scholarly journals Distribution of larval anisakids in blue whiting off Portuguese fish market

2007 ◽  
Vol 44 (1) ◽  
pp. 21-24 ◽  
Author(s):  
C. Cruz ◽  
C. Barbosa ◽  
A. Saraiva
Keyword(s):  
Body Length ◽  
Body Cavity ◽  
Mean Intensity ◽  
Blue Whiting ◽  
Host Body ◽  
Fish Market

AbstractSpecimens of Micromesistius poutassou (n=238) obtained in a fish market of Oporto, Portugal, were examined for the presence of larval anisakids. Anisakis sp. L3 larvae (prevalence = 77.7 %; mean intensity = 5.8; mean abundance = 4.5) and Hysterothylacium sp. L3 larvae (prevalence = 5 %; mean intensity = 4.1; mean abundance = 0.2) were found in body cavity, mesenteries, liver and muscles. The Anisakis sp. intensity and abundance were significantly related to the host body length. The percentage of Anisakis sp. in muscle was inversely related to the host length.

Abundance of chewing lice (Phthiraptera: Amblycera and Ischnocera) increases with the body size of their host woodpeckers and sapsuckers (Aves: Piciformes: Picidae)

2017 ◽  
Vol 149 (4) ◽  
pp. 473-481 ◽  
Author(s):  
Terry D. Galloway ◽  
Robert J. Lamb
Keyword(s):  
Body Size ◽  
Body Mass ◽  
Host Species ◽  
The Body ◽  
Louse Infestation ◽  
Mean Intensity ◽  
Chewing Lice ◽  
Host Body ◽  
Northern Flicker ◽  
Host Body Mass

AbstractSpecimens of five species of woodpeckers (Piciformes: Picidae) from Manitoba, Canada, were weighed and examined for chewing lice, 1998–2015: downy woodpecker (Picoides pubescens (Linnaeus), n=49), hairy woodpecker (Picoides villosus (Linnaeus), n=23), pileated woodpecker (Dryocopus pileatus (Linnaeus), n=10), northern flicker (Colaptes auratus (Linnaeus), n=170), and yellow-bellied sapsucker (Sphyrapicus varius (Linnaeus), n=239). The relationship between body mass of each host species and infestation by seven species of lice was analysed: Menacanthus pici (Denny) from all host species, Brueelia straminea (Denny) from Picoides Lacépède species, Penenirmus jungens (Kellogg) from northern flicker, Penenirmus auritus (Scopoli) from the other four hosts, Picicola porisma Dalgleish from northern flicker, Picicola snodgrassi (Kellogg) from Picoides species, and Picicola marginatulus (Harrison) from pileated woodpeckers. Mean abundance of lice increased with the mean mass of their host. Neither the species richness of lice nor the prevalence of lice were related to host body mass. Host body mass explained 98% of the variation in mean intensity of louse infestation among hosts. The positive association of mean intensity and body size was also detected for three genera of lice. Louse intensity also increased with body size for individual birds, more so for some species of lice and hosts than others. Body size matters, but the adaptations that allow higher mean intensity on larger host species remain to be determined.

scholarly journals Parasite fauna of Lutjanus synagris commercialized in the fish market from Bragança-PA, Brazil

2020 ◽  
Vol 1 (3) ◽  
Author(s):  
Natalino da Costa Sousa ◽  
Daiana Silva Dos Santos ◽  
Silmara Rosa Silva ◽  
Alexandre Vaz Da Silva ◽  
Jucimauro de Araújo P. Junior ◽  
...  
Keyword(s):  
Public Health ◽  
Marine Fish ◽  
Parasite Fauna ◽  
Mean Intensity ◽  
Taxonomic Level ◽  
Relative Dominance ◽  
Fish Market ◽  
Total Prevalence ◽  
Low Diversity ◽  
Zoonotic Parasites

Studies about the parasite fauna of marine fish highlights as an important problem for public health with zoonotic parasites or affecting the fish quality. Thus, this study evaluated the parasite fauna of Lutjanus synagris commercialized in the fish market from Bragança-PA. In laboratory, 58 fish were measured, weighted and conducted to parasitological analysis to determine parasitological indexes and relative dominance. Every parasite was fixed and identified until to the lowest taxonomic level. Through the parasitological analysis, it found Cymothoidae, Digenea, Cucullanus sp. and Procamallanus (Spirocamallanus) sp., with total prevalence 67.24%. Digenea showed the highest prevalence and mean intensity values. For nematode, Cucullanus sp. obtained the greater prevalence and relative dominance, while Procamallanus (Spirocamallanus) sp. showed the greater mean intensity and abundance. Cymothoidae showed the lowest prevalence and mean intensity values. As conclusion, the parasite fauna of L. synagris has been noted with low diversity, reporting the nematode occurrence Procamallanus (Spirocamallanus).

The distribution of plerocercoids of Diphyllobothrium dendriticum (Nitzsch) in sockeye salmon (Oncorhynchus nerka) smolts from Great Central Lake, British Columbia

1988 ◽  
Vol 66 (4) ◽  
pp. 850-852 ◽  
Author(s):  
Hilda Lei Ching
Keyword(s):  
British Columbia ◽  
Body Length ◽  
Sockeye Salmon ◽  
Oncorhynchus Nerka ◽  
Vancouver Island ◽  
Infected Fish ◽  
Mean Intensity ◽  
Diphyllobothrium Dendriticum ◽  
Pyloric Ceca

Sockeye salmon (Oncorhynchus nerka) from Great Central Lake, Vancouver Island, British Columbia, were sampled in May of 1986 and 1987 to study the locations and sizes of plerocercoids of Diphyllobothrium dendriticum. In 1986, 93% of 59 smolts were infected with a total of 222 plerocercoids (mean intensity ± SE, 4.0 ± 3.4; range, 1–15). In 1987, 77% of 168 smolts were infected with a total of 341 plerocercoids (mean ± SE, 2.6 ± 1.8; range, 1–9). More than 75% of the infected fish contained one to three plerocercoids, which were more often found free in the musculature than encysted in the viscera. Plerocercoids occurred most frequently in the midepaxial and midhypaxial musculature and encysted on the stomach and pyloric ceca. Plerocercoids varied in body length: those from the stomach area were <2 mm, and those in the viscera and musculature were 3–10 mm (a few from the musculature were >10 mm).

scholarly journals Seasonal population dynamics of the monogeneans Quadriacanthus kobinensis parasitising Clarias fuscus in Pearl River, China

2016 ◽  
Vol 53 (1) ◽  
pp. 105-108
Author(s):  
J. J. Hu ◽  
H. Y. Li
Keyword(s):  
Population Dynamics ◽  
Body Length ◽  
Infection Intensity ◽  
Field Investigation ◽  
Pearl River ◽  
Mean Intensity ◽  
Maximum Abundance ◽  
Clarias Fuscus ◽  
Seasonal Population ◽  
Seasonal Population Dynamics

SummaryThis paper describes the population dynamics of Quadriacanthus kobinensis on the gills of Clarias fuscus following a field investigation from June 2012 to May 2013 in Pearl River, China. The results showed that in Q. kobinensis prevalence was highest (70.13 %) in the summer and Mean intensity reached a peak in the autumn. The maximum number of Q. kobinensis in a fish was 474. The maximum abundance occurred during summer (25.8) and the minimum values during spring. Q. Kobinensis exhibited an aggregated distribution in all seasons. The highest prevalence was in hosts of 28 cm<L and the infection intensity was also the highest in this group. In terms of infection intensity, host of 28 cm<L differed significantly from those of 24<L≤26 cm, but no significant differences existed in other body length groups.

scholarly journals Parasitic Burden and Pathologic Effects of Anisakis Sp. (Nematoda : Anisakinae, Anisakidae) and Contracaecum Sp. Larvae (Nematoda : Anisakinae, Anisakidae) on Mugilids from Senegalese Estuaries

2014 ◽  
Vol 5 (2) ◽  
pp. 10
Author(s):  
Ephigénie Ndew DIONE ◽  
Malick DIOUF ◽  
Alassane SARR ◽  
Jean FALL ◽  
Cheikh Tidiane BÂ
Keyword(s):  
Immune Response ◽  
Larval Settlement ◽  
Body Cavity ◽  
Economic Importance ◽  
Fibrous Capsule ◽  
Mean Intensity ◽  
Target Organs ◽  
Parasitic Burden ◽  
Over Time

Consumption of mugilids is widespread in Senegal, especially in the estuaries, where there production is of economic importance. The prevalence, mean intensity and pathologic effects of Anisakis sp. and Contracaecum sp. larvae which infected mugilids from Senegalese estuaries were investigated. In 2009, individuals of mugilids belonging to 6 and 5 species were trapped from the estuaries of Saloum, Senegal and Casamance rivers respectively. The prevalence and mean intensity of Anisakis sp. and Contracaecum sp. are higher in Senegal and Saloum estuaries respectively. The increase in the load of Contracaecum sp., related to the season in L. falcipinnis, the season, the size, the weight and/or the sex in M. cephalus from the estuaries of Saloum and Senegal and M. curema from Saloum estuary were due to an accumulation of parasites over time. Liver, kidney, body cavity and mesentery and ovaries are the respective sites of infection of Anisakis sp. and Contracaecum sp. larvae. The immune response observed is the formation of a fibrous capsule surrounding the parasites with melanin granules all around the capsule. The implementation of the capsule and the presence of melanin granules suggest the involvement of lymphocytes, monocytes, neutrophils and macrophages. The lesions caused by Anisakis sp. and Contracaecum sp. larval settlement in target organs may cause the death of the host and/or a reduction in fertility.

Host body size and the abundance of chewing lice (Phthiraptera: Amblycera, Ischnocera) infesting eight owl species (Aves: Strigiformes) in Manitoba, Canada

2019 ◽  
Vol 151 (5) ◽  
pp. 621-628 ◽  
Author(s):  
Robert J. Lamb ◽  
Terry D. Galloway
Keyword(s):  
Body Size ◽  
Body Mass ◽  
Louse Infestation ◽  
Mean Intensity ◽  
Chewing Lice ◽  
Host Body ◽  
Abundant Genus ◽  
Louse Species ◽  
The Relationship ◽  
Host Body Mass

AbstractSpecimens (n = 508) of eight species of owl (Aves: Strigiformes) collected from 1994 to 2017 in Manitoba, Canada, were weighed and examined for chewing lice (Phthiraptera: Amblycera, Ischnocera). The relationship between host body mass and infestation by 12 species of lice was examined. Host body mass explained 52% (P = 0.03) of the variation in mean intensity of louse infestation among hosts, due primarily to a high abundance of lice on the heaviest owl species. The relationship was due to the mean intensity of lice, and neither species richness nor the prevalence of lice was related to host body mass. For individual louse species, the relationship was due primarily to Kurodaia acadicae Price and Beer, Kurodaia magna Emerson, and an undetermined species of Kurodaia Uchida (Phthiraptera: Menoponidae) (R2 = 0.997), but not the nine Strigiphilus Mjöberg (Phthiraptera: Philopteridae) species (R2 = 0.27). Louse intensity did not increase with body size for individual birds of any of the owl species. Mean intensity is expected to increase in proportion with the size, specifically the surface area, of the host. Why that relationship holds only for one louse genus, and not for the most abundant genus of lice on owls, and weakly compared with other families of birds, has yet to be determined.

scholarly journals Presence of Anisakis nematode larvae in Indian mackerel (Rastrelliger spp.) along the Indian Ocean southern coast of East Java, Indonesia

2018 ◽  
Vol 20 (1) ◽  
pp. 313-319
Author(s):  
EKO SETYOBUDI ◽  
IZANATUR ROHMAH ◽  
RIZKA FAUZIANA SYARIFAH ◽  
LISA RAMATIA ◽  
MURWANTOKO MURWANTOKO ◽  
...  
Keyword(s):  
Indian Ocean ◽  
Digestive Tract ◽  
Marine Mammals ◽  
Body Cavity ◽  
Final Host ◽  
Southern Coast ◽  
Mean Intensity ◽  
Indian Mackerel ◽  
Nematode Larvae ◽  
The Indian Ocean

Setyobudi E, Rohmah I, Syarifah RF, Ramatia L, Murwantoko, Sari DWK. 2019. Presence of Anisakis nematode larvae in Indian mackerel (Rastrelliger spp.) along the Indian Ocean southern coast of East Java, Indonesia. Biodiversitas 20: 313-319. In this study, we aimed to determine the prevalence (P), mean intensity (MI) and site of infection of anisakid larvae (Nematoda) in Indian mackerel (Rastrelliger spp.) at the Indian Ocean Southern Coast of East Java. A total of 341 fish were collected from Prigi and Muncar Fish Harbor, East Java during March-April 2018. Each fish specimen was measured in body length and weight, and then dissected for examination of Anisakis larvae in the body cavity, digestive tract, liver, gonad and muscle. The collected larvae were preserved in absolute ethanol for both morphological and molecular identification. The results of this research showed Indian mackerel was susceptible to Anisakis infection (P=17%, MI =6.8 larva/individual fish). Most of the larvae were found in the digestive tract and body cavity, 47.2% and 46.0% respectively. Only a few larvae were found in other internal organs and muscle. Based on morphological identification, these larvae corresponded to Anisakis Type I. Furthermore, in molecular identification using PCR-RFLP, the banding pattern clearly matched with Anisakis typica. The prevalence and mean intensity of Anisakis nematodes on Indian mackerel along the southern coast of East Java seem to be different in each locality and from other adjacent waters as has previously been reported, which may be due to differences in feeding habits and in the distribution of marine mammals as the final host. The results suggest that differences in prevalence and mean intensity of anisakis larvae infection could be developed as a biological indicator of fish stock discrimination. However, clear information regarding food habits of Indian mackerel and migration patterns of the paratenic hosts as well as of marine mammals as final host is needed.

Infection levels of proteocephalidean cestodes inCichla piquiti(Osteichthyes: Cichlidae) of the Volta Grande Reservoir, Minas Gerais, Brazil, relative to host body weight and gender

2011 ◽  
Vol 85 (4) ◽  
pp. 462-467 ◽  
Author(s):  
M.L. Martins ◽  
J. Pereira ◽  
A. de Chambrier ◽  
J.L.P. Mouriño
Keyword(s):  
Body Weight ◽  
Minas Gerais ◽  
Intermediate Hosts ◽  
Intensity Of Infection ◽  
Mean Intensity ◽  
Host Body ◽  
Significant Difference ◽  
Males And Females ◽  
And Gender ◽  
The Relationship

AbstractWe evaluated the relationship between infection by proteocephalid cestodes and the sex and weight classes of tucunaré (Cichla piquiti) captured between August 1999 and June 2001 in the Volta Grande Reservoir, Minas Gerais, Brazil. A total of 96 fish, 75.9 ± 9.3% males and 88.9 ± 6.4% females, were parasitized byProteocephalus macrophallusandP. microscopicus, with total mean intensities of 76.6 ± 23.9 and 145.2 ± 36.7, respectively, during this period. In the majority of the months analysed, males showed 71.4–100% prevalence of parasitism and females 80–100%. Although there was no significant difference, females showed a higher mean intensity of infection (145.2 ± 36.7) than males (76.6 ± 23.9). Fish weighing 300–800 g showed a higher mean abundance of parasites (P < 0.05) compared with the biggest specimens weighing 801–2750 g. Analysing both males and females together, the greatest mean intensities of infection were found in October and December (P < 0.05) independent of the year, which coincides with the months of highest rainfall. These results show that fish living in reservoirs may be more susceptible to intermediate hosts than those that live in rivers.

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