First record of Myxobolus muelleri (Myxosporea: Myxobolidae) in flathead grey mullet Mugil cephalus (Teleostei, Mugilidae) from Turkey

Abstract

Myxobolus muelleri (Myxosporea: Myxobolidae), a myxosporidian parasite, was found for the first time infecting gills of flathead grey mullet (Mugil cephalus Linnaeus, 1758)from the Samsun coastal waters of Turkey. The shapes of the mature spores were regularly oval. Some spores somewhat tapered anterior end, others completely round. Spores ranged from 8.3 (7.2-9.0) µm in length, 7 (6.4-7.4) µm widths and 4.7 (4.5-4.9) µm in thickness. Two polar capsules were pyriform in shape, equal in size, 3 (2.5-3.5) µm long and 1.8 (1.5-2.5) µm wide. Polar capsules were usually extended half of spore cavity. There was a large intercapsular appendix between the anterior ends of the polar capsules. There were up to 6-8 sutural marking along the sutural edge. No iodinophilous vacuole discernible in the sporoplasm of the spores

Keywords

• Mugil cephalus
• flathead grey mullet
• Myxobolus muelleri
• Turkey

Türkiye’de has kefalde (Teleostei, Mugilidae) ilk Myxobolus muelleri (Myxosporea: Myxobolidae)olgusu

Abstract

Samsun sahillerinde yakalanan Has kefal’in (Mugil cephalus Linnaeus, 1758) solungaçlarından ilk kez Myxobolus muelleri (Myxosporea: Myxobolidae) saptanmıştır. Ergin sporlar oval şekilde, 8.3 (7.2-9.0) µm uzunlukta, 7 (6.4-7.4) µm genişlikte ve 4.7 (4.5-4.9) µm kalınlıkta ölçülmüştür. İki polar kapsül armut şeklinde ve eşit büyüklükte olup, 3 (2.5-3.5) µm uzunlukta ve 1.8 (1.5-2.5) µm genişliktedir. Polar kapsüller spor boşluğunun yarısını kapsamaktadır. Polar kapsüllerin ön tarafları arasında büyük kapsüler açıklık saptanmıştır. Kaynaşma (sütürel) kenarı boyunca olan sütürel çıkıntıların sayısı 6–8 adettir. Sporoplazmada fark edilebilir düzeyde iyot boyası ile boyanabilen boşluk görülmemiştir

Keywords

• Mugil cephalus
• has kefal
• Myxobolus muelleri
• Türkiye

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