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Luquet, C.M.; Cervino, C.O.; Ansaldo, M.; Pereyra, V.C.; Kocmur, S.; Dezi, R.E. "Physiological response to emersion in the amphibious crab Chasmagnathus granulata Dana (Decapoda Grapsidae): Biochemical and ventilatory adaptations" (1998) Comparative Biochemistry and Physiology - A Molecular and Integrative Physiology. 121(4):385-393
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Abstract:

The adaptation of Chasmagnathus granulata to air breathing depends on two types of physiological mechanisms: (1) Biochemical adjustments, comprising the achievement of new steady state values for partial pressure of carbon dioxide (P(co2)) and total carbon dioxide concentration (C(co2)). The initial increase in hemolymph bicarbonate is stabilized by dehydration to CO2 presumably catalyzed by Carbonic anhydrase (CA) at the basolateral side of the gill epithelium. Thus, an adequate transbranchial gradient of P(co2) is restored. Inhibition of CA with acetazolamide (Az) reduces the rate of CO2 excretion and elevates P(co2). The respiratory acidosis caused by increased P(co2) is compensated by increase in the difference between Na+ and Cl- concentrations. Az does not affect hemolymph ionic concentrations. (2) Ventilatory control: untreated animals show a significant decrease in scaphognathite frequency (F(sc)) during emersion, while Az treated crabs show a slight increase of this variable. F(sc) of Az crabs tends to decrease with hemolymphatic CO2, presumably by clearance of the CA inhibitor from hemolymph. These results suggest that C. granulata possess a ventilatory control based on a primary oxygen-dependent stimulus and a secondary one dependent on CO2.

Registro:

Documento: Artículo
Título:Physiological response to emersion in the amphibious crab Chasmagnathus granulata Dana (Decapoda Grapsidae): Biochemical and ventilatory adaptations
Autor:Luquet, C.M.; Cervino, C.O.; Ansaldo, M.; Pereyra, V.C.; Kocmur, S.; Dezi, R.E.
Filiación:Depto. de Ciencias Biológicas, Fac. Cie. Exact. Y Nat., Univ. B., Buenos Aires, Argentina
Instituto Antártico Argentino, Cerrito 1248, 1010, Buenos Aires, Argentina
INEUCI-CONICET, Pab. II Ciudad Universitaria, 1428, Buenos Aires, Argentina
Palabras clave:Acid-base balance; Crabs; Heart frequency; Ion regulation; Respiration; Ventilatory frequency; acetazolamide; bicarbonate; carbon dioxide; carbonate dehydratase; carbonate dehydratase inhibitor; chloride; sodium; adaptation; animal experiment; article; biochemistry; carbon dioxide tension; controlled study; crab; gill; hemolymph; immersion; male; nonhuman; respiration control; respiratory acidosis
Año:1998
Volumen:121
Número:4
Página de inicio:385
Página de fin:393
DOI: http://dx.doi.org/10.1016/S1095-6433(98)10148-4
Título revista:Comparative Biochemistry and Physiology - A Molecular and Integrative Physiology
Título revista abreviado:Comp. Biochem. Physiol. A Mol. Integr. Physiol.
ISSN:10956433
CODEN:CBPAB
CAS:acetazolamide, 1424-27-7, 59-66-5; bicarbonate, 144-55-8, 71-52-3; carbon dioxide, 124-38-9, 58561-67-4; carbonate dehydratase, 9001-03-0; chloride, 16887-00-6; sodium, 7440-23-5
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10956433_v121_n4_p385_Luquet

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Citas:

---------- APA ----------
Luquet, C.M., Cervino, C.O., Ansaldo, M., Pereyra, V.C., Kocmur, S. & Dezi, R.E. (1998) . Physiological response to emersion in the amphibious crab Chasmagnathus granulata Dana (Decapoda Grapsidae): Biochemical and ventilatory adaptations. Comparative Biochemistry and Physiology - A Molecular and Integrative Physiology, 121(4), 385-393.
http://dx.doi.org/10.1016/S1095-6433(98)10148-4
---------- CHICAGO ----------
Luquet, C.M., Cervino, C.O., Ansaldo, M., Pereyra, V.C., Kocmur, S., Dezi, R.E. "Physiological response to emersion in the amphibious crab Chasmagnathus granulata Dana (Decapoda Grapsidae): Biochemical and ventilatory adaptations" . Comparative Biochemistry and Physiology - A Molecular and Integrative Physiology 121, no. 4 (1998) : 385-393.
http://dx.doi.org/10.1016/S1095-6433(98)10148-4
---------- MLA ----------
Luquet, C.M., Cervino, C.O., Ansaldo, M., Pereyra, V.C., Kocmur, S., Dezi, R.E. "Physiological response to emersion in the amphibious crab Chasmagnathus granulata Dana (Decapoda Grapsidae): Biochemical and ventilatory adaptations" . Comparative Biochemistry and Physiology - A Molecular and Integrative Physiology, vol. 121, no. 4, 1998, pp. 385-393.
http://dx.doi.org/10.1016/S1095-6433(98)10148-4
---------- VANCOUVER ----------
Luquet, C.M., Cervino, C.O., Ansaldo, M., Pereyra, V.C., Kocmur, S., Dezi, R.E. Physiological response to emersion in the amphibious crab Chasmagnathus granulata Dana (Decapoda Grapsidae): Biochemical and ventilatory adaptations. Comp. Biochem. Physiol. A Mol. Integr. Physiol. 1998;121(4):385-393.
http://dx.doi.org/10.1016/S1095-6433(98)10148-4