Fish larvae dynamics in temperate estuaries: A review on processes, patterns and factors that determine recruitment

Arevalo, Elorri; Cabral, Henrique; Villeneuve, Bertrand; Possémé, Carl; Lepage, Mario

doi:10.1111/faf.12740

Cited by 35 publications

(14 citation statements)

References 378 publications

(428 reference statements)

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“…Connectivity, or the exchange of individuals among populations, includes both the processes of dispersal and recruitment, and is a central topic in ecology and conservation biology (Burgess et al., 2014; Cowen & Sponaugle, 2009; Wood et al., 2014). Most fish species have a pelagic larval phase, during which larvae can be dispersed out of or recruited into populations, driving the exchange of individuals (i.e., connectivity) among populations (D’Aloia et al., 2015; Arevalo et al., 2023). The connectivity patterns can, in turn, affect biogeography, genetic structure, dynamics, and persistence of spatially structured populations (Wood et al., 2014).…”

Section: Introductionmentioning

confidence: 99%

A Larval “Recruitment Kernel” to Predict Hatching Locations and Quantify Recruitment Patterns

Shi,

Boegman,

Shan

et al. 2024

Water Resources Research

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Larval recruitment, a critical component of population connectivity, has been under investigated compared to larval dispersal. We developed a backward‐in‐time Lagrangian particle tracking model to predict larval hatching locations and proposed a larval recruitment kernel, to quantify recruitment patterns. Combining field data and a hydrodynamic model, our backtracking model predicted Lake Whitefish (Coregonus clupeaformis) hatching locations in Lake Erie. We found a strong linear correlation (r = 0.95–0.98) between travel distance (i.e., distance along a trajectory) and pelagic larval duration (PLD), and a moderate correlation (r = 0.66–0.68) between linear distance (i.e., displacement) and PLD. This questions the wide use of PLD as a proxy for dispersal distance. We defined the recruitment kernel using the probability density function of the linear recruitment distance. Characteristics of the recruitment kernel, such as theoretical self‐recruitment, median‐recruitment distance, long‐distance recruitment, and openness convey significant information about population connectivity that are distinct from those derived using the well‐known dispersal kernel (e.g., theoretical local retention).

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Section: Introductionmentioning

confidence: 99%

A Larval “Recruitment Kernel” to Predict Hatching Locations and Quantify Recruitment Patterns

Shi,

Boegman,

Shan

et al. 2024

Water Resources Research

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“…In order to prevent being swept out to sea on ebb tides and swept up into the estuary on flood tides, larvae need to move to the shallow marginal water of an estuary to avoid displacement and ensure entrainment within ideal areas of the estuary ( Whitfield, 1989 ; Strydom and Wooldridge, 2005 ; Pattrick and Strydom, 2014 ). This larval fish recruitment or entrainment responses in estuaries can also be assisted by environmental cues such as temperature, salinity and turbidity ( Boehlert and Mundy, 1988 ; Arevalo et al. , 2023 ; Whitfield et al.…”

Section: Introductionmentioning

confidence: 99%

Occurrence of larval fishes sampled by drifting light traps in the lower reaches of a South African estuary

Kisten,

Kruger,

Strydom

2024

Journal of Plankton Research

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The tidal occurrence of larval fishes was investigated in the permanently open Kowie Estuary on the warm-temperate coast of South Africa. Larval fishes were sampled in the mouth region using two drifting light traps deployed on the ebb and flood tides every second night for two consecutive 14-day periods, coinciding with the dark moon phase. A total of 553 larval fishes were caught, representing nine families and 26 species, of which Blenniidae and Clupeidae dominated. The prevalence of different estuarine association fish guilds was also tide-specific. Marine and estuarine species, such as Omobranchus woodi, were more dominant during flood tides, while marine straggler species, such as Sardinops sagax, which are not dependent on estuaries, were dominant on the ebb tide. Marine estuarine-dependents were only present during flood tides, potentially indicating ingress and entrainment within the estuary. The results confirm that light trap catches yield a different composition of species compared to towed ichthyoplankton net studies. Additionally, drifting light traps allow for better targeting of species with a phototactic response and reduction of incidental catch. Consequently, a mixture of gear is encouraged for more comprehensive surveys of larval fish occurrence.

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“…Their relatively small area disproportionally contributes to the global carbon cycle, along with their roles as a source of nutrients and hatching grounds for marine ecosystems (Cloern et al, 2014;Arevalo et al, 2023). Estuaries are of great importance for anthropogenic use, which also exposes them to many stressors such as diking, dredging and fishing (Jennerjahn and Mitchell, 2013;Brown et al, 2022;Wilson, 2002). Estuaries present challenging dynamics to their smallest residents due to their strong salinity gradient and net transport to the ocean.…”

Section: Introductionmentioning

confidence: 99%

Phytoplankton retention mechanisms in estuaries: a case study of the Elbe estuary

Steidle,

Vennell

2024

Nonlin. Processes Geophys.

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Abstract. Due to their role as primary producers, phytoplankton are essential to the productivity of estuarine ecosystems. However, it is important to understand how these nearly passive organisms are able to persist within estuaries when river inflow results in a net outflow to the ocean. Estuaries also represent challenging habitats due to a strong salinity gradient. Little is known about how phytoplankton are able to be retained within estuaries. We present a new individual-based Lagrangian model of the Elbe estuary which examines possible retention mechanisms for phytoplankton. Specifically, we investigated how reproduction, sinking and rising, and diel vertical migration may allow populations to persist within the estuary. We find that vertical migration, especially rising, favors retention, while fast sinking does not. We further provide first estimates of outwashing losses. Our simulations illustrate that riverbanks and tidal flats are essential for the long-term survival of phytoplankton populations, as they provide refuges from strong downstream currents. These results contribute to the understanding needed to advance the ecosystem-based management of estuaries.

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Fish larvae dynamics in temperate estuaries: A review on processes, patterns and factors that determine recruitment

Cited by 35 publications

References 378 publications

A Larval “Recruitment Kernel” to Predict Hatching Locations and Quantify Recruitment Patterns

A Larval “Recruitment Kernel” to Predict Hatching Locations and Quantify Recruitment Patterns

Occurrence of larval fishes sampled by drifting light traps in the lower reaches of a South African estuary

Phytoplankton retention mechanisms in estuaries: a case study of the Elbe estuary

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