New Definitive Host Record for Chordodes morgani (Nematomorpha) in Nebraska with Notes on Ecology

Two surf scoters (Melanitta perspicillata L.) from near Juneau, Alaska, were examined; a total of 22 Tristriata anatis Belopolskaia, 1953, were removed from the ceca and large intestine. This is the second reported discovery of T. anatis, the first in North America, and a new host record. The species description is expanded. Morphology and the influence of methods on interpretation of structures are discussed.

Download Full-text

Valipora minuta (Coil, 1950) (Cyclophyllidea: Gryporhynchidae) in Butorides striata (Linnaeus, 1758) (Aves: Ardeidae): The first record from Brazil and a new definitive host record

Check List ◽

10.15560/8.5.914 ◽

2012 ◽

Vol 8 (5) ◽

pp. 914 ◽

Cited By ~ 1

Author(s):

Hudson Alves Pinto ◽

Vítor Luis Tenório Mati ◽

Alan Lane de Melo

Keyword(s):

South America ◽

Definitive Host ◽

Related Species ◽

Host Record ◽

First Record ◽

Minas Gerais ◽

Closely Related Species ◽

Belo Horizonte ◽

First Time

The gryporhynchid tapeworm Valipora minuta (Coil, 1950) found in Butorides striata (Linnaeus, 1758) from Pampulha dam, Belo Horizonte, Minas Gerais, Brazil, which represents a new definitive host, is reported from South America for the first time. The morphology of the cestodes found is briefly described and compared with previous reports and closely related species.

Download Full-text

Nematodes of Astyanax fasciatus (Actinopterygii: Characidae) and their parasitic indices in the São Francisco river, Brazil

Revista Brasileira de Parasitologia Veterinária ◽

10.1590/s1984-29612016074 ◽

2017 ◽

Vol 26 (1) ◽

pp. 10-16 ◽

Cited By ~ 4

Author(s):

Flavia Guerra Vieira-Menezes ◽

Danielle Priscilla Correia Costa ◽

Marilia Carvalho Brasil-Sato

Keyword(s):

Definitive Host ◽

Host Record ◽

Morphometric Data ◽

New Host ◽

Carnivorous Fish ◽

Sao Francisco River ◽

New Host Record ◽

São Francisco River ◽

Astyanax Fasciatus ◽

Ecological Parameters

Abstract The endoparasite fauna of Astyanax fasciatus from the upper São Francisco river was investigated and ecological parameters and morphological and morphometric data on the parasites are presented. A total of 74 specimens of banded astyanax were collected downstream from the Três Marias dam, municipality of Três Marias, Minas Gerais (18°12’32”S, 45°15’41”W) in January 2011 and January 2012. Eleven taxa of Nematoda were found: Contracaecum sp.; Hysterothylacium sp.; Goezia sp.; Brevimulticaecum sp.; Procamallanus sp.; Procamallanus (Spirocamallanus) saofranciscencis; Cystidicoloides sp.; Spinitectus rodolphiheringi; Rhabdochona sp.; Spiroxys sp.; and Eustrongylides sp.. The fauna of A. fasciatus consisted of by larval specimens of Contracaecum sp., Hysterothylacium sp., Brevimulticaecum sp., Cystidicoloides sp., and Spiroxys sp., and by adult specimens of P. saofranciscencis, whose prevalence was greater than 10%. Thus, this fish acts as an intermediate host of some species of larval nematodes especially, Anisakidae and Acanthocheilidae (Brevimulticaecum sp., new host record and new locality). It participates in transmitting species such Rhabdochona sp. to carnivorous fish and also acts as a definitive host for P. saofranciscencis and S. rodolphiheringi in the upper São Francisco river.

Download Full-text

First report of Rinamba opacicollis Cameron (Hymenoptera: Braconidae, Doryctinae) in India as parasitoid of coffee stem borer, Xylotrechus quadripes (Chevrolat) (Coleoptera: Cerambycidae)

ENTOMON ◽

10.33307/entomon.v44i4.486 ◽

2020 ◽

Vol 44 (4) ◽

pp. 311-314

Author(s):

A. Roobakkumar ◽

H.G. Seetharama ◽

P. Krishna Reddy ◽

M.S. Uma ◽

A. P. Ranjith

Keyword(s):

Integrated Control ◽

Host Record ◽

Stem Borer ◽

Arabica Coffee ◽

First Report ◽

The World ◽

First Time

Rinamba opacicollis Cameron (Hymenoptera: Braconidae) was collected from Chikkamagaluru, Karnataka, India for the first time from the larvae of white stem borer, Xylotrechus quadripes Chevrolat infesting arabica coffee. Its role in the biological or integrated control of X. quadripes remains to be evaluated. White stem borer could be the first host record of this parasitoid all over the world.

Download Full-text

Species of Aprostocetus Westwood (Hymenoptera: Eulophidae) associated with eggs of Lestes Leach (Odonata)

The Entomologist s monthly magazine ◽

10.31184/m00138908.1553.3992 ◽

2019 ◽

Vol 155 (3) ◽

pp. 200-208

Author(s):

R.R. Askew ◽

C.E. Hermosilla

Keyword(s):

Host Record ◽

Egg Parasitoid

Aprostocetus citripes (Thomson) is recorded as an egg parasitoid of Lestes virens (Charpentier) in Spain, the first host record for this species. Aspects of its biology are described. Three other species of Aprostocetus whose larvae develop on Lestes eggs are discussed.

Download Full-text

Taeniasis in a German Shepherd Pup: A Case Report

THE INDIAN JOURNAL OF VETERINARY SCIENCES AND BIOTECHNOLOGY ◽

10.21887/ijvsbt.15.1.21 ◽

2019 ◽

Vol 15 (01) ◽

pp. 83-84

Author(s):

B J Thakre ◽

Joice P Joseph ◽

Binod Kumar ◽

Nilima Brahmbhatt ◽

Krishna Gamit

Keyword(s):

Case Report ◽

Life Cycle ◽

Definitive Host ◽

Gastrointestinal Diseases ◽

Intermediate Hosts ◽

German Shepherd ◽

Taenia Hydatigena ◽

Taenia Multiceps ◽

Taenia Crassiceps ◽

Dipylidium Caninum

Taenia spp. are long, segmented, parasitic tapeworms and are relatively uncommon in canine gastrointestinal diseases compared to other tapeworms like Dipylidium caninum. These parasites have an indirect life cycle, cycling between definitive and intermediate hosts. Dogs act as definitive hosts of different species of Taenia including Taenia multiceps, Taenia serialis, Taenia crassiceps, Taenia hydatigena, Taenia pisiformis, etc. Taenia multiceps is of greatest zoonotic relevance in human. In the definitive host, it causes only mild infection. Larvae are more likely to cause disease than adult tapeworms. Taeniasis in pets should be cautiously handled because of its zoonotic importance. This communication reports a case of 3 months old pup suffering from Taenia infection that was successfully managed with a combination of praziquantel and fenbendazole.

Download Full-text

Distribution of the cestode Urocystis prolifer Villot, 1880 (Cyclophyllidea: Hymenolepididae) in the Palaearctic and new data on its postembryonic development

Journal of Helminthology ◽

10.1017/s0022149x21000249 ◽

2021 ◽

Vol 95 ◽

Author(s):

S.A. Kornienko ◽

L.A. Ishigenova

Keyword(s):

Host Specificity ◽

Geographical Distribution ◽

Experimental Infection ◽

Definitive Host ◽

Intestinal Parasite ◽

Geographic Area ◽

Postembryonic Development ◽

Generic Diagnosis ◽

Intermediate Hosts ◽

Very High

Abstract Urocystis prolifer Villot, 1880 is an intestinal parasite of Sorex spp. In the Palaearctic. There are significant differences in the descriptions of both adults and stages of ontogenesis of U. prolifer as described by various authors. The experimental infection of intermediate hosts with cestodes has been conducted. An overview of the geographical distribution, infestation of the definitive hosts and the development of the metacestode stages of U. prolifer are presented. The cestode is characterized by an extensive geographic area in the Palaearctic, wide host specificity and very high rates of infection of its definitive host. Urocystis prolifer has been recorded mostly in the taiga and forest zones of Palaearctic. Fourteen species of Sorex were registered as the definitive host. Redescription of U. prolifer and an amended generic diagnosis are provided. A complete description of the ontogeny from oncosphere to fully developed metacestode is given. Features of development of the metacestode are an asexual larval reproduction, the absence of the anterior and posterior obturator valve in the cyst of the fully developed urocyst, as well as excretory bodies.

Download Full-text

Mastomys natalensis (Smith, 1834) as a natural host for Schistosoma haematobium (Bilharz, 1852) Weinland, 1858 x Schistosoma bovis Sonsino, 1876 introgressive hybrids

Parasitology Research ◽

10.1007/s00436-021-07099-7 ◽

2021 ◽

Author(s):

Boris A.E.S. Savassi ◽

Gauthier Dobigny ◽

Jonas R. Etougbétché ◽

Thalasse T. Avocegan ◽

François T. Quinsou ◽

...

Keyword(s):

Definitive Host ◽

Schistosoma Haematobium ◽

Rattus Rattus ◽

Introgressive Hybridization ◽

Mastomys Natalensis ◽

New Host ◽

Time Period ◽

Schistosoma Bovis ◽

Bulinus Globosus ◽

Internal Transcribed Spacer Rdna

AbstractCercarial emission of schistosomes is a determinant in the transmission to the definitive host and constitutes a good marker to identify which definitive host is responsible for transmission, mainly in introgressive hybridization situations. Our goal was to test the hypothesis that micro-mammals play a role in Schistosoma haematobium, S. bovis, and/or S. haematobium x S. bovis transmission. Small mammal sampling was conducted in seven semi-lacustrine villages of southern Benin. Among the 62 animals trapped, 50 individuals were investigated for Schistosoma adults and eggs: 37 Rattus rattus, 3 Rattus norvegicus, 9 Mastomys natalensis, and 1 Crocidura olivieri. Schistosoma adults were found in four R. rattus and two M. natalensis, with a local prevalence reaching 80% and 50%, respectively. Two cercarial chronotypes were found from Bulinus globosus experimentally infected with miracidia extracted from naturally infected M. natalensis: a late diurnal and nocturnal chronotype, and an early diurnal, late diurnal, and nocturnal chronotype. The cytochrome C oxidase subunit I mtDNA gene of the collected schistosomes (adults, miracidia, and cercariae) belonged to the S. bovis clade. Eleven internal transcribed spacer rDNA profiles were found; four belonged to S. bovis and seven to S. haematobium x S. bovis. These molecular results together with the observed multi-peak chronotypes add M. natalensis as a new host implicated in S. haematobium x S. bovis transmission. We discuss the origin of the new chronotypes which have become more complex with the appearance of several peaks in a 24-h day. We also discuss how the new populations of offspring may optimize intra-host ecological niche, host spectrum, and transmission time period.

Download Full-text

Effects of parasites upon non-host predator avoidance behaviour in native and invasive gammarids

Parasitology ◽

10.1017/s0031182020002140 ◽

2020 ◽

pp. 1-7

Author(s):

Sajad Farahani ◽

Per J. Palsbøll ◽

Ido Pen ◽

Jan Komdeur

Keyword(s):

Invasive Species ◽

Definitive Host ◽

Predator Avoidance ◽

Gasterosteus Aculeatus ◽

Chemical Cues ◽

Critical Role ◽

Fundamental Question ◽

Intermediate Hosts ◽

Gammarus Fossarum ◽

Acanthocephalan Parasite

Abstract The acanthocephalan parasite, Polymorphus minutus, manipulates its intermediate hosts' (gammarids) behaviour, presumably to facilitate its transmission to the definitive hosts. A fundamental question is whether this capability has evolved to target gammarids in general, or specifically sympatric gammarids. We assessed the responses to chemical cues from a non-host predator (the three-spined sticklebacks Gasterosteus aculeatus) in infected and non-infected gammarids; two native (Gammarus pulex and Gammarus fossarum), and one invasive (Echinogammarus berilloni) species, all sampled in the Paderborn Plateau (Germany). The level of predator avoidance was assessed by subjecting gammarids to choice experiments with the presence or absence of predator chemical cues. We did not detect any behavioural differences between uninfected and infected G. pulex and E. berilloni, but an elevated degree of predator avoidance in infected G. fossarum. Avoiding non-host predators may ultimately increase the probability of P. minutus' of predation by the definitive host. Our results suggested that P. minutus' ability to alter the host's behaviour may have evolved to specifically target sympatric gammarid host species. Uninfected gammarids did not appear to avoid the non-host predator chemical cues. Overall the results also opened the possibility that parasites may play a critical role in the success or failure of invasive species.

Download Full-text