Presence of Cyrtograpsus angulatus Dana, 1851 (Decapoda, Brachyura) on the Chilean northern Patagonian coast

Ríos, Patricio De los; Múñoz, Guillermo; Kies, Fátima

doi:10.1163/15685403-00003767

Cited by 8 publications

(3 citation statements)

References 16 publications

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“…This may be the result of the type of fishing gear, because among its assumptions are: (i) the bait attracts all species equally and, (ii) the species are distributed randomly in the areas where the traps are located [29]. The pattern described is similar to that observed for intertidal crabs in northern Patagonian fjords [11]. The use of these kinds of null models in marine environments has not been recorded in Chilean marine ecosystems, and could be an important statistical tool for ecological studies.…”

Section: Discussionmentioning

confidence: 86%

“…The studies on decapod fauna are based mainly on the species records of scientific expeditions [4][5][6][7][8][9] that provide a basis for integrated biogeographical studies [1,8,9]. Nevertheless, ecological studies are scarce due to the difficulty of accessing southern Chilean Patagonia [2,[10][11][12]. Previous studies were mainly conducted on intertidal and subtidal populations and communities in central and northern Patagonian inner seas [2,8,10] by studying the stomach contents of coastal fish for which decapods represent an important food source [10,13] as well as communities in deep seas [14].…”

Section: Introductionmentioning

confidence: 99%

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Decapods Associated with the Southern King Crab (Lithodes santolla) Fishery in Central Patagonia (44° S, Chile)

Figueroa-Muñoz

Molinet

Díaz

et al. 2021

JMSE

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The southern king crab, Lithodes santolla, is an important fishery resource in the inner seas of Chilean Patagonia. The fishing gear used to catch southern king crab (bait trap) and its operation at different depths over several months provide the opportunity to gather information about relative abundance. The aim of the present study was to analyze the information collected from the catches of southern king crab and its associated fauna in the Magdalena Fjord to study the biodiversity and ecology of scavenging decapod crustaceans. Specifically, the study aimed to determine the bathymetric patterns of abundance by species, to model the abundance by season (winter and spring) and to determine the structuring pattern of scavenging decapods assemblage. Samples were collected between June and November 2019 by deploying traps in four bathymetric strata: 1 = 0–50 m; 2 = 51–100 m; 3 =101–150 m; 4 = 151–200 m. We registered a total of 673 decapod specimens associated with the southern king crab fishery, representing five species: Lithodes santolla (n = 96), Libidoclaea smithii (n = 10), Metacarcinus edwardsii (n = 58), Munida gregaria (n = 507) and Peltarion spinulosum (n = 2). The abundance of decapod species varied by month and bathymetric strata. We found bathymetric patterns for L. santolla abundance, M. gregaria, M. edwardsii, and total species abundance. The most informative model to explain scavenging decapod abundance by generalized linear model (GLM) included species and season. The null model of species co-occurrence analysis revealed that all species associations during the sampled months were random. Our study is the first that provides evidence about patterns of bathymetrical and temporal variation of scavenging decapod abundance and expands the body of knowledge regarding the biodiversity of scavenger decapods in the Magdalena Sound.

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Section: Discussionmentioning

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Decapods Associated with the Southern King Crab (Lithodes santolla) Fishery in Central Patagonia (44° S, Chile)

Figueroa-Muñoz

Molinet

Díaz

et al. 2021

JMSE

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show abstract

“…Nevertheless, ecological studies are scarce due to the difficulty of accessing southern Chilean Patagonia [2,[10][11][12]. Previous studies were mainly conducted on intertidal and subtidal populations and communities in central and northern Patagonian inner seas [2,8,10] by studying the stomach contents of coastal fish for which decapods represent an important food source [10,13] as well as communities in deep seas [14].…”

Section: Introductionmentioning

confidence: 99%

Decapods Associated with the Southern King Crab (<em>Lithodes santolla</em>) Fishery in Central Patagonia (44º S, Chile).

Figueroa-Muñoz¹,

Molinet²,

Díaz³

et al. 2021

Preprint

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The Southern king crab, Lithodes santolla, is an important fishery resource in the inner seas of Chilean Patagonia. The fishing gear used to catch Southern king crab (bait trap) and its operation at different depths over several months provide the opportunity to gather information about relative abundance. The aim of the present study was to analyze the information collected from the catches of Southern king crab and its associated fauna in the Magdalena Fjord to study the biodiversity and ecology of scavenging decapod crustaceans. Specifically, the study aimed to determine the bathymetric patterns of abundance by species, to model the abundance by season (winter and spring) and to determine the structuring pattern of scavenging decapods assemblage. Samples were collected between June and November 2019 by deploying traps in four bathymetric strata: 1 = 0–50 m; 2 = 51–100 m; 3 =101–150 m; 4 = 151–200 m. We registered a total of 673 decapod specimens associated with the Southern king crab fishery, representing five species: Lithodes santolla (n = 96), Libidoclaea smithii (n = 10), Metacarcinus edwardsii (n = 58), Munida gregaria (n = 507) and Peltarion spinulosum (n = 2). The abundance of decapod species varied by month and bathymetric strata. We found bathymetric patterns for L. santolla abundance, M. gregaria, M. edwardsii, and total species abundance. The most informative model to explain scavenging decapod abundance by GLM included species and season. The null model of species co-occurrence analysis revealed that all species associations during the sampled months were random. Our study is the first that provides evidence about patterns of bathymetrical and temporal variation of scavenging decapod abundance and expands the body of knowledge regarding the biodiversity of scavenger decapods in the Magdalena Sound, which currently is affected by multiple stressors such as climate change and anthropic activities (aquaculture and fisheries).

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Null models to explain highly diverse community of intertidal decapods on a temperate rocky coast in Antofagasta, northern Chile (23º27ʹS)

De los Ríos-Escalante,

Ibáñez-Arancibia,

Esse

et al. 2023

Journal of Crustacean Biology

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The decapod fauna on intertidal shores in northern Chile is characterized by its relatively high diversity and abundance due to the presence of continuous upwelling by the Humboldt Current, which results in a high productivity. The decapod fauna on intertidal rocky shores is characterized by coexisting species that inhabits in natural shelters such as cracks and eroded rocks, as well as among macroalgae. We aimed to monitor the brachyuran and anomuran (porcellanid) crabs in three intertidal sites during two periods of time in September-December 2019 in the Antofagasta region, one site without human intervention and two sites in the city of Antofagasta, for which we applied null models in ecology. We assumed that the communities are random, a viewpoint that is more robust because it reduces the risk of error type I. The results of the application of null models on the co-occurrence species revealed that species associations are mainly structured for all sites, whereas the niche-sharing null model revealed that the reported species did not share ecological niches and in consequence there is not interspecific competition. The results would probably indicate that the species of intertidal decapods have a micro-specific ecological-niche differentiation, which would explain the existence of structured pattern in species associations. The results were compared with information for other sites along the continental Chilean coast.

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Presence of Cyrtograpsus angulatus Dana, 1851 (Decapoda, Brachyura) on the Chilean northern Patagonian coast

Cited by 8 publications

References 16 publications

Decapods Associated with the Southern King Crab (Lithodes santolla) Fishery in Central Patagonia (44° S, Chile)

Decapods Associated with the Southern King Crab (Lithodes santolla) Fishery in Central Patagonia (44° S, Chile)

Decapods Associated with the Southern King Crab (<em>Lithodes santolla</em>) Fishery in Central Patagonia (44º S, Chile).

Null models to explain highly diverse community of intertidal decapods on a temperate rocky coast in Antofagasta, northern Chile (23º27ʹS)

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