Kellicottia Bostoniensis Research Articles

American rotifer Kellicottia bostoniensis (Rousselet, 1908) (Rotifera: Brachionidae) in the Kama Reservoir (Kama River, Russia)

The American rotifer Kellicottia bostoniensis (Rousselet, 1908) was first recorded in the Kama Reservoir (Kama River, Middle Volga basin) in 2012. The species was found in over 70% of the samples; its maximum abundance was 2000 ind./m3. This alien species co-existed with closely related native species K. longispina (Kellicott). This is the easternmost location (56°–57° E) for K. bostoniensis in the Volga River basin and in Europe.

Current state and forecast of changing hydrobiont communities in the construction zone of the Nizhny Novgorod low-pressure hydrounit

The authors of the paper think that it is necessary to study the structural and functional changes of hydrobiocenoses in case of river runoff regulation and new reservoir creation to make competent, ecologically correct management decisions. The widespread use of the analogy method for the ecological forecasts of reservoirs state is shown. At the present time, the issue of diagnostics of ecological systems which falls into the zone of impact of the planned construction of the Nizhny Novgorod low-pressure hydrounit (NNPG) in the river hydraulics zone of the Cheboksary water reservoir has been actualized. The authors characterize the current state of the species structure of phyto-, zooplanktonocenosis and zoobenthocoenoses of this zone, including species richness, the ratio of quantitative indicators of the main systematic groups and dominant species. The paper shows hydrobiocenoses formation sources and types of anthropogenic impact on them. The authors forecast changes in the structural and functional characteristics of the communities of hydrobionts of the Sormovsky reservoir, taking into account the expected ecological situation after the construction of the Nizhny Novgorod low-pressure hydrounit, including the main limiting factors. As an analogue of a new reservoir, the Cheboksary reservoir in the first years of its existence was chosen. The possibility of spreading new invasive species (Kellicottia bostoniensis (Rousselet, 1908), Diaphanosoma orghidani (Negrea, 1982) and Gmelinoides fasciatus (Stebbing, 1899)) is considered in the paper. In conclusion the authors suggest permanent monitoring of the new reservoir.

Distribution of rotifer Kellicottia bostoniensis (Rousselet, 1908) (Rotifera: Brachionidae) in water bodies and watercourses of Nizhny Novgorod oblast

In view of frequent findings of the alien North American rotifer Kellicottia bostoniensis (Rousselet, 1908) in water bodies and watercourses of Russia, the generalization of information about its locations and ecological requirements in particular regions has become an urgent task. The rotifer K. bostoniensis was recorded in 32 water objects (19 watercourses, 13 water bodies) of Nizhny Novgorod oblast from 55° to 56° N and from 42° to 43° E. In most water bodies, we recorded K. bostoniensis for the first time. The invader is widespread in water bodies and watercourses with different morphometry, current velocity, transparency, water color, pH, conductivity, trophic status, and level of anthropogenic pollution. K. bostoniensis dwells in a wide range of water pollution: from quality classes II to VI (clean to extremely polluted) of water. The highest frequency of occurrence and density of the rotifer are mainly recorded in July in ponds of eutrophic streams with slow current, high concentrations of nutrients, and well-developed higher aquatic vegetation. In some water bodies, the invader frequently co-occurred with the aboriginal species Kellicottia longispina (Kellicott, 1879). Only K. bostoniensis was recorded in small streams within the precincts of the city of Nizhny Novgorod. A wide distribution of K. bostoniensis in Nizhny Novgorod oblast and the ability to live in water bodies with different complex of natural factors and degree of anthropogenic impact may indicate high ecological plasticity of the species and the possibility of its further expansion.

The small foreigner: new laws will promote the introduction of non-native zooplankton in Brazilian aquatic environments

Abstract Non-native species of zooplankton have been introduced in Brazilian continental aquatic environments for a variety of reasons (e.g., non-native fish stocking, aquaculture), but many pathways of zooplankton introductions remain unknown. Recently, the governor of the State of Amazonas passed Law No. 79/2016, which allows for aquaculture operations using non-native fish in that state. This change in policy will likely result in the species introduction or propagule pressure of non-native zooplankton such as: Mesocyclops ogunnus Onabamiro, 1957; Kellicottia bostoniensis (Rousselet, 1908); Daphnia lumholtzi Sars, 1885; Lernaea cyprinacea (Linnaeus, 1758); Lamproglena monodi Capart, 1944. Of further concern is federal law No. 5989/09, which proposes the use of non-native fish in Brazilian aquaculture nationwide. We believe that both laws will intensify the introduction of non-native zooplankton. Once established in aquatic environments, non-native species of zooplankton could result in negative impacts (e.g., a loss of ecosystem services, food web alterations). Therefore, Brazilian authorities should incentivize the use of local native species rather than pass laws that threaten the environment.

Distribution and ways of dispersion of American rotifer Kellicottia bostoniensis (Rousselet, 1908) (Rotifera: Brachionidae) in waterbodies of European Russia

In the first decade of the 21th century, the findings of a new invader, the American rotifer, Kellicottia bostoniensis (Rousselet, 1908), has become more frequent in Russia. By 2015 K. bostoniensis had been detected in more than 40 different waterbodies and watercourses of European part of Russia. American rotifer is a widely spread and common species in forest lakes and rivers of the Baltic Sea basin, Volga-Baltic watershed; in the Volga River basin it has spread southward to 55° N (lakes of the Oka and Pra rivers) and eastward to 45° E (the Kerzhenets River, Cheboksary Reservoir basin). The rotifers inhabit small ( 200 km2), shallow ( 20 m) waterbodies with a trophy range from oligo- to eutrophy. In Russia K. bostoniensis occurs in a wide range of color of water (30–680 degrees Pt–Co-scale) compared to waterbodies of Western Europe. The rotifer is tolerant to temperature regime and oxygen concentrations in water. In the hypolimnion of stratified lakes, K. bostoniensis reaches high abundance (>100000 ind./m3) at a very low concentration of dissolved oxygen (2.5 mg/L or about 20% of saturation) and water temperature of 5–12°С. The invader and aboriginal species K. longispina coexisted in deep lakes and deep parts of reservoirs (the depth more than 5 m); in shallow lakes only K. bostoniensis was found. On the contrary, in most parts of large reservoirs of the Upper Volga only K. longispina was recorded. The possibility and the direction of transfer of the rotifer by swimming birds are discussed.

<b>Geographical spread of the invasive species <i>Kellicottia longispina</i> (Kellicott, 1879) and <i>K. bostoniensis</i> (Rousselet, 1908): A scientometric approach

Processes related to biological invasion of inland waters have become a major issue due to the increasing number of cases associated with the potential effects of invasions. Kellicottia bostoniensis and K. longispina are rotifer species originating from North America and have become invasive in several continents. In this sense, this study carried out a scientometric analysis to analyze the geographical distribution and identify patterns of occurrence as well as to fill gaps on the knowledge of these species. The survey was based on articles indexed in databases from 1896 to 2014. There is a greater scientific knowledge of these species in the temperate region, and these are present in many different environments. In Brazil, there is a very small number of studies, and no record of K. longispina. Therefore, it is noteworthy the importance of studies on the occurrence and abundance of these species in poorly studied areas, such as subtropical and tropical regions, for a better understanding of their invasive potential, given the potential effects on different communities, which can affect the structure and dynamics of environments.

First record of the north American rotifer Kellicottia bostoniensis (Rousselet, 1908) from the Sozh River, Belarus

The alien species rotifer Kellicottia bostoniensis was recorded for the first time in oxbow at the Sozh River flood plain (Dnieper River basin, Republic of Belarus) in August 2013. This species was found in littoral zone at a depth of about 0.5 m.

American rotifer Kellicottia bostoniensis (Rousselet, 1908) (Rotifera: Brachionidae) in reservoirs of the Upper Volga Basin

Rotifer Kellicottia bostoniensis (Rousselet), typical for North American waterbodies, was found in three reservoirs (Ivankovo, Uglich, and Sheksna) of the Upper Volga Basin in 2005–2012. The size and density of mature rotifers (<4 thousands ind./m3) are comparable to or smaller than in the lakes that are the probable donors of this species.

Occurrence and abundance level of Kellicottia bostoniensis (Rousselet, 1908) in lakes of the Nizhniy Novgorod region

By the moment two species of rotifers of genus Kellicottia inhabit the lakes of Nizhniy Novgorod region: native representative—Kellicottia longispina (Kellicott, 1879) and the American invader—Kellicottia bostoniensis (Rousselet, 1908). The North American rotifer K. bostoniensis is found in the west and the southwest of the Nizhniy Novgorod region. Rotifers of this genus successfully develop mainly in deep reservoirs of different trophic status with waters of a small mineralization. K. longispina does not sustain a competition to the invader. The situation is aggravated with affinity of requirements to environmental conditions of these species.

Zooplankton Dynamics in a Eutrophic Urban Reservoir: Four Scenarios over a Hydrological Cycle

Normal 0 21 false false false PT-BR X-NONE X-NONE The Ibirité reservoir, built in the 1960's in order to attend the Petrobras water demand, receives untreated wastewater, which results in a process of eutrophication, with periodic cyanobacterial blooms. The present study describes the zooplankton community of the Ibirité reservoir in terms of richness, composition and abundance throughout a complete hydrological cycle (Oct/2007 to Oct/2008), and considering some environmental variables. Four scenarios, with different environmental conditions that reflected in the zooplankton community structure were identified and described with the aid of analysis ordination (DCA and CCA) and variance: Scenario 0 -characterized by the onset of the rainy season (summer) (Oct/2007 and 2008), a period of high temperatures, high relative water column stability and apex of cyanobacterial blooms. In this scenario, the zooplankton was dominated by rotifer Brachionus calyciflorus .-Scenario 1 (Dec/2007, Feb and Apr/2008) -the rainy season apex and collapse of the cyanobacterial bloom by dilution. A reduction in the abundance of rotifers and nauplii (microzooplankton) was recorded in this period as a consequence of dilution and flushing these organisms through the spillway. -Scenario 2 (Jun/2008) -refers to the dry season, during which the reservoir had a low stability of the water column and no cyanobacterial bloom. In this period we registered the highest values of species richness and abundance, mainly rotifers and cladocerans. This can be explained by an hydrodynamic instability favoring r-strategists (e.g. rotifers) and reduction of predation pressure by vertebrates as consequence of fish mortality has occurred during this period. -Scenario 3 (Aug/2008), which represented the transition between the dry (winter) and rainy (summer) seasons, found the reservoir partially stratified, with the onset of algal bloom. In this period, the presence of the invasive rotifer Kellicottia bostoniensis was recorded for the first time in Ibirité reservoir.

Kellicotia bostoniensis (Rousselet, 1908) (Rotifera: Brachionidae) in waterbodies of European Russia

The rotifer Kellicottia bostoniensis (Rousselet, 1908), which is common in North American water-bodies, has been recorded in 13 different lakes of the European part of Russia. A morphometric analysis has been made of populations from 7 lakes. The assumption has been made that the size of the spines of K. bostoniensis in small waterbodies depends on the presence of predators. Depth-related changes in density and viscosity in deep lakes with temperature stratification can also influence this feature.

Occurrence of Kellicottia bostoniensis (Rousselet, 1908) and Mesocyclops ogunnus Onabamiro, 1957 in lakes of the Middle River Doce, MG, Brazil

The presence of the two exotic zooplankton species (Kellicottia bostoniensis and Mesocyclops ogunnus) in lakes of the Middle River Doce is discussed in the present work. K. bostoniensis was registered in Lakes Jacaré, Carioca and Águas Claras while M. ogunnus was restricted to the littoral zone of Lake Dom Helvécio. These zooplankton species may have been introduced in these environments by human action. Despite the low densities registered for both species, the monitoring of the invasion process is necessary to evaluate possible impacts on the zooplankton community structure in the lakes of Middle River Doce.

Occurrence of Kellicottia bostoniensis (Rousselet, 1908) and Mesocyclops ogunnus Onabamiro, 1957 in lakes of the Middle River Doce, MG, Brazil

The presence of the two exotic zooplankton species (Kellicottia bostoniensis and Mesocyclops ogunnus) in lakes of the Middle River Doce is discussed in the present work. K. bostoniensis was registered in Lakes Jacare, Carioca and Aguas Claras while M. ogunnus was restricted to the littoral zone of Lake Dom Helvecio. These zooplankton species may have been introduced in these environments by human action. Despite the low densities registered for both species, the monitoring of the invasion process is necessary to evaluate possible impacts on the zooplankton community structure in the lakes of Middle River Doce.

Zooplankton of an urban stretch, Itapecerica river, Divinópolis, Minas Gerais, Brazil

The aim of this project was to study the zooplanktonic composition of the Itapecerica river in its 29km urban section across the city of Divinópolis, state of Minas Gerais. Eight sampling points were established within this section, six in lotic and two in lentic waters. Samples were taken monthly from March/2002 to February/2003 totalizing 84 samples. A plankton net with a mesh opening size of 35 μm was utilized for sampling. Temperature, pH, dissolved oxygen and electrical conductivity measurements were also taken during sampling. 101 taxa were registered, of which 35 were Protozoa, 52 Rotifera, 10 Cladocera and four Copepoda. The number of taxa was considered high when compared to similar studies. Among the richest group, rotifers, the most expressed genera were Lecane and Brachionus. This study recorded the first appearance of the exotic species Kellicottia bostoniensis (Rousselet 1908) for the sub-basin of Itapecerica river.

First record of the rotifer Kellicottia bostoniensis (Rousselet, 1908) in France

The first occurrence of the rotifer Kellicottia bostoniensis (Rousselet, 1908) in France is reported from the humic, acidic Lake Devesset (Ardéche).

Summer zooplankton dynamics in the limnetic and littoral zones of a humic acid lake

The limnetic and littoral zooplankton were studied during summer 1989 in Triangle Lake, a humic acid (pH 4.9) bog lake in Ohio, USA. The limnetic zooplankton showed low species richness and biomass, and dominance by the rotifers Kellicottia bostoniensis and Polyarthra vulgaris. In the littoral, species richness and biomass were markedly higher, and the crustaceans Alona guttata, Ceriodaphnia quadrangula, Chydorus sphaericus, Simocephalus serrulatus and Tropocyclops prasinus, and the rotifer Ascomorpha ecaudis were the dominants. The extreme rotifer dominance and lack of cladocerans in the limnetic zone were likely the result of Chaoborus predation. A pronounced mid-summer decline in cladoceran biomass in the littoral was likely due to predation by T. prasinus and Utricularia (bladderwort).

Chaoborus predation and zooplankton community structure in a rotifer-dominated lake

During summer, Chaoborus punctipennis larval densities in the water column of fishless, eutrophic Triangle Lake become very high, and coincidently, the spined loricate rotifer Kellicottia bostoniensis becomes the dominant zooplankter. Research was done to test the hypothesis that selective predation by Chaoborus on soft-bodied rotifers controls species dominance in the mid-summer zooplankton of this lake. In situ predation experiments showed positive selection by Chaoborus for the soft-bodied Synchaeta oblonga, negative selection for K. bostoniensis, and intermediate selection for Polyarthra vulgaris, a species with rapid escape tactics. However, during a 21 day in situ mesocosm experiment, zooplankton dominance and succession in Chaoborus-free enclosures was identical to that in enclosures with Chaoborus at lake density. Despite the selective predation, Chaoborus larvae may not exert significant top-down control on rotifers, whose intense reproductive output during mid-summer in temperate eutrophic lakes results in new individuals at rates that exceed predatory losses.

The effect of Daphnia interference on a natural rotifer and ciliate community: Short‐term bottle experiments

Two bottle experiments were conducted using water from a small, eutrophic lake to assess the impact of Daphnia interference (encounter) competition on the dynamics of the rotifer and ciliate populations dominating the zooplankton community. Indirect effects of Daphnia exploitative competition were minimized by adding food resources and using short incubation periods. The introduction of Daphnia pulex (16 liter−1) to Cryptomonas‐enriched (3–3.5 × 104 cells ml−1) water for 2 d significantly suppressed numbers of the ciliate Campanella sp.; the rotifers Kellicottia bostoniensis, Keratella cochlearis, Keratella crassa, Polyarthra vulgaris, and Synchaeta pectinata; and total rotifers. The presence of Daphnia did not affect numbers of the rotifers Asplanchna girodi, Polyarthra euryptera, and Trichocerca similis. Daphnia‐induced death rates of significantly suppressed, common species were highest for K. cochlearis (0.79–1.14 d−1), intermediate for S. pectinata and Campanella (0.23–0.33 d−1), and lowest for K. crassa and P. vulgaris (0.14–0.28 d−1). The most marked effects of Daphnia on community structure were 61–77% reductions in the relative abundance of K. cochlearis and up to 100% increases in the relative abundances of K. crassa and T. similis. The observed effects of Daphnia on the rotifer species are consistent with, and largely explicable by, previously conducted laboratory experiments and behavioral observations on interference between Daphnia and these or closely related species. Interference from Daphnia can rapidly reduce the abundance and shift the species structure of rotifer and ciliate assemblages in natural communities.

Plankton Ecology in Relation to Flushing Rate in Four Newfoundland Ponds

AbstractA seasonal quantitative study was conducted on the plankton of four Newfoundland ponds. There are indications that one pond received inputs of airborne pollutants emanating from a phosphorus plant. All ponds are characterized by high flushing rates. Highest numbers of both phytoplankton and zooplankton organisms tended to occur from late spring through summer, the period of greatest water retention. The phytoplankton was dominated for the most part by nano‐plankton forms. Large blooms of Anabaena flos‐aquae and Asterionella formosa occurred during summer in the pond located near the phosphorus plant. This did not occur in the other ponds. Dominant microcrustaceans encountered included Holopedium gibberum, Diaptomus minutus, and Epischura nordenskiöldi. Of the rotifers encountered, collectively the most important forms were Polyarthra dolichoptera, Conochilus unicornis, Keratella cochlearis, Kellicottia longispina, Kellicottia bostoniensis, Pleosoma truncatum, Synchaeta sp., and Trichocerca sp. Aspects of the ecology of the phytoplankton and zooplankton are discussed in the context of water retention characteristics. A comparison is made with a pond subject to pollution from rural and urban sources. This pond also possesses a high flushing rate.

Seasonal dynamics of rotifer and crustacean zooplankton populations in a eutrophic, monomictic lake with a note on rotifer sampling techniques

The abundances, biomass, and seasonal succession of rotifer and crustacean zooplankton were examined in a man-made, eutrophic lake, Lake Oglethorpe, over a 13 month period. There was an inverse correlation between the abundance of rotifers and crustaceans. Rotifers were most abundant and dominated (>69%) the rotifer-crustacean biomass during summer months (June–September) while crustacean zooplankton dominated during the remainder of the year (>89%). Peak biomasses of crustaceans were observed in the fall (151 µg dry wt l−1 in October) and spring (89.66 µg dry wt l−1 in May). Mean annual biomass levels were 46.99 µg dry wt l−1 for crustaceans and 19.26 µg dry wt l−1 for rotifers. Trichocerca rousseleti, Polyarthra sp., Keratella cochlearis and Kellicottia bostoniensis were the most abundant rotifers in the lake. Diaptomus siciloides and Daphnia parvula were the most abundant crustaceans. Lake Oglethorpe is distinct in having an unusually high abundance of rotifers (range 217–7980 l−1). These high densities can be attributed not only to the eutrophic conditions of the lake but also to the detailed sampling methods employed in this study.