Macrozoobenthos community plays an important role in material cycle and energy flow in riverine ecosystem. During June, 2003 to June 2004, an investigation on the life cycle and production of dominant species of macrozoobenthos community in a second-grade river of Hanjiang River catchment was carried out. From the upper reach to the lower reach of Heizhuchong stream, we chose six types of habitats to sample. Station 1(S1) lied in the middle of the stream with big round rocks there in the upper reach, station 2(S2) was in the inner part of a weir with cobble substratum, station 3(S3) in the middle of a peacefully flowing section with gravel-sand bottom, station 4(S4) at the side of the riparian with aquatic macrophytes and snags, station 5(S5) was in the middle of the riffle, station 6(S6) at the lower reach with a sewage outlet ca 100 meters upper. At each station, two quantitative samples were taken with a 167μm Surber net, and the samples were sieved with a 167μm net, sorted in a porcelain dish with naked eye. The specimens were kept in 10% formalin for later processing. The life cycle of Leptophlebia sp. and Ephemera sp. was analyzed by the monthly size frequency distribution, the cohort and annual production were estimated by size frequency method. The results showed that the dominant species Leptophlebia sp. and Ephemera sp. appeared to develop two generations per year, and there was a little overlap with the two generations of Leptophlebia sp., but it could not be a matter to make out the two generations. As far as Leptophlebia sp. was concerned, the pupation mainly occurred in fall and winter; while pupation of Ephemera sp. mainly occurred in summer and winter; the abundance and biomass of the Leptophlebia sp. population reached their highest peaks(913 ind.g·m-2, 0.992 0 g·m-2) in October and August,respectively, while the abundance and biomass of the Ephemera sp. population reached theirs(107 indg·m-2,2.3639 g·m-2) in June and March. The cohort production and cohort P/B ratio of the Leptophlebia sp. population were 19.0181 g·m-2·a-1 and 5.7, the annual production and P/B ratio were 38.0362 g·m-2·a-1 and 11.4. The cohort production and cohort P/B ratio of the Ephemera sp. population were 38.0159 g·m-2·a-1 and 5.9, the annual production and P/B ratio were 76.0318 g·m-2·a-1 and 11.8.
闫云君*, 李晓宇. 黑竹冲河小裳蜉(Leptophlebia sp.)和蜉蝣(Ephemera sp.)周年生产量[J]. , 2006, 25(2): 97-101.
YAN Yun-jun, LI Xiao-yu. Secondary Production of Leptophlebia sp and Ephemera sp in Heizhuchong Stream. , 2006, 25(2): 97-101.
[1] Benke A C.Baldi.1993.Memorial Lecture:Concepts and patterns of invertebrate production in running waters[J].Verhandlung der Internationale Vereinigung für theoretische und angewandte Limnologie,25:15-38.
[2] Covich A P,M A Palmer and T A Crowl.1999.The Role of Benthic Invertebrate Species in Freshwater Ecosystems[J].BioScience,49(2):119-127.
[4] Georgian T and Wallace J B.1983.Seasonal production dynamics in a guild of periphyton-grazing insects in a southern Appalachian stream[J].Ecology,64:1236-1248.
[5] Hynes H B N and M J Coleman.1968.A simple method of assessing the annual production of stream benthos[J].Limnology and Oceangraphy,13:569-573.
[6] Hamilton A L.1969.On estimating annual production[J].Limnology and Oceanography.14:771-782.
[7] Menzie,C A.1980.A note on the Hynes method of estimating secondary production[J].Limnology and Oceangraphy,25(4):770-773.
[8] Perán A,J Velasco and A Millán.1999.Life cycle and secondary production of Caenis luctuosa(Ephemeroptera) in a semiarid stream(Southeast Spain)[J].Hydrobiologia,400:187-194.
[9] González1 J M,A Basagurenl and J Pozo.2001.Life history and production of Caenis luctuosa(Burmeister)(Ephemeroptera,Caenidae) in two nearby reaches along a small stream[J].Hydrobiologia,452:209-215.
[10] Salas M and D Dudgeon.Life histories.2003.production dynamics and resource utilisation of mayflies(Ephemeroptera) in two tropical Asian forest streams[J].Freshwater Biology,48:485-499.
[11] Lobinske R J,Ali A and I J.1996.stout.Life history and productivity of Hexagenia limbata(Ephemeroptera:Ephemeridae) and selected physico-chemical parameters in two tributaries of the Wekiva river,central Florida[J].Florida Entomologist,79(4):543-551.
[12] Gonzalez J M,A Basaguren and J Pozo.2003.Life history,production and coexistence of two Leptophlebiid mayflies in three sites along a Northern Spain stream[J].Archiv für Hydrobiology,158(3):303-316.
[16] Christman V D and J R Voshell.1992.Life history,growth and production of Ephemeroptera in experimental ponds[J].Annals of the Entomological Society of America.85:705-712.
