scholarly journals Seasonal occurrence of metazoan parasites in Tigerfish, Hydrocynus vittatus Castelnau, 1861 (Characiformes: Alestidae) from Sanyati Basin, Lake Kariba, Zimbabwe

2019 ◽  
Vol 86 (1) ◽  
Author(s):  
Nyasha Mabika ◽  
Maxwell Barson ◽  
Cobus Van Dyk ◽  
Annemarie Avenant-Oldewage
Keyword(s):  
Random Distribution ◽  
Fish Host ◽  
Fish Parasites ◽  
Seasonal Occurrence ◽  
Seasonal Temperature ◽  
Parasite Diversity ◽  
Metazoan Parasites ◽  
Lake Kariba ◽  
Mean Intensity ◽  
Thermal Stability Of

Lake Kariba is a tropical lake with slight variations in seasonal temperature. Temperature is an important physical variable in the biology of both fish and their parasites. Currently, there is no information on the seasonal occurrence of fish parasites in Lake Kariba. The objective of this study was to investigate the seasonal occurrence of metazoan parasites in Hydrocynus vittatus in Lake Kariba, Zimbabwe. Twenty fish specimens were collected by seine netting per season between October 2014 and July 2015 in the Sanyati Basin, Lake Kariba, and examined for metazoan parasites. Mean water temperatures ranged from 24.1 °C to 31.2 °C with slight variations between the seasons. Metazoan parasites consisting of Monogenea (Annulotrema pikei, Annulotrema pseudonili, Annulotrema bracteatum), Nematoda (Contracaecum larvae), Copepoda (Lamproglena hemprichii), Cestoda (larval cestodes, Ichthybothrium sp.) and Pentastomida (pentastomid larvae) were recorded. Larval cestodes were recorded in autumn and spring, while pentastome larvae were recorded in summer and spring. The Ichthybothrium sp. was recorded once in winter. Annulotrema pikei and A. pseudonili were observed on the gills and A. bracteatum on both the gills and the skin. Contracaecum larvae, L. hemprichii and A. bracteatum (from the skin) were recorded in all the seasons, with slight variations in prevalence, mean abundance and mean intensity. However, these variations were not statistically significant (analysis of variance or ANOVA, p > 0.05). The slight variations in occurrence of the parasites were probably because of the thermal stability of the lake where variation in temperature was small between seasons. Both A. bracteatum and Contracaecum larvae were aggregated on the fish host, whereas L. hemprichii exhibited a random distribution. Parasite diversity was at its highest during winter.

scholarly journals Seasonal occurrence of some larval stages of endoparasites in three cyprinids from the Nwanedi-Luphephe dams, the Limpopo River System, South Africa

2015 ◽  
Vol 52 (3) ◽  
pp. 229-235 ◽  
Author(s):  
E. M. Mbokane ◽  
J. Theron ◽  
W. J. Luus-Powell
Keyword(s):  
Developmental Stages ◽  
River System ◽  
Intestinal Wall ◽  
The Body ◽  
Seasonal Occurrence ◽  
Seasonal Fluctuations ◽  
Metazoan Parasites ◽  
Larval Stages ◽  
Parasite Communities ◽  
Third Stage

Abstract This study provides information on seasonal occurrence of developmental stages of endoparasites infecting three cyprinids in the Nwanedi-Luphephe dams, Limpopo River System. Labeobarbus marequensis (Smith, 1841), Barbus trimaculatus Peters, 1852 and Barbus radiatus Peters, 1853 were investigated seasonally from January 2008 to October 2008. The following larvae of metazoan parasites were collected: Diplostomum sp. from the eyes of L. marequensis and B. trimaculatus; Ornithodiplostomum sp. from the gills of B. trimaculatus; Posthodiplostomum sp. from muscle, skin and fins of B. trimaculatus and B. radiatus; third-stage Contracaecum larvae (L3) from the mesentery fats and on the liver lobes of L. marequensis and B. trimaculatus and gryporynchid cestode larvae from the outer intestinal wall of B. radiatus. All the flukes encountered were metacercariae. Diplostomum sp. and Contracaecum sp. dominated the parasite communities. Their prevalence exhibited seasonal fluctuations with maxima in summer. Factors likely to influence fish infection such as the body size of fish and their condition factors were also briefly considered in this study.

scholarly journals Metazoan parasites of Mugil curema (Osteichthyes: Mugilidae) from the coastal Rio de Janeiro

2014 ◽  
Vol 9 (24) ◽  
pp. 67-75
Author(s):  
Dimitri Ramos Alves
Keyword(s):  
Species Richness ◽  
Negative Correlation ◽  
Rio De Janeiro ◽  
Dominant Species ◽  
Parasite Species ◽  
Brazilian Coast ◽  
Metazoan Parasites ◽  
Parasite Abundance ◽  
Mean Intensity ◽  
Parasite Species Richness

From May to August 2011, 55 specimens of white mullet Mugil curema Valenciennes, 1836 (Osteichthyes: Mugilidae) collected from coast of the State of Rio de Janeiro (21-23° S, 41-45° W), were necropsied to study their communities of metazoan parasites. Two species of metazoan parasites were collected: Floridosentis mugilis Machado, 1951 (Acantocephala: Neoechinorhynchidae) and Metamicrocotyla macracantha Alexander, 1954 (Monogenea: Microcotylidae). The majority of the fishes (n = 41; 74.5%) were parasitized by at least one metazoan species. Three hundred twenty-four specimens, with an average of 5.8 ± 7.6 per host, were collected. Floridosentis mugilis constituted the majority of specimens collected (n = 319), was the dominant species, with highest prevalence, abundance, intensity and mean intensity. The parasites species showed a typical over-dispersed pattern of distribution. The abundance of the species F. mugilis and total parasites collected showed negative correlation with host total length. The metazoan parasites community of M. curema showed dominance of endoparasites, no correlation between parasite abundance and the lack of relationship between the sex of host and parasite rates. Mugil curema showed low parasite species richness when compared with studies on the parasitic fauna of mugilids of the Brazilian coast.

scholarly journals Metacestodes of Glossocercus auritus (Cyclophyllidea, Gryporhynchidae) in Poecilia reticulata (Pisces, Poeciliidae) from Brazil

2011 ◽  
Vol 20 (2) ◽  
pp. 161-164 ◽  
Author(s):  
Hudson Alves Pinto ◽  
Alan Lane de Melo
Keyword(s):  
South America ◽  
Poecilia Reticulata ◽  
Natural Infection ◽  
Minas Gerais ◽  
Fish Parasites ◽  
Mean Intensity ◽  
First Report ◽  
Larval Stages ◽  
Belo Horizonte

Studies on fish parasites in Pampulha dam, Belo Horizonte, Minas Gerais, Brazil, found specimens of Poecilia reticulata Peters, 1859 harboring natural infection by larval stages of tapeworms. A total of 250 specimens of P. reticulata were collected and analyzed between February and August 2010, of which 23 were found infected (prevalence 9.2%) with one metacestode each (mean intensity 1, mean abundance 0.09). The analyses of the parasites, particularly the morphology of rostellar hooks, made it possible to identify Glossocercus auritus (Rudolphi, 1818). This is the first report of G. auritus metacestode in South America and P. reticulata is a newly known host for this parasite.

Seasonal occurrence, recruitment, and maturation of Allocreadium lobatum Wallin, 1909 (Digenea: Allocreadiidae) in the fallfish, Semotilus corporalis Mitchell, in a New Brunswick, Canada, lake system

1985 ◽  
Vol 63 (3) ◽  
pp. 612-616 ◽  
Author(s):  
Thomas G. Rand ◽  
Michael D. B. Burt
Keyword(s):  
New Brunswick ◽  
Annual Cycle ◽  
Parasite Population ◽  
Seasonal Occurrence ◽  
Intermediate Hosts ◽  
Temperature Changes ◽  
Mean Intensity ◽  
Host Diet ◽  
Low Prevalence ◽  
Semotilus Corporalis

The seasonal occurrence, recruitment, and maturation dynamics of Allocreadium lobatum (Digenea: Allocreadiidae) infecting the fallfish, Semotilus corporalis, from the Magaguadavic Lakes system, New Brunswick, Canada, were studied from May 1978 through July 1978 and from February 1979 through November 1980. Allocreadium lobatum has an annual cycle with both low mean intensity and low prevalence of infection occurring from July through September and increasing to high levels from November through May. Parasite recruitment, marked by the presence of a high percentage (≥ 58%) of immature and mature worms in fallfish, is greater from August through November but occurs intermittantly throughout the year. From February through July at least 60% of the parasite population is composed of gravid individuals which die after oviposition. The seasonality of parasite occurrence, recruitment, and maturation cycles is discussed in relation to temperature changes of the water, host diet, and trends in the occurrence of amphipods which are the second intermediate hosts of A. lobatum.

scholarly journals Prevalence Of Parasites In Freshwater Fishes In The Southern Part Of Ligawasan Marsh, Philippines

2021 ◽  
Vol 1 ◽  
pp. 93-102
Author(s):  
Sarip Tarita Ampatuan Ali
Keyword(s):  
Public Health ◽  
Oreochromis Niloticus ◽  
Freshwater Fishes ◽  
Fish Parasites ◽  
Anabas Testudineus ◽  
Mean Intensity ◽  
Representative Species ◽  
Clarias Macrocephalus ◽  
Microscopy Method ◽  
Channa Striata

Ligawasan Marsh, the largest river basin in Mindanao is home of common fishes such as dalag, pupuyo, hito, tilapia and gourami. Fish parasites pose a great threat to freshwater fishes to public health and economy of an area. This study aims to examine the Prevalence of Parasites in Freshwater Fishes in the Southern Part of Ligawasan Marsh; Endoparasites in the representative species; Mean intensity and abundance infection of the Endoparaites. The study utilized necropsy, dissection and microscopy method to examine Endoparasites. Trematodes Clinostomum sp, suspected Camallanus sp., a Neocamallanus sp. and a member of Order Spirurida, all nematodes were recovered. The study yielded that Fish parasites in Channa striata Anabas testudineus had prevalence in Kabuntalan and Datu Piang. Nine Acanthocephalan recovered in Oreochromis niloticus had also prevalence rate. Suspected trematode cysts and eggs were also recovered in Trichopodus trichopterus and Clarias macrocephalus. Thus, it is concluded that there is prevalence of nematodes and trematodes species in C. striata, A. testudineus, O. niloticus, C. macrocephalus and T. trichopterus The Camallanus sp and Neocamallanus sp, both common aquarium parasites are first found in the Southern part of Ligawasan Marsh.

scholarly journals Study on infestations and biodiversity of metazoan parasites in Channa punctatus (Bloch), Mymensingh region

2019 ◽  
Vol 17 (3) ◽  
pp. 409-416
Author(s):  
Naoshin Farzana ◽  
Jasmin Naher ◽  
Md Abu Zafar ◽  
Kirtunia Juran Chandra ◽  
Gias Uddin Ahmed
Keyword(s):  
The Other ◽  
Channa Punctatus ◽  
Digenetic Trematode ◽  
Female Fish ◽  
Exotic Fish ◽  
Male Fish ◽  
Metazoan Parasites ◽  
Mean Intensity ◽  
The Mean ◽  
Day By Day

An investigation was conducted on infestation and reviewed biodiversity of metazoan parasites in Channa punctatus of Mymensingh region from July 2013 to June 2014. A total of 235 fish were examined and 9 species of four groups of parasites were recorded. They were (i) Euclinostomum multicaecum Tubangui and Masilungan, 1935 (ii) Euclinostomum heterostomum (Rudolphi, 1809) (iii) Genarchopsis goppo Ozaki, 1925 (iv) Allocreadium handiai  Pandey, 1937 (v) Senga ophiocephalina (Tseng, 1933) (vi) Porrocaecum sp. (vii) Ascaridia sp. (viii) Contracaecum sp. (ix) Pallisentis ophiocephali (Thapar, 1930).The maximum (86.67%) prevalence was found in  (86.67%) October and minimum (35.00%) in December whereas the maximum mean intensity (10) was observed in June and the minimum (1.42) was recorded from December. The prevalence was observed higher (68.85%) in smaller size of fish and in case of larger fish the prevalence was lower and the value was (53.62%). On the other hand, the mean intensity (5.45) was higher in smaller fish and lower (3.39) in medium sized fish. Both prevalence and mean intensity was found maximum in female fish than male fish. Among the four groups of parasites, infestation of Digenetic trematode is much higher than Nematoda, Cestoda and Acanthocephala. During the study, a list of parasites reported from Channa punctatus of Indian sub-continent was prepared. It was found that 38 species of Digenea, 4 species of Cestoda, 26 species of Nematoda and 5 species Acanthocephala were recorded. The Biodiversity of parasites seemed to be declined day by day. The responsible factors for this declination may be environmental degradation, entry of exotic fish and modernization of aquaculture etc. J Bangladesh Agril Univ 17(3): 409–416, 2019

scholarly journals Study of haemoflagellates Trypanosoma sp. infection in some fish of Iraq marshes and relationship of leukocytes with inflammatory response

2021 ◽  
Vol 877 (1) ◽  
pp. 012011
Author(s):  
H M Jarallah
Keyword(s):  
Inflammatory Response ◽  
Inflammatory Cells ◽  
Infected Fish ◽  
Fish Parasites ◽  
Intensity Of Infection ◽  
Mean Intensity ◽  
Blood Smears ◽  
Liza Abu ◽  
South Of Iraq ◽  
Relationship Of

Abstract Fresh water fishes infected with different species of genus Trypanosoma parasite that is similar to that same genus in blood of mammals. Trypanosomiasis or sleeping sickness disease that causes by protozoa flagellate parasites which live inside cell called Trypanosoma. Fish parasites play an important role in regulating the population of their hosts. This study was implemented to verify the infection with Trypanosoma sp. report the cellular intervening through inflammatory response in blood smears of infected fishes. A total of 190 fishes of three species Carasobarbus luteus, Aspius vorax and Liza abu were collected from Al-Hamare and Al-Chibayish marsh south of Iraq. The flagellate parasite Trypanosoma sp. observed in blood of Carasobarbus luteus 41.42% and Aspius vorax 12.28% fishes, while no infection was recorded with Trypanosoma sp. in Liza abu fishes. Prevalence and mean intensity of infection were calculated. The different counts and various types of inflammatory cells were monitored, there are increased in lymphocytes in the infected fishes. Statistically, there are significant differences (p<0.05) among species of infected fish with Trypanosoma sp.

Metazoan parasites from herring (Clupea harengus L.) as biological indicators in the Baltic Sea

2014 ◽  
Vol 59 (3) ◽  
Author(s):  
Patrick Unger ◽  
Sven Klimpel ◽  
Thomas Lang ◽  
Harry Palm
Keyword(s):  
Species Richness ◽  
Baltic Sea ◽  
Parasite Species ◽  
Distribution Patterns ◽  
Biological Indicators ◽  
Clupea Harengus ◽  
Fish Parasites ◽  
The Baltic Sea ◽  
Metazoan Parasites ◽  
The Baltic

AbstractZoographical distribution of metazoan fish parasites in herring, Clupea harengus, from the Baltic Sea was analysed in order to use them as potential biological indicators. A total of 210 herring from six different sampling sites were investigated, harbouring 12 different parasite species [five digeneans (D), one cestode (C), three nematodes (N) and three acanthocephalans (A)]. The distribution of the parasite species differed according to region, with a distinct gradient of decreasing species richness towards the east of the Baltic Sea. The western localities at Kiel Bay, Rügen and Poland had the highest parasite diversity, including the marine parasite species Anisakis simplex (s.s.) (N), Brachyphallus crenatus and Hemiurus luehei (both D). The eastern localities had low parasite species richness, predominated by the freshwater digenean Diplostomum spathaceum. We could identify three different Baltic herring stocks, the spring-spawning herring of the western Baltic reaching from the Kattegat to the German and Polish coast, the stock of the central Baltic proper and the northern stock of C. harengus var. membras of the Gulf of Finland. The limited distribution of the herring parasites within the Baltic Sea enables their use as biological indicators for migration patterns and stock separation. The acanthocephalan Pomphorhynchus laevis that has already been used as an accumulation bioindicator for heavy metals was only recorded for the western herring stocks. However, the presence of mainly generalistic parasites and their uneven distribution patterns make their use as indicators for regional environmental and global change more difficult.

scholarly journals Biodiversity of the metazoan parasites of Prochilodus lineatus (Valenciennes, 1837) (Characiformes: Prochilodontidae) in anthropized environments from the Batalha River, São Paulo State, Brazil

2018 ◽  
Vol 18 (3) ◽  
Author(s):  
Lucas Aparecido Rosa Leite ◽  
Larissa Sbeghen Pelegrini ◽  
Beatriz Narciso Agostinho ◽  
Rodney Kozlowiski de Azevedo ◽  
Vanessa Doro Abdallah
Keyword(s):  
Ecosystem Health ◽  
Parasite Species ◽  
Structural Characteristics ◽  
Fish Parasites ◽  
Fish Farms ◽  
Metazoan Parasites ◽  
Prochilodus Lineatus ◽  
Parasitic Fauna ◽  
Environment Quality

Abstract: Biodiversity of fish parasites is a field of significant growth worldwide, whether due to the advancement of fish farms or the important role of these organisms as indicators of environment quality and ecosystem health, making them useful tools in the conservation and maintenance of the biodiversity as a whole. The objectives of this study were to evaluate the structure and composition of the parasitic fauna of Prochilodus lineatus collected from two structurally distinct stretches of the Batalha River. Fifty specimens of P. lineatus were collected between June 2015 and June 2016. Of these 50 hosts, 875 parasite specimens were collected, divided into 30 species, belonging to seven groups: Myxozoa, Monogenea, Digenea, Acanthocephala, Nematoda, Copepoda and Hirudinea. In addition to new records of known parasites of P. lineatus for this locality, 13 species were newly recorded parasitizing this fish, including a new monogenean species (Tereancistrum sp. n.), with Monogenea being the most representative class in the study. The findings of this study expands the known geographic distribution of these parasite species and helps to increase the knowledge of the biodiversity of these organisms in different hosts and environments. In general, the structure and composition of the P. lineatus parasitic fauna did not seem to be influenced by the structural characteristics of the two stretches studied, due to the migratory habits of the host.

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