Maternal variability in the blacklip abalone, Haliotis rubra leach (Mollusca: Gastropoda): effect of egg size on fertilisation success

Huchette, Sylvain; Soulard, Justine; Koh, C.S; Day, Robert W.

doi:10.1016/j.aquaculture.2003.08.027

Cited by 18 publications

(10 citation statements)

References 37 publications

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“…), while larger egg or oogonia size increases offspring fitness in invertebrates (Huchette et al. ) and bryophytes (Glime and Bisang ). Larger oogonia also likely increases the probability of fertilization success due to increased chances of antherozoids‐oogonia encounters similar to egg size effects in broadcast spawning invertebrates (Levitan ), or larger pheromone chemical volume released (Lüning and Müller ).…”

Section: Discussionmentioning

confidence: 99%

“…Although family-level variation in traits was determined from microscopic stages only, these traits may have important functional implications in response to climate change. Thallus size is generally a strong predictor of important fitness traits, such as the amount of reproductive tissue (Mabin et al 2013), while larger egg or oogonia size increases offspring fitness in invertebrates (Huchette et al 2004) and bryophytes (Glime and Bisang 2014). Larger oogonia also likely increases the probability of fertilization success due to increased chances of antherozoids-oogonia encounters similar to egg size effects in broadcast spawning invertebrates (Levitan 2006), or larger pheromone chemical volume released (L€ uning and M€ uller 1978).…”

Section: Discussionmentioning

confidence: 99%

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Family‐level variation in early life‐cycle traits of kelp

Mabin

Johnson

Wright

2019

Journal of Phycology

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Temperate kelp forests (Laminarians) are threatened by temperature stress due to ocean warming and photoinhibition due to increased light associated with canopy loss. However, the potential for evolutionary adaptation in kelp to rapid climate change is not well known. This study examined family‐level variation in physiological and photosynthetic traits in the early life‐cycle stages of the ecologically important Australasian kelp Ecklonia radiata and the response of E. radiata families to different temperature and light environments using a family × environment design. There was strong family‐level variation in traits relating to morphology (surface area measures, branch length, branch count) and photosynthetic performance (Fv/Fm) in both haploid (gametophyte) and diploid (sporophyte) stages of the life‐cycle. Additionally, the presence of family × environment interactions showed that offspring from different families respond differently to temperature and light in the branch length of male gametophytes and oogonia surface area of female gametophytes. Negative responses to high temperatures were stronger for females vs. males. Our findings suggest E. radiata may be able to respond adaptively to climate change but studies partitioning the narrow vs. broad sense components of heritable variation are needed to establish the evolutionary potential of E. radiata to adapt under climate change.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Family‐level variation in early life‐cycle traits of kelp

Mabin

Johnson

Wright

2019

Journal of Phycology

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“…Understanding the impacts of rising temperature on fertilization rates is important not only for predicting impacts of climate change on marine broadcast spawners, but could inform practices and management for both marine biofouling and the aquaculture industry (Elliott ; Huchette et al. ).…”

Section: Introductionmentioning

confidence: 99%

“…We can, however, determine whether thermal stress affects male-female interactions; a reduction in the ability of gametes to signal or detect compatibility may disrupt mechanisms maintaining heritable variation in fitness traits within populations (Tregenza and Wedell 2000;Puurtinen et al 2005). Understanding the impacts of rising temperature on fertilization rates is important not only for predicting impacts of climate change on marine broadcast spawners, but could inform practices and management for both marine biofouling and the aquaculture industry (Elliott 2000;Huchette et al 2004).…”

Section: Introductionmentioning

confidence: 99%

Plasticity of fertilization rates under varying temperature in the broadcast spawning mussel,Mytilus galloprovincialis

Eads

Evans

Kennington

2016

Ecology and Evolution

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Oceans are a huge sink for the increased heat associated with anthropogenic climate change, and it is vital to understand the heat tolerance of marine organisms at all life stages to accurately predict species’ responses. In broadcast spawning marine invertebrates, reproduction is a vulnerable process in which sperm and eggs are released directly into the open water. Gametes are then exposed to fluctuating environmental conditions that may impact their fertilizing capacity. Using the broadcast spawning Mediterranean mussel, Mytilus galloprovincialis, as a model species, we performed blocks of factorial mating crosses to assess the variance in fertilization rates among individuals under both ambient and elevated temperatures. Overall, we found a small, but significant decline in fertilization rates with elevated temperatures. However, there was substantial plasticity in responses, with particular mussels having increased fertilization under elevated temperatures, although the majority showed decreased fertilization rates. Our results suggest possible future reproductive costs to ocean warming in M. galloprovincialis, although it is also possible that genetic variation for thermal sensitivity may allow for adaptation to changing environmental conditions.

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“…Causes for low rates of reproductive success are complex and can occur at various stages of the reproductive cascade, from spawning to juvenile survival. Among others, they can include factors that influence spawning (Grubert et al 2005, Nuurai et al 2010), a lack of synchronicity of spawning in males and females (Grubert et al 2005), factors that influence fertilization rates (Encena et al 1998, Babcock & Keesing 1999, Huchette et al 2004, Grubert et al 2005, Suphamungmee et al 2010, or factors that influence postlarval survival (Takami et al 2002, Lucas et al 2006. The consequence of decreased reproductive success is a lower number of surviving families, which limits the number of source families when selecting parents for the next generation.…”

Section: Introductionmentioning

confidence: 99%

Can Greenlip (Haliotis laevigata) Abalone Breeding Programs Tolerate Fluctuations in Reproductive Performance?

Dominik

Henshall

Kube

et al. 2013

Journal of Shellfish Research

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Fluctuations in reproductive performance (i.e., spawning success, hatching rate, larval survival) are a common occurrence in abalone breeding programs, in particular during the early stages of their development. Such fluctuations affect the numbers of families available for progeny testing and selection, and can have consequences for genetic gains and inbreeding. We used stochastic computer simulations to understand how genetic gains and levels of inbreeding are affected when greenlip (Haliotis laevigata) breeding programs encounter varying severity and frequency of reproductive failure. We simulated breeding programs for greenlip abalone with both conservative and aggressive selection approaches over 35 y (10 generations). Without reproductive failure, genetic improvements of 36%-55% could be achieved after 10 y of selection in a single trait in a commercial abalone breeding program with a conservative selection approach, and gains of twice that could be achieved with a selection approach that allowed high rates of inbreeding. A conservative selection approach would be sustainable even at high rates of reproductive failure, whereas a more aggressive approach would lead to nearly twice the recommended level of inbreeding. It was concluded that breeding programs for greenlip abalone may be buffered against unexpected fluctuations in reproductive performance if the selection approach is chosen strategically.

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Maternal variability in the blacklip abalone, Haliotis rubra leach (Mollusca: Gastropoda): effect of egg size on fertilisation success

Cited by 18 publications

References 37 publications

Family‐level variation in early life‐cycle traits of kelp

Family‐level variation in early life‐cycle traits of kelp

Plasticity of fertilization rates under varying temperature in the broadcast spawning mussel,Mytilus galloprovincialis

Can Greenlip (Haliotis laevigata) Abalone Breeding Programs Tolerate Fluctuations in Reproductive Performance?

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