Reproductive biology of Hepatus pudibundus (Crustacea: Brachyura), the most abundant crab on the southeastern Brazilian coast

Lima, Paloma Aparecida de; Bertini, Giovana; Fransozo, Vívian; Gregati, Rafael Augusto; Fernandes-Góes, Lissandra Corrêa; Castilho, Antônio Leão

doi:10.2478/s11756-013-0301-4

Cited by 10 publications

(1 citation statement)

References 28 publications

(33 reference statements)

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“…Quite possibly, this higher metabolic rate of C. danae is a result of its osmoregulatory behavior, but also relates to its higher locomotor mobility, in general, when compared to the flecked box crab, also considering the issue on magnesium regulation discussed above. The conformer flecked box crab remains buried in the sand (Lima et al, 2014; Medina Mantelatto & Petracco, 1997) in its habitat, and shows less activity inside the vials during the experiments. Crustaceans that routinely exhibit higher physical activity often have higher rates of oxygen uptake compared to other crabs characterized as poorly active, as would be expected, even under control conditions, without salinity challenges (Watt et al, 1999).…”

Section: Discussionmentioning

confidence: 99%

Acute metabolic responses of two marine brachyuran crabs to dilute seawater: The aerobic cost of hyper regulation

Rios

Freire

2023

J Exp Zool Pt A

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Hepatus pudibundus ("flecked box crab") is a stenohaline osmoconfomer, and restricted to marine habitats. Callinectes danae ("swimming crab Dana") lives in coastal/estuarine waters and is a weak hyper regulator. There is no consensus on which strategy is more expensive metabolically face salinity challenges: conformation with higher dependence on cell volume regulation, or hyper regulation, alleviating the need for intense cell volume regulation. Crabs were probed for their acute response to dilute seawater through exposures to salinities 35‰, 30‰, 25‰, and 20‰ for 2, 4, and 6 h. Hemolymph osmolality, lactate, and ions (chloride, sodium, magnesium, potassium) were assayed, as well as muscle water content.Water dissolved oxygen, ammonia, and pH levels were also measured. H. pudibundus conformed for osmolality and displayed increase in muscle hydration along the decrease in salinity down to 25‰, while C. danae efficiently maintained hemolymph osmo ionic stability, consumed more oxygen, acidified more the water, and released more ammonia. In 25‰, both species spent energy: H. pudibundus putatively controlling cell volume, and C. danae regulating hemolymph concentrations. In 20‰, H. pudibundus closed itself, avoiding the contact of the interface epithelia with the external environment and producing much lactate, whereas C. danae spent more energy (aerobic) in extracellular osmo ionic stability. Under these conditions, anisosmotic extracellular regulation (together with additional cell volume regulation) is more oxygen consuming than osmoconformation with a putatively more intense challenge to cell volume. The exposure to hyposalinity limits the occupation of estuarine environments by H. pudibundus in short and middle term.

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Section: Discussionmentioning

confidence: 99%

Acute metabolic responses of two marine brachyuran crabs to dilute seawater: The aerobic cost of hyper regulation

Rios

Freire

2023

J Exp Zool Pt A

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Population dynamics of the crabHepatus pudibundus(Herbst, 1785) (Decapoda, Aethridae) on the southern coast of São Paulo state, Brazil

et al. 2018

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The present study investigated the population dynamics of Hepatus pudibundus in the Cananéia region, in southern São Paulo state, Brazil, focusing on population structure, growth parameters, longevity, sex ratio, reproduction and recruitment juvenile period. Sampling was performed monthly at seven stations from July 2012 to June 2014, using a shrimp fishing boat. A total of 1650 specimens were collected: 551 males and 1099 females. The males were larger than females. Reproductive females were captured throughout the study period and juveniles were captured in most months. Both of these demographic categories were positively correlated with temperature. Growth parameters showed differences between sexes: CW∞ = 78.91 mm, k = 0.0066 day−1, t0 = 0.0965 for males and CW∞ = 69.71 mm, k = 0.0053 day−1, t0 = −0.2404 for females. Longevity was estimated at 1.91 and 2.40 years for males and females, respectively. The findings provide a greater understanding of the life cycle in this species. Additionally, since trawl nets are not selective, this study also provides information for better trawl fishery management, addressing not only the target shrimp but also the by-catch species.

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Relative growth and morphological sexual maturity of the crab Hepatus pudibundus (Herbst, 1785) (Decapoda: Aethridae) in southeast Brazil

Jaconis

Nogueira

Gois

et al. 2022

Invertebrate Reproduction & Development

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Reproductive biology of Hepatus pudibundus (Crustacea: Brachyura), the most abundant crab on the southeastern Brazilian coast

Cited by 10 publications

References 28 publications

Acute metabolic responses of two marine brachyuran crabs to dilute seawater: The aerobic cost of hyper regulation

Acute metabolic responses of two marine brachyuran crabs to dilute seawater: The aerobic cost of hyper regulation

Population dynamics of the crabHepatus pudibundus(Herbst, 1785) (Decapoda, Aethridae) on the southern coast of São Paulo state, Brazil

Relative growth and morphological sexual maturity of the crab Hepatus pudibundus (Herbst, 1785) (Decapoda: Aethridae) in southeast Brazil

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