<b>Fish parasite diversity in the Amambai river, State Mato Grosso do Sul, Brazil

Abstract

This study aimed to describe the diversity of fish parasites in the Amambai River, in the Mato Grosso do Sul State, and generate information to facilitate studies of the biotic integrity of the region. During the period of September 2015 and July 2015, 48 specimens of 11 species of fish were analyzed for parasites. A total of 56.25% of the fish sampled from the Amambai River were infected with one or more metazoan species. A total of 21,514 parasite specimens belonging to 24 different species we found; they were distributed among six groups: Acanthocephala (Neoechinorhynchida), Cestoda (Proteocephalidea), Crustacea (Ergasilidae), Digenea (Cladorchiidae, Dadaytrema), Monogenea (Dactylogyridae) and Nematoda (Atractidae, Cucullanidae, Camallanidae, Rhabdochonidae). Of these, a monogenean, Mymarothecium sp. and four nematodes-Cucullanus sp.; Procamallanus (Spirocamallanus) inopinatus Travassos, Artigas, and Pereira, 1928; Rabdochona acuminate (Molin, 1860); and Rondonia rondoni Travassos, 1920-were recorded for the first time on new hosts. This is the first work to gather information about the parasite fauna of fish from Amambai River in the Mato Grosso do Sul State, and provides records that contribute new reports of the occurrence of parasites in new locations.

Nematofauna of red piranha Pygocentrus nattereri (Kner, 1958) (Characiformes: Serrasalmidae) from Amazonia, Brazil

“…Fish of wild populations have a more diversified diet than those in manmade lakes and reservoirs, which can positively affect the composition of endoparasites because the diet can include numerous animals that act as intermediate and/or paratenic hosts (PEREIRA et al, 2018). In the present study, Capillariidae gen.…”

MICROBIOLOGY QUALITY OF TINFOIL BARB Barbonymus schwanenfeldii FROM TEMBAT AND PETUANG RIVERS, KENYIR LAKE, MALAYSIA IN ASSOCIATION WITH NEMATODES, Cucullanus sp INFECTION

“…However, they added that the prevalence and mean intensity were Science and Management Volume 16 Number 4, June 2021: 75-84 recorded at 0.3 % and one per fish, respectively, which was the lowest value for a parasite species found in fish of Tonga Lake. On the other hand, Pereira et al (2018) found a 2.08% prevalence of Cucullanus sp. infestation in long-whiskered catfish (Sorubin lima) caught in the Amambai river in Brazil, which was a new parasite record for this host.…”

Dactylogyrids (Platyhelminthes, Monogenea) from the gill lamellae of doradids (Siluriformes) with description of five new species of Cosmetocleithrum and new geographical distribution for known species from the Neotropical Region, Brazil

“…Hooks with ancyrocephaline distribution. Hooks similar in shape and size; point and shaft delicate, erect thumb, shank expanded, tapering abruptly proximally in a point, 15 (13)(14)(15)(16); n = 70); FH loop about 3/4 shank length.…”

“…Currently, 23 species of Cosmetocleithrum are recognized as parasites of the gills of neotropical Siluriformes, among which 15 species recorded in doradids hosts, eight in Auchenipteridae, one parasitizing Pimelodidae, and one in Loricariidae. All species of Cosmetocleithrum have been described from hosts of members of a single family [1,4,5,15,22,23,24], except for Cosmetocleithrum bulbocirrus Kritsky, Thatcher & Boeger, 1986, reported from species of three different siluriform families and from Hoplias malabaricus (Bloch), a characiform fish [7]. However, considering that only one specimen was found in the latter host, this record needs to be confirmed.…”