Larval Biology and Ecological Dynamics in Marine Invertebrates

Marine invertebrate larvae represent a critical phase linking reproductive output to adult population structure and community resilience. Larval forms span a spectrum from planktotrophic stages that feed extensively in the water column to lecithotrophic forms that rely on yolk reserves. During planktonic development, larvae navigate spatially and temporally variable currents, temperature gradients and food patches, leading to complex dispersal trajectories and settlement patterns. Physiological traits such as metabolic rate, osmoregulatory capacity and lipid composition govern survival under shifting salinity and thermal regimes. The transition to benthic juvenile stages involves metamorphosis, a transformation orchestrated by endogenous hormones and exogenous cues such as substrate chemistry and conspecific presence. Phenotypic plasticity in developmental timing and instar number allows larvae to optimise growth and resource allocation under unpredictable environmental stressors. Collectively, these processes regulate gene flow, recruitment success and species distributions, with clear implications for ecosystem function and fisheries management. Emerging methods in high-dimensional phenomics, lipidomics and genome-wide association are elucidating the mechanistic basis of larval performance and revealing how global change drivers may alter the ecological dynamics of coastal and open-ocean communities.

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Larval Biology and Ecological Dynamics in Marine Invertebrates publication trend

The graph below shows the total number of articles in larval biology and ecological dynamics in marine invertebrates across all publications each year (not limited to Nature Index journals).

Technical terms

Lecithotrophy: Developmental mode in which larvae rely on yolk reserves rather than external feeding.

Planktotrophy: Larval strategy characterised by active feeding on planktonic resources to fuel growth.

Nauplius: Early, usually feeding, larval stage in crustaceans bearing three pairs of appendages and a simple eye.

Cyprid: Non-feeding, settlement‐competent zoeal stage in barnacles that attaches to substrate and metamorphoses.

Phenotypic plasticity: Ability of larvae to modify developmental rate or form in response to environmental conditions.

References

1. Fatty acid composition as a function of latitude in barnacle cyprid larvae. Limnology and Oceanography (2024).
2. Phenomics enables measurement of complex responses of developing animals to global environmental drivers. The Science of The Total Environment (2022).