Ontogeny of larval swimming abilities in three species of coral reef fishes and a hypothesis for their impact on the spatial scale of dispersal

Majoris, John E.; Catalano, Katrina A.; Scolaro, Derek; Atema, Jelle; Buston, Peter M.

doi:10.1007/s00227-019-3605-2

Cited by 31 publications

(33 citation statements)

References 50 publications

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“…It is considered as a convenient and relatively accurate experimental method to estimate sustained swimming speed of fish, which is primarily driven by aerobic, slow, red muscle fibres 53 , 54 . In spite of the recent criticism raised on the use of U crit values in larval dispersal modelling 25 , critical swimming speed has been commonly used in the study of larval dispersal capabilities 55 , 56 . In the present paper, critical swimming speed was tested in metamorphosing larvae of 18–19 mm TL.…”

Section: Discussionmentioning

confidence: 99%

Long lasting effects of early temperature exposure on the swimming performance and skeleton development of metamorphosing Gilthead seabream (Sparus aurata L.) larvae

Kourkouta

Printzi

Geladakis

et al. 2021

Sci Rep

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Temperatures experienced during early ontogeny significantly influence fish phenotypes, with clear consequences for the wild and reared stocks. We examined the effect of temperature (17, 20, or 23 °C) during the short embryonic and yolk-sac larval period, on the swimming performance and skeleton of metamorphosing Gilthead seabream larvae. In the following ontogenetic period, all fish were subjected to common temperature (20 °C). The critical swimming speed of metamorphosing larvae was significantly decreased from 9.7 ± 0.6 TL/s (total length per second) at 17 °C developmental temperature (DT) to 8.7 ± 0.6 and 8.8 ± 0.7 TL/s at 20 and 23 °C DT respectively (p < 0.05). Swimming performance was significantly correlated with fish body shape (p < 0.05). Compared with the rest groups, fish of 17 °C DT presented a slender body shape, longer caudal peduncle, terminal mouth and ventrally transposed pectoral fins. Moreover, DT significantly affected the relative depth of heart ventricle (VD/TL,p < 0.05), which was comparatively increased at 17 °C DT. Finally, the incidence of caudal-fin abnormalities significantly decreased (p < 0.05) with the increase of DT. To our knowledge, this is the first evidence for the significant effect of DT during the short embryonic and yolk-sac larval period on the swimming performance of the later stages.

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Section: Discussionmentioning

confidence: 99%

Long lasting effects of early temperature exposure on the swimming performance and skeleton development of metamorphosing Gilthead seabream (Sparus aurata L.) larvae

Kourkouta

Printzi

Geladakis

et al. 2021

Sci Rep

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“…For instance, vertical larval migration may allow deep populations from nearby seamounts to repopulate shallow areas impacted by overfishing, which might increase the intraconnectivity within each seamount system (Fox et al, 2016). On the other hand, these swimming abilities might disperse larvae over long distances (Majoris et al, 2019), possibly increasing the inter-connectivity between the two systems. Longer-living larvae are expected to travel greater distances, thus enhancing the existing connectivity pathways (Fox et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

Physical Connectivity Between the NE Atlantic Seamounts

2020

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Within the Portuguese Exclusive Economic Zone, the Great Meteor and Madeira-Tore complexes are highly productive areas, which are likely to be classified as marine protected areas (MPAs) due to their ecological vulnerability. This was the main focus of the BIOMETORE project and, framed on it, the aim of the present study was to investigate the physical connectivity between both seamount complexes. Using the HYbrid Coordinate Ocean Model coupled with the Connectivity Modeling System (CMS) (a Lagrangian tool), a series of experiments was conducted in order to determine the influence of the main oceanographic phenomena governing the area in: (i) the origin of the particles that reach each complex, (ii) their capacity to capture and retain incoming particles, and (iii) the physical connectivity between them as well as the intra-connectivity within each seamount system. Due to the geographical location of both groups of seamounts, the Azores Current (AzC) and its associated eddies were identified as the main transport pathways, its influence being stronger at intermediate waters and decreasing with depth. Notwithstanding, the Great Meteor and the Madeira-Tore were mainly affected by the AzC southward and eastward branches, respectively, resulting in a non-significant connectivity between the two groups. Meanwhile, the inter-connectivity between seamounts slightly varied with depth at the Great Meteor complex while increasing at Madeira-Tore. In addition, the Plateau, Irving, and Cruiser (PIC) seamounts from the Great Meteor complex and Gorringe and Coral from the Madeira-Tore complex proved to incorporate the regional connectivity routes. Although containing the three smallest seamounts, Madeira-Tore showed the higher capturing capacity per square kilometer, highlighting the influence of the "sticky water effect." In the Great Meteor complex, the "seamount effect" seems to be the main phenomenon responsible for the greater retention and self-recruitment abilities of these seamounts. The presented results provide valuable information for the design of a MPA to preserve these vulnerable habitats.

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“… Leis et al , 1996 ; Fisher and Bellwood, 2003 ). Swimming chambers, where flow velocities can be manipulated, have been used to swim fishes to exhaustion, either at set speeds (endurance swimming; Majoris et al , 2019 ) or by a step-wise increase in flow velocity (critical swimming speed, U crit ) ( Brett, 1964 ; see review by Ellerby and Herskin, 2013 ). Swimming methodologies can also differ based on the equipment or experimental protocol used, and some studies have systematically investigated the effects of step heights (velocity increments) and step lengths (time intervals) on critical swimming speeds in temperate fishes.…”

Section: Introductionmentioning

confidence: 99%

Automated flow control of a multi-lane swimming chamber for small fishes indicates species-specific sensitivity to experimental protocols

Illing

Severati

Hochen

et al. 2021

Conservation Physiology

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In fishes, swimming performance is considered an important metric to measure fitness, dispersal and migratory abilities. The swimming performance of individual larval fishes is often integrated into models to make inferences on how environmental parameters affect population-level dynamics (e.g. connectivity). However, little information exists regarding how experimental protocols affect the swimming performance of marine fish larvae. In addition, the technical setups used to measure larval fish swimming performance often lack automation and accurate control of water quality parameters and flow velocity. In this study, we automated the control of multi-lane swimming chambers for small fishes by developing an open-source algorithm. This automation allowed us to execute repeatable flow scenarios and reduce operator interference and inaccuracies in flow velocity typically associated with manual control. Furthermore, we made structural modifications to a prior design to reduce the areas of lower flow velocity. We then validated the flow dynamics of the new chambers using computational fluid dynamics and particle-tracking software. The algorithm provided an accurate alignment between the set and measured flow velocities and we used it to test whether faster critical swimming speed (Ucrit) protocols (i.e. shorter time intervals and higher velocity increments) would increase Ucrit of early life stages of two tropical fish species [4–10-mm standard length (SL)]. The Ucrit of barramundi (Lates calcarifer) and cinnamon anemonefish (Amphiprion melanopus) increased linearly with fish length, but in cinnamon anemonefish, Ucrit started to decrease upon metamorphosis. Swimming protocols using longer time intervals (more than 2.5 times increase) negatively affected Ucrit in cinnamon anemonefish but not in barramundi. These species-specific differences in swimming performance highlight the importance of testing suitable Ucrit protocols prior to experimentation. The automated control of flow velocity will create more accurate and repeatable data on swimming performance of larval fishes. Integrating refined measurements into individual-based models will support future research on the effects of environmental change.

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Ontogeny of larval swimming abilities in three species of coral reef fishes and a hypothesis for their impact on the spatial scale of dispersal

Cited by 31 publications

References 50 publications

Long lasting effects of early temperature exposure on the swimming performance and skeleton development of metamorphosing Gilthead seabream (Sparus aurata L.) larvae

Long lasting effects of early temperature exposure on the swimming performance and skeleton development of metamorphosing Gilthead seabream (Sparus aurata L.) larvae

Physical Connectivity Between the NE Atlantic Seamounts

Automated flow control of a multi-lane swimming chamber for small fishes indicates species-specific sensitivity to experimental protocols

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