Bythotrephes cederstroemi Diapausing Egg Distribution and Abundance in Lake Michigan and the Environmental Cues for Breaking Diapause

Yurista, Peder M.

doi:10.1016/s0380-1330(97)70897-9

Cited by 25 publications

(39 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…During this interval, there was also an increased incidence of young in the brood pouches of second-instar individuals, an instar normally not reproductive. The presence of broods in second-instar individuals has been noted previously as a ''rare event'' (Yurista 1992). In Lake Michigamme, up to 19% of all parthenogenetic young were carried by second-instar individuals for a brief period in midsummer.…”

Section: Resultsmentioning

confidence: 58%

“…The eggs develop into embryos nourished by fluids secreted from specialized cells in the floor of a completely closed brood pouch (Mordukhai-Boltovskaya 1957). The fully developed young are released as free-swimming first-instar individuals (Yurista 1992). When the environment deteriorates, sexual reproduction is initiated (see references in Burkhardt 1994).…”

Section: Methodsmentioning

confidence: 99%

“…Each individual was classified as to instar, sex (if second instar or older), and number of parthenogenetic young or diapausing eggs in the brood sac (if sac formed). The number of parthenogenetic young usually cannot be determined until they enter the eye stage of development (Yurista 1992;Lehman et al 1997), so we used the number of eyespots in embryos to indicate brood size. Because this interval covers only 16-25% of the total developmental time, large samples were required for accurate enumeration.…”

Section: Methodsmentioning

confidence: 99%

“…Bythotrephes is the only strictly freshwater genus of the family Cerocopagidae. In its native Eurasian and introduced North American range, B. cederstroemi (Schoedler) appears to be a stenothermic animal with a preferred temperature range of ϳ12-18ЊC (Yurista 1997), although it can tolerate temperatures in the lower 20s. The species was first reported from the Laurentian Great Lakes region in 1982-1984 and had reached Lake Huron by December 1984, Lake Ontario by September 1985, Lake Erie by October 1985, Lake Michigan by September 1986, and Lake Superior by August 1987 (see references in MacIsaac et al 2000).…”

mentioning

confidence: 99%

See 3 more Smart Citations

Zooplankton life cycles: Direct documentation of pelagic births and deaths relative to diapausing egg production

Jarnagin

Kerfoot

Swan

2004

Limnology & Oceanography

View full text Add to dashboard Cite

Zooplankton demographics operate over multiple time scales corresponding to pelagic parthenogenetic generations, an overwintering stage, and an ''egg bank.'' Comparisons of pelagic birth and death rates with seasonal diapausing egg production provide insights into local species persistence. The spiny cladoceran (Bythotrephes) possesses morphological adaptations (spines and thick-walled diapausing eggs) that lessen, but do not eliminate, predation effects by fish. Because caudal spines are retained throughout life and are indigestible in fish guts, spine accumulation in sediment traps directly documents patterns of seasonal mortality. Here, we contrast deposition of spines and diapausing eggs in a recently colonized inland lake (Lake Michigamme) with deposition in a larger source lake (Lake Michigan). Direct mortality estimates at the inland lake correspond well with traditional indirect estimates from egg ratio techniques. Although spines are effective against abundant small fish in the inland lake, individuals are susceptible to ingestion by late-season young of year and larger fish. Laboratory experiments confirm that fish are responsible for spine breakage in the water column, accounting for an estimated 62-71% of seasonal mortality. Effects of late-season predation are lessened because diapausing eggs survive gut passage, yet yearly production of diapausing eggs is low in Lake Michigamme. A more balanced pelagic birth(death) to diapausing egg relationship exists in Lake Michigan, probably because egg-carrying adults find better refuge in central, deeper waters. Since spines catch on seines and diapausing eggs survive gut passage, use of bait fish and live wells promotes Bythotrephes dispersal.Zooplankton studies in lakes traditionally concentrate on seasonal pelagic dynamics of local populations (N p ; Fig. 1). Yearly population growth is treated as the consequence of a dynamic balance between instantaneous birth (b) and death (d) rates (r ϭ b Ϫ d). Netting of plankton allows seasonal estimates of brood sizes and population density. Temperature-dependent regressions for developmental duration convert egg ratio measures into instantaneous birth rates (b), whereas changes in pelagic population size allow independent estimates of the realized population growth rate (r). The difference between the instantaneous birth rate and the re-1

show abstract

Section: Resultsmentioning

confidence: 58%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Zooplankton life cycles: Direct documentation of pelagic births and deaths relative to diapausing egg production

Jarnagin

Kerfoot

Swan

2004

Limnology & Oceanography

View full text Add to dashboard Cite

show abstract

“…In Bythotrephes, resting eggs are viable for less than a year (Andrew and Herzig 1984); thus, the current year's egg bank is composed primarily of resting eggs deposited in the preceding year. Inadequate hatching conditions in the benthos in spring months, such as low dissolved oxygen levels, light levels, or temperature, may delay the onset of Bythotrephes emergence from resting eggs or contribute to low hatching success rates (Herzig 1985, Yurista 1997, Brown 2008, Brown and Branstrator 2011. Finally, the later season start may be an artifact of sampling offshore in a deep lake.…”

Section: Bythotrephes Seasonal Phenologymentioning

confidence: 99%

Dynamics of the invasive spiny water flea, Bythotrephes longimanus, in Lake Simcoe, Ontario, Canada

Kelly

Young

Winter

et al. 2013

View full text Add to dashboard Cite

The invasion of the nonindigenous zooplankter Bythotrephes longimanus in Lake Simcoe has the potential to impact overall ecosystem functioning, yet there is currently no information regarding the status and dynamics of its population. We used a combination of uni-and multivariate analyses to examine variation in Bythotrephes interannual and seasonal abundance, and life-history characteristics in Lake Simcoe from 1999 to 2007, and we explored the biotic (predators, prey) and/or abiotic (water quality, temperature) factors that may have regulated its population over this period. The mean annual abundance of Bythotrephes varied by an order of magnitude over the period of study and was significantly associated with epilimnetic temperature and prey and predator abundance. Bythotrephes typically appeared in early summer and had 2 seasonal abundance peaks, which varied in magnitude and timing within and among years. August and September Secchi depth and total phosphorus concentration predicted groups of years with similar Bythotrephes phenologies, lending further support to the role of water clarity as a significant component of this visual predator's habitat in its invaded range. Bythotrephes body size and reproductive patterns also varied seasonally, possibly reflecting the seasonal availability of cladoceran prey, predation pressure from planktivorous fish, or adaptations to avoid unfavourable conditions. Overall, a complex interaction of fish predation, food availability, temperature, and water clarity controlled the dynamics of Bythotrephes in Lake Simcoe. Changes to the Lake Simcoe ecosystem due to Bythotrephes invasion may have important consequences for the ecosystem services provided by the lake and merit further investigation.

show abstract

Dormancy in freshwater zooplankton: Induction, termination and the importance of benthic-pelagic coupling

2004

View full text Add to dashboard Cite

For a short-lived organism, such as a fresh water zooplankter, the ways of coping with years of local recruitment failure are either to disperse between habitats and recolonise or to disperse in time through diapause. Diapause is common among freshwater zooplankton and is generally seen as a way to escape periods of harsh environmental conditions. The egg-bank or pool of diapausing copepodites in lake sediments resulting from the production of diapausing stages has several implications for zooplankton ecology, genetics, and evolution which we outline in this review. The presence of a benthic dormant stage also creates a coupling between the benthic habitat and the pelagic, and we argue that zooplankton phenology is a result of selective forces in both habitats. The spatial distribution of diapausing eggs appears to be governed by random resuspension dynamics coupled with higher hatching rates in shallow waters. For diapausing copepodites, however, an active choice of where Aquatic Sciencesand how deep to enter the sediment may affect their distribution. In a reanalysis of published data, we found a size-dependent bathymetric distribution and vertical distribution in the sediment of diapausing cyclopoid copepodites. Our review of published laboratory studies showed that predictors of seasonal change such as photoperiod and temperature were the only type of cues used for the termination of diapause. We also found a relation between generation length and the type of cue used for diapause induction: copepods mainly used seasonal cues from the abiota, rotifers mainly used cues from the biotic environment, and cladocerans used a mix of both types. We describe patterns in emergence timing and contribution to population dynamics from studies using in situ estimation of emergence, and conclude that hatching from dormant stages may qualitatively and quantitatively affect zooplankton population dynamics and seasonal succession.

show abstract

Bythotrephes cederstroemi Diapausing Egg Distribution and Abundance in Lake Michigan and the Environmental Cues for Breaking Diapause

Cited by 25 publications

References 26 publications

Zooplankton life cycles: Direct documentation of pelagic births and deaths relative to diapausing egg production

Zooplankton life cycles: Direct documentation of pelagic births and deaths relative to diapausing egg production

Dynamics of the invasive spiny water flea, Bythotrephes longimanus, in Lake Simcoe, Ontario, Canada

Dormancy in freshwater zooplankton: Induction, termination and the importance of benthic-pelagic coupling

Contact Info

Product

Resources

About