scholarly journals The occurrence and dynamics of Ligula intestinalis in its cyprinid fish host, tench, Tinca tinca, in MoganLake (Ankara, Turkey)

2012 ◽  
Vol 50 (No. 12) ◽  
pp. 537-542
Author(s):  
Ergonul MB ◽  
A. Altindag
Keyword(s):  
Life Cycle ◽  
Fish Host ◽  
Cyprinid Fish ◽  
Fish Sample ◽  
Tinca Tinca ◽  
Mean Intensity ◽  
Ligula Intestinalis ◽  
The Mean ◽  
Tench Tinca Tinca ◽  
Fish Hosts

Although Ligula intestinalis (L., 1758) has been recorded in several fish hosts, available data on the parasitization parameters of Ligula intestinalis plerocercoids such as prevalence, mean intensity and parasitic index in tench (Tinca tinca L., 1758) is limited. In this study, totally 272 fishes were investigated for the presence of L. intestinalis plerocercoids. The prevalence value was 40.01% of the whole fish sample and the mean intensity was 2.48. The lower IP values and mean intensity levels may provide some evidence of the strategy of Ligula in order to complete its life cycle. None of the parasitization parameters showed significant differences between the sexes.

Studies on the life-cycle of Asymphylodora tincae Modeer, 1790) Trematoda: Monorchiidae) in a small lake near Amsterdam: Part 2: The relations between Asymphylodora tincae and its definitive host, Tinca tinca

1981 ◽  
Vol 55 (4) ◽  
pp. 239-246 ◽  
Author(s):  
M. A. Zietse ◽  
Elisabeth Van Den Broek ◽  
Elze E. A. Erwteman-Ooms
Keyword(s):  
Life Cycle ◽  
Definitive Host ◽  
Natural Infection ◽  
Early Spring ◽  
Summer Season ◽  
Tinca Tinca ◽  
Mean Intensity ◽  
The Mean ◽  
Infection Experiments

ABSTRACTThe natural infection of tench by Asymphylodora tincae in a lake was studied during one summer season. The incidence of infection was 57%, the mean intensity about 50. The distribution of the digencans along the host's intestine showed a maximum in the second half; this could be modified by the presence of other helminth species. Tench caught in early spring and kept in the laboratory retained their natural infection throughout the summer. Starvation of hosts during two months caused disappearance of the infection. Experiments showed that metaecrcariae, introduced into the intestine of tench, can excyst within one hour. In vitro, cysts in contact with tench bile opened within 15 seconds. Bile of several other cyprinid fisli species caused excystment within 60 seconds. Asymphylodora eggs appeared in tench faeces 7 to 10 days after infection. Progenetic specimens of A. tincae probably disintegrate in the intestine of the tench and their eggs arc passed out with the faeces.

Modeling spatial distribution of the unionid mussels and the core-satellite hypothesis

1998 ◽  
Vol 38 (7) ◽  
pp. 73-79 ◽  
Author(s):  
Hooi-Ling Lee ◽  
Donald DeAngelis ◽  
Hock-Lye Koh
Keyword(s):  
Spatial Distribution ◽  
Life Cycle ◽  
Success Rate ◽  
Distribution Patterns ◽  
Fish Host ◽  
Limited Movement ◽  
Unionid Mussels ◽  
Species Characteristics ◽  
Major Factors ◽  
Fish Hosts

This paper discusses the spatial distribution patterns of the various species of the Unionid mussels as functions of their respective life-cycle characteristics. Computer simulations identify two life-cycle characteristics as major factors governing the abundance of a species, namely the movement range of their fish hosts and the success rate of the parasitic larval glochidia in finding fish hosts. Core mussels species have fish hosts with large movement range to disperse the parasitic larval glochidia to achieve high levels of abundance. Species associated with fish host of limited movement range require high success rate of finding fish host to achieve at least an intermediate level of abundance. Species with low success rate of finding fish hosts coupled with fish hosts having limited movement range exhibit satellite species characteristics, namely rare in numbers and sparse in distributions.

scholarly journals Gill monogeneans of the chub mackerel, Scomber japonicus from Madeiran waters of the Atlantic Ocean, Portugal

2007 ◽  
Vol 81 (1) ◽  
pp. 33-38 ◽  
Author(s):  
G. Costa ◽  
N. Freitas ◽  
T.H. Dellinger ◽  
K. MacKenzie
Keyword(s):  
Atlantic Ocean ◽  
Fish Host ◽  
Scomber Japonicus ◽  
Chub Mackerel ◽  
Intensity Of Infection ◽  
Mean Intensity ◽  
Gill Filaments ◽  
Fish Hosts

AbstractFive species of monogeneans were recovered from the gill filaments of 181 chub mackerel, Scomber japonicus, from the Madeiran waters of the Atlantic Ocean, Portugal, during 2004/2005. The monogenean Pseudokuhnia minor showed the highest prevalence (98.68%) and a mean intensity of 28.23, followed by Kuhnia scombri (prevalence of 43.71% and mean intensity of 2.69) and K. scombercolias (prevalence of 39.1% and a mean intensity of 1.81). Kuhnia sprostonae and Grubea cochlear were rare, occurring in only one and five fish hosts respectively. No correlation between fish host length and mean intensity of infection with the three most abundant monogeneans was found. However, significant differences in prevalence and abundance were found in relation to date of sampling for P. minor, and all parasites were aggregated in their distribution.

Maintenance of the Life Cycle of Ligula intestinalis in the Laboratory

1969 ◽  
Vol 26 (8) ◽  
pp. 2250-2251 ◽  
Author(s):  
T. S. C. Orr ◽  
C. A. Hopkins
Keyword(s):  
Life Cycle ◽  
Bright Light ◽  
Cyprinid Fish ◽  
Ligula Intestinalis ◽  
Mesocyclops Leuckarti

Techniques for the maintenance of the life cycle of Ligula intestinalis in the laboratory are described. Fertile eggs were produced by adult cestodes 72 hr after ducklings were fed with infective plerocercoids. Eggs were extracted by sieving and washed by decanting prior to incubation in water for 10 days at 25 C. A bright light stimulated developed eggs to hatch, and the emergent coracidia were fed to the copepods Diaptomus fragilis and Mesocyclops leuckarti. Infective procercoids were present in the haemocoel of copepods after 10 days at 25 C. Plerocercoids developed in tropical cyprinid fish, e.g., Danio malabaricus, which were infected by exposure to infective copepods.

Ultrastructural studies on the cellular response of fish hosts following experimental infection with the plerocercoid of Ligula intestinalis (Cestoda: Pseudophyllidea)

Parasitology ◽  
1983 ◽  
Vol 87 (1) ◽  
pp. 139-149 ◽  
Author(s):  
D. Hoole ◽  
C. Arme
Keyword(s):  
Cellular Response ◽  
Cell Types ◽  
Cyprinid Fish ◽  
Host Tissue ◽  
Tissue Response ◽  
Host Proteins ◽  
Ligula Intestinalis ◽  
Ultrastructural Studies ◽  
Fish Hosts ◽  
L1 And L2

SUMMARYWith the exception of gudgeon (Gobio gobio) infection of cyprinid fish with the plerocercoid of Ligula intestinalis is associated with a host-tissue response. The nature and specificity of this response has been investigated using transplantation techniques. In roach there is an intense cellular response to implanted Sepharose, Spurr's resin and L. intestinalis, irrespective of donor host species. However, tegument damage only occurs in gudgeon-Ligula and cultured ro&ch-Ligula which has been exposed to gudgeon-plasma. L1 and L2 cell types predominate within the cellular response. Once the host leucocytes have breached the tegument, they migrate over the basal lamina and penetrate into the sub-tegumental region. In gudgeon an intense cellular attack occurs against Sepharose, Spurr's resin, ro&ch-Ligula and cultured gudgeon-Ligula which had been implanted directly or exposed to roach plasma. Tegument damage only occurs in the latter. In contrast, neither direct implantation of gudgeon-Ligula nor cultured roach-Ligula which has been exposed to gudgeon plasma evokes a cellular response. It is suggested that in these two instances, as in natural infections of gudgeon, protective host proteins may be absorbed onto the surface of the parasite.

Ecology of Proteocephalus torulosus in the blue bream (Abramis ballerus) from the Oder River on the borders of Germany and Poland

1998 ◽  
Vol 72 (3) ◽  
pp. 231-236 ◽  
Author(s):  
M. Pietrock ◽  
R. Krüger ◽  
T. Meinelt
Keyword(s):  
Particulate Matter ◽  
Suspended Particulate Matter ◽  
Infected Fish ◽  
Fish Host ◽  
Intensity Of Infection ◽  
Mean Intensity ◽  
Suspended Particulate ◽  
The Mean ◽  
Oder River ◽  
High Level

AbstractDuring studies on the ecology of fish helminths, the tapeworm Proteocephalus torulosus (Batsch, 1786) was frequently found in the intestine of the blue bream (Abramis ballerus) from the Oder River (Germany/Poland). In total, 633 fish, ranging between two and 16 years old, were sampled at monthly intervals over a two year period during 1993–1995. Statistically significant differences in the seasonal occurrence of the parasite in its fish host were observed. In 1993, the prevalence remained at a high level, ranging between 61.9 and 100%. During the summer of 1994, this value decreased to 5.5% and remained low for the rest of the year. The pattern of mean intensity of infection was similar to that of the prevalence. In 1993, the mean intensity varied between 8.4 and 31.8 worms per infected fish, with a continual loss of worms being observed in the summer of 1994. Changes in the amount of suspended particulate matter in water have been identified as the main cause of these observed differences in the course of infection of blue bream.

scholarly journals PROTOZOAN PARASITES IN COMMON CARP (CYPRINUS CARPIO, L. 1758) FROM CYPRINID AQUACULTURE FACILITY IN PELAGONIA REGION (BITOLA, MACEDONIA)

2019 ◽  
Vol 31 (3) ◽  
pp. 675-680
Author(s):  
Dijana Blazhekovikj - Dimovska
Keyword(s):  
Common Carp ◽  
Cyprinus Carpio ◽  
Cyprinid Fish ◽  
Fish Farm ◽  
Protozoan Parasites ◽  
Mean Intensity ◽  
Common Carp Cyprinus Carpio ◽  
Carp Cyprinus Carpio ◽  
The Mean

The aim of this study was to determine the protozoan parasites in common carp (Cyprinus carpio, L. 1758) from the largest cyprinid aquaculture facility in Macedonia, located in Pelagonia region (Bitola). This study was carried out by seasons, in a period of three years. A total of 212 specimens of common carp were examined and 134 fish (63.20%) were infected with protozoan parasites. Representatives of Protozoa were most commonly occurred during the spring (in 58.27 % of the fish examined), than in winter (55.21 %), summer (39.07 %) and the lowest in autumn (35.64 %).In common carp from this cyprinid fish farm the presence of 4 protozoa species was established: Myxobolus müelleri, Myxobolus encephalicus, Thelohanellus nikolskii and Trichodina sp. The mean intensity with protozoan parasites in common carp was 3.60, while the prevalence 10.20 %.

Morphometric correlates of host specificity in Dactylogyrus species (Monogenea) parasites of European Cyprinid fish

Parasitology ◽  
2001 ◽  
Vol 123 (2) ◽  
pp. 169-177 ◽  
Author(s):  
A. SIMKOVÁ ◽  
Y. DESDEVISES ◽  
M. GELNAR ◽  
S. MORAND
Keyword(s):  
Life Cycle ◽  
Cyprinid Fish ◽  
Independent Contrasts ◽  
Morphometric Measurements ◽  
Phylogenetic Information ◽  
Parasite Communities ◽  
Dactylogyrus Species ◽  
Fish Hosts ◽  
Attachment Organ ◽  
Direct Life Cycle

We test the hypothesis that living on larger fish may impose constraints, i.e. the need to develop large attachment organs, related to the necessity to remain attached on large gills. For this, we compiled data on body size and morphometric measurements of attachment organs of 44 Dactylogyrus species (ectoparasites with direct life-cycle) from 19 cyprinid species. Nineteen dactylogyrid species were considered as specialists (infecting only 1 host species) and 25 as generalists (infecting more than 1 species). The lack of phylogenetic information lead us to perform comparative analyses using raw values and independent contrasts obtained by random phylogenies. Our results show that rich parasite communities are formed by specialists and generalists whereas poor communities are composed mainly of generalist parasites. Moreover, specialists are found on larger hosts, which may reflect a specialization on a predictable resource, as larger fish live longer and offer large gills for parasite colonization. Parasite specialization is shown to be linked with adaptation of attachment organs to their fish hosts. Two morphometric variables of the attachment organ, the total length of anchor and length of base of anchor, were positively correlated with host length for specialists.

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