Observations on Feeding, Maturity, and Fecundity of Callinectes Similis Williams, 1966, on the Central Continental Shelf Off Veracruz, Gulf of Mexico

Rocha–Ramírez, Arturo; Cházaro–Olvera, Sergio; Román-Contreras, Ramiro

doi:10.1163/156854000504417

Cited by 10 publications

(3 citation statements)

References 9 publications

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“…A study by Chazaro-Olvera et al (2000) on the gut content and feeding of Callinectes similis on the central continental shelf off Veracruz in the Gulf of Mexico revealed several groups of food items in the diet including: plant fragments, remains of fish, polychaetes, crustaceans (Farfantepenaeus aztecus and Portunus gibbesii), micromolluscs (Mulinia lateralis) and detritus. Warner (1977), Lawal-Are (1998) and Ezekiel and Bernard (2014) also observed that the stomach contents of C. amnicola include mollusc shell parts, fish scales and bones and shrimp appendages, but concluded that mollusc shell parts constituted the most important dietary material.…”

Section: Discussionmentioning

confidence: 99%

DIETARY SPECTRUM, DISPERSITY AND OVERLAPS OF BLUE CRAB (Callinectes amnicola, DE ROCHEBURNE) FROM SOUTHEAST NIGERIA

Udoh

Jimmy

2015

CJF

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Blue crabs Callinectes amnicola are primarily described as carnivores (with more than 70% of animal food content in stomachs), but an assessment of the stomach contents of 239 and 245 crabs from the Qua Iboe River (QIRE) and Imo River estuaries (IRE), respectively, from January -December 2008, indicate the species exhibited a generalist and unspecialized carnivore feeding habit with animal food content <70% (61.15% and 56.03% in QIRE and IRE, respectively) during the study period. Eighteen dietaries in seven main food categories were identified and classified into four trophic levels: nekton (fish bones and scales), detritus (sediments), plants (algae and sea grasses) and zoobenthos (molluscs and insects). Fish and sediments were the primary food resources for QIRE crabs. The dendrogram plot, using cluster analysis, indicated four groups. The crabs from IRE exhibited higher diet generalization, wider diet breadth (feeding on sediments, fish, plants and molluscs), higher feeding intensity and condition factor than those of QIRE. Crabs from both locations exhibited similar dietary quality (index of biotal dispersity, IBD>60%) but dissimilar dietary quantity since diet overlap (< 60%) and diet breadth (B < 1) were low. Hence, crab combines its ability to switch from one food category to another with a tendency for carnivoredetritivore in IRE to omnivore-carnivore in QIRE, relative to abundance of food/prey items in its environment.

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Section: Discussionmentioning

confidence: 99%

DIETARY SPECTRUM, DISPERSITY AND OVERLAPS OF BLUE CRAB (Callinectes amnicola, DE ROCHEBURNE) FROM SOUTHEAST NIGERIA

Udoh

Jimmy

2015

CJF

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“…The environment of the continental shelf is influenced by fresh water from nearby rivers (i.e., the Papaloapan, Coatzacoalcos, and Panuco) that drain into several coastal lagoons and estuaries [61]. One of the largest is the Alvarado lagoon, which includes an adjacent platform composed primarily of clay and sand [51,62]. These particular hydrobiological conditions explain the elevated levels of organic material and nutrients reported for the zone [63].…”

Section: Study Areamentioning

confidence: 99%

“…In last years, fisheries production has declined [50] besides, some biological parameters as the average size of individual fish [54]. Also, data presented by Abarca-Arenas et al [55,56] on bycatch of shrimp fishery boats trawlers and observations by Cházaro-Olvera et al [51] suggest a marked increase in the abundance of by-catch and portunid crabs in the shrimp by-catch in the Gulf of Mexico.…”

Section: Introductionmentioning

confidence: 99%

Food-Web Structure and Functioning of Coastal Marine Ecosystems: Alvarado Lagoon and Adjacent Continental Shelf, Northern Gulf of Mexico

Cruz-Escalona¹,

Morales-Zárate²,

López³

et al. 2018

TOFISHSJ

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Introduction:The aim of the present study was to develop a trophic model characterizing simultaneously the structure and function of the two coastal marine ecosystems: Alvarado Lagoon, Mexico and adjacent continental shelf, important area for penaeid shrimps and demersal fish species.Method:The model was based on the assumption of biomass balance and describes the trophic relationships, flows of energy, and transfer efficiency of the food web, and includes 66 functional groups.Results:Results shows that 33% of the aggregate biological community biomass comes mainly second and third trophic levels. Size of aggregate flows as well as the transfer effectiveness among groups, results like those saw in other similar works. Connectance index (CI) was 0.12, meaning that there is only 12% only of the total theoretical connections exist. Results also shows that primary producers and detritus (lagoon and shelf) contribute with 60.1% of the total ascendency. Our work can be the basis for future research, which allow us to contrast alternate hypotheses about the functioning of the system.

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Rearing of juvenile dark crabs, Callinectes rathbunae contreras, 1930, under laboratory conditions

Cházaro–Olvera¹,

Morán-Silva²,

Vázquez-López³

2007

Crustac

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In the present study, we reared juvenile dark crabs, Callinectes rathbunae under laboratory conditions. We determined growth rate, increase in carapace width, moult consumption, regeneration of appendages, and survival. The crabs were collected in March 2004 from the Alvarado Lagoon System in the state of Veracruz, Mexico. Crabs were transported to the laboratory and acclimated to 5 and 15 psu and a temperature of 25 ± 1 • C. Growth rate was determined by the difference in size at the time interval between the pre-moult and moult stages. Survival was assessed by counting the juvenile crabs during rearing, moult consumption was determined after 24 hours, and regeneration of appendages at the next moult. The size of juveniles ranged from 1.7 to 6.4 cm. Results revealed that carapace increase was greater at 15 psu, being 35.29% for the 1.7-2.8 cm size range. The mean growth rate at 5 psu was 0.33 ± 0.07 mm/day and 0.76 ± 0.12 mm/day at 15 psu. Moult consumption was 50%. A 100% regeneration of appendages was observed after moulting. Survival was best at 15 psu, with 78.31%. RESUMENEn el presente estudio se realizó el cultivo de cangrejos juveniles de Callinectes rathbunae en condiciones de laboratorio. Se determinó la tasa de crecimiento, el incremento en el ancho del caparazón, el consumo de la muda, la regeneración de apéndices y la sobrevivencia. La colecta se realizó en Marzo de 2004 en el Sistema lagunar de Alvarado, Veracruz, México. Los cangrejos fueron transportados al laboratorio y aclimatados a 5 y 15 ups y temperatura de 25 ± 1 • C. La tasa de crecimiento se determinó por la diferencia de talla y el intervalo de tiempo transcurrido entre la premuda y la postmuda, la sobrevivencia por el conteo de cangrejos juveniles durante el tiempo de cultivo, el consumo de la muda después de 24 h y la regeneración de los apéndices a la siguiente muda. El intervalo de talla de los juveniles fue de 1,7 a 6,4 cm. Los resultados mostraron que el 2 ) Crustaceana 80 (2): 161-170 Also available online: www.brill.nl/cr 162 SERGIO CHÁZARO-OLVERA ET AL.incremento en el ancho del caparazón fue mayor en una salinidad de 15 ups con el 35. 29% en el intervalo de talla de 1,7 a 2,8 cm. Las tasa de crecimiento promedio a 5 ups fue de 0,33 ± 0,07 mm/día y a 15 ups fue de 0,76 ± 0,12 mm/ día. El consumo de muda fue del 50%. Se observó un 100% de regeneración de apéndices después de la muda. El porcentaje de sobrevivencia fue mayor a 15 ups con el 78,31%.

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Observations on Feeding, Maturity, and Fecundity of Callinectes Similis Williams, 1966, on the Central Continental Shelf Off Veracruz, Gulf of Mexico

Cited by 10 publications

References 9 publications

DIETARY SPECTRUM, DISPERSITY AND OVERLAPS OF BLUE CRAB (Callinectes amnicola, DE ROCHEBURNE) FROM SOUTHEAST NIGERIA

DIETARY SPECTRUM, DISPERSITY AND OVERLAPS OF BLUE CRAB (Callinectes amnicola, DE ROCHEBURNE) FROM SOUTHEAST NIGERIA

Food-Web Structure and Functioning of Coastal Marine Ecosystems: Alvarado Lagoon and Adjacent Continental Shelf, Northern Gulf of Mexico

Rearing of juvenile dark crabs, Callinectes rathbunae contreras, 1930, under laboratory conditions

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