Ion-motive ATPases and active, transbranchial NaCl uptake in the red freshwater crab, Dilocarcinus pagei (Decapoda, Trichodactylidae)

The aim of the present study was to determine the size at sexual maturity in the freshwater crab Dilocarcinus pagei Stimpson, 1861, from a population located in Mendonça, state of São Paulo, Brazil. The crabs were sampled monthly (July 2005 to June 2007), at Barra Mansa reservoir. The specimens were captured manually or in sieves passed through the aquatic vegetation. The crabs were captured and separated by sex based on morphology of the pleon and on the number of pleopods. The following dimensions were measured: carapace width (CW); carapace length (CL); propodus length (PL); and abdomen width (AW). The morphological analysis of the gonads was used to identify and categorize individuals according to their stage of development. The morphological maturity was estimated based on the analysis of relative growth based on the allometric equation y = ax b. The gonadal maturity was based on the morphology of the gonads by the method CW50 which indicates the size at which 50% of the individuals in the population showed gonads morphologically mature to reproduction. The biometric relationships that best demonstrated the different patterns of growth for the juvenile and adult stages were CW vs. PL for males and CW vs. AW for females (p<0.001). Based on these relationships, the estimated value to morphological sexual maturity was 21.5 mm (CW) in males and 19.7 mm (CW) in females. The determination of the size at sexual maturity and the adjustment of the data based on the logistic curve (CW50) resulted in a size of 38.2 mm for males and 39.4 mm for females (CW). Based on the data obtained for sexual maturity for D. pagei, we can estimate a minimum size for capture of 40 mm (CW). This minimum size allows at least half of the population to reproduce and retains the juveniles and a portion of the adults in the population.

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Daily Rhythm of Feeding Activity of the Freshwater Crab Dilocarcinus Pagei Pagei in the Rio Pilcomayo National Park, Formosa, Argentina

Modern Approaches to the Study of Crustacea ◽

10.1007/978-1-4615-0761-1_27 ◽

2002 ◽

pp. 171-178 ◽

Cited By ~ 7

Author(s):

Verónica Williner ◽

Pablo A. Collins

Keyword(s):

National Park ◽

Feeding Activity ◽

Daily Rhythm ◽

Freshwater Crab ◽

Dilocarcinus Pagei

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Juvenile development of Dilocarcinus pagei Stimpson, 1861 (Brachyura, Trichodactylidae) reared in the laboratory, with emphasis on setae morphology

Crustaceana ◽

10.1163/15685403-00003247 ◽

2013 ◽

Vol 86 (13-14) ◽

pp. 1644-1663 ◽

Cited By ~ 3

Author(s):

Rony R. R. Vieira ◽

Paulo J. Rieger ◽

Viviane Cichowski ◽

Marcelo A. A. Pinheiro

Keyword(s):

Sexual Dimorphism ◽

Water Hyacinth ◽

Morphological Characters ◽

Juvenile Stage ◽

Freshwater Crab ◽

The Third ◽

Laboratory Conditions ◽

Juvenile Stages ◽

Juvenile Development ◽

Dilocarcinus Pagei

The juvenile development of the freshwater crab Dilocarcinus pagei Stimpson, 1861 was studied under laboratory conditions, focusing on setae morphology. The ovigerous females were collected manually associated with water hyacinth at the Municipal Dam of São José do Rio Preto (São Paulo, Brazil). The specimens were raised in the laboratory under constant aeration, photoperiod (12 : 12 h) and temperature (27 ± 1°C). Twelve juvenile stages were obtained with descriptions of the main morphological characters that allow their identification are presented. Fourteen types of setae were discovered: dentate, denticulate, serrulate, papposerrate, cuspidate, plumose, plumodenticulate, plumoserrulate, simple, pappose, brush, curved, nail and setules. The greatest diversity of setae was found on the mouth appendages, especially the maxillule. The gill ontogeny and sexual dimorphism becomes apparent from the second juvenile stage onwards. At the third juvenile stage, the carapace begins to exhibit a wider shape, becoming similar to that of the adults.

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Calcium transport and homeostasis in gill cells of a freshwater crab Dilocarcinus pagei

Journal of Comparative Physiology B ◽

10.1007/s00360-009-0427-4 ◽

2009 ◽

Vol 180 (3) ◽

pp. 313-321 ◽

Cited By ~ 9

Author(s):

Marina Granado e Sá ◽

B. B. Baptista ◽

L. S. Farah ◽

V. P. Leite ◽

F. P. Zanotto

Keyword(s):

Calcium Transport ◽

Freshwater Crab ◽

Gill Cells ◽

Dilocarcinus Pagei

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Sexual maturity, handedness and sexual dimorphism of the freshwater crab Dilocarcinus pagei in Southeastern Brazil

Boletim do Instituto de Pesca ◽

10.20950/1678-2305.2016v42n2p269 ◽

2016 ◽

Vol 42 (3) ◽

pp. 269-279 ◽

Cited By ~ 5

Author(s):

Thiago Maia DAVANSO ◽

◽

Fabiano Gazzi TADDEI ◽

Gustavo Luis HIROSE ◽

Rogerio Caetano COSTA

Keyword(s):

Sexual Dimorphism ◽

Sexual Maturity ◽

Southeastern Brazil ◽

Freshwater Crab ◽

Dilocarcinus Pagei

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Structural and biochemical correlates of Na+,K+-ATPase driven ion uptake across the posterior gill epithelium of the true freshwater crab, Dilocarcinus pagei (Brachyura, Trichodactylidae)

Journal of Experimental Zoology Part A Ecological Genetics and Physiology ◽

10.1002/jez.622 ◽

2010 ◽

Vol 313A (8) ◽

pp. 508-523 ◽

Cited By ~ 26

Author(s):

Rosa Prazeres Melo Furriel ◽

Kelly Cristina Silva Firmino ◽

Douglas Chodi Masui ◽

Rogério Oliveira Faleiros ◽

Antonio Hernandes Torres ◽

...

Keyword(s):

Ion Uptake ◽

Freshwater Crab ◽

Gill Epithelium ◽

Dilocarcinus Pagei

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Short- and long-term, salinity-induced modulation of V-ATPase activity in the posterior gills of the true freshwater crab, Dilocarcinus pagei (Brachyura, Trichodactylidae)

Comparative Biochemistry and Physiology Part B Biochemistry and Molecular Biology ◽

10.1016/j.cbpb.2011.05.002 ◽

2011 ◽

Vol 160 (1) ◽

pp. 24-31 ◽

Cited By ~ 18

Author(s):

Kelly Cristina Silva Firmino ◽

Rogério Oliveira Faleiros ◽

Douglas Chodi Masui ◽

John Campbell McNamara ◽

Rosa Prazeres Melo Furriel

Keyword(s):

Atpase Activity ◽

Freshwater Crab ◽

Short And Long Term ◽

Dilocarcinus Pagei

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Amazon freshwater crab Dilocarcinus pagei (Decapoda: Trichodactylidae): a view about burrow construction behavior

Latin American Journal of Aquatic Research ◽

10.3856/vol48-issue1-fulltext-2325 ◽

2020 ◽

Vol 48 (1) ◽

pp. 85-93

Author(s):

Leandro S. Fernandes ◽

Bruno S. Sant’Anna ◽

Gustavo Y. Hattori

Keyword(s):

Freshwater Crab ◽

Freshwater Crabs ◽

Mean Diameter ◽

Dilocarcinus Pagei ◽

Environmental Interference

Crabs use burrows to prevent predation, environmental interference and shelter. The present study investigated the excavation behavior of the trichodactylid crab Dilocarcinus pagei, considering the biometric aspects of the burrows, the excavation time, the amount of bioturbation and the excavation behavior of the two sexes. The burrows of males had a mean diameter larger than the females, although the depth was similar for both sexes. Females had higher bioturbation than males, and showed enlargement in a camera format at the bottom, even closing the entrance of the burrows with a "plug" after their construction. Both the camera and the presence of the "plug" in the burrows of the females may be associated with reproduction. The presence of pellets observed at the entrance of burrows is associated with the cleaning of the pereiopods by crabs after the excavation. The sequence of behaviors for the construction of the burrows is described in detail, contributing to the knowledge about the biology and ecology of freshwater crabs of the Amazon.

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