New species of Proterometra (Digenea: Azygiidae) and its life cycle in the Chickasawhay River, Mississippi, USA, with supplemental observations of Proterometra autraini

Womble, Matthew R.; Orélis-Ribeiro, Raphael; Bullard, Stephen A.

doi:10.1016/j.parint.2015.09.005

Cited by 12 publications

(4 citation statements)

References 44 publications

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“…Experimental infections have been performed to elucidate trematode life cycles in South America (Choudhury et al ., 2016), but molecular tools have shown a remarkable capacity for linking life-cycle stages, mainly when the larvae are morphologically distant from the adult forms (Jensen & Bullard, 2010; Locke et al ., 2011; Womble et al ., 2016). Despite several records of metacercariae from freshwater fish in South America (Ostrowski de Núñez & Gil de Pertierra, 2004), few data are available using an integrated morphological and molecular approach, e.g.…”

Section: Taxonomy and Systematics Of The Helminths Parasitic In Fish mentioning

confidence: 99%

Helminth parasites of South American fishes: current status and characterization as a model for studies of biodiversity

et al. 2016

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The South American subcontinent supports one of the world's most diverse and commercially very important ichthyofauna. In this context, the study of South American fish parasites is of increased relevance in understanding their key roles in ecosystems, regulating the abundance or density of host populations, stabilizing food webs and structuring host communities. It is hard to estimate the number of fish parasites in South America. The number of fish species studied for parasites is still low (less than 10%), although the total number of host-parasite associations (HPAs) found in the present study was 3971. Monogeneans, with 835 species (1123 HPAs, 28.5%), and trematodes, with 662 species (1127 HPAs, 30.9%), are the more diverse groups. Data gathered from the literature are useful to roughly estimate species richness of helminths from South American fish, even though there are some associated problems: the reliability of information depends on accurate species identification; the lack of knowledge about life cycles; the increasing number of discoveries of cryptic species and the geographically biased number of studies. Therefore, the closest true estimations of species diversity and distribution will rely on further studies combining both molecular and morphological approaches with ecological data such as host specificity, geographical distribution and life-cycle data. Research on biodiversity of fish parasites in South America is influenced by problems such as funding, taxonomic impediments and dispersion of research groups. Increasing collaboration, interchange and research networks in the context of globalization will enable a promising future for fish parasitology in South America.

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Section: Taxonomy and Systematics Of The Helminths Parasitic In Fish mentioning

confidence: 99%

Helminth parasites of South American fishes: current status and characterization as a model for studies of biodiversity

et al. 2016

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“…In contrast, the species of Macroderoides Pearse, 1924 infect a small group of divergent hosts (Tkach & Kinsella, 2011). In the Azygiidae, Proterometra Horsfall, 1933 has diversified in Lepomis (sunfishes) (LaBeau & Peters, 1995;Womble et al, 2016), and Leuceruthrus Marshall & Gilbert, 1905 Hoffman, 1999) presents a curious case; members of this large family mainly parasitize birds and mammals and some infections in fish may be incidental (Hoffman, 1999 records four species), but Microphallus ovatus Osborn, 1919 matures in fishes (Hoffman, 1999).…”

Section: Life-cyclesmentioning

confidence: 99%

Trematode diversity in freshwater fishes of the Globe II: ‘New World’

et al. 2016

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We provide a summary overview of the diversity of trematode parasites in freshwater fishes of the 'New World', i.e. the Americas, with emphasis on adult forms. The trematode fauna of three regions, South America, Middle America, and USA and Canada (North America north of Mexico), are considered separately. In total, 462 trematode species have been reported as adults from the Americas. The proportion of host species examined for parasites varies widely across the Americas, from a high of 45% in the Mexican region of Middle America to less than 5% in South America. North and South America share no adult species, and one exclusively freshwater genus, Creptotrema Travassos, Artigas & Pereira, 1928 in the Allocreadiidae Looss, 1902 is the most widely distributed. Metacercariae of strigeiforms maturing in fish-eating birds (e.g. species of the Diplostomidae Poirier, 1886) are common and widely distributed. The review also highlights the paucity of known life-cycles. The foreseeable future of diversity studies belongs to integrative approaches and the application of molecular ecological methods. While opportunistic sampling will remain important in describing and cataloguing the trematode fauna, a better understanding of trematode diversity and biology will also depend on strategic sampling throughout the Americas.

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“…Many researchers have added to our knowledge of this cosmopolitan species. To date, species of Azygia are frequently reported from the esophagus, stomach, and intestine of a wide range of predatory fishes from Asia, Europe and North America, including China, Japan, India, Russia, Germany, and North America ( Tubangui 1928 ; Tsin 1933 ; Moravec and Sey 1989 ; Marcogliese and Cone 1996 ; Besprozvannykh 2005 ; Jadhav et al 2011 ; Pallewad et al 2015 ; Womble et al 2016 ; Nagasawa and Katahira 2017 ).…”

Section: Introductionmentioning

confidence: 99%

Characterization and comparative analysis of the complete mitochondrial genome of Azygia hwangtsiyui Tsin, 1933 (Digenea), the first for a member of the family Azygiidae

Wu¹,

Gao²,

Cheng³

et al. 2020

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Azygia hwangtsiyui (Trematoda, Azygiidae), a neglected parasite of predatory fishes, is little-known in terms of its molecular epidemiology, population ecology and phylogenetic study. In the present study, the complete mitochondrial genome of A. hwangtsiyui was sequenced and characterized: it is a 13,973 bp circular DNA molecule and encodes 36 genes (12 protein-coding genes, 22 transfer RNA genes, two ribosomal RNA genes) as well as two non-coding regions. The A+T content of the A. hwangtsiyui mitogenome is 59.6% and displays a remarkable bias in nucleotide composition with a negative AT skew (–0.437) and a positive GC skew (0.408). Phylogenetic analysis based on concatenated amino acid sequences of twelve protein-coding genes reveals that A. hwangtsiyui is placed in a separate clade, suggesting that it has no close relationship with any other trematode family. This is the first characterization of the A. hwangtsiyui mitogenome, and the first reported mitogenome of the family Azygiidae. These novel datasets of the A. hwangtsiyui mt genome represent a meaningful resource for the development of mitochondrial markers for the identification, diagnostics, taxonomy, homology and phylogenetic relationships of trematodes.

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New species of Proterometra (Digenea: Azygiidae) and its life cycle in the Chickasawhay River, Mississippi, USA, with supplemental observations of Proterometra autraini

Cited by 12 publications

References 44 publications

Helminth parasites of South American fishes: current status and characterization as a model for studies of biodiversity

Helminth parasites of South American fishes: current status and characterization as a model for studies of biodiversity

Trematode diversity in freshwater fishes of the Globe II: ‘New World’

Characterization and comparative analysis of the complete mitochondrial genome of Azygia hwangtsiyui Tsin, 1933 (Digenea), the first for a member of the family Azygiidae

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