Decrypting corals: Does regulatory evolution underlie environmental specialization of coral cryptic lineages? DOI Creative Commons
Dominique N. Gallery, John P. Rippe, Mikhail V. Matz

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2023, Volume and Issue: unknown

Published: Oct. 13, 2023

Abstract A recent study has shown that two common Caribbean corals, Montastrea cavernosa and Siderastrea siderea , in the Florida Keys each consist of four genetically distinct lineages. These lineages are strongly specialized to a certain depth and, lesser extent, nearshore or offshore habitat. We hypothesized lineages’ environmental specialization is at least part due regulatory evolution, which would be manifested as emergence groups coregulated genes (“modules”) demonstrating lineage-specific responses different reef environments. Our hypothesis also predicted belonging such modules show greater genetic divergence between than other genes. Contrary these expectations, cryptic natural variation were essentially same genome-wide gene coexpression network level. Moreover, none identified exhibit elevated between-lineage divergence. The must, therefore, come from relatively subtle adjustments function regulation not detectable level and/or involve constituents coral holobiont rather host.

Language: Английский

Exploring the Pocillopora cryptic diversity: a new genetic lineage in the Western Indian Ocean or remnants from an ancient one? DOI
Nicolas Oury,

Pauline Gélin,

Mamy RAJAONARIVELO

et al.

Marine Biodiversity, Journal Year: 2021, Volume and Issue: 52(1)

Published: Dec. 28, 2021

Language: Английский

Citations

6
Perspectives on the Grey Zone of Species Delimitation With Notes on Invertebrates in the Marine Environment DOI Creative Commons
Catalina Ramírez‐Portilla, Andrea M. Quattrini

Bulletin of the Society of Systematic Biologists, Journal Year: 2023, Volume and Issue: 2(2), P. 1 - 23

Published: Oct. 4, 2023

Defining species boundaries, or delimiting species, is a complex and often difficult task. Indeed, when such studies incorporate approaches that consider evolutionary mechanisms, there much to be learned about diversity how the processes play critical roles in speciation can impact delineation. In 2021, virtual workshop on delimitation was held at Smithsonian Institution National Museum of Natural History train natural history scientists taxonomists appropriate analytical tools used help delimit using molecular data. This perspective highlights some main themes discussed during while detailing three challenge any study. Specifically, we discuss incomplete lineage sorting, gene flow, population structure boundaries We highlight empirical methodological have successfully met these challenges under various scenarios. Finally, provide recommendations considerations for undertaking variety taxa. To this end, recommend fully embrace process-based delimitation, which important insights into their study systems. For those developing approaches, hope they incorporating less well-known taxa, as marine invertebrates, method testing. Marine invertebrates encompass many dark taxa across tree life yet represent majority animal phyla, are vulnerable extinction due global ocean change. Thus, advancing address taxonomic revisions organisms will support conservation decisions keystone ecosystems. Furthermore, strategies, lack obvious barriers flow environment, occurrence isolated habitat patches better inform our knowledge role generating nature.

Language: Английский

Citations

2
Pocillopora meandrinadaytime broadcast spawning in Moorea, French Polynesia DOI Creative Commons

Pierrick Harnay,

AM Turner,

Scott C. Burgess

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2023, Volume and Issue: unknown

Published: Oct. 6, 2023

Abstract Knowledge of when corals release gametes is fundamentally important for understanding reef ecology and evolution, but further research needed to document patterns at the species level in a broader range taxa. In Mo’orea (17°32′S 149°50′W), French Polynesia, were decimated by crown-of-thorns cyclone between 2007-2010, Pocillopora spp. recruitment primarily drove recovery over following decade. Furthermore, recent has identified that community composed six morphologically-cryptic species. Spawning times genetically-verified are undocumented scientific literature. To address this gap, we conducted situ surveys total 89 days during September 2022 - January 2023 October 2024. For observed spawning, used molecular analysis mtORF PocHistone markers identify We documented synchronized lagoon spawning P. meandrina 2-3 full moon December (06:16-06:32, 06:21-06:35), few colonies (06:22-06:38) single colony November (06:32). contrast, sister verrucosa tuahiniensis spawned around new moons 2023. These species’ overlapped one day after moon, tended on earlier (∼05:45 06:15), whereas 1 3 later (∼06:30 06:50), only cf. effusa (+3 ∼06:30 06:50). Collectively, these first reported observations provide an initial documentation (to our knowledge), expanding indigenous knowledge increasing capacity study essential, yet environmentally sensitive, process coral reproduction critical building Polynesia.

Language: Английский

Citations

2
More than What Meets the Eye: Differential Spatiotemporal Distribution of Cryptic Intertidal Bangiales DOI Creative Commons
Fernanda Cid-Alda, Nelson Valdivia, Marie‐Laure Guillemin

et al.

Plants, Journal Year: 2022, Volume and Issue: 11(5), P. 605 - 605

Published: Feb. 24, 2022

Morphologically similar but genetically distinct species have been termed cryptic and most assumed to be ecologically similar. However, if these co-occur at a certain spatial scale, some niche differences finer scales should expected allow for coexistence. Here, we demonstrate the existence of disjointed distribution bladed Bangiales along (intertidal elevations) temporal (seasons) environmental gradients. Bladed were identified quantified across four intertidal elevations seasons one year, five rocky sites (between 39° S 43° S) in southern Chile. Species determination was based on partial sequences mitochondrial cytochrome c oxidase 1 (COI) gene amplification. To assess gross morphology, thallus shape, color, maximum length width recorded. Hundreds organisms classified into nine belonging three genera (i.e., Fuscifolium, Porphyra, Pyropia), including frequent (>97% specimens) infrequent species. All species, except Pyropia saldanhae, had previously reported coasts The shape color very variable, large overlap supported status Multivariate analyses showed that main variable affecting composition elevation. such as Py. orbicularis more abundant low mid zones, while others, Po. mumfordii sp. FIH, principally observed high spray elevations. Despite all numerically dominant being present year long, slight effect seasonal variation also detected. These results strongly support partitioning Chilean zone.

Language: Английский

Citations

3
Decrypting corals: Does regulatory evolution underlie environmental specialization of coral cryptic lineages? DOI Creative Commons
Dominique N. Gallery, John P. Rippe, Mikhail V. Matz

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2023, Volume and Issue: unknown

Published: Oct. 13, 2023

Abstract A recent study has shown that two common Caribbean corals, Montastrea cavernosa and Siderastrea siderea , in the Florida Keys each consist of four genetically distinct lineages. These lineages are strongly specialized to a certain depth and, lesser extent, nearshore or offshore habitat. We hypothesized lineages’ environmental specialization is at least part due regulatory evolution, which would be manifested as emergence groups coregulated genes (“modules”) demonstrating lineage-specific responses different reef environments. Our hypothesis also predicted belonging such modules show greater genetic divergence between than other genes. Contrary these expectations, cryptic natural variation were essentially same genome-wide gene coexpression network level. Moreover, none identified exhibit elevated between-lineage divergence. The must, therefore, come from relatively subtle adjustments function regulation not detectable level and/or involve constituents coral holobiont rather host.

Language: Английский

Citations

1