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1.
J Helminthol ; 94: e93, 2019 Oct 04.
Artigo em Inglês | MEDLINE | ID: mdl-31581954

RESUMO

We describe Hedruris dratini n. sp. (Nematoda, Hedruridae) from Hydromedusa tectifera and Phrynops hilarii in Argentina based on morphological and molecular characters. Also, we provide information about its life cycle. The new species differs from other species of the genus by possessing the excretory pore, nerve ring and deirids at equal distance from the anterior end. Additionally, H. dratini n. sp. has mammilated eggs and males possess nine pairs of caudal papillae. The subadults and adults of H. dratini n. sp and H. orestiae were characterized by sequencing the small subunit ribosomal DNA (18S). We present for the first time a life cycle of a species of Hedruris that includes an amphipod as intermediate host and a reptile as definitive host. Furthermore, we analysed the host and geographic distribution of all Hedruris species. Although the genus has a cosmopolitan distribution and parasitizes a great host diversity, the majority of species have a Gondwanian distribution, with amphibians being the preferred hosts.


Assuntos
Infecções por Spirurida/veterinária , Espirurídios/crescimento & desenvolvimento , Espirurídios/isolamento & purificação , Tartarugas/parasitologia , Anfípodes/parasitologia , Animais , Argentina , Feminino , Água Doce/parasitologia , Especificidade de Hospedeiro , Estágios do Ciclo de Vida , Masculino , Espirurídios/genética , Infecções por Spirurida/parasitologia
2.
J Helminthol ; 94: e87, 2019 Sep 13.
Artigo em Inglês | MEDLINE | ID: mdl-31514757

RESUMO

The supralittoral amphipod Traskorchestia ditmari (Derzhavin, 1923) was identified as the intermediate host for Antechiniella septentrionalis Ivanova, Dokuchaev & Spiridonov, 2019, a parasite of the tundra vole Microtus oeconomus and Skrjabinocerca sp. (both Spirurida: Acuariidae) in Magadan Oblast in north-eastern Russia. Joint infection by both larval spirurids was not observed. The infective stage of A. septentrionalis was the encysted larvae, while larvae of Skrjabinocerca sp. were free in the amphipod's coelom. The identity of A. septentrionalis was confirmed using cox1 mtDNA gene analysis, performed on adult stages from a tundra vole and on larvae from amphipods. Possible transmission routes of A. septentrionalis are discussed.


Assuntos
Anfípodes/parasitologia , Arvicolinae/parasitologia , Infecções por Spirurida/veterinária , Espirurídios/fisiologia , Animais , Feminino , Larva , Masculino , Federação Russa , Espirurídios/crescimento & desenvolvimento , Tundra
3.
Parasitol Res ; 118(10): 2819-2829, 2019 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-31463595

RESUMO

Procamallanus (Spirocamallanus) huacraensis infecting the catfish Trichomycterus spegazzinii from Escoipe River, Salta province (Argentina), is redescribed and genetically characterised for the first time, based on three genetic markers (nuclear 18S and 28S rRNA; cytochrome c oxidase subunit I [cox1] mtDNA). The phylogeny of Camallanidae was also discussed. Morphological evaluation of P. (S.) huacraensis using light and scanning electron microscopy revealed the previously undescribed features: location of deirids, accurate morphology of larvae (L1) and ovijector in females, as well as phasmids in males. Differences were found comparing the newly collected material and the type specimens, probably because the original description lacked detailing. Unfortunately, type specimens of P. (S.) huacraensis were no available for loan. The results of morphological and genetic analyses supported the validity of P. (S.) huacraensis. Inconsistencies regarding the taxonomic identification of species of Camallanidae in GenBank database were noted. Based on the current genetic database of Camallanidae, phylogenetic reconstructions using the 18S rRNA sequences were most consistent, due to the inclusion of higher number of taxa. Procamallanus (S.) huacraensis appeared as sister group of P. (S.) rarus, also isolated from a catfish in a neighbouring region. The order and habitat of hosts were also similar within some well-supported parasite lineages, but without common geographic origin. However, it is still premature to make definitive affirmations regarding the role of such features in the phylogenetic patterns of Camallanidae, given the scarcity of genetic data. The phylogenetic reconstructions also confirmed the artificiality of the morphology-based systematics of the family.


Assuntos
Doenças dos Peixes/parasitologia , Infecções por Spirurida/veterinária , Espirurídios/classificação , Espirurídios/isolamento & purificação , Animais , Argentina , Peixes-Gato/parasitologia , DNA de Helmintos/genética , Feminino , Masculino , Microscopia Eletrônica de Varredura , Filogenia , RNA Ribossômico 28S/genética , Rios/parasitologia , Espirurídios/genética , Espirurídios/fisiologia , Infecções por Spirurida/parasitologia
4.
J Wildl Dis ; 55(1): 149-152, 2019 01.
Artigo em Inglês | MEDLINE | ID: mdl-29999464

RESUMO

The nematodes Abbreviata antarctica von Linstow, 1899, and Abbreviata hastaspicula Jones, 1979 , are predominant spirurid nematodes in species of Varanus lizards in Australia. However, genetic knowledge of these two species of nematode is lacking. In this study, nematodes removed from Varanus gouldii were examined using integrated morphologic and molecular methods. We extracted DNA from A. hastaspicula and A. antarctica for PCR and sequencing. Specific 18S small subunit ribosomal RNA (rRNA) primers were designed on the basis of existing 18S rRNA sequences of Physalopterinae strains. Species of Abbreviata, which are closely similar morphologically, may be misidentified, especially the larvae of different species of Abbreviata that cannot be differentiated. The findings of this study will improve the accuracy in identification of A. hastaspicula and A. antarctica, both morphologically and molecularly.


Assuntos
Lagartos/parasitologia , Infecções por Spirurida/veterinária , Espirurídios/isolamento & purificação , Animais , Austrália/epidemiologia , Reação em Cadeia da Polimerase , RNA Ribossômico 18S/genética , Espirurídios/genética , Infecções por Spirurida/epidemiologia , Infecções por Spirurida/parasitologia
5.
J Helminthol ; 93(4): 494-503, 2019 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-29759087

RESUMO

Antechiniella septentrionalis n. sp. (Spirurida: Acuariidae) is described from the duodenum of a tundra vole, Microtus oeconomus (Pallas), collected in the Magadan region in the north-east part of Russia. It differs from A. suffodiax (Beveridge & Barker, 1975) and A. sertatum Smales, 1991 mainly in having a larger number of postcloacal papillae (5-6 pairs vs 4 pairs), a differently shaped left spicule, the disposition of precloacal papillae in two rows vs one, and oblong vs oval eggs. Other differences include the different disposition of ovaries in A. septentrionalis n. sp and A. suffodiax and the different structure of deirids in A. septentrionalis n. sp. and A. sertatum. The new species was characterized molecularly (partial sequences for 18S rRNA, 28S rRNA and cox1 mtDNA). The phylogenetic analyses performed showed the affinity of the new species to the members of the Acuariidae and other spirurid nematodes.


Assuntos
Arvicolinae/parasitologia , Enteropatias Parasitárias/veterinária , Filogenia , Espirurídios/genética , Espirurídios/isolamento & purificação , Animais , Feminino , Enteropatias Parasitárias/parasitologia , Federação Russa , Tundra
6.
J Zoo Wildl Med ; 49(4): 893-901, 2018 12 13.
Artigo em Inglês | MEDLINE | ID: mdl-30592931

RESUMO

Over a 2-yr period, four Goeldi's monkeys ( Callimico goeldii) died in a private zoo due to infections with the spirurid nematode Pterygodermatites nycticebi. Therapeutic measures with different anthelmintics were not successful. Due to the severe consequences caused by these infections, different actions were initiated, including sanitation measures and controlling of potential intermediate hosts (coprophagous arthropods). To identify possible intermediate hosts, arthropod species detected in the enclosure-parasite-free German cockroaches ( Blattella germanica), European earwigs ( Forficula auricularia), and rough woodlice ( Porcellio scaber)-were experimentally fed with feces of monkeys with patent P. nycticebi infections, resulting in established infections with third-stage larvae (L3) in roaches and earwigs. Furthermore, spiruroid L3 were detectable in 43% of the roaches and 30% of earwigs caught at the zoo. Polymerase chain reaction and sequence analysis of eggs, larval, and adult stages resulted in identical results, confirming the establishment of the parasite's life cycle in the zoo. This is the first documentation of the vector capacity of the European earwigs for P. nycticebi. As a measure of sanitation, a large part of the enclosure was emptied and cleaned. The Goeldi's monkeys were quarantined and treated with levamisole (7.5 mg/kg sc twice in intervals of 2 wk). Repeated coprologic examinations by zinc chloride flotation were undertaken. After the levamisole therapy, eggs were not found in the feces for 3 mo. However, shortly after resettling the monkeys into the sanitized enclosure, reshedding of small amounts of spirurid eggs was observed, whereupon deworming with levamisole was prescribed several times per year. The sanitation measures and the elimination of the intermediate hosts in a natural enclosure are presented as an example of the long-term controlling of the parasites.


Assuntos
Antinematódeos/uso terapêutico , Callimico , Levamisol/uso terapêutico , Doenças dos Macacos/prevenção & controle , Doenças dos Macacos/transmissão , Infecções por Spirurida/veterinária , Espirurídios/fisiologia , Animais , Animais de Zoológico , Blattellidae/crescimento & desenvolvimento , Blattellidae/parasitologia , Feminino , Insetos Vetores/crescimento & desenvolvimento , Insetos Vetores/parasitologia , Insetos/crescimento & desenvolvimento , Insetos/parasitologia , Larva/parasitologia , Masculino , Ninfa/parasitologia , Infecções por Spirurida/prevenção & controle , Infecções por Spirurida/transmissão , Suíça
7.
J Helminthol ; 94: e6, 2018 Oct 29.
Artigo em Inglês | MEDLINE | ID: mdl-30369337

RESUMO

This study focused on the spirurid nematode Mastophorus muris in water voles (Arvicola amphibius) trapped in three regions in southern Sweden during spring and fall 2013. The collection of water voles formed part of a larger project (EMIRO) on the cestode Echinococcus multilocularis in rodents. The voles' stomach contents were examined for the presence of M. muris. Prevalence, mean abundance and mean intensity of infection were calculated. A generalized linear model model was used to examine the effects of sex, functional group, season and region on the number of M. muris individuals in each vole. Forty-seven of 181 (26%) voles were infected with M. muris, with up to 74 worms each. The overall mean intensity (worms per infected vole) was 15 (95% CI 10-21), and abundance (mean number of worms in all voles) was 4 (95% CI 2-6). Model output indicated a significant effect of season and region with respect to abundance of nematode infection, which was independent of sex and functional group of the investigated host.


Assuntos
Arvicolinae/parasitologia , Doenças dos Roedores/parasitologia , Infecções por Spirurida/veterinária , Espirurídios/isolamento & purificação , Animais , Masculino , Estações do Ano , Espirurídios/classificação , Espirurídios/genética , Infecções por Spirurida/parasitologia , Suécia
8.
Parasitol Res ; 117(12): 3903-3907, 2018 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-30284021

RESUMO

The species Hedruris mucronifer Schuurmans Stekhoven, 1952 parasite of Telmatobius schreiteri from Tafí del Valle, Tucumán, Argentina is herein redescribed. The main morphological characters used for its identification are illustrated. The lectotype and paralectotype are designated, respectively. The specific epithet of the host is rectified.


Assuntos
Anuros/parasitologia , Espirurídios/anatomia & histologia , Espirurídios/classificação , Animais , Argentina , Feminino , Masculino
9.
Parasitol Res ; 117(10): 3355-3360, 2018 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-30196322

RESUMO

As part of the seasonal mosquito control activities in the city of Pécs (Baranya County, Hungary), a total of 1123 adult female mosquitoes belonging to 18 species (including the invasive species Aedes koreicus) were collected from human-inhabited areas, using CO2-baited traps, during two consecutive years. To survey the presence and prevalence of filarial parasites in these mosquitoes, we performed a molecular survey for filarial DNA, attempted by PCR using generic primers (COI), and followed by DNA sequencing. Filaroid nematode DNA was detected in 4% of investigated mosquito pools. Out of 410 pools, 9 pools of mosquitoes were positive for Dirofilaria repens (Aedes vexans, Aedes koreicus, Coquillettidia richiardii), and/or Dirofilaria immitis (Ae. vexans, Cq. richiardii), and further 8 pools were positive for Setaria tundra (Ae. vexans, Cq. richiardii). Our study provides novel insight for prevalence of filaroid nematodes in mosquitoes occurring in close proximity to humans, thereby highlights the possible human and veterinary health importance of these mosquito species, including the recently introduced invasive mosquito Ae. koreicus.


Assuntos
Dirofilariose/parasitologia , Mosquitos Vetores/parasitologia , Espirurídios/isolamento & purificação , Aedes/parasitologia , Animais , Dirofilaria immitis/classificação , Dirofilaria immitis/genética , Dirofilaria immitis/isolamento & purificação , Dirofilaria immitis/fisiologia , Dirofilaria repens/classificação , Dirofilaria repens/genética , Dirofilaria repens/isolamento & purificação , Dirofilaria repens/fisiologia , Dirofilariose/epidemiologia , Dirofilariose/transmissão , Ecossistema , Feminino , Humanos , Hungria/epidemiologia , Masculino , Controle de Mosquitos , Mosquitos Vetores/classificação , Mosquitos Vetores/fisiologia , Setaria (Nematoide)/classificação , Setaria (Nematoide)/genética , Setaria (Nematoide)/isolamento & purificação , Setaria (Nematoide)/fisiologia , Espirurídios/classificação , Espirurídios/genética , Espirurídios/fisiologia , Saúde da População Urbana
10.
Parasitol Res ; 117(12): 3851-3856, 2018 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-30244427

RESUMO

Serratospiculiasis is a parasitic disease caused by filariid nematodes of the genus Serratospiculum that parasitise the air sacs of various species of falcons, bald eagles and Cooper's hawks around the world. An infection with Serratospiculum was recently confirmed in a nonspecific host, the great tit, in Slovakia. Parasitic material from this host was fixed for molecular analysis. Nematode found in the air sacs from a captive-bred gyrfalcon was also stored. Analysis of small subunit (18S) ribosomal DNA (18S rDNA) gene indicated that sequences from Serratospiculum sp. and Serratospiculoides amaculata were closely related to a reference sequence from Serratospiculum tendo, in agreement with morphology. This study is the first to generate molecular data and infer the phylogenetic position of S. amaculata as the first representative of the genus Serratospiculoides.


Assuntos
Sacos Aéreos/parasitologia , Doenças das Aves/parasitologia , Falconiformes/parasitologia , Infecções por Spirurida/veterinária , Espirurídios/classificação , Espirurídios/genética , Animais , Cruzamento , DNA Ribossômico , Feminino , Filogenia , RNA Ribossômico 18S/genética , Eslováquia , Espirurídios/isolamento & purificação , Infecções por Spirurida/parasitologia
11.
Acta Parasitol ; 63(3): 595-604, 2018 Sep 25.
Artigo em Inglês | MEDLINE | ID: mdl-29975640

RESUMO

This study describes the morphology of Procamallanus (Spirocamallanus) pintoi (Kohn et Fernandes, 1988), isolated from the intestine of Corydoras micracanthus Regan, 1912 and C. paleatus (Jenyns, 1842) (both Callichthyidae, Siluriformes) from Bermejo and Juramento River basins, respectively, province of Salta, Argentina. This is the first record of P. (S.) pintoi in C. micracanthus from Northwestern Argentina. The light and scanning electron microscopy observations of P. (S.) pintoi, revealed a few previously unreported morphological details of the cephalic region, vulva and caudal region of males. In addition, morphometric variability was observed in, mainly body size, glandular oesophagus length and position of the vulva between present specimens and those described in previous studies. A key to the species of Procamallanus (Spirocamallanus) from the Neotropical Realm is proposed.


Assuntos
Peixes-Gato/parasitologia , Doenças dos Peixes/parasitologia , Infecções por Spirurida/veterinária , Espirurídios/classificação , Animais , Argentina , Tamanho Corporal , Feminino , Intestinos/parasitologia , Masculino , Microscopia Eletrônica de Varredura/veterinária , Rios , Espirurídios/genética , Infecções por Spirurida/parasitologia
12.
Rev Bras Parasitol Vet ; 27(1): 8-12, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29513781

RESUMO

Acuariidae nematodes are normally found in the digestive tract of aquatic birds, including Procellariiformes. Were examined Calonectris borealis (n = 4), Diomedea exulans (n = 1), Macronectes giganteus (n = 8), Thalassarche chlororhynchos (n = 5), Thalassarche melanophrys (n = 15), Procellaria aequinoctialis (n = 4), Puffinus gravis (n = 2) and Puffinus puffinus (n = 6), collected on the southern coast of RS, Brazil. A total of 16 birds (35.5%) were parasitized by two species of Acuariidae. Stegophorus diomedeae and Seuratia shipleyi were identified, with prevalences of 26.1% and 21.7%, respectively. Few studies on nematodes in Procellariiformes have been conducted. Here, the acuariids Seuratia shipleyi in Calonectris borealis and Procellaria aequinoctialis and Stegophorus diomedeae in Diomedea exulans, Procellaria aequinoctialis and Thalassarche chlororhynchos were reported for the first time.


Assuntos
Doenças das Aves/epidemiologia , Doenças das Aves/parasitologia , Aves/parasitologia , Infecções por Spirurida/veterinária , Espirurídios/isolamento & purificação , Animais , Brasil/epidemiologia , Infecções por Spirurida/epidemiologia
13.
Dis Aquat Organ ; 127(3): 163-175, 2018 03 05.
Artigo em Inglês | MEDLINE | ID: mdl-29516856

RESUMO

The giant (>3 m) parasitic nematode Crassicauda magna infects kogiid whales, although only 3 studies to date have provided detailed descriptions of these worms, all based upon fragmented specimens. These fragments were found within the neck region of kogiids, an unusual anatomic site for this genus of parasites. C. magna is a species-specific parasite among kogiids, infecting only pygmy sperm whales Kogia breviceps, and with a primarily cervico-thoracic distribution. To date, however, the pattern of habitat use within the host and transmission path of this parasite remain unknown. We used detailed dissections (n = 12), histological examination of host tissues (n = 2), and scanning electron microscopy of excised nematodes (n = 7) to enhance our understanding of this host-parasite relationship. Results revealed that a critical habitat for the parasite is an exocrine gland in the whale's ventral cervical region. C. magna male and female tails were found intertwined within the glandular lumen, and eggs were observed within its presumed secretion, illuminating the transmission path out of the host. The cephalic ends of these worms were often meters away (curvilinearly), embedded deeply within epaxial muscle. A single worm's complete, tortuous 312 cm course, from the gland to its termination in the contralateral epaxial muscle, is described for the first time. This study also provides the first scanning electron micrographs of C. magna, which illustrate taxonomically important features of the heads and tails of both male and female worms.


Assuntos
Infecções por Spirurida/veterinária , Espirurídios/classificação , Espirurídios/fisiologia , Baleias/parasitologia , Animais , Glândulas Exócrinas/parasitologia , Feminino , Masculino , Pescoço/parasitologia , Infecções por Spirurida/parasitologia , Infecções por Spirurida/patologia
14.
Parasit Vectors ; 11(1): 127, 2018 03 05.
Artigo em Inglês | MEDLINE | ID: mdl-29506575

RESUMO

BACKGROUND: Dogs are the definitive hosts of Spirocerca lupi. Spirocercosis is treated by prolonged avermectin administration by injection or daily oral doses. In this prospective, double-blinded, placebo-controlled, clinical trial, the efficacy of imidacloprid and moxidectin spot-on formulation (Advocate®) was compared to injectable doramectin (Dectomax®). Dogs diagnosed with benign esophageal spirocercosis were divided randomly into doramectin (400 µg/kg IM) or moxidectin and imidacloprid spot-on (2.5-6.25 mg/kg and 10-25 mg/kg, respectively) groups and treated weekly for 12 consecutive weeks. Dogs were followed for 20 weeks by physical examination, owners' questionnaire, blood work, fecal floatation, PCR and endoscopy. RESULTS: All the doramectin group dogs (n = 10) completed the treatment and follow-up, and the disease had completely resolved in all by week 12. Of the Advocate® group (n = 10), four had complete resolution at week 12, four had partial resolution, one dog did not respond to treatment, and one dog was switched to the doramectin protocol on week 5 due to persistent severe clinical signs. PCR analysis was more sensitive in detecting S. lupi eggs compared to fecal floatation. Discrepancies were detected on 22 occasions, of which on 20 occasions, the PCR was positive while fecal floatation was negative, and only on two occasions the PCR results were negative while fecal flotation was positive. CONCLUSIONS: The present results indicate that weekly Advocate® spot-on administration may be effective for treating benign esophageal spirocercosis, but is less effective than the currently used injectable doramectin therapy at the dose and duration used herein.


Assuntos
Doenças do Cão/tratamento farmacológico , Esôfago/parasitologia , Macrolídeos/uso terapêutico , Neonicotinoides/uso terapêutico , Nitrocompostos/uso terapêutico , Infecções por Spirurida/veterinária , Animais , Doenças do Cão/parasitologia , Cães , Método Duplo-Cego , Fezes/parasitologia , Feminino , Macrolídeos/administração & dosagem , Masculino , Neonicotinoides/administração & dosagem , Nitrocompostos/administração & dosagem , Placebos , Estudos Prospectivos , Espirurídios/efeitos dos fármacos , Espirurídios/genética , Espirurídios/isolamento & purificação , Infecções por Spirurida/tratamento farmacológico , Infecções por Spirurida/parasitologia
15.
J Helminthol ; 92(4): 504-513, 2018 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-28758604

RESUMO

Procyrnea choique n. sp. is described from the lesser rhea, Rhea pennata d´Orbigny (Aves: Rheidae), from the Protected Natural Area Península Valdés, Chubut province, Argentina. The new species resembles P. ficheuri, P. murrayi, P. excisiformis, P. dollfusi, P. haliasturi, P. anterovulvata, P. graculae, P. brevicaudata, P. uncinipenis, P. javaensis, P. ameerae, P. ornata, P. aegotheles, P. spiralis, P. ruschii and P. aptera, mainly in the absence of lateral alae; but differs from its congeners by having a left spicule without barbs, the position of the vulva which is post-equatorial, the absence of lateral ridges, absent median precloacal papilla, asymmetrical caudal alae, males more than 6 mm long, left spicule 1 mm long and spicule ratio 1:3. Our results extend the taxonomy of Procyrnea Chabaud, 1958 and comprise the first report of a habronematid from R. pennata. A key to species of Procyrnea is presented.


Assuntos
Doenças das Aves/parasitologia , Reiformes/parasitologia , Infecções por Spirurida/veterinária , Espirurídios/isolamento & purificação , Animais , Argentina , Feminino , Masculino , Espirurídios/genética , Espirurídios/crescimento & desenvolvimento , Espirurídios/fisiologia , Infecções por Spirurida/parasitologia
16.
Artigo em Inglês | MEDLINE | ID: mdl-28783030

RESUMO

Three adult nematode specimens, all ovigerous females belonging to the family Cystidicolidae Skryabin, 1946, were found for the first time in the subcutaneous tissue around the eye of the captive porcupinefish Diodon nichthemerus Cuvier at a public aquarium in Osaka, Japan. Because no male was available, these could not be identified to the genus and species. This case highlights the risk of parasitism in aquaculture puffer fish, as these may ingest small shrimp, which probably act as intermediate hosts for the nematode.


Assuntos
Doenças dos Peixes/parasitologia , Infecções por Spirurida/veterinária , Espirurídios/classificação , Tetraodontiformes/parasitologia , Animais , Olho/parasitologia , Feminino , Japão , Espirurídios/anatomia & histologia , Infecções por Spirurida/parasitologia , Tela Subcutânea/parasitologia
17.
J Parasitol ; 103(6): 791-794, 2017 12.
Artigo em Inglês | MEDLINE | ID: mdl-28783428

RESUMO

Carnivorous mammals are a trophic guild with an important role in the dissemination of parasite infective stages (larvae, eggs, cysts, and oocysts). In the present study, new samples of coprolites attributed to carnivorous mammals, obtained from 2 archaeological caves, were analyzed for the presence of parasites with the aim to increase the knowledge about parasites in rockshelters that could have spread to humans and other mammals. To this purpose, fragments of 3 coprolites from Cerro Casa de Piedra, cave 5 and cave 7, were examined. Coprolites were rehydrated in aqueous trisodium phosphate and processed by spontaneous sedimentation. High parasite richness was observed and new parasite species for archaeological contexts were found. The parasitological findings in Puma concolor coprolites associated with caves suggest the importance of these carnivores in the dissemination of parasites in areas with high re-use of space and steady conditions of temperature, humidity, and radiation.


Assuntos
Carnívoros/parasitologia , Cavernas/parasitologia , Fezes/parasitologia , Fósseis/parasitologia , Zoonoses/transmissão , Animais , Argentina , Camelídeos Americanos/parasitologia , Dieta Paleolítica , Echinococcus/isolamento & purificação , Eimeria/isolamento & purificação , Fósseis/história , História Antiga , Humanos , Isospora/isolamento & purificação , Nematoides/classificação , Nematoides/isolamento & purificação , Nematodirus/isolamento & purificação , Puma/parasitologia , Espirurídios/isolamento & purificação , Estrongilídios/isolamento & purificação , Taenia/isolamento & purificação , Zoonoses/história , Zoonoses/parasitologia
18.
Acta Parasitol ; 62(2): 471-476, 2017 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-28426406

RESUMO

Proleptus obtusus Dujardin, 1845 is the most common parasite infecting the gut of the lesser spotted dogfish (Scyliorhinus canicula, Linnaeus). This nematode is trophically transmitted from an intermediate crustacean host to the definitive elasmobranch host. Sexual and age-related differences in habitat occupancy and feeding behaviour of the lesser spotted dogfish make this parasite-host dyad ideal for testing which aspects of host biology influence parasite transmission. Here, the relationship between P. obtusus burden and host condition, sex and age were investigated in lesser spotted dogfish captured in the Northeast Atlantic. Prevalence of P. obtusus was of 94.8% with a mean abundance of 23.3 worms per host. Our results indicate that parasite burden is best explained by the interaction between ontogenetic differences in foraging behaviour of the lesser spotted dogfish and seasonal differences in prey availability.


Assuntos
Cação (Peixe)/parasitologia , Comportamento Alimentar , Doenças dos Peixes/parasitologia , Estações do Ano , Infecções por Spirurida/veterinária , Espirurídios/isolamento & purificação , Animais , Gadus morhua , Infecções por Spirurida/parasitologia
19.
Syst Parasitol ; 94(2): 201-214, 2017 02.
Artigo em Inglês | MEDLINE | ID: mdl-28130669

RESUMO

Acuaria europaea n. sp. is described from one Dendrocopos syriacus (Hemprich & Ehrenberg) (Piciformes: Picidae) (type-host) and three Oriolus oriolus (L.) (Passeriformes: Oriolidae) in Bulgaria (type-locality) and France. The new species is characterised by cordons extending slightly beyond the level of the anterior end of the glandular oesophagus, left spicule 297 µm long, right spicule 155 µm long, protruding vulvar region and strongly ventrally curved female tail. The male (holotype) and the female (allotype) of A. parorioli Chabaud & Petter, 1961 from O. oriolus are regarded as not being conspecific based on the differing morphology of their cordons; the female is identified as A. europaea n. sp. The type-material of Acuaria attenuata (Rudolphi, 1819) is redescribed. The species is characterised by a small and delicate body, cordons extending beyond the oesophago-intestinal junction and similar spicules in size and shape, 140 µm long. The only type-material of Acuaria anthuris (Rudolphi, 1819) available for examination consists of a male and a female (syntypes) from O. oriolus. The two specimens differ from one another by the relative lengths of their cordons and we consider them as belonging to two species. However, both type-specimens differ in their much shorter cordons from the species of Acuaria parasitising Corvidae. The present study reveals that the original description of A. anthuris has been based on heterogeneous material.


Assuntos
Passeriformes/parasitologia , Espirurídios/classificação , Animais , Europa (Continente) , Feminino , Masculino , Especificidade da Espécie , Espirurídios/anatomia & histologia
20.
Parasitol Res ; 116(1): 293-297, 2017 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-27796561

RESUMO

Thubunaea eleodori sp. nov. is described from the stomach of Liolaemus eleodori (Sauria: Liolaemidae) from San Guillermo National Park, Province of San Juan, Argentina. T. eleodori is most similar to those species lacking spicules, T. cnemidophorus, T. fitsimonsi, T. parkeri, T. schukurovi, and T. smogorzhewskii. T. eleodori is separated from these species based on the papilla pattern. T. eleodori has 12 pedunculate papillae and 14 sessile papillae, T. smogorzhewskii lacks pedunculate papillae, T. fitsimonsi and T. parkeri lack sessile papillae, and T. cnemidophorus has14-16 pedunculate papillae and 12 sessile papillae. T. eleodori represents the first member of the genus to be reported from Argentina.


Assuntos
Lagartos/parasitologia , Infecções por Nematoides/veterinária , Infecções por Spirurida/veterinária , Espirurídios/isolamento & purificação , Animais , Argentina , Feminino , Masculino , Infecções por Nematoides/parasitologia , Parques Recreativos , Espirurídios/classificação , Espirurídios/genética , Infecções por Spirurida/parasitologia
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