The diversity of teleost fish trematodes in the Bay of Bizerte, Tunisia (Western Mediterranean)

Antar, R.; Gargouri, Lamia

doi:10.2478/helm-2018-0004

Cited by 6 publications

(9 citation statements)

References 47 publications

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“…Results from studies of helminth communities of fishes show that the richest enteric helminth assemblages are found in carnivorous fishes, whereas algal feeders, herbivores and detritivores showed species poor helminth communities 32 , 33 . The results presented in this study are in apparent deviation from our expectations, considering that helminth communities of white seabream in other Mediterranean areas are richest than that found here 33 – 35 . To explain this finding, we hypothesize that selective feeding on specific poorly infected food items in sampling areas may have led to the poor endo-parasites communities in the white seabream.…”

Section: Discussioncontrasting

confidence: 99%

Host biological factors and geographic locality influence predictors of parasite communities in sympatric sparid fishes off the southern Italian coast

Santoro¹,

Iaccarino

Bellisario

2020

Sci Rep

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Host biological factors and habitat influence the faunal assemblages and biodiversity worldwide, including parasite communities of vertebrate and invertebrate hosts. The ecological relationship between hosts and parasites can be mediated by interaction of host's biological factors, as their physiological condition, diet and size, with the environmental components, somehow influencing the features of parasite infection in host populations. Here, we used boosted regression tree models to study the parasite communities of two sympatric sparid fishes, the salema Sarpa salpa and the white seabream Diplodus sargus, to investigate the role of specific host's traits in two contiguous coastal areas along the southern-western Tyrrhenian coast of Italy characterized by different degree of deterioration. Results showed that overall and across all parasite groups (ecto-, endo-and ectoplus endo-parasites), sampling localities were the most important predictors of abundance, species richness, and diversity for salema. Moreover, seasonality was the main predictor of endo-parasite abundance, while size-related factors explained most of the variation in species richness and diversity. In the white seabream, size-related factors and reproductive cycle-related factors were the most important predictors for the overall parasite abundance and parasite richness, respectively. Our findings suggest that the parasite community of salema and white seabream responded differently to specific biological factors, highlighting how the environmental conditions under which they live may exert a strong influence on the parasite communities of each host fish.

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Section: Discussioncontrasting

confidence: 99%

Host biological factors and geographic locality influence predictors of parasite communities in sympatric sparid fishes off the southern Italian coast

Santoro¹,

Iaccarino

Bellisario

2020

Sci Rep

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“…In the experimental infections, the clam A. petitiana was never infected, but the polychaetes from Puerto Madryn were successfully infected. The prevalence of metacercariae in the experimentally infected Boccardia proboscidea was 84% (n = 20) and the mean intensity was 5.76 (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17), and in Platynereis sp. was 75% (n = 4) and the mean intensity was 8.33 (3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14).…”

Section: Host Spectrum and Experimental Infectionmentioning

confidence: 99%

“…The prevalence of metacercariae in the experimentally infected Boccardia proboscidea was 84% (n = 20) and the mean intensity was 5.76 (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17), and in Platynereis sp. was 75% (n = 4) and the mean intensity was 8.33 (3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14). Both overall prevalence (83.33% vs. 22.22%) and mean intensity (6.15 (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17) vs. 1.68 (1-3)) were significantly higher in experimentally than naturally infected polychaetes K. dorsalis (Z = À4.64, p < 0.05; Z = À7.48, p < 0.05).…”

Section: Host Spectrum and Experimental Infectionmentioning

confidence: 99%

“…was 75% (n = 4) and the mean intensity was 8.33 (3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14). Both overall prevalence (83.33% vs. 22.22%) and mean intensity (6.15 (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17) vs. 1.68 (1-3)) were significantly higher in experimentally than naturally infected polychaetes K. dorsalis (Z = À4.64, p < 0.05; Z = À7.48, p < 0.05). The measurements of metacercariae experimentally encysted in polychaetes are similar to those from natural infections: cyst 172 (159-190) diameter, wall 5 (3-9) thick, body 316 (228-379) long by 123 (86-159) wide, oral sucker 61 long by 66 wide, ventral sucker 83 (66-99) long by 91 (80-118) wide, and excretory vesicle 63 long by 58 wide.…”

Section: Host Spectrum and Experimental Infectionmentioning

confidence: 99%

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Cryptic speciation of the zoogonid digenean Diphterostomum flavum n. sp. demonstrated by morphological and molecular data

et al. 2020

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Diphterostomum brusinae (Zoogonidae) is a digenean species that has been recorded worldwide parasitizing marine fishes. Several species have been synonymized with D. brusinae because they lack conspicuous morphological differences. However, due to the breadth of its geographic distribution and the variety of hosts involved in the life cycles, it is likely to be an assemblage of cryptic species. Diphterostomum flavum n. sp. is described here as a morphologically cryptic relative of D. brusinae, in the fish Pinguipes brasilianus (Pinguipedidae) off the Patagonian coast, Southwestern Atlantic Ocean, and its life cycle is elucidated through morphology and molecular analysis. This species uses the gastropod Buccinanops deformis (Nassariidae) as first and second intermediate host with metacercariae encysting within sporocysts. They also, however, use the polychaete Kinbergonuphis dorsalis (Onuphidae) as second intermediate host. No morphological differences were found between adults of D. flavum n. sp. and D. brusinae; however, the number of penetration glands of the cercariae, a diagnostic feature, differed (9 vs. 3 pairs), as well as the ITS2 sequences for the two species. This work provides morphological and molecular evidence of cryptic diversification among species described as D. brusinae, in which the only clear differences are in larval morphology and host spectrum. The strict specificity to the snail acting as the first intermediate host and the variety of fishes with different feeding habits acting as definitive hosts support the likely existence of multiple cryptic species around the world.

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“…Trematodes, also known as flatworms or flukes, are a class of helminths which are further classified into monogeneans and digeneans. Their site of infection is the skin, fins and gills of the teleost that inhabit freshwater and brackish water (Antar and Gargouri 2018).…”

Section: Trematodesmentioning

confidence: 99%

Parasitic Diseases of Fish

Pike¹,

Lewis²

2021

Int J Vet Sci

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The diversity of teleost fish trematodes in the Bay of Bizerte, Tunisia (Western Mediterranean)

Cited by 6 publications

References 47 publications

Host biological factors and geographic locality influence predictors of parasite communities in sympatric sparid fishes off the southern Italian coast

Host biological factors and geographic locality influence predictors of parasite communities in sympatric sparid fishes off the southern Italian coast

Cryptic speciation of the zoogonid digenean Diphterostomum flavum n. sp. demonstrated by morphological and molecular data

Parasitic Diseases of Fish

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