment interactions.

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15

Lee, David G., and Sarah A. Corbet. "Evaluating colonization samplers for freshwater invertebrates." Journal of Biological Education 23, no. 1 (March 1989): 23–31. http://dx.doi.org/10.1080/00219266.1989.9655019.

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16

Dartnall, Herbert J. G. "Freshwater invertebrates of subantarctic South Georgia." Journal of Natural History 39, no. 37 (November 25, 2005): 3321–42. http://dx.doi.org/10.1080/00222930500190186.

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17

Erben, R., J. Lajtner, and G. Klobuc̆ar. "Phenol accumulation in the freshwater invertebrates." Toxicology Letters 78 (August 1995): 32. http://dx.doi.org/10.1016/0378-4274(95)94726-w.

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18

Murkin, Henry R., and Bruce D. J. Batt. "THE INTERACTIONS OF VERTEBRATES AND INVERTEBRATES IN PEATLANDS AND MARSHES." Memoirs of the Entomological Society of Canada 119, S140 (1987): 15–30. http://dx.doi.org/10.4039/entm119140015-1.

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AbstractThis paper reviews the interactions of vertebrates and invertebrates in peatlands and marshes to assess current knowledge and future research needs. Living organisms may interact through a number of direct trophic and nutrient pathways and a variety of non-trophic, habitat-dependent relationships. Freshwater marshes and peatlands are dynamic aquatic environments and organisms that occupy these areas must be adapted to a wide range of environmental conditions. The avian community illustrates the main interactions of invertebrates and vertebrates in peatlands and marshes. Waterfowl, along with fish and furbearers, are the most economically important vertebrates using these habitats. Each of these groups has important trophic and habitat links to the invertebrates within wetlands.The most common interaction between vertebrates and invertebrates is the use of invertebrates as food by vertebrates. Few studies, however, have dealt with trophic dynamics or secondary production within wetlands. Waterfowl, fish, and many other wetland vertebrates, during all or part of their life cycles, regularly feed on invertebrates. Some invertebrates are vectors of disease and parasites to vertebrates. Vertebrates can directly affect the structural substrate that invertebrates depend on as habitat through consumption of macrophytes or through the use of living and dead plant material in the construction of houses and nests. Conversely, herbivorous invertebrates may directly affect the survival and distribution of macrophytes in wetlands. Macrophyte distribution, in turn, is an important factor in determining vertebrate use of wetlands. The general lack of both taxonomic and ecological information on invertebrates in wetlands is the main hindrance to future elucidation of vertebrate–invertebrate interactions in these environments. Development of invertebrate sampling techniques suitable for wetland habitats also is necessary. More specific research needs must be met to develop a better understanding of the structure and function of these dynamic systems.

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19

Plante, Céline, and John A. Downing. "Production of Freshwater Invertebrate Populations in Lakes." Canadian Journal of Fisheries and Aquatic Sciences 46, no. 9 (September 1, 1989): 1489–98. http://dx.doi.org/10.1139/f89-191.

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This research draws together data on the secondary production of 164 invertebrate populations in 51 lakes to test the hypothesis that the annual production of aquatic invertebrate populations is significantly correlated with the mean annual population biomass, individual body mass, and ambient temperature. Further analyses examine the effects of water chemistry, trophic status, and lake morphometry. Mean annual biomass, individual body mass, and the mean annual water temperature accounted for 79% of the variance in the logarithm of annual secondary production. In contrast to the findings of previous studies, the ratio of mean annual production to mean annual biomass [Formula: see text] varied systematically with population biomass. No significant difference was found between the secondary production of littoral and open water invertebrate populations. Analyses also suggest that zoobenthic and zooplanktonic populations of similar biomass, body mass, and temperature have similar rates of secondary productivity. Analyses demonstrate that the total phosphorus concentration in the water column, and other trophic indicators were positively correlated with secondary production. The pH, lake depth, thermocline depth, drainage area, and the water turnover rate were also found to be correlated with the secondary productivity of natural populations of lentic invertebrates.

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20

Wilson, Natasha J., Jamie E. Seymour, and Craig R. Williams. "Predation of two common native frog species (Litoria ewingi and Crinia signifera) by freshwater invertebrates." Australian Journal of Zoology 62, no. 6 (2014): 483. http://dx.doi.org/10.1071/zo14026.

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The primary aim of this study was to identify aquatic invertebrate predators of amphibian eggs and tadpoles in an area of South Australia. The presence and abundance of aquatic invertebrates was monitored at four field sites for a period of 5–6 months; this revealed notonectids, freshwater crayfish and odonates to be amongst the most common invertebrate predator types. The ability of these predators to consume eggs and tadpoles of the native Australian frogs Litoria ewingi and Crinia signifera was then investigated. Freshwater crayfish (Cherax destructor) were the most prolific consumers of frog eggs and tadpoles. The notonectid Enithares woodwardi significantly impacted tadpole survivorship for both species while Anisops sp. was less successful at capturing and consuming these tadpoles. Caddisfly nymphs (Lectrides varians and Leptorussa darlingtoni) reduced egg survivorship but not to the same extent as C. destructor. Unlike some predators, which prey upon particular life stages, freshwater crayfish are large, polytrophic omnivores that can act as important predators of both anuran eggs and tadpoles. Given that predation is a key source of mortality in juveniles, identification of likely common predators is useful for understanding the regulation of amphibian populations.

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Kreiling, Agnes-Katharina, Daniel P. Govoni, Snæbjörn Pálsson, Jón S. Ólafsson, and Bjarni K. Kristjánsson. "Invertebrate communities in springs across a gradient in thermal regimes." PLOS ONE 17, no. 5 (May 5, 2022): e0264501. http://dx.doi.org/10.1371/journal.pone.0264501.

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In many respects, freshwater springs can be considered as unique ecosystems on the fringe of aquatic habitats. This integrates their uniqueness in terms of stability of environmental metrics. The main objective of our study was to evaluate how environmental variables may shape invertebrate diversity and community composition in different freshwater spring types and habitats within. In order to do so, we sampled invertebrates from 49 springs in Iceland, where we included both limnocrene and rheocrene springs. At each site, samples were taken from the benthic substrate of the spring (“surface”) and the upwelling groundwater at the spring source (“source”). To collect invertebrates from the spring sources we used a modified method of “electrobugging” and Surber sampler for collecting invertebrates from the surface. In total, 54 invertebrate taxa were identified, mostly Chironomidae (Diptera). Chironomid larvae also dominated in terms of abundance (67%), followed by Ostracoda (12%) and Copepoda (9%). The species composition in the surface samples differed considerably between rheocrene and limnocrene springs and was characterised by several indicator species. Alpha diversity was greater at the surface of springs than at the source, but the beta diversity was higher at the source. Diversity, as summarized by taxa richness and Shannon diversity, was negatively correlated with temperature at the surface. At the source, on the other hand, Shannon diversity increased with temperature. The community assembly in springs appears to be greatly affected by water temperature, with the source community of hot springs being more niche-assembled (i.e., affected by mechanisms of tolerance and adaptation) than the source community of cold springs, which is more dispersal-assembled (i.e., by mechanisms of drift and colonization).

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22

Wang, Xiaoyan, Qing Wang, Yufeng Yang, and Wenbo Yu. "Comparison of invertebrate diversity in lake waters and their resting eggs in sediments, as revealed by high-throughput sequencing (HTS)." Knowledge & Management of Aquatic Ecosystems, no. 421 (2020): 19. http://dx.doi.org/10.1051/kmae/2020011.

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Aquatic invertebrate diversity reflects water quality and the health of aquatic ecosystems and should be monitored as an essential feature of freshwater ecosystems. The resting eggs of aquatic invertebrates in sediments populate the overlying water. The diversity of invertebrates in waters and their resting eggs in sediments in Baiyangdian Lake, Xiongan, North China, were assessed using high-throughput sequencing (HTS) with a pair of 18S rRNA gene adaptor-linked primers. The total of 99 operational taxonomic units (OTUs) derived from 353,755 invertebrate sequences (mostly zooplankton) were revealed by this study. A total of 50 species in the water samples including 20 rotifers, 11 copepods, 1 cladoceran and 18 other species were sorted out. In the sediment 37 species, including 21 rotifers, 3 copepods, 1 cladoceran and 12 other species, were identified. There were 24 species in common between water and corresponding sediments. Invertebrate OTU richness in water samples was higher than that in sediments (p < 0.01), while there was no significant difference in the Shannon-Wiener index. These results suggest that HTS is a promising alternative for efficient biodiversity assessment and monitoring.

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Morin, Antoine, and Nathalie Bourassa. "Modèles empiriques de la production annuelle et du rapport P/B d'invertébrés benthiques d'eau courante." Canadian Journal of Fisheries and Aquatic Sciences 49, no. 3 (March 1, 1992): 532–39. http://dx.doi.org/10.1139/f92-063.

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Published data on secondary production of running water invertebrates are analyzed by multiple regression to quantify the relationship between productivity (P, in grams dry mass per square metre per year) and biomass (B, in grams dry mass per square metre), mean individual mass (M, in grams dry mass), and annual mean water temperature (T, in degrees Celsius) to compare productivity of major taxonomic groups and to compare to invertebrate populations from other aquatic ecosystems. The equation P = 0.18 B1.01M−0.34 100.037T explains 87% of the variability in log P in the 291 lotic invertebrate populations analyzed. Significant differences were detected among major taxonomic groups, but these differences account for only about 4% of the variability in log P. Once the effect of biomass, mean individual mass and water temperature are taken into account, productivity of lake and stream invertebrate populations is quite similar, although productivity is a linear function of biomass in streams and not in lakes. Comparison of models for running waters, lake and marine ecosystems suggests that marine invertebrates are less productive than freshwater populations.

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Ahn, Dong-Ha, Chi-Woo Lee, Hee-Min Yang, Ji-Hun Song, Jae-In Kwon, Su-Jung Ji, Mi-Hyun Park, and Gi-Sik Min. "Freshwater Invertebrates of Jindo Island in Korea." Animal Systematics, Evolution and Diversity, spc9 (December 31, 2016): 37–44. http://dx.doi.org/10.5635/ased.2016.sin9.049.

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Dartnall, Herbert J. G., and Valdon R. Smith. "Freshwater Invertebrates of Sub-Antarctic Marion Island." African Zoology 47, no. 2 (October 2012): 203–15. http://dx.doi.org/10.3377/004.047.0207.

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Dartnall, Herbert J. G., and Valdon R. Smith. "Freshwater invertebrates of sub-Antarctic Marion Island." African Zoology 47, no. 2 (April 2012): 203–15. http://dx.doi.org/10.1080/15627020.2012.11407548.

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Tockner, Klement. "Invertebrates in Freshwater Wetlands of North America." Freshwater Biology 45, no. 1 (September 2000): 103–4. http://dx.doi.org/10.1046/j.1365-2427.2000.00645.x.

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Sun, Ye, Yasuhiro Takemon, and Yosuke Yamashiki. "Freshwater spring indicator taxa of benthic invertebrates." Ecohydrology & Hydrobiology 20, no. 4 (October 2020): 622–31. http://dx.doi.org/10.1016/j.ecohyd.2019.02.003.

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Anderson, Richard L. "Toxicity of synthetic pyrethroids to freshwater invertebrates." Environmental Toxicology and Chemistry 8, no. 5 (May 1989): 403–10. http://dx.doi.org/10.1002/etc.5620080506.

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Luoto, Tomi P., Mimmi Oksman, and Antti E. K. Ojala. "Invertebrate communities of the High Arctic ponds in Hornsund." Polish Polar Research 37, no. 1 (March 1, 2016): 105–19. http://dx.doi.org/10.1515/popore-2016-0003.

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AbstractHow environmental conditions influence current distributions of organisms at the local scale in sensitive High Arctic freshwaters is essential to understand in order to better comprehend the cascading consequences of the ongoing climate change. This knowledge is also important background data for paleolimnological assessments of long-term limnoecological changes and in describing the range of environmental variability. We sampled five limnologically different freshwater sites from the Fuglebergsletta marine terrace in Hornsund, southern Svalbard, for aquatic invertebrates. Invertebrate communities were tested against non-climatic environmental drivers as limnological and catchment variables. A clear separation in the communities between the sites was observed. The largest and deepest lake was characterized by a diverse Chironomidae community but Cladocera were absent. In a pond with marine influence, crustaceans, such as Ostracoda, Amphipoda, and calanoid Copepoda were the most abundant invertebrates. Two nutrient-rich ponds were dominated by a chironomid,Orthocladius consobrinus, whereas themost eutrophic pond was dominated by the cladoceranDaphnia pulex, suggesting decreasing diversity along with the trophic status. Overall, nutrient related variables appeared to have an important influence on the invertebrate community composition and diversity, the trophic state of the sites being linked with their exposure to geese guano. Other segregating variables included water color, presence/absence of fish, abundance of aquatic vegetation and lake depth. These results suggest that since most of these variables are climate-driven at a larger scale, the impacts of the ongoing climate change will have cumulative effects on aquatic ecosystems.

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Mioduchowska, Monika, Edyta Konecka, Bartłomiej Gołdyn, Tom Pinceel, Luc Brendonck, Dunja Lukić, Łukasz Kaczmarek, et al. "Playing Peekaboo with a Master Manipulator: Metagenetic Detection and Phylogenetic Analysis of Wolbachia Supergroups in Freshwater Invertebrates." International Journal of Molecular Sciences 24, no. 11 (May 28, 2023): 9400. http://dx.doi.org/10.3390/ijms24119400.

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The infamous “master manipulators”—intracellular bacteria of the genus Wolbachia—infect a broad range of phylogenetically diverse invertebrate hosts in terrestrial ecosystems. Wolbachia has an important impact on the ecology and evolution of their host with documented effects including induced parthenogenesis, male killing, feminization, and cytoplasmic incompatibility. Nonetheless, data on Wolbachia infections in non-terrestrial invertebrates are scarce. Sampling bias and methodological limitations are some of the reasons limiting the detection of these bacteria in aquatic organisms. In this study, we present a new metagenetic method for detecting the co-occurrence of different Wolbachia strains in freshwater invertebrates host species, i.e., freshwater Arthropoda (Crustacea), Mollusca (Bivalvia), and water bears (Tardigrada) by applying NGS primers designed by us and a Python script that allows the identification of Wolbachia target sequences from the microbiome communities. We also compare the results obtained using the commonly applied NGS primers and the Sanger sequencing approach. Finally, we describe three supergroups of Wolbachia: (i) a new supergroup V identified in Crustacea and Bivalvia hosts; (ii) supergroup A identified in Crustacea, Bivalvia, and Eutardigrada hosts, and (iii) supergroup E infection in the Crustacea host microbiome community.

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dos Reis, Eloisa Borges, Fernanda S. Farnese, Marilene S. Oliveira, Andreia C. M. Rodrigues, Aline S. P. Dornelas, Renato A. Sarmento, João C. P. de Souza, Erika C. Resende, and Althiéris S. Saraiva. "Responses of Freshwater Planarian Girardia tigrina to Fipronil-Based Insecticide: Survival, Behavioral and Physiological Endpoints." Diversity 14, no. 9 (August 23, 2022): 698. http://dx.doi.org/10.3390/d14090698.

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Fipronil is a pyrazole insecticide used to control undesirable insect populations. Due to its large-scale application, there is the potential for surface waters’ contamination, with toxic action for non-target organisms, and consequent impacts on aquatic ecosystems. Planarians are potential non-target aquatic invertebrates to these insecticides. They are widespread in tropical freshwaters and have been proposed as good candidates to assess the toxic effects of freshwater systems contaminated by insecticides. Thus, the present study aims to evaluate the sublethal concentrations of a fipronil-based insecticide that may affect the planarian physiology. After chronic exposure to Regent 800 WG®, a significant decrease in locomotor velocity (LOEC—6.25 mg·L−1), regeneration of the auricles and photoreceptors (LOEC—3.13 mg·L−1), and reproduction (fecundity—LOEC 12.5 mg·L−1) were observed. The results of our study demonstrate that long-term exposure to a pyrazole insecticide can compromise non-target aquatic invertebrates while reinforcing the need for a better investigation of complementary parameters (such as behavior, regeneration, and reproduction) for a more accurate risk assessment of commercial pesticide toxicity in freshwater systems.

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Arianoutsou, Margarita, Chloe Adamopoulou, Pavlos Andriopoulos, Ioannis Bazos, Anastasia Christopoulou, Alexandros Galanidis, Eleni Kalogianni, et al. "HELLAS-ALIENS. The invasive alien species of Greece: time trends, origin and pathways." NeoBiota 86 (May 30, 2023): 45–79. http://dx.doi.org/10.3897/neobiota.86.101778.

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The current paper presents the first effort to organize a comprehensive review of the Invasive Alien Species (IAS) of Greece. For this purpose, a database was developed with fields of information on the taxonomy, origin, ecology and pathways of introduction of terrestrial, freshwater and marine species. Our database includes a) taxa in the Union’s list that are present in Greece, b) taxa already present in Greece and considered to be invasive, and c) taxa highly likely to enter Greece in the next 10 years and become invasive. The Database served as the starting point for the compilation of the National List of Alien Invasive Species (HELLAS-ALIENS) in compliance with the EU Regulation 1143/2014. Overall, the HELLAS-ALIENS comprises 126 species, i.e. 32 terrestrial and freshwater plant species, 14 terrestrial invertebrates, 28 terrestrial vertebrates, 30 freshwater fishes and invertebrates and 22 marine species. Terrestrial invertebrates, birds and mammals are mainly of Asiatic origin. Most of the terrestrial plants have their native geographical distribution in the Americas (North and South). Most of the freshwater invertebrates and fishes are of North American origin, while the majority of the marine species are of Indo-Pacific origin. The first records of IAS concern terrestrial plant species, and date back to the 19th century, while those in freshwater and marine ecosystems seem to have been systematically recorded some decades later. Regarding the pathways of introduction, most of the taxa arrived in Greece or are expected to arrive through escape from confinement and unaided. The majority of the terrestrial, freshwater and marine species have been evaluated as of High-risk for the indigenous biodiversity and only 3% of the species listed have been evaluated of Low-risk. Our results provide an important baseline for management and action plans, as required by the priorities set by the European Union through the Biodiversity Strategy for 2030.

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Weeks, Emily S., Russell G. Death, Kyleisha Foote, Rosalynn Anderson-Lederer, Michael K. Joy, and Paul Boyce. "Conservation Science Statement. The demise of New Zealand's freshwater flora and fauna: a forgotten treasure." Pacific Conservation Biology 22, no. 2 (2016): 110. http://dx.doi.org/10.1071/pc15038.

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New Zealand’s freshwater ecosystems support a diverse and unique array of endemic flora and fauna. However, the conservation of its freshwater biodiversity is often overlooked in comparison to terrestrial and marine environments, and is under increasing threat from agricultural intensification, urbanisation, climate change, invasive species, and water abstraction. New Zealand has some of the highest levels of threatened freshwater species in the world with, for example, up to 74% of native freshwater fish listed as endangered or at risk. Threatened species are often discounted in water policy and management that is predominantly focussed on balancing water quality and economic development rather than biodiversity. We identify six clear actions to redress the balance of protecting New Zealand’s freshwater biodiversity: 1. change legislation to adequately protect native and endemic fish species and invertebrates, including those harvested commercially and recreationally; 2. protect habitat critical to the survival of New Zealand’s rare and range-restricted fish, invertebrate and plant freshwater species; 3. include river habitat to protect ecosystem health in the National Objectives Framework for the National Policy Statement for freshwater; 4. establish monitoring and recovery plans for New Zealand’s threatened freshwater invertebrate fauna; 5. develop policy and best management practices for freshwater catchments in addition to lakes and rivers to also include wetlands, estuaries, and groundwater ecosystems; and 6. establish, improve, and maintain appropriately wide riparian zones that connect across entire water catchments. We have published these recommendations as a scientific statement prepared for the Oceania Section of the Society for Conservation Biology to facilitate communication of our thoughts to as wide an audience as possible (https://conbio.org/images/content_groups/Oceania/Scientific_Statement_1_.pdf, accessed 8 February 2016).

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Valdecasas, A. G., and A. Baltanás. "A note on the use of ANGELIER's fluid for freshwater invertebrates." Archiv für Hydrobiologie 115, no. 2 (May 2, 1989): 313–16. http://dx.doi.org/10.1127/archiv-hydrobiol/115/1989/313.

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36

Kostenko, A. G., L. P. Gaponova, and M. S. Prokopuk. "Some alien species of aquatic invertebrates in the water bodies of the nature reserve fund of the Kyiv metropolis." Journal of Native and Alien Plant Studies, no. 1 (December 28, 2021): 175–82. http://dx.doi.org/10.37555/2707-3114.1.2021.247574.

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The invasion of alien species of freshwater invertebrates and the associated changes in the faunistic composi- tion of local ecosystems are a serious threat to the conservation of biodiversity. In this work, we supplement the existing list of alien species with information about three more species of non-native freshwater invertebrates, which have formed stable populations in water bodies of Ukraine. These are two representatives of flatworms: Girardia tigrina (Girard, 1850) and Stenostomum saliens Kepner & Carter, 1931, as well as a representative of copepods, Eucyclops roseus Ishida, 1997.

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37

Irons III, John G., L. Keith Miller, and Mark W. Oswood. "Ecological adaptations of aquatic macroinvertebrates to overwintering in interior Alaska (U.S.A.) subarctic streams." Canadian Journal of Zoology 71, no. 1 (January 1, 1993): 98–108. http://dx.doi.org/10.1139/z93-015.

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Freshwater invertebrates of northern regions are faced annually with freezing of shallow habitats. Several responses to habitat freezing are possible, including migration to favorable habitats and physiological adaptations such as freeze-avoidance or freeze-tolerance. We thawed sections of frozen stream gravel and identified the live and dead invertebrates present. Chironomidae and Empididae (Diptera) constituted >90% of individuals found in frozen habitats: Empididae showed substantial survival in frozen habitats. We also tested the ability of Alaskan stream invertebrates to survive in habitats that freeze. In a series of laboratory experiments we showed that most taxa found in Alaskan streams do not have the ability to survive even moderately subzero temperatures (e.g., −1.0 °C). When faced with an advancing freezing front, these taxa actively moved away. We suggest that most aquatic invertebrate taxa survive winter by either migrating away from a freezing front or remaining in habitats that do not freeze. Chironomidae and Empididae, however, can overwinter in frozen habitat, and Empididae show high survival upon thawing of frozen stream gravels. Predicted changes in temperature and precipitation patterns at these latitudes due to global climate warming may have effects on the availability of overwintering habitat for stream invertebrates that result in changes in the structure and function of high-latitude stream ecosystems.

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38

Deserti, María I., Karina S. Esquius, Alicia H. Escalante, and Fabián H. Acuña. "Trophic ecology and diet of Hydra vulgaris (Cnidaria; Hydrozoa)." Animal Biology 67, no. 3-4 (2017): 287–300. http://dx.doi.org/10.1163/15707563-00002537.

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Hydra is a genus of common, sessile, solitary freshwater cnidarians, which are defined as carnivorous and efficient predators. The purpose of this study was to obtain information on the feeding habits and diet of Hydra vulgaris collected from its natural habitat in Nahuel Rucá Lake (Buenos Aires Province, Argentina). We found three categories of food items in the coelenteron: algae, fungi, and small invertebrates. Algae dominated the diet in terms of abundance and frequency of occurrence, but their volumetric contribution was almost negligible, as was their possible nutritional value. Invertebrate prey captured, using active predation, represented the major volumetric contribution, with four different taxa found. The detection of phytoplankton in the gastral cavities reveals the input of some organisms present in the surrounding waters in addition to the invertebrates. This information is novel, since studies on the natural diet of Hydra are very scarce.

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39

France, RL. "Nitrogen isotopic composition of marine and freshwater invertebrates." Marine Ecology Progress Series 115 (1994): 205–7. http://dx.doi.org/10.3354/meps115205.

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40

Raposeiro, Pedro Miguel, Cruz, Ana Mafalda, Hughes, Samantha Jane, and Costa , Ana Cristina. "Azorean freshwater invertebrates: Status, threats and biogeographic notes." Limnetica, no. 31 (June 15, 2012): 13–22. http://dx.doi.org/10.23818/limn.31.02.

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41

Cywinska, Alina, D. Crump, and D. Lean. "Influence of UV Radiation on Four Freshwater Invertebrates¶." Photochemistry and Photobiology 72, no. 5 (May 1, 2007): 652–59. http://dx.doi.org/10.1562/0031-8655(2000)0720652iourof2.0.co2.

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Cywinska, Alina, D. Crump, and D. Lean. "Influence of UV Radiation on Four Freshwater Invertebrates¶." Photochemistry and Photobiology 72, no. 5 (2000): 652. http://dx.doi.org/10.1562/0031-8655(2000)072<0652:iourof>2.0.co;2.

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43

Winder, L., M. Lefley, and B. Smith. "A key for freshwater invertebrates using fuzzy logic." Bioinformatics 13, no. 2 (1997): 169–74. http://dx.doi.org/10.1093/bioinformatics/13.2.169.

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44

Gerner, Nadine V., Kevin Cailleaud, Anne Bassères, Matthias Liess, and Mikhail A. Beketov. "Sensitivity ranking for freshwater invertebrates towards hydrocarbon contaminants." Ecotoxicology 26, no. 9 (September 6, 2017): 1216–26. http://dx.doi.org/10.1007/s10646-017-1847-7.

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45

Rossi, Loreto. "Interactions between Invertebrates and Microfungi in Freshwater Ecosystems." Oikos 44, no. 1 (March 1985): 175. http://dx.doi.org/10.2307/3544059.

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46

Ippolito, Alessio, Roberto Giacchini, Paolo Parenti, and Marco Vighi. "Natural variability of enzymatic biomarkers in freshwater invertebrates." Environmental Science and Pollution Research 24, no. 1 (October 18, 2016): 732–42. http://dx.doi.org/10.1007/s11356-016-7833-4.

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47

Mwangi, Joseph N., Ning Wang, Christopher G. Ingersoll, Doug K. Hardesty, Eric L. Brunson, Hao Li, and Baolin Deng. "Toxicity of carbon nanotubes to freshwater aquatic invertebrates." Environmental Toxicology and Chemistry 31, no. 8 (June 22, 2012): 1823–30. http://dx.doi.org/10.1002/etc.1888.

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48

Palatov, D. M., and A. M. Sokolova. "Freshwater sponges and their associated invertebrates in the Great Lakes Basin (Mongolia)." Ukrainian Journal of Ecology 7, no. 4 (December 29, 2017): 635–39. http://dx.doi.org/10.15421/2017_172.

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The Great Lakes Depression is a large semi-arid region, whose freshwater invertebrate fauna is poorly known. Examining 37 waterbodies, we found freshwater sponges Eunapius fragilis and Spongilla lacustris (fragments) in the only one small river. Invertebrate species complex found on the sponges comprises nine species, their contribution to the assemblage was assessed by the metabolic intensity index.

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Strona, Giovanni, Simone Fattorini, Barbara Fiasca, Tiziana Di Lorenzo, Mattia Di Cicco, Walter Lorenzetti, Francesco Boccacci, and Diana M. P. Galassi. "AQUALIFE Software: A New Tool for a Standardized Ecological Assessment of Groundwater Dependent Ecosystems." Water 11, no. 12 (December 6, 2019): 2574. http://dx.doi.org/10.3390/w11122574.

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We introduce a suite of software tools aimed at investigating multiple bio-ecological facets of aquatic Groundwater Dependent Ecosystems (GDEs). The suite focuses on: (1) threats posed by pollutants to GDE invertebrates (Ecological Risk, ER); (2) threats posed by hydrological and hydromorphological alterations on the subsurface zone of lotic systems and groundwater-fed springs (Hydrological-Hydromorphological Risk, HHR); and (3) the conservation priority of GDE communities (Groundwater Biodiversity Concern index, GBC). The ER is assessed by comparing tolerance limits of invertebrate species to specific pollutants with the maximum observed concentration of the same pollutants at the target site(s). Comparison is based on an original, comprehensive dataset including the most updated information on tolerance to 116 pollutants for 474 freshwater invertebrate species. The HHR is assessed by accounting for the main direct and indirect effects on both the hyporheic zone of lotic systems and groundwater-fed springs, and by scoring each impact according to the potential effect on subsurface invertebrates. Finally, the GBC index is computed on the basis of the taxonomical composition of a target community, and allows the evaluation of its conservation priority in comparison to others.

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Dostine, PL, and SR Morton. "Feeding Ecology of the Whiskered Tern, Chlidonias-Hybrida, in the Alligator Rivers Region, Northern-Territory." Wildlife Research 16, no. 5 (1989): 549. http://dx.doi.org/10.1071/wr9890549.

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Prey from stomachs of 55 whiskered terns collected on a freshwater floodplain in the monsoonal Northern Territory were identified and counted. The terns ate a wide variety of invertebrate animals, most of them aquatic or with aquatic affinities. The most important prey in terms of dry weight were small fish, particularly Eleotridae, and insects, particularly Coleoptera, Odonata and Hemiptera. Vertebrates constituted 51% by dry weight of the diet. Numerically, dominant groups were Coleoptera, Odonata and small fish. Sexual differences were evident in morphology and diet. Males were heavier, had longer bills and wider gapes, and consumed more fish; females ate more invertebrates.

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