Aquatic fungi growing on the eggs of some anadromous fish species of the family Clupeidae

Abstract More than 1.450 marine fish species are commercialized as ornamental fish and approximately 90% of these are wild-caught. Rainford's butterflyfish, Chaetodon rainfordi (McCulloch, 1923), is endemic to the western Pacific. This fish species belongs to one of the main ornamental fish families imported into Brazil. Haliotrema is a genus of the family Dactylogyridae. Species of this genus have very interesting host associations and geographic distributions. The aim of this study was to report on occurrences of exotic Haliotrema aurigae in diseased Rainford butterflyfish that were imported to Brazil. One Rainford’s butterflyfish with suspected parasitic disease was euthanized and subjected to skin and gill scraping. The parasite specimens were mounted on semi-permanent slides with Hoyer’s solution for morphological analysis of sclerotized structures. The hard-sclerotized structures of these specimens were compared and were identified as those of Haliotrema aurigae (Yamaguti, 1968). These results emphasize the importance of implementation of correct control measures at the country’s borders, to avoid the introduction of exotic parasites. In addition, it can be emphasized that the easy adaptation of this parasite to new environments is a concern for ornamental fish farmers.

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Checklists of Species of Ancylodiscoidid and Ancyrocephalid Monogeneans from Fishes of Iraq

Basrah Journal of Agricultural Sciences ◽

10.37077/25200860.2019.256 ◽

2019 ◽

Vol 32 ◽

pp. 45-62

Author(s):

Furhan T. Mhaisen ◽

Kefah N. Abdul-Ameer

Keyword(s):

Fish Species ◽

Host Species ◽

Parasite Species ◽

Fish Host ◽

Marine Habitats ◽

The Family ◽

Freshwater Habitats

Surveying 59 references concerning the occurrence of the monogeneans of the families Ancylodiscoididae and Ancyrocephalidae parasitizing fishes of Iraq showed the occurrence of 11 taxa of the family Ancylodiscoididae (genera Ancylodiscoides, Bychowskyella, Chauhanellus, Hamatopeduncularia and Thaparocleidus) and 19 taxa of the family Ancyrocephalidae (genera Ancyrocephalus, Cichlidogyrus, Cleidodiscus, Haliotrema, Ligophorus and Mastacembelocleidus). These monogeneans were reported from 19 valid fish host species in Iraq. Apart from five parasite species which were recorded from marine habitats (Ancyrocephalus sp., Chauhanellus australis, Haliotrema mugilis, Hamatopeduncularia sp. and Ligophorus mugilinus), the remaining parasite species were recorded from freshwater habitats. Among the infected fishes with these parasites, the Tigris catfish Silurus triostegus was infected with the highest number of parasite species (11 species), the mugilid fishes (Planiliza abu and P. subviridis) were infected with eight and seven parasite species, respectively, while 11 fish species were infected with only one parasite species each. Among the parasite species, Thaparocleidus vistulensis was reported from nine fish host species, while 22 parasite species were reported from one host species each. So far, eight synonymous names were applied for seven valid names of parasites of these two families in Iraq.

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Diet of two syntopic species of Crenuchidae (Ostariophysi: Characiformes) in an Amazonian rocky stream

Biota Neotropica ◽

10.1590/1676-0611-bn-2016-0281 ◽

2017 ◽

Vol 17 (1) ◽

Cited By ~ 1

Author(s):

Suzanne Fernandes ◽

Rafael Pereira Leitão ◽

Eurizângela Pereira Dary ◽

Ana Isabel Camacho Guerreiro ◽

Jansen Zuanon ◽

...

Keyword(s):

Fish Species ◽

Stomach Contents ◽

Relative Volume ◽

Diet Overlap ◽

Frequency Of Occurrence ◽

Food Items ◽

Taxonomic Level ◽

Genus Level ◽

The Family ◽

Feeding Plasticity

Abstract This study assessed the diet of two poorly known syntopic fish species of the family Crenuchidae, Characidium aff. declivirostre and Leptocharacidium omospilus, in a Presidente Figueiredo´ rocky stream, Amazonas, Brazil. The stomach contents were analyzed and their Frequency of Occurrence (FO %) and Relative Volume (Vol %) were combined in a Feeding Index (IAi). We examined 20 individuals of C. aff. declivirostre and 23 of L. omospilus. The Morisita-Horn Index was used to estimate the overlap between the diets of these species. Immature insects were the most valuable items consumed by both fish species. The diet of C. aff. declivirostre was mainly composed of larvae and pupae of Chironomidae, while L. omospilus predominantly consumed larvae of Hydroptilidae, Hydropyschidae and Pyralidae. Thus, both species were classified as autochthonous insectivorous. Characidium aff. declivirostre was considered a more specialized species, probably reflecting lower feeding plasticity or the use of more restricted microhabitats compared to L. omospilus. When the food items were analyzed at the family taxonomic level, the diet overlap between these species was considered moderate (Morisita-Horn Index = 0.4). However, a more thorough analysis, at the genus level, indicates a very low diet overlap. Therefore, we conclude that the feeding segregation between C. aff. declivirostre and L. omospilus may favor their co-existence, despite their high phylogenetic closeness.

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Fish Nematode Huffmanela spp. (Enoplea: Trichinellida: Trichosomoididae)

EDIS ◽

10.32473/edis-in1276-2020 ◽

2021 ◽

Vol 2021 (2) ◽

pp. 4

Author(s):

Jennifer Lynn Gillett-Kaufman ◽

Fauve Wilson

Keyword(s):

Freshwater Fish ◽

Fish Species ◽

Parasitic Nematodes ◽

Swim Bladder ◽

Freshwater Fish Species ◽

The Family ◽

Gut Mucosa

Huffmanela is a genus of parasitic nematodes in the family Trichosomoididae. Huffmanela species infest only one freshwater fish species and a small number of saltwater fishes. They commonly affect many tissues in particular the swim bladder, gut mucosa, skin, and musculature (Carballo and Navone 2007).https://edis.ifas.ufl.edu/in1276

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DISTRIBUTION AND ECOLOGY OF LEECHES (HIRUDINEA) IN BRACKISH WATERS OF THE GERMAN BALTIC

Ecologica Montenegrina ◽

10.37828/em.2015.2.4 ◽

2015 ◽

Vol 2 (1) ◽

pp. 42-50

Author(s):

Uwe Jueg ◽

Michael L. Zettler

Keyword(s):

Fish Species ◽

Brackish Water ◽

East Germany ◽

Host Fish ◽

Brackish Waters ◽

North East ◽

The Family ◽

Distribution And Ecology ◽

Made In

The knowledge about records of leeches (Hirudinea) in Baltic brackish waters of north-east Germany (Mecklenburg-West Pomerania) will be summarized. Observations were made from estuaries of rivers (Stepenitz and Warnow) and lagoons (Darss-Zingst, Stettin) as well in Baltic offshore waters (especially at the Adlergrund/Rønnebank). Altogether 33 taxa are established probably including a new Piscicola species. All species of Glossiphoniidae, Haemopidae and Erpobdellidae could live both in freshwater and oligohaline brackish water up to salinities of 2 psu, few of them even up to 3.6 psu. Only species of the family Piscicolidae are able to penetrate (or to find their optimum?) into mesohaline waters (here up to 13 psu). In the present study several first records for Germany were made in brackish waters (Piscicola kusznierzi, P. elishebae and P. wiktori). Further noteworthy observed species were shortly introduced (Glossiphonia paludosa, Placobdella costata, Italobdella epshteini, Haemopis elegans and Dina apathyi). 7 host fish species could be observed so far.

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