Continued declines of black abalone along the coast of California: are mass mortalities related to El Niño events?

Raimondi, Peter T.; Wilson, C. M.; Ambrose, Richard; Engle, John M.; Minchinton, Todd E.

doi:10.3354/meps242143

Cited by 62 publications

(49 citation statements)

References 15 publications

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“…Adults and juvenile recruits were measured and classified based on their lengths as described in the previous subsection. Additional details of sampling methods have been previously described in Altstatt et al (1996) and Raimondi et al (2002).…”

Section: Methodsmentioning

confidence: 99%

“…The need for local fertilization is critical because there is evidence that black abalone larvae have limited dispersal, localized recruitment and relatively closed populations (Prince et al 1988, Hamm & Burton 2000, Chambers et al 2006. Consequently, black abalone recruitment and recovery is likely to be a positive function of the local abundance of adults (McShane 1992, Raimondi et al 2002.…”

Section: Abstract: Withering Syndrome · Haliotis Cracherodii · Commumentioning

confidence: 99%

“…Declines are due primarily to a fatal disease called 'withering syndrome' (Lafferty & Kuris 1993, Altstatt et al 1996, Raimondi et al 2002. Withering syndrome is caused by the bacterium 'Candidatus Xenohaliotis californiensis', which attacks the lining of the digestive track and results in reduced body mass, weakness, and eventual withering of the abalone's foot until it can no longer cling to the substratum (Friedman et al 2000).…”

Section: Abstract: Withering Syndrome · Haliotis Cracherodii · Commumentioning

confidence: 99%

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Recruitment failure and shifts in community structure following mass mortality limit recovery prospects of black abalone

Miner¹,

Altstatt²,

Raimondi³

et al. 2006

Mar. Ecol. Prog. Ser.

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Section: Methodsmentioning

confidence: 99%

Section: Abstract: Withering Syndrome · Haliotis Cracherodii · Commumentioning

confidence: 99%

Section: Abstract: Withering Syndrome · Haliotis Cracherodii · Commumentioning

confidence: 99%

See 1 more Smart Citation

Recruitment failure and shifts in community structure following mass mortality limit recovery prospects of black abalone

Miner¹,

Altstatt²,

Raimondi³

et al. 2006

Mar. Ecol. Prog. Ser.

Self Cite

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“…In our study, the residual variability in mortality could be attributed to different diets, local environmental or density conditions both in the field and in the laboratory, as well as random variation among studies. In addition, chronic diseases, e.g., the withering syndrome, can tremendously increase mortality rates leading to precipitous population declines (such as the mass mortality events observed in California for the black abalone H. cracherodii; Raimondi et al 2002). Understanding the circumstances under which mortality is likely to increase is fundamental to guide management and restoration efforts.…”

Section: Discussionmentioning

confidence: 99%

Allometric scaling of mortality rates with body mass in abalones

et al. 2011

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The existence of an allometric relationship between mortality rates and body mass has been theorized and extensively documented across taxa. Within species, however, the allometry between mortality rates and body mass has received substantially less attention and the consistency of such scaling patterns at the intra-specific level is controversial. We reviewed 73 experimental studies to examine the relationship between mortality rates and body size among seven species of abalone (Haliotis spp.), a marine herbivorous mollusk. Both in the field and in the laboratory, log-transformed mortality rates were negatively correlated with log-transformed individual body mass for all species considered, with allometric exponents remarkably similar among species. This regular pattern confirms previous findings that juvenile abalones suffer higher mortality rates than adult individuals. Field mortality rates were higher overall than those measured in the laboratory, and the relationship between mortality and body mass tended to be steeper in field than in laboratory conditions for all species considered. These results suggest that in the natural environment, additional mortality factors, especially linked to predation, could significantly contribute to mortality, particularly at small body sizes. On the other hand, the consistent allometry of mortality rates versus body mass in laboratory conditions suggests that other sources of mortality, beside predation, are size-dependent in abalone.

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“…The WS-RLO caused almost 100% mortality in wild populations of North American black abalone, and more than 35% mortality in red abalone H. rufescens (Raimondi et al, 2002;Moore et al, 2000;Moore et al, 2001;Friedman et al, 2002). In contrast, WS-RLOinfected European abalone H. tuberculata showed no symptoms characteristic of WS (Balseiro et al, 2006).…”

Section: Discussionmentioning

confidence: 99%

Pathogenicity of two <i>Candidatus</i> Xenohaliotis californiensis genetic variants against three abalone species (the genus <i>Haliotis</i>)

et al. 2016

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For half a century, Japan has practiced marine stock-enhancement programs that aim to preserve or enhance natural fisheries resources. Currently, juveniles of about 70 marine species are produced in national and prefectural hatcheries, and released annually into the wild (Fisheries Research Agency, 2015a). Because of their high market value, abalone (Haliotidae) are particularly important coastal fishery resources; 30 Japanese governmental entities (city or prefectural governments) currently produce and release the juveniles to enhance stock (Fisheries Research Agency, 2015b). ABSTRACT Candidatus Xenohaliotis californiensis, a Rickettsia-like organism (RLO) that causes 'withering syndrome' (WS) in abalone, has been recently detected in Japan. We analyzed partial nucleotide sequence (113 bp) of 16S rRNA of WS-RLOs (n = 335) from Japanese black abalone Haliotis discus discus, Ezo abalone H. discus hannai, giant abalone H. gigantea, tokobushi abalone H. diversicolor aquatilis and fukutokobushi abalone H. diversicolor diversicolor. All the sequences from Japanese black, Ezo and giant abalone were identical, but different from those from tokobushi and fukutokobushi at one nucleotide position. We also conducted cohabitation challenge to determine whether the WS-RLO in fukutokobushi infects Japanese black and giant abalone or the agent in Japanese black abalone infects fukutokobushi. Twenty fukutokobushi naturally infected with WS-RLO were cohabited with 10 healthy individuals of each of Japanese black, giant, and fukutokobushi abalone for a total of 84 days. At the end of the experiment, surviving fukutokobushi abalone were positive in PCR test for WS-RLO, but negative for that of Japanese black and Ezo abalone. In the reverse combination experiment, in which naturally infected Japanese black abalone were cohabited with these three species, WS-RLO transmissions were found in Japanese black and Ezo, but not in fukutokobushi abalone. These results suggest that two genetic variants of WS-RLO have a different host specificity.

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Continued declines of black abalone along the coast of California: are mass mortalities related to El Niño events?

Cited by 62 publications

References 15 publications

Recruitment failure and shifts in community structure following mass mortality limit recovery prospects of black abalone

Recruitment failure and shifts in community structure following mass mortality limit recovery prospects of black abalone

Allometric scaling of mortality rates with body mass in abalones

Pathogenicity of two <i>Candidatus</i> Xenohaliotis californiensis genetic variants against three abalone species (the genus <i>Haliotis</i>)

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