First report of some parasites from Mediterranean mussel, Mytilus galloprovincialis Lamarck, 1819, collected from the Black Sea coast at Sinop

Özer, Ahmet; Güneydağ, Sevilay

doi:10.3906/zoo-1401-2

Cited by 13 publications

(18 citation statements)

References 19 publications

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“…All locations differ from each other with respect to their ecologically properties; İskele region is a polluted area due to human activities at the inner harbor, Adabaşı region is the most natural and unpolluted area and the last region Sarıada is a site under the effect of both human activities and seasonal fresh water flowing which lowers the salinity level of the water. Details about the collection of mussels and laboratorial processes of parasite identification can be found in [17]. Temperature, Salt, Phosphate-PO4 and Nitrate-NO3 measurements were included to the models as biotic factors; and Sex, Condition Index-CI (i.e.…”

Section: Datamentioning

confidence: 99%

Kesikli Regresyon Modellerinin Kullanımıyla Midye Parazit Sayılarındaki Sıfır Yoğunluğunun Açıklanması

Çankaya¹,

Alpay²,

Özer³

2017

SAÜ Fen Bilimleri Enstitüsü Dergisi

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In many ecological applications, the absences of species are inevitable due to either detection faults in samples or uninhabitable conditions for their existence, resulting in high number of zero counts or abundance. Usual practice for modelling such data is regression modelling of log(abundance+1) and it is well know that resulting model is inadequate for prediction purposes. New discrete models accounting for zero abundances, namely zero-inflated regression (ZIP and ZINB), Hurdle-Poisson (HP) and Hurdle-Negative Binomial (HNB) amongst others are widely preferred to the classical regression models. Due to the fact that mussels are one of the economically most important aquatic products of Turkey, the purpose of this study is therefore to examine the performances of these four models in determination of the significant biotic and abiotic factors on the occurrences of Nematopsis legeri parasite harming the existence of Mediterranean mussels (Mytilus galloprovincialis L.). The data collected from the three coastal regions of Sinop city in Turkey showed more than 50% of parasite counts on the average are zero-valued and model comparisons were based on information criterion. The results showed that the probability of the occurrence of this parasite is here best formulated by ZINB or HNB models and influential factors of models were found to be correspondent with ecological differences of the regions. ÖZEkolojik çalışmaların çoğunda, ya örneklemlerdeki belirleme hataları ya da türlerin varlıkları için elverişsiz yaşam koşulları sebebiyle, türlerin yoklukları kaçınılmazdır ve bunun sonucu olarak çok fazla miktarda sıfır sayısı ya da bolluğu ortaya çıkar. Bu tipteki veriler için genellikle log(bolluk+1) regresyon modellemesi yapılır ve oluşturulan modelinin kestirim için yetersiz olduğu bilinen bir gerçektir. Sıfır sayılı bollukları içeren, aralarında sıfır ağırlıklı regresyon (ZIP ve ZINB), engelli-poisson (HP) ve engelli negatif binom (HNB) bulunan yeni kesikli modeller klasik regresyon modellerine göre daha çok tercih edilmektedir. Türkiye için ekonomik açıdan en önemli deniz ürünlerinden biri olması nedeniyle, bu çalışmada Akdeniz midyelerinin (Mytilus galloprovincialis L.) varoluşlarının tehditi Nematopsis legeri paraziti için önemli biyotik ve abiyotik faktörlerin belirlenmesinde bu dört modelin performanslarının kıyaslanması amaçlanmıştır. Türkiye'nin Sinop şehrinin üç kıyı bölgesinden toplanan parazitlerin sayılarının ortalamada %50'den fazlasının sıfır değerli olduğu görülmüş ve oluşturulan modellerin kıyaslaması bilgi 379 kriterleri ile yapılmıştır. Sonuçlar bu parazitlerin oluşma olasılıklarını en iyi ZINB ve HNB modelleriyle ifade edildiğini göstermiştir ve modellerde etkili faktörlerin bölgelerin çevresel farklılıklarıyla ilişkili olduğu bulunmuştur.Anahtar Kelimeler: Akdeniz midyesi parazitleri, Poisson regresyon, Negatif binom regresyon, Sıfır ağırlıklı regresyon, Engelli model

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Section: Datamentioning

confidence: 99%

Kesikli Regresyon Modellerinin Kullanımıyla Midye Parazit Sayılarındaki Sıfır Yoğunluğunun Açıklanması

Çankaya¹,

Alpay²,

Özer³

2017

SAÜ Fen Bilimleri Enstitüsü Dergisi

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“…The presence of this parasite was noted from Black Sea, Sinop coast, Turkey [11, 12 and 5], and from Aveiro Lagoon, Portugal [3] in Mediterranean mussels. The trematode parasite Parvatrema duboisi was also reported from the gill filaments of the Mediterranean mussel in Black Sea, Sinop, Turkey [5]. Karagiannis et al [4] conducted a study in order to understand the presence of some parasitic disease and mortality problems in aquaculture system.…”

Section: Introductionmentioning

confidence: 99%

MOLECULAR IDENTIFICATION OF PARASITES ISOLATED FROM MEDITERRANEAN MUSSEL (Mytilus Galloprovincialis Lamarck 1819) SPECIMENS

Yιlmaz¹,

Genc²,

Ünal³

et al. 2020

NWSA

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In this study, Mediterranean mussels (Mytilus galloprovincialis Lamarck, 1819) were collected from the most important mussel distribution/fishing areas in Turkish coastal waters (Çanakkale, Balıkesir, İzmir). The presence of parasite was investigated based on molecular methods. Molecular identification of parasite species was established by designing parasite-specific primers for PCR amplification and resulting nucleotide sequences were analysed. As a result of this study, four parasite species were identified as Mytilicola intestinalis Steuer 1902, Mytilicola orientalis Mori 1935, Urastoma cyprinae Graff 1882, Parvatrema duboisi Dollfus 1923 respectively. All identified species were found in İzmir (Agean Sea) specimens while Urastoma cyprinae and Parvatrema duboisi were found only in Çanakkale (Dardanelle) and Balikesir (Marmara Sea) specimens. Nucleotide composition, pairwise genetic distance and phylogenetic trees of the detected species were given. This research takes place to be the first study on identifying mussel parasites by using molecular techniques. Also, Mytilicola orientalis is the first record from Turkish coastal waters.

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“…Its introduction, culture and transfer to different geographic areas increase the risks of spreading their parasites and diseases around the world (Francisco et al , 2010). Diseases in molluscs caused by parasites have been documented worldwide and Mytilus galloprovincialis has been reported to be infected by several parasites, including the protozoan Nematopsis legeri and Peniculostoma mytili , the turbellarian Urastoma cyprinae , the polychaeta Polydora ciliata and the trematode Parvatrema duboisi (Machkevsky, 1989; Murina & Solonchenko, 1991; Bower et al ., 1994; Robledo et al ., 1994; Belofastova, 1996, 1997; Caceres-Martinez et al ., 1998; Comps & Tige, 1999; Holodkovskaya, 2002; Francisco et al ., 2010; Machkevsky et al ., 2011; Özer & Güneydağ, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…Bataller & Boghen (2000) reported that the visible presence of the worms on the gills, especially when occurring in the hundreds and even thousands, could cause a decrease in demand by the lucrative half-shell market. Urastoma cyprinae has a wide distribution area including the Black Sea, having been recorded in several bivalve species including M. galloprovincialis from both cultured and natural beds (Fleming et al ., 1981; Goggin & Cannon, 1989; Noury-Srairi et al ., 1990; Murina & Solonchenko, 1991, Caceres-Martinez et al ., 1998; Özer & Güneydağ, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…Kent (1981) also reported that high levels of P. ciliata infestations tended to weaken the shells of Mytilus edulis , thus, weak-shelled mussels became more vulnerable to the predatory activities of the crab, Cancer pagurus . Polydora ciliata has been reported from several bivalve species including M. galloprovincialis in the Black Sea (Murina & Solonchenko, 1991; Machkevsky et al ., 2011; Özer & Güneydağ, 2014).…”

Section: Introductionmentioning

confidence: 99%

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Seasonality and host–parasite interrelationship of Mytilus galloprovincialis parasites in Turkish Black Sea coasts

Özer

Güneydağ

2015

J. Mar. Biol. Ass.

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This is the first comprehensive research study on the parasites of Mytilus galloprovincialis collected from the Sinop coasts of the Black Sea and their relationships with several environmental and biotic factors. A total of 1740 mussels were collected monthly at three sampling localities representing different ecosystems in the period between August 2012 and July 2013 and examined for parasites. Identified parasites were Nematopsis legeri, Peniculistoma mytili, Urastoma cyprinae, Parvatrema duboisi and Polydora ciliata. Infection prevalence (%), mean intensity and mean abundance values of each parasite species were calculated according to season, sampling localities and length classes of mussel. Nematopsis legeri was the most prevalent species (32.5%), followed by Pe. mytili (6.70%), U. cyprinae (6.30%), Pa. duboisi (4.50%) and Po. ciliata (2.20%). Nematopsis legeri and Parvatrema duboisi had their highest infection prevalence and intensity values in sampling locality III where secondary hosts present to complete their life cycle and larger sized mussels had higher parasite loads. Statistically significant differences were determined in the prevalence of infection and intensity values among seasons, length classes of mussel and sampling localities of each parasite species. The present study provided valuable information on mussel parasites and their relationships with host length, seasons and ecology.

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First report of some parasites from Mediterranean mussel, Mytilus galloprovincialis Lamarck, 1819, collected from the Black Sea coast at Sinop

Cited by 13 publications

References 19 publications

Kesikli Regresyon Modellerinin Kullanımıyla Midye Parazit Sayılarındaki Sıfır Yoğunluğunun Açıklanması

Kesikli Regresyon Modellerinin Kullanımıyla Midye Parazit Sayılarındaki Sıfır Yoğunluğunun Açıklanması

MOLECULAR IDENTIFICATION OF PARASITES ISOLATED FROM MEDITERRANEAN MUSSEL (Mytilus Galloprovincialis Lamarck 1819) SPECIMENS

Seasonality and host–parasite interrelationship of Mytilus galloprovincialis parasites in Turkish Black Sea coasts

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