Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 22

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 2 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 2 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
1

Use of fish as intermediate hosts by helminth parasites: A comparative analysis

100%
Luque J. L., Poulin R.
Acta Parasitologica
|
2004
|
tom 49
|
nr 4
Parasite assemblages of marine fishes include an important number of larval stages of helminth parasite species that use fish as intermediate or as paratenic hosts. In previous comparative studies, larval helminths have typically been lumped with other endoparasites, and there has been therefore no study of the biodiversity and relative abundance of larval helminths and of the factors that may influence them. Here, we performed a comparative analysis across 50 species of teleost fishes from the coast of Brazil; we evaluated the effects of several host traits (body size, social behaviour, feeding habits, preference for benthic or pelagic habitats, depth range, ability to enter brackish waters and geographical distribution) on the richness and abundance of larval helminths. Among all the potential correlates of larval helminth infection investigated in this study, only two were significant when controlling for host phylogenetic influences: Host body length was correlated positively with larval helminth abundance, and fish species with a restricted geographical distribution (Atlantic coast of Brazil mainly) had greater larval helminth abundance than their relatives with a broader (whole Atlantic or cosmopolitan) distribution. Different results were obtained if no correction was made for host phylogeny: Using species values as independent statistical observations, some additional host features also appeared associated with larval helminth species richness or abundance. The results of these analyses indicate that fish phylogeny matters. Apparently, some lineages of fish harbour more larval helminths (more species and/or more individuals) than others merely because of historical reasons (i.e., ancient associations between certain parasite taxa and fish taxa) and not really because of their present ecological characteristics.
2

Redescriptions of two species of Lernanthropus [Copepoda, Siphonostomatoida, Lernanthropidae] parasitic on teleost marine fishes from Rio de Janeiro, Brazil

100%
Luque J. L., Paraguassu A. R.
Acta Parasitologica
|
2003
|
tom 48
|
nr 2
Two species of Lernanthropus de Blainville, 1822 parasitic on the sparid fish Pagrus pagrus L., 1758 and the sciaenid fish Umbrina canosai Berg, 1895, respectively, from the coastal zone of the State of Rio de Janeiro, Brazil, are redescribed and illustrated: L. caudatus Wilson, 1922, and L. leidyi Wilson, 1922. The male specimens of L. caudatus are described for the first time. There are new geographical and host records for these Lernanthropus species.
3

Ergasilus youngi sp.nov. [Copepoda, Poecilostomatoida, Ergasilidae] parasitic on Aspistor luniscutis [Actinopterygii, Ariidae] from off the State of Rio de Janeiro, Brazil

100%
Tavares L. E. R., Luque J. L.
Acta Parasitologica
|
2005
|
tom 50
|
nr 2
A new species of Ergasilus von Nordmann, 1832 (Copepoda, Ergasilidae) parasitic on the gills of sea catfish, Aspistor luniscutis (Valenciennes, 1840) (Ariidae) from the coastal zone of the state of Rio de Janeiro, Brazil is described and illustrated. The new species is characterized by the presence of 2-segmented first endopod with rosette-like array of blunt spinules, 3-seg- mented fourth endopod, first antennulary segment with single seta and not inflated cephalosome.
4

A new species of Ergasilus (Copepoda: Ergasilidae) from Geophagus altifrons and G. argyrostictus (Perciformes: Cichlidae) in the Brazilian Amazon

81%
Lopes Taborda N., Paschoal F., Luque J. L.
Acta Parasitologica
|
2016
|
tom 61
|
nr 3
5

First data on the parasites of Hoplias aimara (Characiformes): description of two new species of gill monogeneans (Dactylogyridae)

81%
Moreira J., Scholz T., Luque J. L.
Acta Parasitologica
|
2015
|
tom 60
|
nr 2
6

Redescription of the nematode parasites of lizards: Strongyluris oscari Travassos, 1923 (Heterakidae) from Brazil and Pharyngodon mamillatus (Linstow, 1897) (Pharyngodonidae) from Egypt

81%
Pereira F. B., Luque J. L., Tavares L. E. R.
Acta Parasitologica
|
2017
|
tom 62
|
nr 4
7

A new species of Kritskyia (Monogenea, Dactylogyridae) parasitic in the urinary bladder of Salminus brasiliensis (Characiformes) from the Pantanal wetlands, Brazil

81%
Cepeda P. B., Ceccarelli P. S., Luque J. L.
Acta Parasitologica
|
2011
|
tom 56
|
nr 3
A new species of Kritskyia Kohn, 1990 (Monogenea, Dactylogyridae, Ancyrocephalinae) is described from the urinary bladder of Salminus brasiliensis (Cuvier, 1816) (Characiformes, Characidae) from the Cuiabá River, the Pantanal wetlands, Brazil. The male copulatory apparatus of the new species differs from those of other species of the genus by the presence of a bipartite accessory piece (distally and proximally linked), one part grooved, serving as guide for distal portion of the MCO. Moreover, the vagina of the new species differs from those of congeners by possessing distal digitiform processes.
8

A new species of Colobomatus (Copepoda, Phylichthyidae) parasitic on Mullus argentinae (Perciformes, Mullidae) from South American Atlantic coast

81%
Pereira A. N., Timi J. T., Lanfranchi A. L., Luque J. L.
Acta Parasitologica
|
2012
|
tom 57
|
nr 3
A new species of Colobomatus Hesse, 1873 is described from pores of the cephalic sensory system and nostrils of Argentine goatfish, Mullus argentinae Hubbs et Marini, 1933 (Perciformes: Mullidae), living along the southwestern Atlantic coast. The fish were collected at different latitudes, stretching from the State of Rio de Janeiro in the north, through Santa Catarina, Rio Grande do Sul (Brazil) to of Mar del Plata (Argentina) in the south. The prevalence of the infection ranged from 42% through 84%. The new species look alike to two other species, parasites of mullids (C. steenstrupi and C. mulli) particularly in the body shape and the number, shape, and ornamentation of cephalic, thoracic, and genital processes. The new species, however, can be readily distinguished by having the central cephalic process shorter than lateral ones, the later being bilobed at tip forked, and a relatively larger abdomen. Furthermore, C. steenstrupi possesses relatively wider trunk processes with rounded tips, a short abdominal dorsal process, and attains a larger size (up to 3.6 mm). C. mulli also differs by having all body processes with forked tips, and relatively shorter sixth thoracic somite and abdominal segments 1–3. This is the third record of a species of Colobomatus in South American Atlantic waters.
9

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

81%
Timi J. T., Lanfranchi A. L., Tavares L. E. R., Luque J. L.
Acta Parasitologica
|
2009
|
tom 54
|
nr 1
45-52
A 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.
10

Morphological and phylogenetic characterization of a novel Unicauda species, infecting the kidney of Astyanax altiparanae (Teleostei: Characidae) in Brazil

81%
Vidal L. P., McIntosh D., Luque J. L.
Acta Parasitologica
|
2018
|
tom 63
|
nr 3
11

New species and records of Anacanthorus (Monogenea: Dactylogyridae) parasitizing serrasalmid fish (Characiformes) from Brazil, including molecular data

81%
Moreira J., Carneiro J. S., Ruz E. J. H., Luque J. L.
Acta Parasitologica
|
2019
|
tom 64
|
nr 3
12

Dactylogyrids (Monogenea) parasitic on cichlids from Northern Brazil, with description of two new species of Sciadicleithrum and new host and geographical records

81%
Paschoal F., Scholz T., Tavares-Dias M., Luque J. L.
Acta Parasitologica
|
2016
|
tom 61
|
nr 1
13

New morphological data and first description of gravid female of Cucullanus bagre Petter, 1974 (Seuratoidea: Cucullanidae) from Bagre bagre (Linnaeus, 1766) (Siluriformes: Ariidae) off Brazil

81%
Pereira F. B., Vieira F. M., Luque J. L.
Acta Parasitologica
|
2015
|
tom 60
|
nr 1
14

Three monogeneans parasitic on marine sciaenid fish from Peru including description of Cynoscionicola veranoi n. sp. (Microcotylidae), and redescription of C. americanus Tantalean, Martinez and Escalante, 1987 and Hargicotyle sciaenae Oliva and Luque, 1989 (Diclidophoridae)

81%
Chero J. D., Cruces C. L., Saez G., Luque J. L.
Acta Parasitologica
|
2017
|
tom 62
|
nr 3
15
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Similarity of the parasite communities of codlings Urophycis brasiliensis and U. mystacea (Gadiformes: Phycidae) from the Brazilian coastal zone

81%
Simoes R. O., Pereira A. N. S., Luque J. L.
Annals of Parasitology
|
2022
|
tom 68
|
nr 4
16

Larval Hysterothylacium sp. [Nematoda, Anisakidae] and trematode metacercariae from the amphipod Paracorophium excavatum [Corophiidae] in New Zealand

81%
Luque J. L., Bannock L. M., Lagrue C., Poulin R.
Acta Parasitologica
|
2007
|
tom 52
|
nr 2
Previously undescribed fourth-stage larvae of anisakid nematodes were found in the haemocoel of the amphipod Paracorophium excavatum (Thomson, 1884) (Corophiidae) in New Zealand. Morphological examination by light microscopy showed that the worms belonged to a species of Hysterothylacium Ward et Magath, 1917, based on several characters including the presence of interlabia, the location of the excretory pore posterior to the nerve ring, and the characteristics of the intestinal caecum and ventricular appendix. Interestingly, several male specimens showed precocious sexual development. This is the first record of fourth larval stage and precocious adult male specimens of Hysterothylacium in an invertebrate host, as well as the first record of anisakid larvae in New Zealand crustaceans. In addition, metacercariae of two trematode species, Coitocaecum parvum and Microphallus sp., are recorded for the first time from the amphipod P. excavatum.
17

Acanthochondria triangularis sp.nov. [Copepoda, Poecilostomatoida, Chondracanthidae] parasitic on Urophycis brasiliensis and U.mystaceus [Osteichthyes, Phycidae] from the Southern Brazilian coastal zone

81%
Alves D. R., Luque J. L., Paraguassu A. R.
Acta Parasitologica
|
2003
|
tom 48
|
nr 1
A new species of Acanthochondria (Copepoda, Poecilostomatoida, Chondracanthidae) parasitic on Brazilian codling Urophycis brasiliensis (Kaup, 1858) and the gulf hake U. mystaceus Ribeiro, 1903 from the Brazilian coastal zone, is described and illustrated. The new species of Acanthochondria differs from the other species of genus by a combination of characters that include shape of the head, shape of the trunk and size of the trunk posterior processes. This is the first record of Acanthochondria species from the South American Atlantic Ocean.
18

A new species of Sciadicleithrum [Monogenea, Dactylogyridae] parasitic on Geophagus brasiliensis [Perciformes, Cichlidae] from Guandu River, Southeastern Brazil

81%
De C. A. R., Tavares L. E. R., Luque J. L.
Acta Parasitologica
|
2008
|
tom 53
|
nr 3
Sciadicleithrum guanduensis sp. nov. is described from the gills of the cichlid fish Geophagus brasiliensis (Quoy et Gaimard, 1824) from Guandu River, Seropédica, Rio de Janeiro, Brazil. The new species differs from all congeners by the accessory piece of the male copulatory organ, which comprises a small, delicate sheath with articulated appearance, and by the presence of a large unique umbelliform membrane on the ventral bar.
19

Community structure of metazoan parasites of the yellow Cururu toad, Bufo ictericus [Anura, Bufonidae] from Rio de Janeiro, Brazil

81%
Luque J. L., Martins A. N., Tavares L. E. R.
Acta Parasitologica
|
2005
|
tom 50
|
nr 3
Thirty-two specimens of Bufo ictericus (Spix, 1824), 22 males and 10 females, collected in Miguel Pereira, State of Rio de Janeiro, Brazil, from April 2002 to August 2003, were examined for presence of metazoan parasites. Thirty-one (97%) specimens of B. ictericus were parasitized by one or more metazoan species. Sixteen species of parasites were collected: 2 digeneans, 13 nematodes, and 1 ixodid tick. The endoparasites represented 82.3% of the total number of parasite specimens collected. Bufo ictericus is a new host record for: Gorgoderina parvicava Travassos, 1922, Oswaldocruzia lopesi Freitas et Lent, 1938, O. mazzai Travassos, 1935, O. subauricularis (Rudolphi, 1819), Oxyascaris sp., Parapharyngodon alvarengai Freitas, 1957, Rhabdias elegans Gutierrez, 1945 and R. sphaerocephala Goodey, 1924. The digenean Mesocoelium monas (Rudolphi, 1819) was the most abundant species and the ixodid Amblyomma rotundatum (Koch, 1844) was the most prevalent in the parasite community of B. ictericus. The metazoan parasite species of B. ictericus showed the typical aggregated pattern of distribution of most parasite systems. There was no influence of host weight on parasite abundance and prevalence. Only one parasite species, M. monas, showed an influence of host sex on its abundance and prevalence. One pair of endoparasite species, O. lopesi and M. monas, showed an association in the infracommunities of B. ictericus. As in other parasite communities of Bufo species, the parasite community of B. ictericus was dominated by nematodes.
20

A new species of Heterocotyle (Monogenea: Monocotylidae), a gill parasite of the diamond stingray Hypanus dipterurus (Myliobatiformes: Dasyatidae) from the Peruvian coastal zone

71%
Chero J. D., Cruces C. L., Saez G., Portes Santos C., Luque J. L.
Acta Parasitologica
|
2020
|
tom 65
|
nr 2
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 2 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.