Relevant bibliographies by topics / Scaphognathite

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Academic literature on the topic 'Scaphognathite'

Author: Grafiati
Published: 2 June 2025
Last updated: 31 July 2025

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Journal articles on the topic "Scaphognathite"

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BURGGREN, WARREN, ALAN PINDER, BRIAN McMAHON, MICHELE WHEATLY, and MICHAEL DOYLE. "Ventilation, Circulation and Their Interactions in the Land Crab, Cardisoma Guanhumi." Journal of Experimental Biology 117, no. 1 (1985): 133–54. http://dx.doi.org/10.1242/jeb.117.1.133.

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Physiological variables for ventilation (scaphognathite frequency, branchial chamber pressure and branchial air flow) and for circulation (heart rate, intracardiac and pericardial haemolymph pressure) were measured in the land crab Cardisoma guanhumi (Latreille). Crabs were studied both in air alone and in air with access to a shallow layer of fresh, brackish or sea water. During complete air exposure, forward scaphognathite beating predominated and reversed scaphognathite beating was very infrequent. Periods of apnoea were rare. When crabs were able to immerse the Milne-Edwards openings to th
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2

Verma, Dharm Raj, Harnam Singh Lodhi, Kunwer Ji Tiwari, Sanjive Shukla, and U. D. Sharma. "Copper sulphate induced changes in scaphognathite oscillations and oxygen consumption of fresh water prawn, Macrobrachium lamarrei (Crustacea- Decapoda)." Journal of Applied and Natural Science 2, no. 1 (2010): 34–37. http://dx.doi.org/10.31018/jans.v2i1.91.

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Fresh water prawns, Macrobrachium lamarrei were subjected to acute concentration, 0.304 mg/l (96h LC50) of Copper sulphate to evaluate its effects on scaphognathite oscillations and oxygen consumption rate. Scaphognathite oscillations showed initial increase after 24h, thereafter significantly (t = 9.24; P<0.001) decreased up to 72h and finally tend to increase after 96h but remained below the controls where as oxygen consumption showed continuous decreasing trend through out the experiment up to 96h (t = 16.53; P<0.001) than control ones. Possible interaction of copper in relation to re
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3

Stegen, E., and M. K. Grieshaber. "Adenosine increases ventilation rate, cardiac performance and haemolymph velocity in the American lobster Homarus americanus." Journal of Experimental Biology 204, no. 5 (2001): 947–57. http://dx.doi.org/10.1242/jeb.204.5.947.

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The effects of adenosine and adenine nucleotides on haemolymph velocity and on heart rate and scaphognathite frequency were investigated in the American lobster Homarus americanus. The infusion of 0.25-2.4 nmol g(−1) min(−1) adenosine produced steady-state concentrations of 2–3 micromol l(−1) adenosine and approximately 80 micromol l(−1) inosine in the haemolymph. No hanges in haemolymph concentration of AMP, hypoxanthine, xanthine or IMP were observed. Adenosine increases haemolymph velocity in the sternal artery from 55+/−29 to 204+/−53 mm s(−1) and in the posterior aorta from 21+/−7 to 54+/
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4

ZINEBI, H., J. SIMMERS, and J. P. TRUCHOT. "A Peripheral Arterial O2-Sensitive Pathway to the Respiratory Oscillator of the Shore Crab Carcinus Maenas." Journal of Experimental Biology 148, no. 1 (1990): 181–99. http://dx.doi.org/10.1242/jeb.148.1.181.

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Experiments on whole crab, Carcinus maenas, as well as on two types of isolated perfused preparationswere performed to locate the origin of the O2 chemosensitivity which drives hyperventilation in hypoxia and hypoventilation in hyperoxia. Electromyographic recordings from the scaphognathite muscles confirmed the existence of strong ventilatory responses in the whole animal exposed to various water oxygen levels. Furthermore, surgical section of the circumoesophageal connectivesdid not suppress these responses, thereby excluding the cerebral ganglia as the only site or relay for the O2 chemosen
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5

Decelle, Johan, Ann Andersen, and Stéphane Hourdez. "Morphological adaptations to chronic hypoxia in deep-sea decapod crustaceans from hydrothermal vents and cold seeps." Marine biology 157 (March 6, 2010): 1259–69. https://doi.org/10.1007/s00227-010-1406-8.

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Animals inhabiting hydrothermal vents and cold seeps face conditions that are challenging for survival. In particular these two habitats are characterized by chronic hypoxia, sometimes reaching complete anoxia. The characteristics of the scaphognathite and gills were studied in 4 species of shrimp and 3 species of crabs from hydrothermal vents and cold seeps, in order to highlight potential adaptations that could enhance oxygen acquisition in comparison to shallow-water relatives. All the vent and seep species studied here exhibit significantly larger scaphognathites, likely allowing more wate
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6

Yan, Yan, Liangmin Huang, and Suying Miao. "Occurrence of the epizoic barnacle Octolasmis angulata on the crab Charybdis feriatus from Daya Bay, China." Journal of the Marine Biological Association of the United Kingdom 84, no. 3 (2004): 619–20. http://dx.doi.org/10.1017/s0025315404009646h.

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This is the first record of the epizoic barnacle (Octolasmis angulata) on the crab Charybdis feriatus. Prevalence of O. angulata was 85·7% and mean intensity of infestation was 59±64·5 (range 3–239). Prevalence and mean intensity of infestation increased with host size in the range 55–120 mm carapace width. Barnacles occurred most frequently on the gills, anterior branchial chamber wall in the epibranchial space, occasionally on the wall of the branchial chambers beneath the gills and on the scaphognathite within the branchial chambers. Most barnacles were observed on the hypobranchial surface
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7

Airriess, C., and B. Mcmahon. "CARDIOVASCULAR ADAPTATIONS ENHANCE TOLERANCE OF ENVIRONMENTAL HYPOXIA IN THE CRAB CANCER MAGISTER." Journal of Experimental Biology 190, no. 1 (1994): 23–41. http://dx.doi.org/10.1242/jeb.190.1.23.

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Unrestrained crabs instrumented with probes for ultrasonic measurement of arterial haemolymph flow were subjected to 6 h of hypoxic exposure. During this interval, the inhalant O2 partial pressure was reduced in steps from 18 to 3 kPa. Measurement of haemolymph flow through all arteries leaving the heart allowed direct calculation of cardiac output, stroke volume and the distribution of cardiac output for both non-stressed and hypoxic animals. Resting levels of cardiac output were low compared with previously reported values for this and other species of decapod crustaceans. During exposure to
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8

JOSEPHSON, ROBERT K., and DARRELL R. STOKES. "The Contractile Properties of a Crab Respiratory Muscle." Journal of Experimental Biology 131, no. 1 (1987): 265–87. http://dx.doi.org/10.1242/jeb.131.1.265.

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1. Contraction of scaphognathite muscle L2B of the green crab Carcinus maenas is strongly dependent on stimulus number and frequency. Single, supramaximal stimuli evoke little or no tension. When stimulated with shocks in either short bursts (10 stimuli in 0.5s or less) or long bursts (5 s of stimulation), the isometric tension from the muscle increases with increasing stimulus frequency to a maximum at about 150 Hz at 15°C, beyond which tension declines with further increase in stimulus frequency. 2. There can be facilitation of both contraction and relaxation between short bursts of stimuli.
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9

Haefner, Paul A. "Application of Ultrasound Technology To Crustacean Physiology; Monitoring Cardiac and Scaphognathite Rates in Brachyura." Crustaceana 69, no. 6 (1996): 788–94. http://dx.doi.org/10.1163/156854096x00817.

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10

Oba, Takashi, Kooichi Konishi, and Seiji Goshima. "Larval and postlarval development of Pagurus nigrofascia (Decapoda: Anomura: Paguridae) reared in the laboratory." Journal of the Marine Biological Association of the United Kingdom 86, no. 6 (2006): 1407–19. http://dx.doi.org/10.1017/s0025315406014445.

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Zoeal, megalopal and first crab stages of Pagurus nigrofascia are described and illustrated from laboratory reared specimens. Larvae were reared at temperatures 6°C, 12°C, 18°C, and 25°C. Survival rates of larvae were considerably higher at 12°C and 18°C, but were low at 6°C and 25°C. Larvae and postlarvae of P. nigrofascia can be distinguished from seven morphologically similar species based on adult or larval morphological features. Zoeal stages of this species are distinguished by, for example, setal formulae of maxillule, maxilla and maxilliped 1. The megalopal stage can be identified by t
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Book chapters on the topic "Scaphognathite"

1

Moyse, J., and G. Smaldon. "Crustacea Iii Malacostraca Eucarida." In The Marine Fauna of the British Isles and North-West Europe. Oxford University PressOxford, 1990. http://dx.doi.org/10.1093/oso/9780198573562.003.0010.

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Abstract The Decapoda is the largest natural grouping within the Mala¬ costraca. In all decapods the thoracic segments are fused dorsally to a carapace, a fold of which extends ventrally on each side of the animal, enclosing the gills and constituting a branchial chamber. The maxilla has a large, modified endopodite, the scaphognathite, which drives water through the branchial chamber by rhythmic beating.
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