No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The full text of this article is not currently available.
You must be logged in to use this functionality
Abstract Maintaining a sustainable egg bank through rapid maturation and the production of large clutches is an important strategy for large branchiopods surviving in ephemeral habitats, and such egg banks can only be replenished by the recruitment of hatched eggs as a function of fitness (F). The ability to reach a threshold F represents a key adaptation to selection pressures. We investigated daily changes in the population density/size and hatching numbers of fairy shrimp, Branchinella kugenumaensis, and estimated their F values in an ephemeral pool, Siangtian Pond, in northern Taiwan during 2005, and four cohorts were observed. The number of hatchings per cohort ranged from to , representing a hatching density between 1.42 and 2.83 , and the number of newly produced eggs per cohort ranged from to , representing a high level of recruitment, ranging from 10,631 to 37,425 in the sediment, which yielded a mean fitness of 2.05 produced eggs per hatching (CI = 1.82 ∼ 2.35). The threshold F for replenishing the hatched portion of the egg bank was derived theoretically and ranges from 1.39 to 2.36, varying with the probability of reproduction failure and the rate of egg mortality. Because only a small fraction of the egg bank hatches during each inundation episode, the observed F may not be sufficient for replenishing the remaining egg bank. Therefore, additional strategies for long-term persistence are required, which may be achieved by exhibiting occasional indeterminate growth in addition to the regular determinate growth pattern of this species.
Full text loading...
Brendonck L. 1996 "Diapause, quiescence, hatching requirements: what we can learn from large freshwater branchiopods (Crustacea: Branchiopoda: Anostraca, Notostraca, Conchostraca)" Hydrobiologia Vol 320 85 97 http://dx.doi.org/10.1007/BF00016809
Brendonck L. , Belk D. 1997 " Branchinella maduraiensisRaj (Crustacea, Branchiopoda, Anostraca) shown by new evidence to be a valid species" Hydrobiologia Vol 359 93 99 http://dx.doi.org/10.1023/A:1003173727950
Brendonck L. , Riddoch B. J. 2000 "Egg bank dynamics in anostracan desert rock pool populations (Crustacea: Branchiopoda)" Archiv fur Hydrobiologie Vol 148 71 84
Ellner S. , Hairston N. G. Jr 1994 "Role of overlapping generations in maintaining genetic variation in a fluctuating environment" American Naturalist Vol 143 403 417 http://dx.doi.org/10.1086/285610
Grygier M. J. , Kusuoka Y. , Ida M. Lake Biwa Museum Field Reporters 2002 "Distributional survey of large branchiopods of rice paddies in Shiga Prefecture, Japan: a Lake Biwa Museum project based on lay amateur participation" Hydrobiologia Vol 486 133 146 http://dx.doi.org/10.1023/A:1021342500327
Hairston N. G. J. , Van Brunt R. A. , Kearns C. M. , Engstrom D. R. 1995 "Age and survivorship of diapausing eggs in a sediment egg bank" Ecology Vol 76 1706 1711 http://dx.doi.org/10.2307/1940704
Hall R. E. , MacDonald L. J. 1975 "Hatching of the anostracan branchiopod Chirocephalus diaphanusPrévost I. Osmotic processes and the possible role of glycerol" Hydrobiologia Vol 46 369 375 http://dx.doi.org/10.1007/BF00028280
Hildrew A. G. 1985 "A quantitative study of the life history of a fairy shrimp, Brachiopoda anostraca, in relation to the temporary nature of its habitat, a Kenyan rainpool" Journal of Animal Ecology Vol 54 99 110 http://dx.doi.org/10.2307/4623
Huang S-L. , Wang C-C. , Huang W-P. , Chou L-S. 2010 "Indeterminate growth of the fairy shrimp, Branchinella (Branchinellites) kugenumaensis(Branchiopoda: Anostraca) in an unpredictable ephemeral pool" Journal of Crustacean Biology Vol 30 366 372 http://dx.doi.org/10.1651/09-3235.1
Ishikawa C. 1895 "Phyllopod Crustacea of Japan" Zoological Magazine Vol 7 1 6
Khalaf A. N. , Hall R. E. 1975 "Hatching of the anostracan branchiopod Chirocephalus diaphanusPrévost II. The role of embryonic movements" Hydrobiologia Vol 46 377 390 http://dx.doi.org/10.1007/BF00028281
Maffei C. , Mura G. , Zarattini P. 2002 "Assessing anostracan (Crustacea: Branchiopoda) cyst bank size: An attempt at a standardized method" Hydrobiologia Vol 486 255 261 http://dx.doi.org/10.1023/A:1021319322617
Mura G. 1993 "Habitat and life history of Chirocephalus marchesoniiRuffo and Vesentini 1957, an endemic fairy shrimp from Monti Sibillini, Central Italy" Rivista di Idrobiologia Vol 32 73 104
Philippi T. E. , Simovich M. A. , Bauder E. T. , Moorad J. A. , Moorad J. A. 2001 "Habitat ephemerality and hatching fractions of a diapausing anostracan (Crustacea: Branchiopoda)" Israel Journal of Zoology Vol 47 387 396 http://dx.doi.org/10.1560/LU8G-9HVP-YR80-XCL0
Raj P. J. S. 1961 "Morphology and distribution of Branchinella kugenumaensis(Ishikawa), var maduriRaj" The Ohio Journal of Science Vol 61 257 262
Simovich M. A. , Hathaway S. A. 1997 "Diversified bet-hedging as a reproductive strategy of some ephemeral pool Anostracans (Branchiopoda)" Journal of Crustacean Biology Vol 17 38 44 http://dx.doi.org/10.2307/1549460
Vanschoenwinkel B. , Seaman M. , Brendonck L. 2010 "Hatching phenology, life history and egg bank size of fairy shrimp Branchipodopsisspp. (Branchiopoda, Crustacea) in relation to the ephemerality of their rock pool habitat" Aquatic Ecology
Yamada C. 1999 "The life history of Branchinella kugenumaensisIshikawa (Crustacea, Branchiopoda), with special reference to the number of generations and the changes of body color with their growth. (in Japanese)" The Nanki Seibutu [aka Nankiseibutu] Vol 42 148 154