Population Biology and Reproductive Dynamics of Decapod Crustaceans

Decapod crustaceans—including crabs, lobsters, shrimps and prawns—exhibit a broad array of life‐history strategies that underpin their ecological success and commercial value. Population biology integrates demographic parameters such as growth trajectories, mortality rates, recruitment dynamics, spatial connectivity and sex ratios, often drawing upon length‐frequency analyses, mark–recapture studies and modelling frameworks. Reproductive dynamics encompass the onset of sexual maturity, mating systems, fecundity, spawning seasonality and larval dispersal, all modulated by environmental factors such as temperature, salinity and habitat structure. These interlinked processes govern population resilience, inform stock assessment models and guide sustainable fisheries management and aquaculture practices on a global scale.

Research from Nature Portfolio

Recent studies have quantified sex-specific growth and recruitment patterns in a high-value sand crab species. Males attained larger asymptotic carapace widths and higher growth coefficients than females, while females exhibited slowed growth during peak spawning periods. Seasonal recruitment pulses, aligned with larval settlement windows, were identified, enhancing predictive models of population replenishment and informing size-selective harvest regulations.

Population Biology and Reproductive Dynamics of Decapod Crustaceans publication trend

The graph below shows the total number of articles in population biology and reproductive dynamics of decapod crustaceans across all publications each year (not limited to Nature Index journals).

Technical terms

Asymptotic length (CW∞): the theoretical maximum carapace width predicted by a growth model.

Allometric growth: non-uniform growth rates among body parts, leading to changing proportions with size.

Recruitment: the addition of juveniles to the fishable or adult segment of a population.

Mortality rate (Z, M, F): per-unit-time rates of total (Z), natural (M) and fishing-induced (F) mortality.

Sexual dimorphism: morphological differences between males and females of a species.

FiSAT II: software for estimating growth and mortality parameters from length-frequency data.

References

1. Sex-specific differences in the growth and population characteristics of Sand crab Ovalipes punctatus (De Haan, 1833) in coastal waters of Korea. Scientific Reports (2024).
2. Population parameters of the orange mud crab Scylla olivacea (Herbst, 1796) from the Sundarban mangrove forest in Bangladesh. Heliyon (2021).
3. Sexual dimorphism in mud crabs: a tale of three sympatric Scylla species. PeerJ (2021).