Gill Function in the Amphipod Megalorchestia-(Orchestoidea)-Californiana (Brandt, 1851) (Crustacea). Spicer, J. I. & McMahon, B. R. Canadian Journal of Zoology-Revue Canadienne De Zoologie, 72(6):1155–1158, June, 1994.
doi  abstract   bibtex   
In the amphipod Megalorchestia (Orchestoidea) californiana immersed in full-strength seawater at 15 degrees C, gill excision resulted in a decrease in CO2 and NH4+ excretion but not in O-2 uptake. When the temperature was increased to 25 degrees C, however, there was a significant decrease in all gas exchange as a result of gill excision. Gill excision also resulted in a decrease in haemolymph pH and PCO2 at both experimental temperatures. Furthermore, pretreatment of large individuals with the carbonic anhydrase inhibitor acetazolamide resulted in a significant increase in haemolymph pH, PCO2, and total CO2 regardless of whether or not gills were present. There was, however, a significant increase in haemolymph PCO2 in treated individuals as a result of gill excision. This study has shown that the coral gills of this talitrid amphipod were involved in gas and ion exchange (particularly CO2 and NH4+). It is unlikely, however, that the gills were the only sites of exchange.
@article{spicer_gill_1994,
	title = {Gill {Function} in the {Amphipod} {Megalorchestia}-({Orchestoidea})-{Californiana} ({Brandt}, 1851) ({Crustacea})},
	volume = {72},
	shorttitle = {Gill {Function} in the {Amphipod} {Megalorchestia}-({Orchestoidea})-{Californiana} ({Brandt}, 1851) ({Crustacea})},
	doi = {10.1139/z94-154},
	abstract = {In the amphipod Megalorchestia (Orchestoidea) californiana immersed in full-strength seawater at 15 degrees C, gill excision resulted in a decrease in CO2 and NH4+ excretion but not in O-2 uptake. When the temperature was increased to 25 degrees C, however, there was a significant decrease in all gas exchange as a result of gill excision. Gill excision also resulted in a decrease in haemolymph pH and PCO2 at both experimental temperatures. Furthermore, pretreatment of large individuals with the carbonic anhydrase inhibitor acetazolamide resulted in a significant increase in haemolymph pH, PCO2, and total CO2 regardless of whether or not gills were present. There was, however, a significant increase in haemolymph PCO2 in treated individuals as a result of gill excision. This study has shown that the coral gills of this talitrid amphipod were involved in gas and ion exchange (particularly CO2 and NH4+). It is unlikely, however, that the gills were the only sites of exchange.},
	number = {6},
	journal = {Canadian Journal of Zoology-Revue Canadienne De Zoologie},
	author = {Spicer, J. I. and McMahon, B. R.},
	month = jun,
	year = {1994},
	keywords = {Megalorchestia californiana, Orchestoidea californiana},
	pages = {1155--1158},
}

Downloads: 0