Potential virulence factors of bacteria associated with tail fan necrosis in the spiny lobster, <i>Jasus edwardsii</i>

Zha, Hua; Jeffs, Andrew; Dong, Ying; Lewis, Gillian

doi:10.1111/jfd.12791

Cited by 10 publications

(6 citation statements)

References 90 publications

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“…, Zha et al. ), but on the arrival of key colonists from unknown colonist pools. In a way, these species from the key colonist pool can resemble keystone species (Paine ), such as ecosystem engineers (Jones et al.…”

Section: Discussionmentioning

confidence: 99%

Key colonist pools and habitat filters mediate the composition of fiddler crab–associated bacterial communities

Cuellar-Gempeler

Leibold

2019

Ecology

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The diversity and composition of local communities depends strongly on the pool of species that have been able to colonize that community from elsewhere. Typically this is thought to depend on a larger regional species pool that is subject to local environmental constraints that act as "filters." Often, however, colonists arrive from multiple sources that differ in habitat conditions and have therefore already experienced distinct "prefiltering." Consequently, it is the interaction of species from these distinct pools that determine the composition of local communities. This interaction is particularly important when certain colonist pools provide keystone species with disproportionate roles on community assembly. We propose to identify these key colonist pools and their interaction with local habitat filters by quantifying community-level responses to colonist pool manipulation. We tested this framework to assess the contribution of surface and burrow sediment bacteria to bacterial communities associated with the fiddler crab, Uca panacea. In a mesocosm experiment, we combined normal and autoclaved surface and burrow sediment in a factorial experimental design, and we evaluated the community-level responses of carapace and gut microbial assemblages to sediment treatments with next-generation sequencing of the 16S rRNA gene. Results from carapace bacterial communities indicate that burrow sediments contribute most recruits, but surface sediments provide a few key colonizers that become established in the carapace community. In contrast, the composition of gut-associated microbial communities responded only to surface bacteria manipulation, despite being highly dissimilar from the community composition in both the surface and burrow source pools. These results suggest that assembly in the gut depends primarily on colonization from the surface sediment and regulation by habitat filtering. For fiddler crab-associated bacteria, we can conclude that key colonist pools and habitat filters regulate the influence of multiple colonist pools. Incorporating and distinguishing the contribution of multiple sources of species, rather than a single regional species pool, may better explain community dynamics in many systems, especially those with weak habitat filters.

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Section: Discussionmentioning

confidence: 99%

Key colonist pools and habitat filters mediate the composition of fiddler crab–associated bacterial communities

Cuellar-Gempeler

Leibold

2019

Ecology

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“…However, its most interesting properties related to crustaceans exoskeletons have only recently been reported. V. crassostreae seems to be associated with the tail fan necrosis of spiny lobsters where is chitinolytic ability was also shown [74]. This biofilm former, as many Vibrio spp.…”

Section: Discussionmentioning

confidence: 81%

Bacterial biofilm development during experimental degradation of <em>Melicertus kerathurus</em> exoskeleton in seawater

et al. 2018

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Chitinolytic bacteria are widespread in marine and terrestrial environment, and this is rather a reflection of their principle growth substrate's ubiquity, chitin, in our planet. In this paper, we investigated the development of naturally occurring bacterial biofilms on the exoskeleton of the shrimp Melicertus kerathurus during its degradation in sea water. During a 12-day experiment with exoskeleton fragments in batch cultures containing only sea water as the growth medium at 18 °C in darkness, we analysed the formation and succession of biofilms by scanning electron microscopy and 16S rRNA gene diversity by next generation sequencing. Bacteria belonging to the γ- and α-Proteobacteria and Bacteroidetes showed marked (less or more than 10%) changes in their relative abundance from the beginning of the experiment. These bacterial taxa related to known chitinolytic bacteria were the Pseudolateromonas porphyrae , Halomonas aquamarina , Reinekea aestuarii , Colwellia asteriadis and Vibrio crassostreae . These bacteria could be considered as appropriate candidates for the degradation of chitinous crustacean waste from the seafood industry as they dominated in the biofilms developed on the shrimp's exoskeleton in natural sea water with no added substrates and the degradation of the shrimp exoskeleton was also evidenced.

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“…In India, Leslie et al (2012) also assumed that the TFN syndrome lesions occurring on P. homarus held in a laboratory lobster culture rearing system in Chennai were caused by chitinivorous bacteria and a luminous Vibrio harveyi was isolated from lesions. Studies by Zha et al (2018Zha et al ( , 2019 and Pande et al (2021) also focused on the association of microorganisms with TFN syndrome lesions. As well as bacteria, fungal hyphae were also noted and the conclusion from these studies is that these microorganisms, both bacteria and fungi, were opportunistic and therefore unlikely to be true primary pathogens.…”

Section: Epidemiology Of Tfn Syndrome In Australasiamentioning

confidence: 99%

Tail Fan Necrosis syndrome in decapod crustaceans: A review

Jones,

Brosnahan,

Pande

2024

Journal of Fish Diseases

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Lobsters and crayfish in Australasia can develop a condition known as Tail Fan Necrosis (TFN syndrome). Many attempts have been made to find a primary pathogen or link the syndrome to commercial activities, but a solution remains elusive. TFN syndrome is a ‘wicked problem’, a problem difficult or impossible to solve because of incomplete and contradictory information forming a matrix of potential outcomes with no simple solution. Reviewing the literature shows TFN syndrome is sometimes reported to develop in association with sterile blisters on the telson and uropods which may rupture permitting invasion by environmental fungal and/or bacterial flora. Whether blisters form prior to, or because of, infection is unknown. TFN syndrome sometimes develops in captivity, sometimes requires a previous insult to the telson and uropods, and prevalence is patchy in the wild. The literature shows the cause of blisters associated with TFN syndrome remains an enigma, for which we suggest several possible initiating factors. We strongly urge that researchers not ‘jump to conclusions’ as to the aetiology of TFN syndrome. It cannot be explained without carefully exploring alternative aetiologies whilst being cognisant of the age‐old lesson that ‘correlation does not equal causation’.

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Potential virulence factors of bacteria associated with tail fan necrosis in the spiny lobster, Jasus edwardsii

Cited by 10 publications

References 90 publications

Key colonist pools and habitat filters mediate the composition of fiddler crab–associated bacterial communities

Key colonist pools and habitat filters mediate the composition of fiddler crab–associated bacterial communities

Bacterial biofilm development during experimental degradation of <em>Melicertus kerathurus</em> exoskeleton in seawater

Tail Fan Necrosis syndrome in decapod crustaceans: A review

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