A larval-settlement assay method for the gregarious serpulid polychaete, Galeolaria caespitosa

Watson, Matthew G.; Scardino, Andrew J.; Zalizniak, Liliana; Shimeta, Jeff

doi:10.1016/j.jembe.2017.08.003

Cited by 3 publications

(2 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Despite evidence that the strength of postzygotic barriers may change through development (e.g., Álvarez & Garcia-Vazquez, 2011; Bundus et al, 2015), few studies have tested barriers across complete life cycles, and even fewer have tested barriers from one generation to the next, as necessary to infer hybrid breakdown (but see Hwang et al 2016; Willett & Burton, 2003). This may speak to difficulties in rearing many species in vitro , as is the case for Galeolaria (Watson et al, 2017). Consequently, we could not trace offspring to maturity in this study.…”

Section: Discussionmentioning

confidence: 99%

Temperature and sex shape reproductive barriers in a climate change hotspot

Gallegos

Hodgins

Monro

2023

Preprint

View full text Add to dashboard Cite

Climate change is shifting species ranges and altering reproductive interactions within those ranges, offering closely-related species new scope to mate and potentially hybridize. Predicting hybridization and its outcomes requires assessing the interplay of biological and climatic factors that mediate reproductive barriers across life stages. However, few studies have done so across the range of environments that parents and offspring potentially encounter in nature, as is crucial to understand the environmental sensitivity of reproductive isolation and its fate under climate change. We set out to assess prezygotic and postzygotic reproductive barriers, and their dependence on temperature and sex, in sister species of a marine tubeworm (Galeolaria) from a sentinel region for climate change impacts in southern Australia. We performed reciprocal crosses within- and between-species using replicate populations, and assessed fertility of crosses, survival of embryos, and survival of larvae, at five temperatures spanning the thermal ranges of populations in nature. We found that barriers were weak and independent of temperature at fertilization, but stronger and more temperature-sensitive at larval development, as species diverged in thermal tolerance. Barriers were asymmetric between reciprocal hybrids, moreover, suggesting a complex interplay between thermal adaptation in parental lineages and maternal inheritance of factors (e.g., mitochondria, endosymbionts) that influence hybrid viability across temperatures. Together, our findings provide new insights into the roles of temperature and sex in reproductive barriers across early life stages, and point to shifting strengths of reproductive isolation in future climates.

show abstract

Section: Discussionmentioning

confidence: 99%

Temperature and sex shape reproductive barriers in a climate change hotspot

Gallegos

Hodgins

Monro

2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Similarly, Octopus spp. paralarvae may last in a planktonic phase until appropriate environments are reached 9 , and various invertebrates developed the ability to recognize chemical 1 , biological 10–13 or physical signals 14,15 to identify appropriate substrates for settlement 4 or the presence of adults of their own species 16 .…”

Section: Introductionmentioning

confidence: 99%

Inducers of settlement and metamorphosis of the shrimp Hippolyte inermis Leach in Posidonia oceanica

Zupo

Mutalipassi

Glaviano

et al. 2019

Sci Rep

View full text Add to dashboard Cite

Larvae of the caridean shrimp Hippolyte inermis persist in the plankton of the Mediterranean up to about one month. Since they need to reach appropriate coastal areas for their recruitment in seagrass meadows, we hypothesized that leaves of Posidonia oceanica or, alternatively, algae present in their epiphytic biofilms, might be physically recognised as target substrates and trigger larval metamorphosis and settlement. Chemical cues could improve the finding of suitable habitats for settlement. Thus, the effects of leaves of P. oceanica and biofilms of the diatom Cocconeis scutellum parva , seasonally abundant in the leaf epiphytic stratum, were investigated along with the effect of volatile organic compounds (VOCs) extracted from the epiphytic diatom. The physical induction with P. oceanica accelerated larval settlement, stimulating an earlier and faster metamorphosis of larvae. C. scutellum parva produced a weaker effect on settlement; however, diatom’s VOCs had evident influence and accelerated metamorphosis and settlement. We concluded that such chemical cues as the VOCs produced by epiphytic diatoms, reinforce the effect of physical cues for the identification of suitable settlement locations for this shrimp.

show abstract

Fundamental Niche Narrows through Larval Stages of a Filter-Feeding Marine Invertebrate

Richardson

Marshall

2023

The Biological Bulletin

View full text Add to dashboard Cite

A larval-settlement assay method for the gregarious serpulid polychaete, Galeolaria caespitosa

Cited by 3 publications

References 30 publications

Temperature and sex shape reproductive barriers in a climate change hotspot

Temperature and sex shape reproductive barriers in a climate change hotspot

Inducers of settlement and metamorphosis of the shrimp Hippolyte inermis Leach in Posidonia oceanica

Fundamental Niche Narrows through Larval Stages of a Filter-Feeding Marine Invertebrate

Contact Info

Product

Resources

About