scholarly journals Helminth parasites of Phyllodactylidae and Gekkonidae lizards in a Caatinga ecological station, northeastern Brazil

2017 ◽  
Vol 17 (4) ◽  
Author(s):  
Vandeberg F. Lima ◽  
Samuel V. Brito ◽  
João A. Araujo Filho ◽  
Diêgo A. Teles ◽  
Samuel C. Ribeiro ◽  
...  
Keyword(s):  
Parasite Species ◽  
Nematode Species ◽  
Northeastern Brazil ◽  
Semiarid Region ◽  
South American ◽  
Helminth Parasites ◽  
Lizard Species ◽  
New Hosts ◽  
Prevalent Species ◽  
New Occurrences

Abstract We investigated the parasites of five lizard species belonging to Phyllodactylidae (Phyllopezus pollicaris and Gymnodactylus geckoides) and Gekkonidae (Hemidactylus agrius, Lygodactylus klugei and Hemidactylus brasilianus) families in a semiarid region of Brazil. Six nematode species were identified: Parapharyngodon alvarengai and Spauligodon oxkutzcabiensis (Pharyngodonidae), Physaloptera lutzi (Physalopteridae), Skrjabinelazia intermedia (Seuratidae), Trichospirura sp. (Rhabdochonidae) and Piratuba sp. (Onchocercidae), and a cestode species, Oochoristica sp. (Linstowiidae). The most prevalent species were Spauligodon oxkutzcabiensis, which infected P. pollicaris (75%), and Parapharyngodon alvarengai, which infected G. geckoides (29%). South American lizards were identified as being new hosts for the Trichospirura genus (a usual parasite of mammals), and there were 16 new occurrences of parasite species in the five lizard species studied herein.

scholarly journals Diversity of enteric coccidia in pigs from the Paraíba Semiarid Region of Northeastern Brazil

2020 ◽  
Vol 29 (4) ◽  
Author(s):  
Hosaneide Gomes de Araújo ◽  
Juliana Trajano da Silva ◽  
Wlysse Ferreira Sarmento ◽  
Samara dos Santos Silva ◽  
Roberto Alves Bezerra ◽  
...  
Keyword(s):  
Morphological Analysis ◽  
The State ◽  
Northeastern Brazil ◽  
Semiarid Region ◽  
Mixed Infections ◽  
Family Farming ◽  
Fecal Samples ◽  
Hemorrhagic Enteritis ◽  
Prevalent Species ◽  
Genus Eimeria

Abstract There is great diversity in swine coccidia, which are responsible for causing intestinal disorders ranging from sporadic diarrhea to severe cases of hemorrhagic enteritis. Thus, determining the species of coccidia that affect the animals of a region and associating them with the characteristics of the farms become extremely important. The objective of this study was to determine the prevalence of coccidia parasites in pigs reared in a family farming production system in the Semiarid Region of the State of Paraíba, Northeast Brazil. Fecal samples for analysis were collected from 187 pigs on 51 farms. For morphological analysis, 1,590 sporulated oocysts were used. The prevalence of oocysts in fecal samples was 56.6% (106/187). The most prevalent species were Eimeria suis (21.9%), followed by Eimeria neodebliecki (16.6%), Eimeria perminuta (14.9%), Eimeria polita (12.8%), Eimeria debliecki (10.6%), Eimeria porci (10.1%), Cystoisospora suis (3.7%), Eimeria scabra (1.6%) and Eimeria cerdonis (0.5%). It can be concluded that pigs from the Semiarid Region of the State of Paraíba were parasitized by a diversity of coccidia species, mainly of the genus Eimeria, and predominantly presented with mixed infections occurring in the subclinical form.

scholarly journals Seasonal distribution of gastrointestinal nematode infections in sheep in a semiarid region, northeastern Brazil

2013 ◽  
Vol 22 (3) ◽  
pp. 351-359 ◽  
Author(s):  
Maria de Fátima de Souza ◽  
Manoel Pimentel-Neto ◽  
André Luís Santos de Pinho ◽  
Rízia Maria da Silva ◽  
Albeísa Cleyse Batista Farias ◽  
...  
Keyword(s):  
Gastrointestinal Nematode ◽  
Parasite Load ◽  
Nematode Species ◽  
Seasonal Distribution ◽  
Northeastern Brazil ◽  
Semiarid Region ◽  
Parasitic Infections ◽  
P Value ◽  
Fecal Egg Count ◽  
Gastrointestinal Nematode Parasite

The objective of this study was to determine the seasonal distribution and gastrointestinal nematode parasite load in crossbred Santa Inês tracer lambs, and to correlate the rainfall during the study period with occurrences of parasitic infections. Sixty-four male tracer lambs between the ages of four and eight months were used in the study. Two tracer lambs were inserted into the herd every 28 days to determine the pattern of infective larvae available in the environment. Variation in the fecal egg count (FEC) of nematodes was observed at the study site, with many samples containing undetectable parasite loads during the dry season. The larvae identified in coprocultures wereHaemonchus sp., Trichostrongylus sp.,Cooperia sp., Strongyloides sp. andOesophagostomum sp. The nematodes recovered at necropsy were Haemonchus contortus, Trichostrongylus colubriformis, Cooperia punctata, C. pectinata, Trichuris sp.,Oesophagostomum sp. and Skrajabinema ovis. The total number of larvae and the total number of immature and adult forms recovered from the tracers showed seasonal distributions that significantly correlated with the amount of rainfall received that month (p value ≅ 0.000 in all cases ). The species H. contortus was predominant in the herd and should be considered to be main pathogenic nematode species in these hosts under these conditions.

Parasitofauna of ground-dwelling anurans from cocoa plantations in Ugboke, Edo State, Nigeria

2021 ◽  
Vol 18 (1) ◽  
pp. 8-18
Author(s):  
O. Edo-Taiwo ◽  
M.S.O. Aisien
Keyword(s):  
Parasite Species ◽  
Infection Intensity ◽  
Parasite Burden ◽  
Parasite Prevalence ◽  
Nematode Species ◽  
Helminth Parasites ◽  
Susceptible Host ◽  
Edo State ◽  
The Village ◽  
Cocoa Plantation

The parasitofauna of ground-dwelling anurans from pesticide-treated cocoa plantations (CP) in Ojo Camp, Ugboke, Edo State of Nigeria were investigated and compared with those recovered from host specimens collected from the village settlement (VS). The anurans were caught by hand following visual or acoustic location. The anurans encountered in both the VS and the CP included Aubria subsigillata, Hylarana spp. (H. albolabris and H. galamensis), Sclerophrys spp. (S. maculata and S. regularis), Ptychadena spp. (P. aequiplicata, P. longirostris, P. mascareniensis, P. oxyrhynchus and P. pumilio) and Hoplobatrachus occipitalis. Hylarana galamensis, Ptychadena spp. and Sclerophrys spp. were encountered in the VS and the CP while Aubria subsigillata, H. albolabris and H. occipitalis occurred only in the CP. The helminth parasites recovered included four cestode species (adult of Cylindrotaenia jaegerskioeldi and three encysted  proteocephalid larvae), five Polystoma spp. 11 species of digeneans and 19 nematode species. More parasite species were recovered from toads collected from the VS; parasite prevalence was generally low in both habitats but the intensity of infection was higher in the specimens collected from the VS. Although cip A. subsigillata and H. ocitalis both occurred in the CP, A. subsigillata was the more susceptible host of the two, harbouring 16 helminth parasites as against four from H. occipitalis. Polystomes were recovered from H. albolabris and H. galamensis in addition to Diplodiscus fischthalicus and Mesocoelium spp. Infections occurred  mostly among the Ptychadeniidae collected from the CP, with prevalence ranging from 12.5% to 100% and infection intensity from 1.0 to 13.0. The generally low parasite burden in anurans from the CP can possibly be attributed to the pesticide contamination of this habitat which may have hindered the development of the free-living stages of parasites in this milieu. Keywords: Anurans; cocoa plantation; pesticides; parasitofauna; prevalence; intensity.  

scholarly journals Checklist of helminth parasites of Striped Red Mullet, Mullus surmuletus (Linnaeus, 1758) (Perciformes: Mullidae), caught in the Bay of Kristel , Algeria (western Mediterranean)

Check List ◽  
2014 ◽  
Vol 11 (1) ◽  
pp. 1504 ◽  
Author(s):  
Maya Meriem Hassani ◽  
Ahmed Kerfouf ◽  
Zitouni Boutiba
Keyword(s):  
Parasite Species ◽  
Nematode Species ◽  
Western Mediterranean ◽  
Helminth Parasites ◽  
Digenean Species ◽  
Red Mullet ◽  
Mullus Surmuletus

This investigation on the parasitic biodiversity of Striped Red Mullet, Mullus surmuletus, revealed the presence of 14 parasite species, including seven species of Digenea, four species of Nematoda, two species of Acanthocephala, and one Cestoda. Opecoelides furcatus and Proctotrema bacilliovatum are the most prevalent digenean species, present in 70% and 17% of the fish specimens analyzed, respectively. Concerning nematode species, Hysterothylacium fabri, Ascarophis valentina and Cucullanus longicollis have shown a prevalence of 66%, 17% and 8% respectively, among all specimens of M. surmuletus analyzed.

Parasitism underground: determinants of helminth infections in two species of subterranean rodents (Octodontidae)

Parasitology ◽  
2010 ◽  
Vol 137 (10) ◽  
pp. 1569-1575 ◽  
Author(s):  
M. A. ROSSIN ◽  
A. I. MALIZIA ◽  
J. T. TIMI ◽  
R. POULIN
Keyword(s):  
Generalized Linear Models ◽  
Parasite Species ◽  
Linear Models ◽  
Nematode Species ◽  
Helminth Species ◽  
Subterranean Rodents ◽  
South American ◽  
Host Age ◽  
Wild Mammals ◽  
Helminth Infections

SUMMARYPatterns of infection among hosts in a population are often driven by intrinsic host features such as age or sex, as well as by positive or negative interactions between parasite species. We investigated helminth parasitism in 2 South American rodent species,Ctenomys australisandC. talarum(Octodontidae), to determine whether the unusual solitary and subterranean nature of these hosts would impact their patterns of infection. We applied generalized linear models to infection data on a total of 7 helminth species (1 inC. australisand 6 inC. talarum). Host age and season of capture influenced infection levels in some of the helminth species, but none were influenced by host body condition. InC. talarum, 4 pairs of helminth species showed significant associations, either asymmetrical or symmetrical, and with 3 of the 4 being positive; strong inter-specific facilitation appears likely in 1 case. Also, we found that female hosts, especially non-pregnant ones, harboured heavier infections of 2 nematode species than male hosts. This is in sharp contrast to the general male-bias reported for most studies of nematodes in wild mammals, and we develop explanations for these results based on the unusual ecology of these subterranean rodents.

scholarly journals Lung infection rates in two sympatric Tropiduridae lizard species by pentastomids and nematodes in northeastern Brazil

2009 ◽  
Vol 69 (3) ◽  
pp. 963-967 ◽  
Author(s):  
WO. Almeida ◽  
SC. Ribeiro ◽  
GG. Santana ◽  
WLS. Vieira ◽  
LA. Anjos ◽  
...  
Keyword(s):  
Pulmonary Infection ◽  
Parasite Species ◽  
First Record ◽  
Lung Infection ◽  
Neotropical Region ◽  
Northeastern Brazil ◽  
Mountain Range ◽  
Infection Rates ◽  
Lizard Species ◽  
The Family

We present data on pulmonary infection rates by parasites in the lizards Tropidurus hispidus Spix, 1825 and T. semitaeniatus (Spix, 1825) living sympatrically in the Chapada do Araripe mountain Range, northeastern Brazil. We found no parasite pulmonary infection in T. semitaeniatus. However, two pulmonary parasite species were found in the T. hispidus hosts, the pentastomid Raillietiella mottae Almeida, Freire and Lopes, 2008 and the nematode Rhabdias sp. Overall prevalence was 5%. Prevalence of R. mottae was 2.5% and corresponded to only one parasite on each infected host. Prevalence of Rhabdias sp. was 2.5% and the range of infection was 1-2 parasites per host. This represents the first record of Rhabdias infecting lizards of the family Tropiduridae in the Neotropical region. Furthermore, we present a comparison of parameters of infection by pulmonary parasites including some recent studies in Brazil.

scholarly journals Rates of pulmonary infection by pentastomids in lizards species from a restinga habitat in northeastern Brazil

2009 ◽  
Vol 69 (1) ◽  
pp. 197-200 ◽  
Author(s):  
WO. Almeida ◽  
GG. Santana ◽  
WLS. Vieira ◽  
IC. Wanderley ◽  
SC. Ribeiro
Keyword(s):  
Pulmonary Infection ◽  
Parasite Species ◽  
Sand Dunes ◽  
Infection Intensity ◽  
Single Species ◽  
Northeastern Brazil ◽  
Northern Coast ◽  
Coastal Sand Dunes ◽  
Lizard Species ◽  
Coastal Sand

Pulmonary parasitism by pentastomids was examined in two lizard species inhabiting an area of restinga vegetation (coastal sand dunes) situated in the municipality of Mataraca (6° 29' S and 34° 56' W), on the extreme northern coast of Paraíba State, Brazil. A total of 123 lizards were collected, being 75 specimens of Micrablepharus maximiliani (Gymnophtalmidae) and 48 specimens of Cnemidophorus ocellifer (Teiidae). Only a single species of Pentastomida (Raillietiella mottae) was found parasitizing three females M. maximiliani, with a prevalence of 4% and an average infection intensity of 2.3 ± 1.3 (range 1-5). The infection rate by pentastomids encountered in the present study was similar to that seen with other species of restinga lizards. Raillietiella mottae is a generalist parasite species that is probably transmitted by common and widely distributed insects making up part of the diet of many insectivorous lizard species from northeastern Brazil.

A new species of Dichelyne (Nematoda, Cucullanidae) parasitizing sciaenid fishes from off the South American Atlantic coast

2009 ◽  
Vol 54 (1) ◽  
Author(s):  
Juan Timi ◽  
Ana Lanfranchi ◽  
Luiz Tavares ◽  
José Luque
Keyword(s):  
New Species ◽  
Atlantic Coast ◽  
Length Distribution ◽  
Distribution Patterns ◽  
Nematode Species ◽  
Valid Species ◽  
South American ◽  
Type Specimens ◽  
Pacific Waters ◽  
A New Species

AbstractA new nematode species Dichelyne (Cucullanellus) sciaenidicola sp. nov. is described based on specimens collected from the Whitemouth croaker Micropogonias furnieri (Desmarest) and the Argentine croaker Umbrina canosai Berg, from coastal waters of Argentina and Brazil. These nematodes were firstly identified as D. (C.) elongatus (Törnquist, 1931), a commonly reported species from M. furnieri in South American Atlantic waters. However, other species of Dichelyne have so far been reported from this host in the same area, namely D. (C.) rodriguesi (Pinto, Fábio et Noronha, 1970), D. (C.) amaruincai (Freitas, Vicente et Ibañez, 1969) and D. (Dichelyne) micropogonii Pereira et Costa, 1996. A careful re-examination of these parasites, as well as of type specimens of all species reported from M. furnieri, revealed that these nematodes represented a new species. The new species is distinguished from most of its congeners by having papillae 5–7 and 9 forming a subventral line close to cloaca, this feature is shared with other 6 species [D. (C.) dichelyneformis (Szidat, 1950), D. (C.) fraseri (Baylis, 1929), D. (C.) abbreviatus (Rudolphi, 1819), D. (C.) adriaticus (Törnquist, 1931), D. (C.) minutus (Rudolphi, 1819) and D. (C.) mariajuliae Alarcos, Timi, Etchegoin et Sardella, 2006)], which are readily distinguished by their body size, spicules length, distribution patterns of other papillae and position of the excretory pore and deirids. Also, D. (C.) elongatus from Umbrina canariensis (Valenciennes) from West Africa is established as a new species Dichelyne (Cucullanellus) yvonnecampanae sp. nov.; D. (C.) amaruincai from Pacific waters is considered as a valid species, D. (D.) micropogonii is regarded as species inquirendae and D. (C.) rodriguesi is identified as Cucullanus sp.

The philometrid nematodePhilometroides acreanensis n. sp. from the stomach wall of the catfishPimelodus blochiiin north-western Brazil

2017 ◽  
Vol 92 (1) ◽  
pp. 109-115 ◽  
Author(s):  
P.H.O. Cavalcante ◽  
F. Moravec ◽  
C.P. Santos
Keyword(s):  
Body Length ◽  
Gravid Female ◽  
Drainage System ◽  
Nematode Species ◽  
Fish Host ◽  
The Body ◽  
Stomach Wall ◽  
Amazon River ◽  
Entire Body ◽  
South American

AbstractA new nematode species,Philometroides acreanensisn. sp. (Philometridae), is described from female specimens recovered from the stomach wall of the freshwater catfishPimelodus blochiiValenciennes (Pimelodidae) collected in the Acre River (Amazon River basin), Acre State, Brazil. Based on examination by light and scanning electron microscopy, the new species differs from the two other South American congeneric species mainly in the body length of the gravid female (240–280 mm), the length of the oesophagus (1.25 mm in holotype) representing 0.5% of the entire body length, the range of cuticular embossment, as well as the location in the host (stomach), order of the fish host (Siluriformes) and the geographical distribution (Amazon River drainage system). This is the third known species ofPhilometroidesYamaguti, 1935 reported from South America. A key to species ofPhilometroidesoccurring in the fish of America is provided.

scholarly journals Calibration of the maximum carboxylation velocity (Vcmax) using data mining techniques and ecophysiological data from the Brazilian semiarid region, for use in Dynamic Global Vegetation Models

2016 ◽  
Vol 76 (2) ◽  
pp. 341-351
Author(s):  
L. F. C. Rezende ◽  
B. C. Arenque-Musa ◽  
M. S. B. Moura ◽  
S. T. Aidar ◽  
C. Von Randow ◽  
...  
Keyword(s):  
Data Mining ◽  
Native Species ◽  
Classification And Regression Tree ◽  
Northeastern Brazil ◽  
Semiarid Region ◽  
Global Changes ◽  
Data Mining Techniques ◽  
Dynamic Global Vegetation Models ◽  
Vegetation Models ◽  
Global Vegetation

Abstract The semiarid region of northeastern Brazil, the Caatinga, is extremely important due to its biodiversity and endemism. Measurements of plant physiology are crucial to the calibration of Dynamic Global Vegetation Models (DGVMs) that are currently used to simulate the responses of vegetation in face of global changes. In a field work realized in an area of preserved Caatinga forest located in Petrolina, Pernambuco, measurements of carbon assimilation (in response to light and CO2) were performed on 11 individuals of Poincianella microphylla, a native species that is abundant in this region. These data were used to calibrate the maximum carboxylation velocity (Vcmax) used in the INLAND model. The calibration techniques used were Multiple Linear Regression (MLR), and data mining techniques as the Classification And Regression Tree (CART) and K-MEANS. The results were compared to the UNCALIBRATED model. It was found that simulated Gross Primary Productivity (GPP) reached 72% of observed GPP when using the calibrated Vcmax values, whereas the UNCALIBRATED approach accounted for 42% of observed GPP. Thus, this work shows the benefits of calibrating DGVMs using field ecophysiological measurements, especially in areas where field data is scarce or non-existent, such as in the Caatinga.

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