Karyomegaly in Baryancistrus sp. (Loricaridae) from Amazonian Brazil.

نویسندگان

  • I Paperna
  • D Di Cave
چکیده

Vesicular karyomegaly of the liver hepatocytes is described from Baryancistrus sp. (Loricaridae), in 3 out of 7 fish, collected from Rio Xingu in central Amazonian (neutral water) Brazil and kept about 2 wk in a holding facility fed with acid water (pH 5.0 to 5.5). Altered cells also occurred in the gill epithelium. The vesicles in the liver were shown to contain a periodic acid-Schiff (PAS)-positive substance or residue.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Kidney sphaerosporosis with extrasporogonic stages in the blood in Baryancistrus sp. (Loricaridae) from Amazonian Brazil.

Examined fish of the genus Baryancistrus (Loricaridae) from Rio Xingu in central amazonian Brazil were found infected with extrasporogonic stages of Sphaerospora sp. (Myxosporea) in the blood and sporogonic stages in the glomeruli with the resulting escape of the sporogony products into the renal tubules, apparently when the mesangial tissue in the Bowman's capsule collapsed. Spores were seen e...

متن کامل

Two new species in the Matelea stenopetala complex (Apocynaceae, Asclepiadoideae) from the Guiana Shield and Amazonian Brazil

Two new species in the Matelea stenopetala complex (Apocynaceae, Asclepiadoideae) are described from the Guiana Shield and Amazonian Brazil: Matelea brevistipitata Krings & Morillo, sp. nov. and Matelea trichopedicellataKrings & Morillo, sp. nov. The new species belong to a small group of adaxially-pubescent-flowered taxa within the complex, including Matelea hildegardiana and Matelea pakaraime...

متن کامل

Two new species of Fittkauimyia Karunakaran (Diptera: Chironomidae) from Brazil.

Two new species of the genus Fittkauimyia from Brazil are described and illustrated. Fittkauimyia mayumiae sp. n. from Amazonian forest is described based on adult male, female and pupae and F. carranquensis sp. n. from mountainous region of southeast is described based on adult male and pupae.

متن کامل

Riethia manauara n. sp., an Amazonian Chironomid (Diptera: Chironomidae) from Brazil.

One new species of Riethia Kieffer, Riethia manauara n. sp., is described and figured as male, pupa and larva. The generic diagnosis for pupae and larvae are emended. The specimens were collected from water systems in the Amazon Rainforest in northern Brazil.

متن کامل

Helminths of the teiid lizard Kentropyx calcarata (Squamata) from an Amazonian site in western Brazil.

Despite being conspicuous members of neotropical lizard communities, aspects of the life history of many teiid lizard species are poorly known, especially endoparasites infecting the genus Kentropyx. We studied seven specimens of K. calcarata collected at an Amazonian site in Mato Grosso state, Central Brazil in 2007. Four species of helminth were recovered: Oswaldocruzia sp., Piratuba digitica...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:
  • Diseases of aquatic organisms

دوره 45 2  شماره 

صفحات  -

تاریخ انتشار 2001