Temperature induced disease in the starfish Astropecten jonstoni

Staehli, Annette; Schaerer, Rolf; Hoelzle, Katharina; Ribi, Georg

doi:10.1017/s1755267209000633

Cited by 28 publications

(55 citation statements)

References 20 publications

(29 reference statements)

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“…Experiments in the field and in the laboratory indicate that increased temperature during immersion influences the progression and intensity of wasting disease in Pisaster, as has been reported for the Mediterranean sea star Astropecten jonstoni (Staehli et al 2008). The differences in infection intensity observed between our temperature treatments were quite strong, despite the fact that the experiments only lasted for a few days.…”

Section: Discussionmentioning

confidence: 52%

“…Attempts to link a bacterium to the disease using molecular tools have not yet been successful (e.g. Staehli et al 2008); nevertheless, wasting disease progresses in a predictable fashion. Initially, white coloured lesions appear and rapidly grow, followed by loss of turgor, body disintegration, decay, and death (Dungan et al 1982, Eckert et al 1999, Staehli et al 2008.…”

Section: Resale or Republication Not Permitted Without Written Consenmentioning

confidence: 99%

“…Staehli et al 2008); nevertheless, wasting disease progresses in a predictable fashion. Initially, white coloured lesions appear and rapidly grow, followed by loss of turgor, body disintegration, decay, and death (Dungan et al 1982, Eckert et al 1999, Staehli et al 2008. The incidence and progression of wasting disease appear to be highly temperature sensitive.…”

mentioning

confidence: 99%

“…For instance, widespread mortality of several sea stars, including the original keystone species Pisaster ochraceus (hereafter, Pisaster), occurred in association with unusually warm waters during the 1997 El Niño period in the Channel Islands (Eckert et al 1999). A recent laboratory-based study also documented temperature-dependent mortality from wasting disease in a Mediterranean sea star, Astropecten jonstoni (Staehli et al 2008).Our main objective was to investigate variation in disease effects in a keystone species. We quantified the prevalence and infection intensity of wasting disease in Pisaster ochraceus at several localities in Barkley Sound, British Columbia (BC), Canada.…”

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confidence: 99%

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Effects of temperature, season and locality on wasting disease in the keystone predatory sea star Pisaster ochraceus

Bates

Hilton²,

Harley³

2009

Dis. Aquat. Org.

110

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This study investigates wasting disease in the northeast Pacific keystone predatory sea star Pisaster ochraceus on the outer west coast of Vancouver Island (British Columbia, Canada). To quantify the effects of temperature, season and locality on the vulnerability of P. ochraceus to wasting disease, we conducted surveys and experiments in early and late summer. To test the prediction that a small increase in temperature would result in heightened infection intensities, we housed sea stars at different temperatures in the laboratory and caged sea stars subtidally at 2 depths. Prevalence and infection intensity were always higher in warm temperature treatments and did not differ between the sexes or with increasing size. Disease effects also varied with season and locality. Specimens held in aquaria displayed significantly higher disease prevalence and infection intensity in June versus August. Furthermore, sea stars from a sheltered inlet showed markedly higher prevalence of the disease in late summer, while wave-exposed sites had consistently low disease prevalence. Seasonal changes in reproductive potential, host condition and/or physiological acclimation, as well as differences in environmental regime among localities, may impact the dynamics of wasting disease. These results demonstrate that small increases in temperature could drive mass mortalities of Pisaster due to wasting disease, with vulnerability possibly reaching a peak in spring and in populations from sheltered localities. This is the most northern report of wasting disease in the class Asteroidea on the west coast of North America. KEY WORDS: Global warming · Temperature · Wasting disease · Pisaster ochraceus · Echinoderm Resale or republication not permitted without written consent of the publisherDis Aquat Org 86: [245][246][247][248][249][250][251] 2009 One category of disease, referred to as 'wasting disease', has the potential to devastate echinoderm populations because it can rapidly cause death and has been documented in many species that play key community roles (e.g. 10 sea star, 3 sea urchin, 2 brittlestar and 1 sea cucumber species from the northeast Pacific, Eckert et al. 1999; 1 sea star species from the Mediterranean, Staehli et al. 2008). For example, Dungan et al. (1982) attributed mass mortality and large-scale population declines in the sun star Heliaster kubiniji to wasting disease. The etiologic agent responsible for wasting disease is unknown and may vary among species and localities. Attempts to link a bacterium to the disease using molecular tools have not yet been successful (e.g. Staehli et al. 2008); nevertheless, wasting disease progresses in a predictable fashion. Initially, white coloured lesions appear and rapidly grow, followed by loss of turgor, body disintegration, decay, and death (Dungan et al. 1982, Eckert et al. 1999, Staehli et al. 2008. The incidence and progression of wasting disease appear to be highly temperature sensitive. For instance, widespread mortality of several sea stars, including t...

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Section: Discussionmentioning

confidence: 52%

Section: Resale or Republication Not Permitted Without Written Consenmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Effects of temperature, season and locality on wasting disease in the keystone predatory sea star Pisaster ochraceus

Bates

Hilton²,

Harley³

2009

Dis. Aquat. Org.

110

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“…Scientific hypotheses given for other asteroid mortality events include storms (6-11), temperature anomalies (1,3,12), starvation (13), and infection by unidentified pathogens (5). For instance, pathogens in the bacterial genus Vibrio (12,14,15) and an unidentified eukaryotic parasite (4) were seen in die-offs of the tropical asteroid Acanthaster planci and the Mediterranean asteroid Astropecten jonstoni. However, it is difficult to distinguish the cause of an infectious disease from the associated microbial community that can flourish in a sick or injured animal.…”

mentioning

confidence: 99%

Densovirus associated with sea-star wasting disease and mass mortality

Hewson

Button

Gudenkauf

et al. 2014

Proc. Natl. Acad. Sci. U.S.A.

272

406

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Significance Sea stars inhabiting the Northeast Pacific Coast have recently experienced an extensive outbreak of wasting disease, leading to their degradation and disappearance from many coastal areas. In this paper, we present evidence that the cause of the disease is transmissible from disease-affected animals to apparently healthy individuals, that the disease-causing agent is a virus-sized microorganism, and that the best candidate viral taxon, the sea star-associated densovirus (SSaDV), is in greater abundance in diseased than in healthy sea stars.

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