scholarly journals Helminth parasites of freshwater fishes, Nazas River basin, northern Mexico

Check List ◽  
2010 ◽  
Vol 6 (1) ◽  
pp. 026 ◽  
Author(s):  
Gerardo Pérez-Ponce De León ◽  
Rogelio Rosas-Valdez ◽  
Rogelio Aguilar-Aguilar ◽  
Berenit Mendoza-Garfias ◽  
Carlos Mendoza-Palmero ◽  
...  
Keyword(s):  
River Basin ◽  
Freshwater Fishes ◽  
Helminth Species ◽  
Helminth Parasites ◽  
Northern Mexico ◽  
Individual Fish

This paper represents the first study of the helminth parasites of freshwater fishes from the Nazas River basin in northern Mexico. Between July 2005 and December 2008, 906 individual fish were collected and examined for helminth parasites in 23 localities along the river basin. Twenty-three species of fish were examined as a part of this inventory work. In total, 41 helminth species were identified: 19 monogeneans, 10 digeneans, seven cestodes, one acanthocephalan, and four nematodes. The biogeographical implications of our findings are briefly discussed.

Survey of the endohelminth parasites of freshwater fishes in the upper Mezquital River Basin, Durango State, Mexico

Zootaxa ◽  
2009 ◽  
Vol 2164 (1) ◽  
pp. 1-20 ◽  
Author(s):  
G. PÉREZ-PONCE DE LEÓN ◽  
R. ROSAS-VALDEZ ◽  
B. MENDOZA-GARFIAS ◽  
R. AGUILAR-AGUILAR ◽  
J. FALCÓN-ORDAZ ◽  
...  
Keyword(s):  
River Basin ◽  
Fish Fauna ◽  
Freshwater Fishes ◽  
Point Of View ◽  
Helminth Parasites ◽  
Northern Mexico ◽  
Transitional Area ◽  
Freshwater Fish Fauna ◽  
New Hosts ◽  
Host Parasite

As a part of an ongoing inventory of the helminth parasites of freshwater fishes in Mexico, 676 specimens were collected between November 2007 and December 2008 in 23 localities along the upper Mezquital River Basin in Durango State, northern Mexico. Sixteen species of hosts, mostly corresponding to Nearctic freshwater elements, were studied. A total of 1,230 individual worms were collected during this survey, representing 25 species of endohelminths of which 9 were digeneans, 3 were cestodes, 4 were acanthocephalans, and 9 were nematodes. The checklist contains 24 new hosts and 42 new locality records. The information provided in this checklist may be helpful for our understanding of the biodiversity and historical biogeography of this host-parasite system, since the Mezquital River Basin mostly contains a Nearctic freshwater fish fauna, with a few Neotropical and endemic elements and may represent a transitional area from a biogeographical point of view.

Helminth Parasites of Freshwater Fishes of the Pánuco River Basin, East Central Mexico

10.1654/4088 ◽  
2004 ◽  
Vol 71 (2) ◽  
pp. 190-202 ◽  
Author(s):  
Guillermo Salgado-Maldonado ◽  
Guillermina Cabañas-Carranza ◽  
Eduardo Soto-Galera ◽  
Raúl F. Pineda-López ◽  
Juan Manuel Caspeta-Mandujano ◽  
...  
Keyword(s):  
River Basin ◽  
Freshwater Fishes ◽  
Central Mexico ◽  
Helminth Parasites ◽  
East Central

The ecology of parasites of freshwater fishes: the search for patterns

Parasitology ◽  
2009 ◽  
Vol 136 (12) ◽  
pp. 1653-1662 ◽  
Author(s):  
C. R. KENNEDY
Keyword(s):  
Community Dynamics ◽  
Parasite Community ◽  
Freshwater Fishes ◽  
Convincing Evidence ◽  
Helminth Parasites ◽  
Parasite Communities ◽  
Space And Time ◽  
Long Time ◽  
Population And Community Dynamics ◽  
Parasite Populations

SUMMARYDevelopments in the study of the ecology of helminth parasites of freshwater fishes over the last half century are reviewed. Most research has of necessity been field based and has involved the search for patterns in population and community dynamics that are repeatable in space and time. Mathematical models predict that under certain conditions host and parasite populations can attain equilibrial levels through operation of regulatory factors. Such factors have been identified in several host-parasite systems and some parasite populations have been shown to persist over long time-periods. However, there is no convincing evidence that fish parasite populations are stable and regulated since in all cases alternative explanations are equally acceptable and it appears that they are non-equilibrial systems. It has proved particularly difficult to detect replicable patterns in parasite communities. Inter-specific competition, evidenced by functional and numerical responses, has been detected in several communities but its occurrence is erratic and its significance unclear. Some studies have failed to find any nested patterns in parasite community structure and richness, whereas others have identified such patterns although they are seldom constant over space and time. Departures from randomness appear to be the exception and then only temporary. It appears that parasite communities are non-equilibrial, stochastic assemblages rather than structured and organized.

Gill ectoparasite assemblages of two non-native Cichla populations (Perciformes, Cichlidae) in Brazilian reservoirs

2010 ◽  
Vol 85 (2) ◽  
pp. 185-191 ◽  
Author(s):  
F.H. Yamada ◽  
L.N. Santos ◽  
R.M. Takemoto
Keyword(s):  
Standard Length ◽  
Dominant Species ◽  
Parasite Species ◽  
Freshwater Fishes ◽  
Helminth Species ◽  
Species Loss ◽  
Invasion Process ◽  
Key Factors ◽  
Typical Pattern ◽  
Peacock Bass

AbstractThe gills of 41 Cichla piquiti and 39 C. kelberi from Itaipu and Lajes reservoirs, respectively, Brazil, were examined to describe the ectoparasite assemblages of these two non-native peacock-bass populations. All ectoparasite species of the two studied hosts (C. piquiti and C. kelberi) were dominant, but Ascocotyle sp. (metacercariae) was the prevalent (58.53%) and most abundant helminth species in C. piquiti hosts, while Sciadicleithrum ergensi was the dominant species in C. kelberi hosts. Gill ectoparasites of C. piquiti and C. kelberi showed a typical pattern of overdispersion or aggregation, which is commonly reported for many other freshwater fishes. Ectoparasite prevalence and abundance did not vary between host sexes of the two Cichla populations. The prevalence and abundance of Ascocotyle sp. were positively correlated with C. piquiti standard length (SL), but only the abundance of S. ergensi showed a positive correlation with C. kelberi SL. Although environmental differences between reservoirs might also have influenced the results, we anticipated that the presence of a close congener in Itaipu reservoir and the lack of other Cichla species in Lajes reservoir were the key factors to explain the contrasts between C. piquiti and C. kelberi gill ectoparasites. Overall, our results suggest that the trend of parasite species loss through the invasion process may have contributed to the establishment of non-native C. piquiti and C. kelberi populations in Brazilian reservoirs.

scholarly journals Additional records of non-native freshwater fishes for the Ebro River basin (Spain)

2010 ◽  
Vol 5 (3) ◽  
pp. 291-296 ◽  
Author(s):  
Rafael Miranda ◽  
Pedro Leunda ◽  
Javier Oscoz ◽  
Antonio Vilches ◽  
Ibon Tobes ◽  
...  
Keyword(s):  
River Basin ◽  
Freshwater Fishes ◽  
Ebro River

Considerations for the Propagation and Conservation of Endangered Lake Suckers of the Western United States

2017 ◽  
Vol 8 (1) ◽  
pp. 301-312 ◽  
Author(s):  
Julie L. Day ◽  
Jennifer L. Jacobs ◽  
Josh Rasmussen
Keyword(s):  
United States ◽  
River Basin ◽  
Freshwater Fishes ◽  
Western United States ◽  
Numerous Species ◽  
Klamath River ◽  
Western Lake ◽  
Prevention Measure ◽  
Klamath River Basin ◽  
Anthropogenic Threats

Abstract Decades of persistent natural and anthropogenic threats coupled with competing water needs have compromised numerous species of freshwater fishes, many of which are now artificially propagated in hatcheries. Low survival upon release is common, particularly in systems with substantial nonnative predator populations. Extensive sampling for Shortnose (Chasmistes brevirostris) and Lost River Suckers (Deltistes luxatus) in the Klamath River Basin on the California–Oregon border have failed to detect any new adult recruitment for at least two decades, prompting an investigation into artificial propagation as an extinction prevention measure. A comprehensive assessment of strategies and successes associated with propagation for conservation restocking has not been performed for any Catostomid. Here, we review available literature for all western lake sucker species to inform propagation and recovery efforts for Klamath suckers and summarize the relevance of these considerations to other endangered fishes.

Nematodes and cestodes of rodents in South Africa: baseline data on diversity and geographic distribution

2019 ◽  
Vol 94 ◽  
Author(s):  
A. Spickett ◽  
K. Junker ◽  
G. Froeschke ◽  
V. Haukisalmi ◽  
S. Matthee
Keyword(s):  
South Africa ◽  
Host Range ◽  
Geographic Distribution ◽  
Host Species ◽  
Baseline Data ◽  
Helminth Species ◽  
Rodent Species ◽  
Helminth Parasites ◽  
Gastrointestinal Helminths ◽  
Naturally Occurring

Abstract Currently, descriptive information on the host range and geographic distribution of helminth parasites associated with naturally occurring rodents in South and southern Africa is scant. Therefore, we embarked on a countrywide study to: (1) identify gastrointestinal helminths and their host range, and (2) provide baseline data on the geographic distribution of helminths across the country. Altogether, 55 helminth taxa were recovered from at least 13 rodent species (n = 1030) at 26 localities across South Africa. The helminth taxa represented 25 genera (15 nematodes, nine cestodes and one acanthocephalan). Monoxenous nematodes were the most abundant and prevalent group, while the occurrence of heteroxenous nematodes and cestodes was generally lower. The study recorded several novel helminth–host associations. Single-host-species infections were common, although multiple-host-species infections by helminth species were also recorded. Monoxenous nematodes and some cestodes were recovered countrywide, whereas heteroxenous nematodes were restricted to the eastern regions of South Africa. The study highlights the as yet unexplored diversity of helminth species associated with naturally occurring rodent species and provides initial data on their geographical distribution in South Africa.

scholarly journals Helminth parasites of alien freshwater fishes in Patagonia (Argentina)

2018 ◽  
Vol 7 (3) ◽  
pp. 369-379 ◽  
Author(s):  
Carlos Rauque ◽  
Gustavo Viozzi ◽  
Verónica Flores ◽  
Rocío Vega ◽  
Agustina Waicheim ◽  
...  
Keyword(s):  
Freshwater Fishes ◽  
Helminth Parasites

Checklist of helminth parasites of cetaceans from Brazil

Zootaxa ◽  
2010 ◽  
Vol 2548 (1) ◽  
pp. 57 ◽  
Author(s):  
JOSÉ L. LUQUE ◽  
LUÍS C. MUNIZ-PEREIRA ◽  
SALVATORE SICILIANO ◽  
LIEGE R. SIQUEIRA ◽  
MAGDA S. OLIVEIRA ◽  
...  
Keyword(s):  
Helminth Fauna ◽  
Helminth Species ◽  
Helminth Parasites ◽  
Helminthological Collection ◽  
Unpublished Information

Based on published records and unpublished information retrieved from the Helminthological Collection of the Oswaldo Cruz Institute (CHIOC), a checklist of the helminth parasites of cetaceans from Brazil was generated. A total of 215 records of 18 species of helminths were associated with 22 species of cetaceans in Brazil. Six species determined only to genus were also included. The majority of these helminth species are nematodes (33.3%) and trematodes (33.3%), which total 66.6% of the helminth fauna of cetaceans from Brazil. The Acanthocephala represents 22.2% of species, and the Cestoda 11.1%.

Checklist of helminth parasites of threatened vertebrate species from Brazil

Zootaxa ◽  
2009 ◽  
Vol 2123 (1) ◽  
pp. 1-45 ◽  
Author(s):  
LUÍS C. MUNIZ-PEREIRA ◽  
FABIANO M. VIEIRA ◽  
JOSÉ L. LUQUE
Keyword(s):  
Host Species ◽  
Helminth Species ◽  
Helminth Parasites ◽  
Vertebrate Species ◽  
Helminthological Collection ◽  
New Host ◽  
Unpublished Information ◽  
New Host Records

Using available records, unpublished information retrieved from the Helminthological Collection of the Oswaldo Cruz Institute (CHIOC) and published reports, a checklist of the recorded helminth parasites of endangered vertebrates from Brazil was generated. A total of 772 records and 186 helminth species (6 Acanthocephala, 83 Nematoda, 23 Cestoda, 64 Trematoda, 10 Monogenea) in 76 host species (7 Actinopterygii, 8 Chondrichthyes, 1 Amphibia, 10 Reptilia, 22 Aves, 28 Mammalia) from Brazil were listed in the present work, including 39 undetermined helminth species and 10 new host records. This is the first compilation of the helminth parasites of threatened vertebrates in Brazil and in the Neotropics.

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