Limited evidence for increased cold-tolerance of invasive versus native Caulerpa taxifolia

Glasby, Tim M.; Gibson, Peter T.

doi:10.1007/s00227-007-0678-0

Cited by 14 publications

(6 citation statements)

References 24 publications

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“…Generally, one of the distinct characteristics of an invasive algal species is the greater tolerance to harsh environmental conditions under which many native species are not able to survive [10,16]. In contrast to this scenario, we found that germlings of the intro duced kelp U. pinnatifida were less resistant, at least in the short term, to low salinity than the those of the native kelp S. latissima.…”

Section: Discussioncontrasting

confidence: 76%

Comparing salinity tolerance in early stages of the sporophytes of a non-indigenous kelp (Undaria pinnatifida) and a native kelp (Saccharina latissima)

Peteiro

Sánchez

2012

Russ J Mar Biol

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The short term effects of low salinities on the survival of germlings of an introduced kelp Undaria pinnatifida and a native kelp Saccharina latissima were assessed under laboratory conditions. This experiment was designed to compare the differential stress tolerance to salinity of the early life history stages of sporo phytes of these two kelps that co occur on European Atlantic coasts. Germlings (young sporophytes) of both species were exposed for 4 days to salinities ranging from 31 (control) to 26, 21, 16, 11, and 6 psu. Afterwards, they were post cultured in control seawater (31 psu) for another 4 days to corroborate the viability of injured germlings. Results showed that germlings of the introduced kelp were less resistant to low salinity, surviving to as low as 16 psu; whereas the germlings of the native kelp survived in salinities as low as 11 psu. Despite the observed differences, both species are relatively tolerant to low salinity. Our observations also indicated that, at least in a short term, gametophytes of both species were able to survive in salinities as low as 6 psu. The significance of low salinity tolerance to the distribution of these kelps and for their offshore cultivation is dis cussed.

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Section: Discussioncontrasting

confidence: 76%

Comparing salinity tolerance in early stages of the sporophytes of a non-indigenous kelp (Undaria pinnatifida) and a native kelp (Saccharina latissima)

Peteiro

Sánchez

2012

Russ J Mar Biol

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“…Establishment of feral populations by these species may still be of concern, however, in terms of potential genetic or disease effects on native populations, or establishment in regions of Australia where they do not occur naturally (such as between the west and east coasts). For example, invasive populations of Caulerpa taxifolia in temperate regions of Australia may have derived from tropical populations (possibly via the aquarium trade), rather than from a genetically-modified cold-tolerant ‘aquarium’ strain (Murphy & Schaffelke 2003; Glasby & Gibson 2007).…”

Section: Discussionmentioning

confidence: 99%

Characterization of the marine aquarium trade and management of associated marine pests in Australia, a country with stringent import biosecurity regulation

et al. 2011

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SUMMARYTrade in ornamental marine species in Australia, a country with relatively stringent import controls, was investigated using a telephone survey of wholesalers and retailers, and a desktop review of internet import databases and hobbyist trading websites. Information on the regulatory framework was obtained from government and other published or online sources, and from staff of regulatory agencies. Although the trade is small relative to that in the USA, Europe and parts of Asia, Australia imports significant numbers of marine fish each year for the aquarium trade. Many of the more than 200 species imported have the potential to become environmental and/or economic pests. Imported individuals of native species could act as vectors of disease or affect the genetic diversity of native populations if they were released into the wild. Regulatory measures include the use of lists of permitted species of plants and animals, a case-by-case risk assessment process for species not on these lists, and requirements for health certification and quarantining of imported stock. Once within Australia, however, translocation is less rigorously controlled, being managed by individual states and based largely on lists of prohibited species, though generally with scope for case-by-case assessment and refusal of permits for unwanted species, such as recognized pests. Wholesalers and retailers interviewed generally showed a responsible attitude to the disposal of dead or unwanted stock, but awareness and understanding of the potential pest risk of ornamental marine species was generally poor. The importance of raising public awareness of the pest potential of ornamental marine species is likely to increase with the growing importance of mail-order and internet trade.

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“…Con respecto a la supervivencia de las frondas en Caulerpa prolifera, Terrados & Ross (1992) reportan que ésta es mayor en los meses cálidos (siete días) y menor durante los meses fríos (cuatro-séis días), lo cual encontraron que es similar a lo reportado en otros experimentos para diferentes especies de Caulerpa, en lo que respecta al crecimiento de las frondas y la tolerancia a la temperatura. Glardon et al (2008), West & West (2007) y Glasby & Gibson (2007) reportan que las especies de Caulerpa pueden vivir a temperaturas no menores de 15°C y no mayores de 30°C, aunque para el caso particular de C. taxifolia, se ha registrado que sobreviven a temperaturas no menores de 10°C.…”

Section: Discussionunclassified

Demografía de Caulerpa paspaloides var. wudermannii (Bryopsidales: Caulerpaceae) en la zona costera de Campeche, México

Fuentes

Gallegos

Mandujano

2014

RBT

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Demography of Caulerpa paspaloides var. wudermanni (Bryopsidales: Caulerpaceae) in the coastal zone of Campeche, México. The subaquatic vegetation of Los Petenes, Campeche, Mexico, stands out due to its considerable floristic diversity, composed of a great variety of sea grasses and several species of the genus Caulerpa sp. This is a genus of ecological relevance, with the invasive species in the Mediterranean, with negative impact on several native sub-aquatic plants; nevertheless, little is known about the demography and population dynamics of Caulerpa species and their contribution to food webs. Thus the main objective of this study was to describe the demographics of Caulerpa paspaloides var. wudermanni, using the number of stolons, complete and incomplete fronds, the diameter of the stolons and the biomass. The information was used to determine the growth rate (λ) of this species. The study was conducted in the Biosphere Reserve of Los Petenes, which is located in the Northwest of the state of Campeche. The submerged aquatic vegetation (SAV) in the Petenes Biosphere consists of monospecific and mixed populations of seagrass species (Thalassia testudinum, Halodule wrightii and Syringodium filiforme). Although chlorophytes, brown algae and red algae, are fundamental elements in the specific composition of the SAV in Petenes, several species of Caulerpa are prominent because of their coverage and abundance. In May and June of 2010, significant differences in the quantity of stolons, their diameter, incomplete and complete fronds, and the size of the stolons and rhizomes, were observed. In 2010, the finite population growth rate (λ) was 2.38±0.1571 for individuals and 1.20±0.1356 for the population, and in 2011 the values of λ were 1.80±0.3608 and 1.35±0.1571, respectively. From these results it can be concluded that the population is growing; however, growth is controlled by biotic and abiotic factors. Despite there was no apparent threat, we suggest continuing the demographic studies of C. paspaloides var. wurdemannii, as well as of other species of the same genus, not only to detect invasion or explosive growth, but also their presence indicated low oxygen levels and high sulphates. Rev. Biol. Trop. 62 (2): 729-741. Epub 2014 June 01.

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Limited evidence for increased cold-tolerance of invasive versus native Caulerpa taxifolia

Cited by 14 publications

References 24 publications

Comparing salinity tolerance in early stages of the sporophytes of a non-indigenous kelp (Undaria pinnatifida) and a native kelp (Saccharina latissima)

Comparing salinity tolerance in early stages of the sporophytes of a non-indigenous kelp (Undaria pinnatifida) and a native kelp (Saccharina latissima)

Characterization of the marine aquarium trade and management of associated marine pests in Australia, a country with stringent import biosecurity regulation

Demografía de Caulerpa paspaloides var. wudermannii (Bryopsidales: Caulerpaceae) en la zona costera de Campeche, México

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