Synopsis
The water, total lipid, protein and ash content have been measured in larval, metamorphosing (stages 1–7) and downstream migrantGeotria australis caught in Western Australia between October 1977 and August 1979. The total lipid content of ammocoetes changed markedly with season and increased with body size. Although, unlike other species, the ammocoetes ofG. australis continue to increase in length during the latter part of larval life, the relative amount of total lipid still rose during this period, eventually reaching levels equivalent to approximately 14% of the wet body weight at the commencement of metamorphosis. During the six months between the onset of metamorphosis and the downstream migration, total lipid declined to approximately 8%. Assays for phospholipid of larval and metamorphosingG. australis indicated that changes in total lipid were almost entirely due to variations in neutral lipid. Changes in the percentage amount of total lipid were accompanied by an inverse but slightly greater amount of change in percentage water. During metamorphosis, the absolute amount of total lipid in a ‘standard animal’ declined from 122 mg at stage 1 to 53 mg at stage 7, whereas water rose initially from 597 mg at stage 1 to 638 mg at stage 3, before declining to 442 mg by stage 7. Although the percentage amount of protein and ash tended to increase slightly during larval life, neither showed conspicuous seasonal changes. In both relative and absolute terms, protein declined during metamorphosis. A comparison of the data on the proximate body composition inG. australis and holarctic lampreys shows that different strategies have been employed to accumulate large amounts of fat by the end of larval life and to utilize protein during metamorphosis.
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References cited
Applegate, V.C. 1950. Natural history of the sea lamprey,Petromyzon marinus, in Michigan. Spec. scient. Rep. U.S. Wildl. Serv. Fish. 55: 1–237.
Association of Official Analytical Chemists. 1965. Methods of Analyses. 10th ed. Ass. Off. Anat. Chem., Washington, D.C.
Beamish, F.W.H., I.C. Potter & E. Thomas. 1979. Proximate composition of the adult anadromous sea lamprey,Petromyzon marinus, in relation to feeding, migration and reproduction. J. Anim. Ecol. 48: 1–19.
Beamish, R.J. 1980. Adult biology of the river lamprey (Lampetra ayresi) and the Pacific lamprey (L. tridentata) from the Pacific coast of Canada. Can. J. Fish. Aquat. Sci. 37: 1906–1923.
Bird, D.J. & I.C. Potter. 1979a. Metamorphosis in the paired species of lampreys,Lampetra fluviatilis (L.) andLampetra planeri (Bloch). 1. A description of the timing and stages. J. Linn. Soc. Lond. (Zool.) 65: 127–143.
Bird, D.J. & I.C. Potter. 1979b. Metamorphosis in the paired species of lampreys,Lampetra fluviatilis (L.) andLampetra planeri (Bloch). 2. Quantitative data for body proportions, weights, lengths and sex ratios. J. Linn. Soc. Lond. (Zool.) 65: 145–160.
Chen, P.S., T.Y. Toribara & H. Warner. 1956. Microdetermination of phosphorus. Analyt. Chem. 28: 1756–1758.
Creaser, C.W. & C.S. Hann. 1929. The food of larval lampreys. Pap. Mich. Acad. Sci. 10: 433–437.
Fels, G. & R. Veatch. 1959. Microdetermination of ammonium and protein nitrogen. Analyt. Chem. 31: 451–452.
Folch, J., M. Lees & G.H. Sloane Stanley. 1957. A simple method for the isolation and purification of total lipids from animal tissues. J. biol. Chem. 266: 497–509.
Hardisty, M.W. 1961. The growth of larval lampreys. J. Anim. Ecol. 30: 357–371.
Hardisty, M.W. 1969. Information on the growth of the ammocoete larva of the anadromous sea lampreyPetromyzon marinus in British rivers. J. Zool., Lond. 159: 139–144.
Hardisty, M.W. & R.J. Huggins. 1970. Larval growth in the river lamprey,Lampetra fluviatilis. J. Zool., Lond. 161: 549–559.
Hardisty, M.W. & I.C. Potter. 1971a. The behaviour, ecology and growth of larval lampreys. pp. 85–125. In: M. W. Hardisty & I.C. Potter (ed.) The Biology of Lampreys, Volume 1, Academic Press, London.
Hardisty, M.W. & I.C. Potter. 1971b. The general biology of adult lampreys. pp. 127–206. In: M.W. Hardisty & I.C. Potter (ed.) The Biology of Lampreys, Volume 1, Academic Press, London.
Hardisty, M.W. & I.C. Potter. 1971c. Paired species. pp. 249–277. In: M.W. Hardisty & I.C. Potter (ed.) The Biology of Lampreys, Volume 1, Academic Press, London.
Hubbs, C.L. & I.C. Potter. 1971. Distribution, phylogeny and taxonomy. pp. 1–65. In: M.W. Hardisty & I.C. Potter (ed.) The Biology of Lampreys, Volume 1, Academic Press, London.
Love, R.M. 1970. The Chemical Biology of Fishes. Academic Press, London. 547 pp.
Lowe, D.R., F.W.H. Beamish & I.C. Potter. 1973. Changes in the proximate body composition ofPetromyzon marinus (L.) during larval life and metamorphosis. J. Fish. Biol. 5: 673–682.
Manwell, C. 1963. The blood proteins of Cyclostomes. A study in phylogenetic and ontogenetic biochemistry. pp. 372–455. In: A. Brodal & F. Fänge (ed.) The Biology of Myxine, Universitetsforlaget, Oslo.
Moore, J.W. & F.W.H. Beamish. 1973. Food of larval sea lamprey (Petromyzon marinus) and American brook lamprey (Lampetra lamottei). J. Fish. Res. Board Can. 30: 7–15.
Moore, J.W. & I.C. Potter. 1976a. A laboratory study on the feeding of larvae of the brook lampreyLampetra planeri (Bloch). J. Anim. Ecol. 45: 81–90.
Moore, J.W. & I.C. Potter. 1976b. Aspects of feeding and lipid deposition and utilization in the lampreys,Lampetra fluviatilis (L.) andLampetra planeri (Bloch). J. Anim. Ecol. 45: 699–712.
Niimi, A.J.J. & F.W.H. Beamish. 1974. Bioenergetics and growth of largemouth bass (Micropterus salmoides) in relation to body weight and temperature. Can. J. Zool. 52: 447–456.
O'Boyle, R.N. & F.W.H. Beamish. 1977. Growth and intermediary metabolism of larval and metamorphosing stages of the landlocked sea lamprey,Petromyzon marinas L. Env. Biol. Fish. 2: 103–120.
Ooi, E.C. & J.H. Youson. 1977. Morphogenesis and growth of the definitive opisthonephros during metamorphosis of anadromous sea lamprey,Petromyzon marinus L. J. Embryol. exp. Morph. 42: 219–235.
Potter, I.C. 1980a. The Petromyzoniformes with particular reference to paired species. Can. J. Fish. Aquat. Sci. 37: 1595–1615.
Potter, I.C. 1980b. Ecology of larval and metamorphosing lampreys. Can. J. Fish. Aquat. Sci. 37: 1641–1657.
Potter, I.C. & F.W.H. Beamish. 1977. The freshwater biology of adult anadromous sea lampreysPetromyzon marinus. J. Zool., Lond. 181: 113–130.
Potter. I.C. & P.I. Nicol. 1968. Electrophoretic studies on the haemoglobins of Australian lampreys. Aust. J. exp. Biol. med. sci. 46: 639–641.
Potter, I.C., D. Cannon & J.W. Moore. 1975. The ecology of algae in the Moruya River. Australia, Hydrobiologia 47: 415–430.
Potter, I.C., R.W. Hilliard & D.J. Bird, 1980, Metamorphosis in the Southern Hemisphere lamprey,Geotria australis. J. Zool., Lond. 190: 405–430.
Potter, I.C. & R. Strahan. 1968, The taxonomy of the lampreysGeotria andMordacia and their distribution in Australia, Proc. Linn. Soc. Lond. 179: 229–240.
Potter, I.C., G.M. Wright & J.H. Youson. 1978, Metamorphosis in the anadromous sea lamprey,Petromyzon marinus L. Can. J., Zool. 56: 561–570.
Purvis, H.A. 1979. Variations in growth, age at transformation and sex ratio of sea lampreys reestablished in chemically treated tributaries of the upper Great Lakes. Tech, Rep. Gt. Lakes Fishery Commn. 35: 1–36.
Rogers, P.A., A.R. Glenn & I.C. Potter. 1980. The bacterial flora of the gut contents and environment of larval lampreys. Acta zool., Stockh. 61: 23–27.
Schroll, R, 1959. Zur Ernährungsbiologie der steirischen AmmocötenLampetra planeri (Bloch) undEudontomyzon danfordi (Regan). Int. Revue ges. Hydrobiol. 44: 395–429.
Wright, G.M. & J.H. Youson, 1976, Tranformation of the endostyle of the anadromous sea lamprey,Petromyzon marinus L,, during metamorphosis, l, Light microscopy and autoradiography with125I, Gen. Comp, Endocrinol. 30: 243–257.
Youson. J.H. & K.L. Connelly. 1978, Development of longitudinal mucosal folds in the intestine of the anadromous sea lamprey.Petromyzon marinus L., during metamorphosis, Can, J, Zool. 56: 2364–2371.
Youson. J.H. & I.C. Potter. 1979, A description of the stages in the metamorphosis of the anadromous sea lamprey,Petro-myzon marinus L, Can. J. Zool. 57: 1808–1817.
Youson, J.H., J. Lee & I.C. Potter, 1979, The distribution of fat in larval. metamorphosing, and young adult anadromous sea lampreys,Petromyzon marinus L. Can. J. Zool 57: 237–246.
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Bird, D.J., Potter, I.C. Proximate body composition of the larval, metamorphosing and downstream migrant stages in the life cycle of the Southern Hemisphere lamprey, Geotria australis . Environ Biol Fish 6, 285–297 (1981). https://doi.org/10.1007/BF00005758
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DOI: https://doi.org/10.1007/BF00005758