Egg Size, Larval Development, and Juvenile Size in Benthic Marine Invertebrates

1977 ◽  
Vol 111 (978) ◽  
pp. 373-376 ◽  
Author(s):  
Richard R. Strathmann
Keyword(s):  
Larval Development ◽  
Egg Size ◽  
Marine Invertebrates

scholarly journals Effects of Glyphosate-Based and Derived Products on Sea Urchin Larval Development

2020 ◽  
Vol 8 (9) ◽  
pp. 661
Author(s):  
Davide Asnicar ◽  
Costanza Cappelli ◽  
Ahmad Safuan Sallehuddin ◽  
Nur Atiqah Maznan ◽  
Maria Gabriella Marin
Keyword(s):  
Larval Development ◽  
Sea Urchin ◽  
Marine Invertebrates ◽  
Parent Compound ◽  
Paracentrotus Lividus ◽  
Marine Species ◽  
Negative Effects ◽  
Aminomethylphosphonic Acid ◽  
Main Degradation Product ◽  
Herbicide Glyphosate

Despite the widespread use of herbicide glyphosate in cultivation, its extensive runoff into rivers and to coastal areas, and the persistence of this chemical and its main degradation product (aminomethylphosphonic acid, AMPA) in the environment, there is still little information on the potential negative effects of glyphosate, its commercial formulation Roundup® and AMPA on marine species. This study was conducted with the aim of providing a comparative evaluation of the effects of glyphosate-based and its derived chemicals on the larval development of the sea urchin Paracentrotus lividus, thus providing new data to describe the potential ecotoxicity of these contaminants. In particular, the effects on larval development, growth and metabolism were assessed during 48 h of exposure from the time of egg fertilization. The results confirm that AMPA and its parent compound, glyphosate have similar toxicity, as observed in other marine invertebrates. However, interestingly, the Roundup® formulation seemed to be less toxic than the glyphosate alone.

The Importance of Sperm Limitation to the Evolution of Egg Size in Marine Invertebrates

1993 ◽  
Vol 141 (4) ◽  
pp. 517-536 ◽  
Author(s):  
Don R. Levitan
Keyword(s):  
Egg Size ◽  
Marine Invertebrates ◽  
Sperm Limitation

scholarly journals Bacterial community dynamics during embryonic and larval development of three confamilial echinoids

2018 ◽  
Author(s):  
Tyler J. Carrier ◽  
Adam M. Reitzel
Keyword(s):  
Bacterial Community ◽  
Larval Development ◽  
Bacterial Communities ◽  
Community Dynamics ◽  
Marine Invertebrates ◽  
Sea Urchins ◽  
Larval Feeding ◽  
Bacterial Community Dynamics ◽  
Future Work ◽  
Embryonic And Larval Development

ABSTRACTDevelopment of some animals is influenced by and, in some cases, dependent on the associated microbiota. The timing of when associated bacterial communities are established during the development of marine invertebrates and their subsequent dynamics across stages are known for only a few species. Here, we compare the bacterial communities of three confamilial echinoids from egg to juvenile using sequence-based approaches. Bacterial communities are established on unfertilized eggs and change gradually during embryonic and larval development. Despite the differences amongst these pre-metamorphic stages, approximately thirty-percent of OTUs identified in association with unfertilized egg were present in the juveniles. During embryonic development, host-associated communities diverged from the environmental microbiota but later converged following the onset of larval feeding. Taken together, the data presented here support the hypothesis that bacterial communities are established prior to fertilization and community composition shifts gradually thereafter, all while remaining distinct from the environment. Future work will need to determine the relative influence of the host and bacteria-bacteria interactions in shaping the associated bacterial community to determine the potential functional importance of bacteria during the development of larval sea urchins and benthic marine invertebrates more broadly.

scholarly journals Transgenerational effects of UV-B radiation on egg size, fertilization, hatching and larval size of sea urchins Strongylocentrotus intermedius

PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e7598
Author(s):  
Jingyun Ding ◽  
Lingling Zhang ◽  
Jiangnan Sun ◽  
Dongtao Shi ◽  
Xiaomei Chi ◽  
...  
Keyword(s):  
Egg Size ◽  
Marine Invertebrates ◽  
Sea Urchins ◽  
Marine Invertebrate ◽  
Ultraviolet B ◽  
Hatching Rate ◽  
Strongylocentrotus Intermedius ◽  
Transgenerational Effects ◽  
Larval Size ◽  
First Time

Transgenerational effects are important for phenotypic plasticity and adaptation of marine invertebrates in the changing ocean. Ultraviolet-B (UV-B) radiation is an increasing threat to marine invertebrates. For the first time, we reported positive and negative transgenerational effects of UV-B radiation on egg size, fertilization, hatchability and larval size of a marine invertebrate. Strongylocentrotus intermedius exposed to UV-B radiation showed positive transgenerational effects and adaptation on egg size, hatching rate and post-oral arm length of larvae. Negative transgenerational effects were found in body length, stomach length and stomach width of larvae whose parents were exposed to UV-B radiation. Sires probably play important roles in transgenerational effects of UV-B. The present study provides valuable information into transgenerational effects of UV-B radiation on fitness related traits of sea urchins (at least Strongylocentrotus intermedius).

Correlated evolution of larval development, egg size, and genome size across two genera of snapping shrimp

2021 ◽  
Author(s):  
Kristin M. Hultgren ◽  
S.T.C. Chak ◽  
J. Bjelajac ◽  
K.S. Macdonald
Keyword(s):  
Larval Development ◽  
Genome Size ◽  
Egg Size ◽  
Correlated Evolution ◽  
Snapping Shrimp

Egg Size as a Life History Character of Marine Invertebrates: Is It All It's Cracked Up to Be?

2009 ◽  
Vol 216 (3) ◽  
pp. 226-242 ◽  
Author(s):  
Amy L. Moran ◽  
Justin S. McAlister
Keyword(s):  
Life History ◽  
Egg Size ◽  
Marine Invertebrates

What do egg size distributions in marine invertebrates tell us about validity of fecundity-time models?

2013 ◽  
Vol 35 (2) ◽  
pp. 249-253 ◽  
Author(s):  
Elena K. Kupriyanova
Keyword(s):  
Egg Size ◽  
Marine Invertebrates ◽  
Size Distributions

Prefeeding larval development time is not correlated with egg size in regular echinoids (Strongylocentrotusspecies)

1989 ◽  
Vol 15 (3) ◽  
pp. 229-232 ◽  
Author(s):  
LAUREN DICKIE ◽  
MICHAEL HART ◽  
RICHARD HELLING
Keyword(s):  
Larval Development ◽  
Egg Size ◽  
Development Time
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