White spot syndrome virus (WSSV) detected by PCR in rotifers and rotifer resting eggs from shrimp pond sediments

Yan, Dawei; Dong, Shuanglin; Huang, Jie; Yu, Xiaoming; Feng, Min-Yi; Liu, Xiangyi

doi:10.3354/dao059069

Cited by 73 publications

(46 citation statements)

References 10 publications

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“…At least 18 cultured and/or wild penaeid shrimp (Park et al, 1998), eight caridean species (Pramod-Kiran et al, 2002), seven species of lobster (Rajendran et al, 1999), seven species of crayfish (Edgerton, 2004), 38 crab species (Yoganandhan et al, 2003) six non-decapod crustacean species (Hossain et al, 2001), members of the phyla Chaetognata and Rotifera (Yan et al, 2004), polychaete worms (Supak et al, 2005) and some aquatic insect larva (Ramírez-Douriet et al, 2005) have been found susceptible to the virus. Histopathological observations during WSV infection in brief is available regarding shrimp species such as Penaes monodon (Durand et al, 1997;Wang et al, 1999Wang et al, , 2000Mishra and Shekhar, 2005) Litopenaeus vannamei and Marsupenaeus japonicus (Lu et al, 1997;Lightner et al, 1998;Escobedo-Bonilla et al, 2007;Perez et al, 2005;Pantoja and Lightner, 2003), species of Crabs (Kanchanaphum et al, 1998;Kou et al, 1998) and lobster (Rajendran et al, 1999;Wang et al, 1998;Jiravanichpaisal et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Pathological changes in Fenneropenaeus indicus experimentally infected with white spot virus and virus morphogenesis

Manjusha

Varghese

Philip

et al. 2009

Journal of Invertebrate Pathology

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a b s t r a c tTo demonstrate pathological changes due to white spot virus infection in Fenneropenaeus indicus, a batch of hatchery bred quarantined animals was experimentally infected with the virus. Organs such as gills, foregut, mid-gut, hindgut, nerve, eye, heart, ovary and integument were examined by light and electron microscopy. Histopathological analyses revealed changes hitherto not reported in F. indicus such as lesions to the internal folding of gut resulted in syncytial mass sloughed off into lumen, thickening of hepatopancreatic connective tissue with vacuolization of tubules and necrosis of rectal pads in hindgut. Virus replication was seen in the crystalline tract region of the compound eye and eosinophilic granules infiltrated from its base. In the gill arch, dilation and disintegration of median blood vessel was observed. In the nervous tissues, encapsulation and subsequent atrophy of hypertrophied nuclei of the neurosecretory cells were found. Transmission electron microscopy showed viral replication and morphogenesis in cells of infected tissue. De novo formed vesicles covered the capsid forming a bilayered envelop opened at one end inside the virogenic stroma. Circular vesicles containing nuclear material was found fused with the envelop. Subsequent thickening of the envelop resulted in the fully formed virus. In this study, a correlation was observed between the stages of viral multiplication and the corresponding pathological changes in the cells during the WSV infection. Accordingly, gill and foregut tissues were found highly infected during the onset of clinical signs itself, and are proposed to be used as the tissues for routine disease diagnosis.

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Section: Introductionmentioning

confidence: 99%

Pathological changes in Fenneropenaeus indicus experimentally infected with white spot virus and virus morphogenesis

Manjusha

Varghese

Philip

et al. 2009

Journal of Invertebrate Pathology

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“…The well-studied insect errantiviruses from the gypsy clade were shown to have acquired their env region from baculoviruses, and the env regions of the nematode Cer and Tas retroviruses were acquired from a phlebovirus and a herpesvirus, respectively. So far, only one virus from aquatic invertebrates has been sequenced, a large DNA virus that can pass between rotifer and shrimp hosts (Yan et al, 2004). Although its ORFs do not reveal similarities with bdelloid env-like genes, additional viruses inhabiting aquatic invertebrates will hopefully be characterized in the future (e.g.…”

Section: Discussionmentioning

confidence: 99%

A deep-branching clade of retrovirus-like retrotransposons in bdelloid rotifers

Gladyshev

Meselson

Arkhipova

2007

Gene

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Rotifers of class Bdelloidea, a group of aquatic invertebrates in which males and meiosis have never been documented, are also unusual in their lack of multicopy LINE-like and gypsy-like retrotransposons, groups inhabiting the genomes of nearly all other metazoans. Bdelloids do contain numerous DNA transposons, both intact and decayed, and domesticated Penelope-like retroelements Athena, concentrated at telomeric regions. Here we describe two LTR retrotransposons, each found at low copy number in a different bdelloid species, which define a clade different from previously known clades of LTR retrotransposons. Like bdelloid DNA transposons and Athena, these elements have been found preferentially in telomeric regions. Unlike bdelloid DNA transposons, many of which are decayed, the newly described elements, named Vesta and Juno, inhabiting the genomes of Philodina roseola and Adineta vaga, respectively, appear to be intact and to represent recent insertions, possibly from an exogenous source. We describe the retrovirus-like structure of the new elements, containing gag, pol, and env-like open reading frames, and discuss their possible origins, transmission, and behavior in bdelloid genomes.

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“…Macrobrachium rosenbergii nodavirus (MrNV; the causative agent of white tail disease) and extra small virus (XSV) can be vertically transmitted (Sudha ka -ran et al 2007). Rotifers naturally exposed to sediments with WSSV passed the virus to their eggs (Yan et al 2004), and the virus appears to use vertical transmission in brine shrimp as well (Li et al 2003). Infectious hypodermal and hemato poietic necrosis virus (IHHNV) of shrimp uses vertical transmission in hosts that survive the acute stages of infection (Motte et al 2003).…”

Section: Discussionmentioning

confidence: 99%

Genetic diversity of the Caribbean spiny lobster virus, Panulirus argus virus 1 (PaV1), and the discovery of PaV1 in lobster postlarvae

Moss¹,

Butler²,

Behringer³

et al. 2012

Aquat. Biol.

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Panulirus argus virus 1 (PaV1) is an unclassified, pathogenic virus first discovered in Caribbean spiny lobsters Panulirus argus from the Florida Keys, USA, and has since been confirmed in lobsters in other parts of the Caribbean. Several studies have examined the prevalence, pathogenicity, and population dynamics of the pathogen in the lobster host, but little is known about the genetic diversity of the virus. We analyzed a fragment of viral DNA from lobsters collected in the Florida Keys, which provided the first insight into the genetic diversity of PaV1. The variation in viral sequences, both within and between individual lobsters, indicates that lobsters can be infected with multiple viral strains. Laboratory experiments in which uninfected lobsters were serially exposed to lobsters inoculated with PaV1 implied that rapid mutation of strains is unlikely and suggest that there may be endemic strains of PaV1. In addition, we discovered PaV1 in P. argus postlarvae (pueruli), suggesting that the virus may disperse through the Caribbean within the long-lived (5 to 7 mo) planktonic phyllosoma larvae -a novel mechanism for dispersal of viruses in the sea. KEY WORDS: Genetic variation · Pueruli · Vertical transmissionResale or republication not permitted without written consent of the publisher

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White spot syndrome virus (WSSV) detected by PCR in rotifers and rotifer resting eggs from shrimp pond sediments

Cited by 73 publications

References 10 publications

Pathological changes in Fenneropenaeus indicus experimentally infected with white spot virus and virus morphogenesis

Pathological changes in Fenneropenaeus indicus experimentally infected with white spot virus and virus morphogenesis

A deep-branching clade of retrovirus-like retrotransposons in bdelloid rotifers

Genetic diversity of the Caribbean spiny lobster virus, Panulirus argus virus 1 (PaV1), and the discovery of PaV1 in lobster postlarvae

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White spot syndrome virus (WSSV) detected by PCR in rotifers and rotifer resting eggs from shrimp pond sediments

Cited by 73 publications

References 10 publications

Pathological changes in Fenneropenaeus indicus experimentally infected with white spot virus and virus morphogenesis

Pathological changes in Fenneropenaeus indicus experimentally infected with white spot virus and virus morphogenesis

A deep-branching clade of retrovirus-like retrotransposons in bdelloid rotifers

Genetic diversity of the Caribbean spiny lobster virus, Panulirus argus virus 1 (PaV1), and the ­discovery of PaV1 in lobster postlarvae

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Genetic diversity of the Caribbean spiny lobster virus, Panulirus argus virus 1 (PaV1), and the discovery of PaV1 in lobster postlarvae