In situ estimation of active dispersal abilities in reef fish early life stages using tracking technologies DOI Creative Commons
Eliot Ruiz, Pierre‐Yves Pascal, Lucie Vanalderweireldt

et al.

Methods in Ecology and Evolution, Journal Year: 2025, Volume and Issue: unknown

Published: March 14, 2025

Abstract Most reef fishes possess an early pelagic stage that ensures the crucial role of maintaining connectivity between distant populations, as movements older demersal stages are generally restricted. While classically considered passive, numerous studies show most larvae largely influence dispersion scale and settlement rate by actively swimming horizontally/vertically in oriented way during their phase. Laboratory measurements active dispersal skills differ from natural behaviors individuals observed divers manually annotating depth bearing every 30 s, while carrying a low‐speed flowmeter to estimate average speed. Here, we improved this protocol through use electronic measurement devices achieve enhanced feasibility, replicability, efficiency, safety. Bearing could be precisely measured at high frequencies using logger fixed on optimized diving tray, which allowed us reduce tracking duration 10 5 min, track more individuals. It also permitted studying situ temporal dynamics vertical speed direction changes. All further steps, including data entry, sensor calibration, circular statistics 3D reconstruction (Madwick filter), were automated within interactive pipelines, enabling obtain results 3 h after dives fieldwork. We conducted trackings for diversified set species (32 per ocean) developments Caribbean (Guadeloupe), before being routinely applied Indian Ocean (Maldives) with majority successfully carried out (74%) despite offshore conditions. High individual orientation accuracy, combined great swimming/sinking abilities possibly dependent depth/current, suggests larvae/juveniles can swim correlated random‐walk (CRW). This occurs even when cues too scarce consistent among species/zones emerge (biased CRW), marking difference behavior coastal environment. Although biophysical models ease development informed conservation strategies large spatial scales, comparisons genetic demonstrate only incorporating realistic yield comparable outputs. Our methodological advances overcome various obstacles preventing parameters necessary models, not fishes, but any small organism aquatic habitat.

Language: Английский

Spatial coalescent connectivity through multi-generation dispersal modelling predicts gene flow across marine phyla DOI Creative Commons
Térence Legrand, Anne Chenuil, Enrico Ser‐Giacomi

et al.

Nature Communications, Journal Year: 2022, Volume and Issue: 13(1)

Published: Oct. 4, 2022

Abstract Gene flow governs the contemporary spatial structure and dynamic of populations as well their long-term evolution. For species that disperse using atmospheric or oceanic flows, biophysical models allow predicting migratory component gene flow, which facilitates interpretation broad-scale inferred from observed allele frequencies among populations. However, frequent mismatches between dispersal estimates genetic diversity prevent an operational synthesis for eco-evolutionary projections. Here we use extensive compilation 58 population studies 47 phylogenetically divergent marine sedentary over Mediterranean basin to assess how differentiation is predicted by Isolation-By-Distance, single-generation multi-generation models. Unlike previous approaches, latter unveil explicit parents-to-offspring links (filial connectivity) implicit siblings a common ancestor (coalescent connectivity). We find almost 70 % variance in explained coalescent connectivity multiple generations, significantly outperforming other Our results offer great promises untangle forces shape anticipate climate-driven redistributions, altogether improving conservation planning.

Language: Английский

Citations

24
Fine‐scale seascape genomics of an exploited marine species, the common cockle Cerastoderma edule, using a multimodelling approach DOI Creative Commons
Ilaria Coscia,

Sophie B. Wilmes,

Joseph E. Ironside

et al.

Evolutionary Applications, Journal Year: 2020, Volume and Issue: 13(8), P. 1854 - 1867

Published: Feb. 10, 2020

Population dynamics of marine species that are sessile as adults driven by oceanographic dispersal larvae from spawning to nursery grounds. This is mediated life-history traits such the timing and frequency spawning, larval behaviour duration, settlement success. Here, we use 1725 single nucleotide polymorphisms (SNPs) study fine-scale spatial genetic structure in commercially important cockle

Language: Английский

Citations

39
Seascape Genomics: Contextualizing Adaptive and Neutral Genomic Variation in the Ocean Environment DOI
Libby Liggins, Eric A. Treml, Cynthia Riginos

et al.

Population genomics, Journal Year: 2019, Volume and Issue: unknown, P. 171 - 218

Published: Jan. 1, 2019

Language: Английский

Citations

37
Quantifying dispersal variability among nearshore marine populations DOI
Katrina A. Catalano, Allison G. Dedrick,

Michelle R. Stuart

et al.

Molecular Ecology, Journal Year: 2020, Volume and Issue: 30(10), P. 2366 - 2377

Published: Nov. 16, 2020

Dispersal drives diverse processes from population persistence to community dynamics. However, the amount of temporal variation in dispersal and its consequences for metapopulation dynamics is largely unknown organisms with environmentally driven (e.g., many marine larvae, arthropods plant seeds). Here, we used genetic parentage analysis detect larval events a common coral reef fish, Amphiprion clarkii, along 30 km coastline consisting 19 patches Ormoc Bay, Leyte, Philippines. We quantified kernel across seven years (2012-2018) monsoon seasons 71 assignments 791 recruits 1,729 adults. Connectivity patterns differed significantly among scale shape but not direction dispersal. This interannual kernels introduced positive covariance routes that theory predicts likely reduce stochastic growth rates below expected only single or time-averaged connectivity estimate. The extent mean distance observed here comparable magnitude differences fish species. Considering will be an important avenue further metacommunity research taxa.

Language: Английский

Citations

35
Local connections and the larval competency strongly influence marine metapopulation persistence DOI Creative Commons
Giorgia Cecino, Eric A. Treml

Ecological Applications, Journal Year: 2021, Volume and Issue: 31(4)

Published: Feb. 10, 2021

Abstract The relationship between metapopulation stability and connectivity has long been investigated in ecology, however, most of these studies are focused on theoretical species habitat networks, having limited ability to capture the complexity real‐world metapopulations. Network analysis became more important modeling connectivity, but it is still uncertain which network metrics reliable predictors persistence. Here we quantify impact larval life history marine persistence across complex seascape southeast Australia. Our work coupled network‐based approaches eigenanalysis efficiently estimate metapopulation‐wide subpopulation contributions. Larval dispersal models were used species‐specific for five fisheries species, each summarized as a migration matrix. Eigenanalysis helped reveal determine importance node‐level properties. Across metapopulations, number local outgoing connections was found have largest persistence, implying hub subpopulations may be influential Results also suggest length pre‐competency period parameter Finally, identified two major hot spots Australia, contributing strongly multispecies Managers ecologists would benefit by employing similar making efficient ecologically informed decisions focusing patterns competency characteristics better understand protect Practically this could mean developing protected areas at shorter distances supporting collaborative research into early histories interest.

Language: Английский

Citations

29
Larval Dispersal Modeling Reveals Low Connectivity among National Marine Protected Areas in the Yellow and East China Seas DOI Creative Commons
Jiaying Lu, Yuanjie Chen, Zihan Wang

et al.

Biology, Journal Year: 2023, Volume and Issue: 12(3), P. 396 - 396

Published: March 2, 2023

Marine protected areas (MPAs) are vital for protecting biodiversity, maintaining ecosystem integrity, and tackling future climate change. The effectiveness of MPA networks relies on connectivity, yet connectivity assessments often skipped in the planning process. Here we employed a multi-species biophysical model to examine patterns formed among 21 national MPAs Yellow East China Seas. We simulated potential larval dispersal 14 oviparous species five classes. Larvae non-migratory with pelagic duration (PLD) were assumed be passive floating particles no explicit vertical migration. A total 217,000 released according spawning period, living depth, distribution, they move currents during PLD. Most larvae dispersed around (0-60 m isobaths) consistent currents. Larval export increased PLD current velocity, but if was too long, few survived due high daily mortality dispersal. overall pattern exhibited north-to-south trend corresponding coastal Our results indicated that Seas did not form well-connected network nearly 30% them isolated. These three distinct groups, one Sea ecoregion two ecoregion. Four (all Zhejiang) emerged as key nodes ensuring multi-generational connectivity. Under pressure change, self-recruitment low present significant challenges building networks. suggest adding new stepping stones bioecological corridors. Focused protection could have good effect southern part population recruitment downstream. Conservation management should adjusted life cycles distributions vulnerable species, well seasonal changes This study provides scientific basis improving ecological conservation

Language: Английский

Citations

12
Marine spatial planning for connectivity and conservation through ecological corridors between marine protected areas and other effective area-based conservation measures DOI Creative Commons
Cinzia Podda, Erika M. D. Porporato

Frontiers in Marine Science, Journal Year: 2023, Volume and Issue: 10

Published: Oct. 5, 2023

Maritime Spatial Planning (MSP) promotes the sustainable human activities development and uses in marine space, playing a role their effective management. The enhancement of connectivity is crucial for conservation biodiversity landscape planning. Ecological Corridors (ECs) are an important type fragmented habitats. EU Biodiversity Strategy 2030 includes ECs into network protected areas allows creation additional areas. MSP studies considering remain still lacking, especially design networks between Marine Protected Areas (MPAs) Other Effective area-based Conservation Measures (OECMs). In this paper, knowledge, tools investigating were reviewed, with systematic bibliometric analysis to summarize current scientific research. Previous integrating ecological planning have focused on models larval dispersal, adult movements, dispersal single species by using benthic habitat proxies. Few found environments: coral Caribbean reef systems Gulf Mexico; within habitats along Pacific coast Canada; MPAs British Columbia (Canada); analyzing migratory Yangtze estuary (China). Commonly used approaches project map environments least-cost circuit theories allowing incorporate movement cost or resistance movement, depending preferred returned 25 studies, most which from North America (40%) European countries (36%) largest share papers (68%) 2018 2022. This review pinpointed need different disciplines investigate policymakers practitioners recognize importance connectivity, even there significant challenges policies, planning, conservation.

Language: Английский

Citations

12
Ontogeny of larval swimming abilities in three species of coral reef fishes and a hypothesis for their impact on the spatial scale of dispersal DOI
John E. Majoris, Katrina A. Catalano,

Derek Scolaro

et al.

Marine Biology, Journal Year: 2019, Volume and Issue: 166(12)

Published: Nov. 11, 2019

Language: Английский

Citations

32
Modeling Pathogen Dispersal in Marine Fish and Shellfish DOI

Danielle L. Cantrell,

Maya L. Groner, Tal Ben‐Horin

et al.

Trends in Parasitology, Journal Year: 2020, Volume and Issue: 36(3), P. 239 - 249

Published: Feb. 6, 2020

Language: Английский

Citations

29
Spatial graphs highlight how multi‐generational dispersal shapes landscape genetic patterns DOI Creative Commons
Emilie Boulanger, Alicia Dalongeville, Marco Andrello

et al.

Ecography, Journal Year: 2020, Volume and Issue: 43(8), P. 1167 - 1179

Published: May 19, 2020

Current approaches that compare spatial genetic structure of a given species and the dispersal its mobile phase can detect mismatch between both patterns mainly due to processes acting at different temporal scales. Genetic result from gene flow other evolutionary demographic over many generations, while predicted often represents solely one generation on single time‐step. In this study, we present graph approach landscape genetics extends connectivity networks with stepping‐stone model represent suitable habitat patches multiple generations. We illustrate case striped red mullet Mullus surmuletus in Mediterranean Sea. The M. was not correlate estimated probability generation, but estimate larval dispersal, revealing scale across Our results highlight importance considering generations time scales when relating connectivity. distances further untangles intra‐population Siculo‐Tunisian Strait as an important corridor rather than barrier for Western‐ Eastern basins, identifying islands stepping‐stones continental populations. be easily extended systems environments.

Language: Английский

Citations

28