Investigations of peritoneal and intestinal infections of adult hookworms (Uncinaria spp.) in northern fur seal (Callorhinus ursinus) and California sea lion (Zalophus californianus) pups on San Miguel Island, California (2003).


:The peritoneal cavity (PNC) and intestine of northern fur seal (Callorhinus ursinus) pups and California sea lion (Zalophus californianus) pups that died in late July and early August, 2003, on San Miguel Island, California, were examined for hookworms. Prevalence and morphometric studies were done with the hookworms in addition to molecular characterization. Based on this and previous molecular studies, hookworms from fur seals are designated as Uncinaria lucasi and the species from sea lions as Uncinaria species A. Adult hookworms were found in the PNC of 35 of 57 (61.4%) fur seal pups and of 13 of 104 (12.5%) sea lion pups. The number of hookworms located in the PNC ranged from 1 to 33 (median = 3) for the infected fur seal pups and 1 to 16 (median = 2) for the infected sea lion pups. In addition to the PNC, intestines of 43 fur seal and 32 sea lion pups were examined. All of these pups were positive for adult hookworms. The worms were counted from all but one of the sea lion pups. Numbers of these parasites in the intestine varied from 3 to 2,344 (median = 931) for the fur seal pups and 39 to 2,766 (median = 643) for the sea lion pups. Sea lion pups with peritoneal infections had higher intensity infections in the intestines than did pups without peritoneal infections, lending some support for the hypothesis that peritoneal infections result from high-intensity infections of adult worms. There was no difference in intestinal infection intensities between fur seal pups with and without peritoneal infections. Female adult hookworms in the intestines of both host species were significantly larger than males, and sea lion hookworms were larger than those in fur seals. Worms in the intestine also were larger than worms found in the PNC. Gene sequencing and (RFLP) analysis of (PCR) amplified (ITS) ribosomal DNA were used to diagnose the species of 172 hookworms recovered from the PNC and intestine of 18 C. ursinus and seven Z. californianus hosts. These molecular data revealed that U. lucasi (hookworm of C. ursinus) and Uncinaria species A (of Z. californianus) infrequently mature in the intestine of the opposite host species in California rookeries. However, there is no support from molecular data for the hypothesis that cross-infection with "the wrong" Uncinaria species is a contributing factor in these cases of host peritonitis. The major significance of this research is the unusual finding of adult hookworms in the PNC of so many dead pups. No obvious explanation for this occurrence could be determined. Further research, like in the present study, should help understand and monitor the apparent ever changing role of hookworm disease in the health of northern fur seal and California sea lion pups on SMI.


Parasitol Res


Parasitology research


Lyons ET,Delong RL,Nadler SA,Laake JL,Orr AJ,Delong BL,Pagan C




Has Abstract


2011-09-01 00:00:00












  • Molecular detection of Anaplasma platys, Anaplasma phagocytophilum and Wolbachia sp. but not Ehrlichia canis in Croatian dogs.

    abstract::The bacteria Anaplasma platys, Anaplasma phagocytophilum and Ehrlichia canis are tick-borne agents that cause canine vector-borne disease. The prevalence of these pathogens in South Eastern Europe is unknown with the exception of an isolated case of A. platys detected in a dog imported into Germany from Croatia. To ga...

    journal_title:Parasitology research

    pub_type: 杂志文章


    authors: Huber D,Reil I,Duvnjak S,Jurković D,Lukačević D,Pilat M,Beck A,Mihaljević Ž,Vojta L,Polkinghorne A,Beck R

    更新日期:2017-11-01 00:00:00

  • In vitro effects of gliotoxin, a natural proteasome inhibitor, on the infectivity and proteolytic activity of Toxoplasma gondii.

    abstract::We examined the in vitro effect of increasing gliotoxin concentrations on the infectivity of Toxoplasma gondii for NIH-3T3 murine fibroblasts and on Toxoplasma chymotrypsin-like activity, which is specific to the proteasome. Parasite penetration of host cells was not modified by a high gliotoxin concentration (1 micro...

    journal_title:Parasitology research

    pub_type: 杂志文章


    authors: Paugam A,Creuzet C,Dupouy-Camet J,Roisin P

    更新日期:2002-08-01 00:00:00

  • Larvicidal potential of silver nanoparticles synthesized from Leucas aspera leaf extracts against dengue vector Aedes aegypti.

    abstract::Vector-borne diseases caused by mosquitoes are one of the major economic and health problems in many countries. The Aedes aegypti mosquito is a vector of several diseases in humans like yellow fever and dengue. Vector control methods involving the use of chemical insecticides are becoming less effective due to develop...

    journal_title:Parasitology research

    pub_type: 杂志文章


    authors: Suganya G,Karthi S,Shivakumar MS

    更新日期:2014-05-01 00:00:00

  • Exsheathment and midgut invasion of nocturnally subperiodic Brugia malayi microfilariae in a refractory vector, Aedes aegypti (Thailand strain).

    abstract::Exsheathment and midgut invasion of nocturnally subperiodic Brugia malayi microfilariae were analyzed using light and scanning electron microscopy in a refractory vector, Aedes aegypti (Thailand strain). Results showed that exsheathed microfilariae represented only approximately 1% of the total microfilaria midguts di...

    journal_title:Parasitology research

    pub_type: 杂志文章


    authors: Intakhan N,Jariyapan N,Sor-Suwan S,Phattanawiboon B,Taai K,Chanmol W,Saeung A,Choochote W,Bates PA

    更新日期:2014-11-01 00:00:00

  • Differences in protein profiles of the isolates of Entamoeba histolytica and E. dispar by surface-enhanced laser desorption ionization time-of-flight mass spectrometry (SELDI-TOF MS) ProteinChip assays.

    abstract::Surface-enhanced laser desorption ionization time of flight mass spectrometry (SELDI-TOF MS) ProteinChip assays with weak cationic exchange chips were used for protein profiling of different isolates of Entamoeba histolytica and E. dispar. When SELDI-TOF MS spectra of cell lysates from E. histolytica strain HM-1:IMSS ...

    journal_title:Parasitology research

    pub_type: 杂志文章


    authors: Makioka A,Kumagai M,Kobayashi S,Takeuchi T

    更新日期:2007-12-01 00:00:00

  • Assessment of productivity of Culex spp. larvae (Diptera: Culicidae) in urban storm water catch basin system in Wrocław (SW Poland).

    abstract::In urban environments, catch basins serve as major developmental and resting sites for anthropophilic and zoophilic mosquitoes. However, the use of this habitat is inconsistent, with abundance of larvae varying significantly across catch basins at a fine spatial scale. During seasonal summer investigations on mosquito...

    journal_title:Parasitology research

    pub_type: 杂志文章


    authors: Rydzanicz K,Jawień P,Lonc E,Modelska M

    更新日期:2016-04-01 00:00:00

  • First record of Chilodonella piscicola (Ciliophora: Chilodonellidae) from two endangered fishes, Schizothorax o'connori and Oxygymnocypris stewartii in Tibet.

    abstract::Schizothorax o'connori and Oxygymnocypris stewartii are two endangered endemic Tibetan fishes that thrive in the Lhasa River at an average altitude over 4000 m. During artificial reproduction of endemic Tibetan fishes, the juvenile fish of S. o'connori and O. stewartii experienced mass mortality event. The causative a...

    journal_title:Parasitology research

    pub_type: 杂志文章


    authors: Deng Q,Guo Q,Zhai Y,Wang Z,Gu Z

    更新日期:2015-08-01 00:00:00

  • How does supplementary feeding affect endoparasite infection in wild boar?

    abstract::Supplementary feeding is widely used in game management but may aid the transmission of parasites. Firstly, feeding sites attract animals and may be regarded as high-risk areas for parasite transmission. Secondly, high host population densities resulting from and supported by supplementary feeding, as well as accumula...

    journal_title:Parasitology research

    pub_type: 杂志文章


    authors: Oja R,Velström K,Moks E,Jokelainen P,Lassen B

    更新日期:2017-08-01 00:00:00

  • Kinetics of Cryptosporidium parvum-specific cytokine responses in healing and nonhealing murine models of C. parvum infection.

    abstract::Susceptibility or resistance to infection with Cryptosporidium parvum correlates with the ability of mice to produce characteristic panels of cytokines in response to infection. Both adult healing and nonhealing mouse models of cryptosporidiosis were used to study the cell-mediated immune response during the course of...

    journal_title:Parasitology research

    pub_type: 杂志文章


    authors: Singh I,Theodos C,Li W,Tzipori S

    更新日期:2005-10-01 00:00:00

  • In vitro antileishmanial activity of resveratrol and its hydroxylated analogues against Leishmania major promastigotes and amastigotes.

    abstract::Resveratrol, a natural phytoalexin found mainly in grapes, possesses a variety of beneficial activities including anticancer, antimicrobial and antiviral. However, there is no information about its effects on kinetoplastid parasites such as Leishmania. Leishmania is a human pathogen responsible for a spectrum of disea...

    journal_title:Parasitology research

    pub_type: 杂志文章


    authors: Kedzierski L,Curtis JM,Kaminska M,Jodynis-Liebert J,Murias M

    更新日期:2007-12-01 00:00:00

  • Identification and morphologic and molecular characterization of Cyclospora macacae n. sp. from rhesus monkeys in China.

    abstract::Cyclospora spp. in nonhuman primates are most closely related to Cyclospora cayetanensis, an emerging human pathogen causing outbreaks of cyclosporiasis in North America. Studies thus far indicate the possible existence of host specificity in Cyclospora spp. In this study, 411 fecal specimens from free-range rhesus mo...

    journal_title:Parasitology research

    pub_type: 杂志文章


    authors: Li N,Ye J,Arrowood MJ,Ma J,Wang L,Xu H,Feng Y,Xiao L

    更新日期:2015-05-01 00:00:00

  • Coxiella symbionts are widespread into hard ticks.

    abstract::Ticks are blood-feeding arthropods and can harbor several bacteria, including the worldwide zoonotic disease Q-fever agent Coxiella burnetii. Recent studies have reported a distinct group of Coxiella mostly associated with Ixodidae ticks, including the primary endosymbionts of Amblyomma americanum. In the present work...

    journal_title:Parasitology research

    pub_type: 杂志文章


    authors: Machado-Ferreira E,Vizzoni VF,Balsemão-Pires E,Moerbeck L,Gazeta GS,Piesman J,Voloch CM,Soares CA

    更新日期:2016-12-01 00:00:00

  • Three actinosporean types (Myxozoa) from the oligochaete Branchiura sowerbyi in China.

    abstract::Three actinosporean types--raabeia, aurantiactinomyxon, and guyenotia--from the oligochaete Branchiura sowerbyi Beddard collected from a crucian carp (Carassius auratus gibelio) pond are described in this report. Compared with the actinospores described previously, the raabeia type presents similar spore shape with th...

    journal_title:Parasitology research

    pub_type: 杂志文章


    authors: Xi BW,Zhang JY,Xie J,Pan LK,Xu P,Ge XP

    更新日期:2013-04-01 00:00:00

  • The effect of the intestinal worms and migrating L1 larvae of Trichinella spiralis on the production of antiparasitic IgE antibodies.

    abstract::The effect of the adult worms and migrating L1 larvae of Trichinella spiralis on the production of specific IgE antibodies was determined in BCF1 mice. To achieve this, we combined the effect of two anthelminthics: thiabendazole, to produce chemosterilization of adult females, and napthalophos, to expel adult worms fr...

    journal_title:Parasitology research

    pub_type: 杂志文章


    authors: Santamarina MT,Leiro J,Garrido MJ,Sanmartin Durán ML,Ubeira FM

    更新日期:1988-01-01 00:00:00

  • First detection and molecular identification of Entamoeba bovis from Japanese cattle.

    abstract::Thus far, Entamoeba species have been classified based on morphology such as the number of nuclei in mature cysts and their hosts. Using recently developed molecular tools, ruminant Entamoeba spp. are currently classified into four species/genotypes: E. bovis and Entamoeba ribosomal lineages (RL) 1, 2, and 4. However,...

    journal_title:Parasitology research

    pub_type: 杂志文章


    authors: Matsubayashi M,Matsuura Y,Nukata S,Daizi Y,Shibahara T,Teramoto I,Matsuo T,Uni S,Hatta T,Kaneko A,Tsuji N,Sasai K

    更新日期:2018-01-01 00:00:00

  • Diethylaminoethyl (DEAE) binding fraction from Taenia solium metacestode improves the neurocysticercosis serodiagnosis.

    abstract::Neurocysticercosis (NC) is one of the most important diseases caused by parasites affecting the central nervous system. We fractionated by ion-exchange chromatography using diethylaminoethyl (DEAE)-sepharose resin the total saline extract (S) from Taenia solium metacestodes and evaluated obtained fractions (DEAE S1 an...

    journal_title:Parasitology research

    pub_type: 杂志文章


    authors: Ribeiro Vda S,Nunes Dda S,Gonzaga HT,da Cunha-Junior JP,Costa-Cruz JM

    更新日期:2014-07-01 00:00:00

  • In vitro uptake and autoradiographic localization of tritiated gossypol in Taenia taeniaeformis metacestodes.

    abstract::Gossypol, a natural polyphenolic compound, induces growth-inhibitory and antiparasitic effects in Taenia taeniaeformis metacestodes in vivo and in vitro. We investigated the uptake and localization of [3H]-gossypol in this parasite. Metacestodes were incubated in 10(-5) M [3H]-gossypol at 37 degrees C. Parasites stead...

    journal_title:Parasitology research

    pub_type: 杂志文章


    authors: Kulp SK,Rikihisa Y,Lin YC,Moh PP,Li PK,Gu Y

    更新日期:1993-01-01 00:00:00

  • The damages of high intensity focused ultrasound to transplanted hydatid cysts in abdominal cavities of rabbits with aids of ultrasound contrast agent and superabsorbent polymer.

    abstract::The present study investigates the damages of high intensity focused ultrasound (HIFU) to transplanted hydatid cysts in abdominal cavities of rabbits with aids of ultrasound contrast agent (UCA) and superabsorbent polymer (SAP) alone or in combination. A rabbit model with transplanted hydatid cyst was established by i...

    journal_title:Parasitology research

    pub_type: 杂志文章


    authors: Liu AB,Cai H,Ye B,Chen LL,Wang MY,Zhang J,Zhao YF

    更新日期:2013-05-01 00:00:00

  • Impact of trematode infections on periphyton grazing rates of freshwater snails.

    abstract::In freshwater ecosystems, snails can significantly influence the competition between primary producers through grazing of periphyton. This activity can potentially be modified by trematodes, a large group of parasites which mostly use molluscs as the first intermediate host. Available studies, however, show contradict...

    journal_title:Parasitology research

    pub_type: 杂志文章


    authors: Vivas Muñoz JC,Hilt S,Horák P,Knopf K

    更新日期:2018-11-01 00:00:00

  • Interaction between Ascaris suum and Pasteurella multocida in the lungs of mice.

    abstract::In an experiment including 8 groups of 15 mice, the effect of migrating Ascaris suum larvae in the lungs on the establishment and pathogenicity of aerosol exposure to Pasteurella multocida was investigated. Following aerosol exposure to P. multocida, mice with migrating A. suum in their lungs developed more severe pne...

    journal_title:Parasitology research

    pub_type: 杂志文章


    authors: Tjørnehøj K,Eriksen L,Aalbaek B,Nansen P

    更新日期:1992-01-01 00:00:00

  • Detection of Cryptosporidium spp. from human faeces by PCR-RFLP, cloning and sequencing.

    abstract::In this study, we compared and validated a nested ABC polymerase chain reaction restriction fragment length polymorphism (PCR-RFLP) assay to amplify Cryptosporidium parvum oocyst wall protein (COWP) gene fragment with a previous nested PCR-RFLP method. When RFLP of COWP gene did not provide clear results, we further a...

    journal_title:Parasitology research

    pub_type: 杂志文章


    authors: Leone A,Ripabelli G,Sammarco ML,Grasso GM

    更新日期:2009-02-01 00:00:00

  • Mattesia weiseri sp. nov., a new neogregarine (Apicomplexa: Lipotrophidae) pathogen of the great spruce bark beetle, Dendroctonus micans (Coleoptera: Curculionidae, Scolytinae).

    abstract::A new neogregarine pathogen of the great spruce bark beetle, Dendroctonus micans (Coleoptera: Curculionidae, Scolytinae), is described based on light microscopy and ultrastructural characteristics. The pathogen infects the fat body and the hemolymph of the beetle. The infection was nonsynchronous so that different dev...

    journal_title:Parasitology research

    pub_type: 杂志文章


    authors: Yaman M,Radek R

    更新日期:2015-08-01 00:00:00

  • Annulotrema (Monogenea: Dactylogyridae) from the gills of African tetras (Characiformes: Alestidae) in Lake Turkana, Kenya, with descriptions of four new species and a redescription of A. elongata Paperna and Thurston, 1969.

    abstract::Four new and four previously described species of Annulotrema were collected from the gills of four species (three genera, i.e. Alestes, Hydrocynus and Brycinus) of African tetras from Lake Turkana, Kenya: Annulotrema alestesnursi Paperna, 1973 from Brycinus nurse; Annulotrema ansatum n. sp., Annulotrema besalis Řehul...

    journal_title:Parasitology research

    pub_type: 杂志文章


    authors: Kičinjaová ML,Blažek R,Gelnar M,Řehulková E

    更新日期:2015-11-01 00:00:00

  • Genotypic and phenotypic evaluation for benzimidazole resistance or susceptibility in Haemonchus contortus isolates.

    abstract::Haemonchus contortus isolates were evaluated for benzimidazole (BZ) resistance or susceptibility by allele-specific PCR based on β-tubulin isotype 1 gene polymorphisms at the F167Y, E198A, and F200Y sites. Two isolates, one presumed susceptible from wild pronghorn antelope (PH) and one known to be resistant from goats...

    journal_title:Parasitology research

    pub_type: 杂志文章


    authors: Arafa WM,Holman PJ,Craig TM

    更新日期:2017-02-01 00:00:00

  • Co-existence of Myxobolus spp. (Myxozoa) in gray mullet (Mugil cephalus) juveniles from the Mediterranean Sea.

    abstract::Gray mullet (Mugilidae) occur in all seas and are farmed widely around the world, and thus, the risk of their parasites spreading through transport of aquaculture seed is a serious concern. Among others, gray mullets typically host a diversity of myxosporeans, a group in which spore morphometrics of genera has been co...

    journal_title:Parasitology research

    pub_type: 杂志文章


    authors: Sharon G,Ucko M,Tamir B,Diamant A

    更新日期:2019-01-01 00:00:00

  • Efficacy of essential oil from Cananga odorata (Lamk.) Hook.f. & Thomson (Annonaceae) against three mosquito species Aedes aegypti (L.), Anopheles dirus (Peyton and Harrison), and Culex quinquefasciatus (Say).

    abstract::The essential oil of Cananga odorata flowers was evaluated for oviposition-deterrent, ovicidal, insecticidal, and repellent activities toward three mosquito species: Aedes aegypti, Anopheles dirus, and Culex quinquefasciatus. Oviposition deterrence of the oil was evaluated on gravid females using oviposition deterrenc...

    journal_title:Parasitology research

    pub_type: 杂志文章


    authors: Soonwera M

    更新日期:2015-12-01 00:00:00

  • Molecular characterization of Leishamania isolates from China by inter-simple sequence repeat polymerase chain reaction.

    abstract::Leishmania has distinct epidemiological and biological characteristics and causes a variety of clinical symptoms. To understand the genetic diversity and the phylogenetic relationships among Leishmania isolates from China, 29 Leishmania isolates from different geographic origins, vectors, and hosts were analyzed using...

    journal_title:Parasitology research

    pub_type: 杂志文章


    authors: Wang Y,Yang Y,Wang J,Bao Y,Guan L,Gao C,Shi F

    更新日期:2010-05-01 00:00:00

  • Cloning and characterization of high mobility group box protein 1 (HMGB1) of Wuchereria bancrofti and Brugia malayi.

    abstract::A human homologue of high mobility group box 1 (HMGB1) protein was cloned and characterized from the human filarial parasites Wuchereria bancrofti and Brugia malayi. Sequence analysis showed that W. bancrofti HMGB1 (WbHMGB1) and B. malayi HMGB1 (BmHMGB1) proteins share 99 % sequence identity. Filarial HMGB1 showed typ...

    journal_title:Parasitology research

    pub_type: 杂志文章


    authors: Thirugnanam S,Munirathinam G,Veerapathran A,Dakshinamoorthy G,Reddy MV,Ramaswamy K

    更新日期:2012-08-01 00:00:00

  • Effects of parasitic helminths and ivermectin treatment on clinical parameters in the European wild boar (Sus scrofa).

    abstract::Limited information exists on serum biochemistry and haematology of the European wild boar, and few correlations have been found between parasitic burden and clinical parameters in this species. Naturally infected wild boars were experimentally treated to study the effect of nematode parasites and ivermectin treatment...

    journal_title:Parasitology research

    pub_type: 杂志文章


    authors: López-Olvera JR,Höfle U,Vicente J,Fernández-de-Mera IG,Gortázar C

    更新日期:2006-05-01 00:00:00

  • Comparative study of nitric oxide (NO) production during human hydatidosis: relationship with cystic fluid fertility.

    abstract::Human hydatidosis is characterized by a prolonged coexistence of Echinococcus granulosus and its host without effective rejection of the parasite. This parasitic infection constitutes a major health problem in Algeria. In this study, we investigated in vivo production of nitrite (NO(2)(-) + NO(3)(-)) in sera of Algeri...

    journal_title:Parasitology research

    pub_type: 杂志文章


    authors: Zeghir-Bouteldja R,Amri M,Bouaziz S,Mezioug D,Touil-Boukoffa C

    更新日期:2013-02-01 00:00:00