Dispersion of Emerita analoga (Stimpson, 1857) larvae in northern coast of Chile (25 31.5 S)

Mujica, Armando; Nava, María Luisa; Vargas, Alejandra

doi:10.3856/vol42-issue3-fulltext-3

Cited by 4 publications

(3 citation statements)

References 17 publications

(17 reference statements)

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“…Unfortunately, there are few records of the larval dynamics in E. brasiliensis. In a study with Emerita analoga (Stimpson, 1857), a closely related species on the coast of Chile, Mujica et al (2014) observed higher density of zoea I close to the adult populations in the coastal region. These authors indicated that only intermediate larval stages were found at more distant sampling spots.…”

Section: Larval Behavior Of Six Decapod Speciesmentioning

confidence: 94%

Swimming behavior of newly hatched larvae of six decapod species (Crustacea: Decapoda)

Almeida

Cardoso

Souza³

et al. 2021

Nauplius

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Crustacean decapod larvae have developed several adaptations to maximize their survival, including swimming behavior. Swimming improves larvae dispersal and contributes to their response to environmental stresses, including variations in abiotic factors, presence of predators, and search for food. Data on larval behavior can also assist in studies on conservation and in species management in aquaculture. Unfortunately, swimming behavior remains unstudied in many species. The present work aims to analyze the swimming behavior in newly hatched larvae of six common decapod crustaceans in coastal Southeast Brazil (Macrobrachium acanthurus, Macrobrachium olfersii, Emerita brasiliensis, Ucides cordatus, Minuca rapax, and Callinectes danae). The analysis included tests with larval responses to four isolated stimuli: gravity (geotaxis), vertical salinity gradients, low-pressure zones, and presence of the planktivorous fish, Atherinella brasiliensis (only for C. danae and M. rapax). The first two and the last two stimuli were used as indicators of dispersal and defensive behaviors, respectively. All larvae

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Section: Larval Behavior Of Six Decapod Speciesmentioning

confidence: 94%

Swimming behavior of newly hatched larvae of six decapod species (Crustacea: Decapoda)

Almeida

Cardoso

Souza³

et al. 2021

Nauplius

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“…Coquimbo Bay is part of a larger ecosystem, that researchers called "Coquimbo Bays System" (CBS) (Thiel et al 2007, Flores and Mujica 2009, Mujica et al 2014; Fig. 1) because a series of five bays occur over 100 km of shoreline: two in Tongoy (Barnes and Socos bays), Guanaqueros, La Herradura, and Coquimbo.…”

Section: Study Area and Brief Introduction To The Social-ecological System Of The Surf Clam Fishery In The Coquimbo Baymentioning

confidence: 99%

Toward understanding the long-term persistence of a local governance system among artisanal fishers in Chile

Aburto¹,

Stotz²,

Cundill³

et al. 2021

E&S

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An important characteristic for the persistence of social-ecological systems (SESs) over time is the adaptation of local institutions to the dynamic of the resources on which they depend, especially when communities face resources with high spatial and temporal variability. Previous studies on Territorial User Rights for Fisheries (TURF) in Chile (Áreas de Manejo y Explotación de Recursos Bentónicos, AMERB) showed that resources with high levels of variability, such as the highly valuable surf clam Mesodesma donacium, can have negative impacts on collective efforts among fishers to govern marine resources under AMERB, resulting in the collapse of local institutions in this boom-and-bust fishery. Here, we reflect on the only known case in Chile (Coquimbo Bay) in which local institutions, its governance mechanisms, and the surf clam M. donacium fishery have persisted over long periods of time, despite disturbances from the natural and social systems. Using participatory techniques, we draw on local fishers' in-depth knowledge of both the resource and their own historical coping mechanisms to understand the potential sources of institutional persistence among local fishers faced with a resource that has high levels of variability. We find that this unique success of a surf clam AMERB in Chile is attributed to the local conditions, such as the roots that fishers have to their village, the support by women and family, and also to the ecological settings of Coquimbo Bay and resource characteristics, that facilitate larval dispersal among the different bays, maintaining recruitment and production that sustains the AMERB. Thus, the persistence of the institution has been built over generations of coping with major disturbances to the SES, directly related to the persistence of M. donacium stocks over time, which has allowed the development of a well-structured institution with a strong fishers' organization, good leaders, a division of labor among members, shared responsibilities, and equitable income distribution.

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“…Acuña et al (1989) pointed out that the upwelling area in front of Fray Jorge National Park (31°S) influences the entire CBS, including islands near Punta Choros (29°25'S) allowing the confluence of waters from the south and west, which generates upwelling foci (Acuña et al 2007). Some authors (Flores & Mujica 2009, Mujica et al 2014 suggested that a larval retention place is in the northern part of the CBS, where the highest larval concentrations of other species were found. Probably a consequence of the zooplankton drift produced by the Humboldt Current interaction, flowing from south to north (Escribano et al 2002) and action of two turns caused by geostrophic circulation and the diurnal tides component, allowing waters coming from Tongoy Bay to reach the bays north of it (Acuña et al 1989).…”

mentioning

confidence: 99%

Blepharipoda spinosa (H. Milne Edwards & Lucas, 1841) and Lepidopa chilensis Lenz, 1902 (Crustacea: Hippoidea) larvae on a north-central zone of Chile

Mujica

González-Salas²,

Nava³

2021

Lat. Am. J. Aquat. Res.

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The larvae of Blepharipoda spinosa and Lepidopa chilensis were collected from Chile's north-central coast (Paposo 25.0ºS and Oscuro Port 31.5ºS) in each February of 2013-2017. Larvae were separated by their development stage. Their abundance, occurrence, and distribution concerning its proximity to the coast were analyzed. Larval abundance and frequency of occurrence were low in both species. Zoea I dominated the highest concentrations detected in coastal stations and near the study area's longest sandy beaches. Interannual variation of larvae was seen in the abundance and composition by development stages. The highest abundance of B. spinosa larvae was found in February 2016, while L. chilensis larvae had the highest abundance in February 2014. Their presence and development stages in the wide sampling area provide information on both species' distribution and reproductive activity.

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Dispersion of Emerita analoga (Stimpson, 1857) larvae in northern coast of Chile (25 31.5 S)

Cited by 4 publications

References 17 publications

Swimming behavior of newly hatched larvae of six decapod species (Crustacea: Decapoda)

Swimming behavior of newly hatched larvae of six decapod species (Crustacea: Decapoda)

Toward understanding the long-term persistence of a local governance system among artisanal fishers in Chile

Blepharipoda spinosa (H. Milne Edwards & Lucas, 1841) and Lepidopa chilensis Lenz, 1902 (Crustacea: Hippoidea) larvae on a north-central zone of Chile

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