Infection of Mytilus Galloprovincialis By the Trematode Parvatrema Sp. (Digenea: Gymnophallidae) in the Middle Adriatic Sea, Croatia

Puljas, Sanja; Burazin, Jelena

doi:10.1007/s41208-022-00415-7

Cited by 4 publications

(6 citation statements)

References 24 publications

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“… Data from the present study and Puljas and Burazin ( 2022 ) are presented as range (mean ± s.d. ), data from Stunkard and Uzmann ( 1958 ) are presented as range, data from Marchiori et al .…”

Section: Resultsmentioning

confidence: 93%

“…( 2022 ), it seems clear that the importance of parasitological studies for the health status assessment of mussels is critical. Co-occurrence of pearl formation and Gymnophalidae infection has been recently observed in Mediterranean mussels (Puljas and Burazin, 2022 ; Marchiori et al ., 2023 ). Furthermore, when comparing the morphometric and anatomical characteristics with the cited Mediterranean studies, it is clear that the metacercariae infecting Mediterranean mussels and Northern Atlantic mussels (the ones in the present study) belong to different species.…”

Section: Discussionmentioning

confidence: 90%

“…This decrease might indicate an underestimation of parasite prevalence and infection intensity when using only histological techniques. The results of the present study together with the histopathological analysis performed in previous studies (Benito et al ., 2022 ), and the negative effects described in Mediterranean mussel populations caused by Gymnophallid trematodes (Puljas and Burazin, 2022 ) make this family a subject of great parasitological interest.…”

Section: Discussionmentioning

confidence: 99%

“…The high concentrations of both predators and prey, which act as hosts at different life stages and are common in the intertidal and upper subtidal zones, are conducive to the occurrence of parasites with complex life cycles (Galaktionov et al ., 2015 ). Among trematode parasites infecting bivalves, those in the Digenea subclass are the most common, including members of the Gymnophallidae (Cremonte et al ., 2015 ; Magalhães et al ., 2020 ; Puljas and Burazin, 2022 ; Marchiori et al ., 2023 ). The final host of Gymnophallidae parasites are coastal birds, mostly charadriforms and anseriform species.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Molecular confirmation of pearl formation in arctic mussels (Mytilus edulis) caused by Gymnophallus bursicola (Odhner 1900) metacercariae

Benito,

Izagirre,

Lekube

et al. 2023

Parasitology

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In recent field studies, suspected gymnophallid metacercariae were histologically located in the mantle of mussels from the Norwegian Sea. Mussels from the sites in which that infection was detected also presented abnormally high pearl numbers. It has been previously described that gymnophallid metacercariae could cause pearl formation processes in mussels, as a host reaction to encapsulate these metacercariae. Given the pathological host reaction these parasites elicit, a study was performed to identify gymnophallid metacercariae found in mussels collected from Tromsø at morphological and molecular level and to assess, by the use of molecular tools, the relationship between the parasite and the biological material inside the pearls. As a result, Gymnophallus bursicola metacercariae infecting Norwegian Mytilus edulis were identified according to morphological characters, along with the first 18S rDNA and COI sequences for this trematode species. In addition, parasite DNA from the core of the pearls was extracted and amplified for the first time, confirming the parasitological origin of these pearls. This procedure could allow identifying different parasitic organisms responsible for the generation of pearls in bivalves.

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Section: Resultsmentioning

confidence: 93%

Section: Discussionmentioning

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Molecular confirmation of pearl formation in arctic mussels (Mytilus edulis) caused by Gymnophallus bursicola (Odhner 1900) metacercariae

Benito,

Izagirre,

Lekube

et al. 2023

Parasitology

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show abstract

“…Understanding the adaptive mechanisms underlying the provision of a large number of eggs is important from the point of view of applied and fundamental aspects of the problem (Dkhil et al, 2015). The anatomical connection of Mehlis` gland and vitelline cells with the proximal parts of the female reproductive system of trematodes suggests that they are involved in the formation of eggshells (Puljas and Burazin, 2022). Despite numerous studies, the process of formation and stabilization of the shell has not been fully elucidated.…”

Section: Introductionmentioning

confidence: 99%

Functional Role of Vitelline Glands and Mehlis Gland in the Process of Resistant Egg Shell Formation in Trematodes

Ualiyeva¹

2023

OnLine Journal of Biological Sciences

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The study of the functional morphology of the reproductive system of trematodes, as well as its individual parts, provides an opportunity to solve an important problem that plays a huge role in theoretical and practical terms as the directed regulation of the fecundity of endoparasites. The article is devoted to the study of the functional role of vitelline glands and Mehlis glands in the process of formation of resistant egg shells on the example of the Parastrigea robusta trematode. The functional mechanisms are revealed on the basis of histomorphological and ultrastructural studies, underlying the provision of trematode eggshell formation processes and the role of each of the mentioned departments. The sequence of appearance and maturation of shell material in the vitelline follicles during vitellogenesis has been determined. The role of the Mehlis gland is substantiated on the basis of electron microscopy methods and their functional morphological analysis of ultrastructural and micromorphological data. The obtained data reveals information on the structural and functional unity of the mechanisms underlying the formation of a resistant trematode eggshell, the role of vitelline glands, and Mehlis gland in providing a "large number of eggs". According to the results of histological and electron microscopic studies of vitelline glands and Mehlis gland of the Parastrigea robusta trematode, a general scheme of the formation of trematode eggshell was formed. As a result, the obtained knowledge on the peculiarities of the structure and maturation of the vitelline glands and Mehlis gland of Parastrigea robusta will significantly complement the knowledge on the structural features of the female reproductive system of trematodes and the fertility of endoparasites. The results of the work can be used for further research in the selection of anthelmintic agents that affect vitelline glands and Mehlis glands, which will lead to directed regulation of the fertility level of endoparasites.

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Parvatrema spp. (Digenea, Gymnophallidae) with parthenogenetic metacercariae: diversity, distribution and host specificity in the palaearctic

Galaktionov,

Gonchar,

Postanogova

et al. 2024

International Journal for Parasitology

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Infection of Mytilus Galloprovincialis By the Trematode Parvatrema Sp. (Digenea: Gymnophallidae) in the Middle Adriatic Sea, Croatia

Cited by 4 publications

References 24 publications

Molecular confirmation of pearl formation in arctic mussels (Mytilus edulis) caused by Gymnophallus bursicola (Odhner 1900) metacercariae

Molecular confirmation of pearl formation in arctic mussels (Mytilus edulis) caused by Gymnophallus bursicola (Odhner 1900) metacercariae

Functional Role of Vitelline Glands and Mehlis Gland in the Process of Resistant Egg Shell Formation in Trematodes

Parvatrema spp. (Digenea, Gymnophallidae) with parthenogenetic metacercariae: diversity, distribution and host specificity in the palaearctic

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