Effects of temperature, salinity, and air exposure on development of the estuarine pulmonate gastropod Amphibola crenata

Pechenik, Jan A.; Marsden, Islay D.; Pechenik, Oliver

doi:10.1016/s0022-0981(03)00159-x

Cited by 41 publications

(35 citation statements)

References 24 publications

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“…Our findings were similar to previous work on other embryonic marine gastropods in showing slower development due to adverse environmental conditions, with previous studies demonstrating a significant impact of temperature, salinity, air exposure and solar radiation on rate of development (e.g. Pechenik et al 2003, Przeslawski 2005. However, our results and those for the sea urchins and oyster contrast with studies on Calanus finmarchicus, in which there was a CO 2 -related reduction in hatching rate but no effect on growth or egg production (Mayor et al 2007), and on another copepod Acartia tsuensis, in which there was no effect of CO 2 (2380 ppm) on developmental rate, survival, or body size (Kurihara & Ishimatsu 2008).…”

Section: Embryo Development Viability and Hatching Successsupporting

confidence: 92%

Subtle but significant effects of CO2 acidified seawater on embryos of the intertidal snail, Littorina obtusata

Ellis¹,

Bersey²,

Rundle³

et al. 2009

Aquat. Biol.

110

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Our understanding of the effects of ocean acidification on whole organism function is growing, but most current information is for adult stages of development. Here, we show the effects of reduced pH seawater (pH 7.6) on aspects of the development, physiology and behaviour of encapsulated embryos of the marine intertidal gastropod Littorina obtusata. We found reduced viability and increased development times under reduced pH conditions, and the embryos had significantly altered behaviours and physiologies. In acidified seawater, embryos spent more time stationary, had slower rotation rates, spent less time crawling, but increased their movement periodicity compared with those maintained under control conditions. Larval and adult heart rates were significantly lower in acidified seawater, and hatchling snails had an altered shell morphology (lateral length and spiral shell length) compared to control snails. Our findings show that ocean acidification may have multiple, subtle effects during the early development of marine animals that may have implications for their survival beyond those predicted using later life stages.

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Section: Embryo Development Viability and Hatching Successsupporting

confidence: 92%

Subtle but significant effects of CO2 acidified seawater on embryos of the intertidal snail, Littorina obtusata

Ellis¹,

Bersey²,

Rundle³

et al. 2009

Aquat. Biol.

110

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show abstract

“…Scale bars = 2 cm were also conducted to determine natural environmental conditions and embryonic mortality of the 2 species that spawn in dynamic habitats, S. denticulata and B. nanum. The potential risks of exposure to UVR and desiccation may be outweighed by faster developmental rate (Pechenik et al 2003, and it is hoped that results from the present study will clarify this trend and highlight reasons for selection of apparently risky spawning sites.…”

Section: Introductionmentioning

confidence: 77%

“…The few existing studies have linked desiccation to decreased encapsulation periods (Pechenik et al 2003) and increased mortality (Pechenik 1978, Creese 1980, Gosselin & Chia 1995, Yaroslavtseva et al 2001. UVR exposure and desiccation often occur concurrently during low tides, and research on bryophytes suggests that combined effects of UVR and desiccation exposure may be responsible for tolerance to these individual stressors (Takacs et al 1999).…”

Section: Introductionmentioning

confidence: 99%

Combined effects of solar radiation and desiccation on the mortality and development of encapsulated embryos of rocky shore gastropods

Przeslawski¹

2005

Mar. Ecol. Prog. Ser.

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Intertidal encapsulated embryos may be synchronously exposed to many environmental stressors, but interactions between some of these factors remain poorly understood. Here, the effects of solar radiation and desiccation on embryonic mortality and developmental rates were assessed using laboratory and field experiments. Egg masses of 3 intertidal gastropod species were exposed for 72 h to combinations of spectral (full spectrum, UV-blocked, dark) and daily emersion treatments (control, 15, 30, 60 min). Siphonaria denticulata and Bembicium nanum embryos were expected to be tolerant to emersion and UVR as they are routinely deposited on exposed rock platforms. In contrast, Dolabrifera brazieri embryos were predicted to be vulnerable to these stressors, as they are deposited in shaded, submerged habitats. Laboratory experiments revealed that light treatments and desiccation negatively affected the mortality and developmental rate of D. brazieri. The mortality of B. nanum did not significantly increase after UVR exposure or emersion, and the developmental rate was significantly faster in light treatments than in the dark. Surprisingly, embryonic mortality of S. denticulata was significantly higher in UV-blocked treatments than in full-spectrum treatments after 60 min emersion periods, but neither spectral treatments nor desiccation periods affected developmental rates. Field observations were also conducted to investigate the natural effects of desiccation on the embryonic mortality of S. denticulata and B. nanum. Despite the apparent resistance of these embryos to UVR and desiccation in the laboratory, mortality was significantly higher in desiccated habitats than in submerged habitats in the field, thus suggesting that selection of these spawning sites may not be optimal for embryos, particularly in light of global change. KEY WORDS: Mollusc · Marine invertebrate · Spawning habitat · Intertidal · Larvae · EncapsulationResale or republication not permitted without written consent of the publisher

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“…Duration of larval period varies significantly and in any one species depends upon multiple environmental factors, i.e. temperature, salinity and nutrition regimes (see Miller and Hadfield, 1990;Pechenik et al, 1996;Pechenik et al, 2002a;Pechenik et al, 2003). Far less is known about developmental roles of conspecific signalling.…”

Section: Introductionmentioning

confidence: 99%

Apical sensory neurones mediate developmental retardation induced by conspecific environmental stimuli in freshwater pulmonate snails

2004

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Effects of temperature, salinity, and air exposure on development of the estuarine pulmonate gastropod Amphibola crenata

Cited by 41 publications

References 24 publications

Subtle but significant effects of CO2 acidified seawater on embryos of the intertidal snail, Littorina obtusata

Subtle but significant effects of CO2 acidified seawater on embryos of the intertidal snail, Littorina obtusata

Combined effects of solar radiation and desiccation on the mortality and development of encapsulated embryos of rocky shore gastropods

Apical sensory neurones mediate developmental retardation induced by conspecific environmental stimuli in freshwater pulmonate snails

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