Selective Predation by Bluegill Sunfish (<i>Lepomis macrochirus</i>) on Three Species of<i>Diaptomus</i>(Copepoda) from Subtropical Florida

Elmore, James L.; Vodopich, Darrell S.; Hoover, Jan Jeffrey

doi:10.1080/02705060.1983.9664591

Cited by 9 publications

(6 citation statements)

References 11 publications

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“…We found that individuals preying on Daphnia averaged 37.7 (SE ± 13.4) per gut (collected but unreported data as part of Carpenter et al 2001). This number of Daphnia per gut was within ranges of bluegill feeding data reported by O'Brien et al (1976), Elmore et al (1983), and Li et al (1985) that analyzed their specialization upon Daphnia and copepods. Thus, if a LMB gut sample had !…”

Section: Designating Episodic Zooplanktivorysupporting

confidence: 72%

Episodic zooplanktivory by largemouth bass (Micropterus salmoides) on Daphnia: a 25-year natural history record from a small northern temperate lake

Butts

Hodgson

Guidone

et al. 2020

Journal of Freshwater Ecology

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We observed episodic zooplanktivory by largemouth bass (Micropterus salmoides; LMB) ! 150 mm total length (TL) on the cladoceran Daphnia spp. over two decades in a small oligotrophic lake. While zooplanktivory is beneficial for young-of-year and juvenile LMB, dietary utilization of Daphnia by adults is unusual because zooplankton are not energetically favorable and the LMB buccal cavity is poorly adapted for filter feeding. We classified the threshold of ! 38 Daphnia per feeding event as an episode of zooplanktivory based on data from a zooplankton specialist, the bluegill sunfish (Lepomis macrochirus). In this study, 1718 LMB were caught, marked, sampled, and released. Gut contents at the time of capture were collected via gastric lavage. We captured the same 612 LMB 3 or more times. Of these, approximately 26% had at least one episode of zooplanktivory and approximately 6% had multiple episodes. There was no relationship between the population sizes of Daphnia and LMB, but the yearly percentage of individual LMB with at least one episode of zooplanktivory significantly increased with LMB population density. Episodes of zooplanktivory were more likely to occur later in the season when Daphnia were more abundant in the lake. The probability of an individual LMB having a repeat episode of zooplanktivory was not significantly different from expected; however, the probability of a LMB not having a single episode was significantly greater than expected by random chance signifying that some LMB were better than others at eliminating Daphnia from their diets. The probability of episodic zooplanktivory significantly decreased with increasing fish TL and weight but significantly increased with increasing Daphnia abundance. LMB without episodes of zooplanktivory achieved significantly greater maximum weight and body condition factor than those with them, but there was no statistical difference in their maximum TL or longevity (duration between first and final capture of the same LMB). In contrast, LMB with episodes of zooplanktivory had significantly greater instantaneous growth rates than those without. These results ARTICLE HISTORY

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Section: Designating Episodic Zooplanktivorysupporting

confidence: 72%

Episodic zooplanktivory by largemouth bass (Micropterus salmoides) on Daphnia: a 25-year natural history record from a small northern temperate lake

Butts

Hodgson

Guidone

et al. 2020

Journal of Freshwater Ecology

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“…Most research on seasonality of Copepoda in Florida lakes has concentrated on the herbivorous calanoid Diaptomus and the carnivorous cyclopoid Mesocyclops . In addition to determining the overall species composition of Diaptomus according to trophic state, intralake temporal differences in the intensity of invertebrates ( Chaoborus, Mesocyclops ) and fish (gizzard shad, bluegill) predation are likely responsible for the observed seasonality of diaptomids in Florida lakes [25–27]. The seasonality of Mesocyclops , one of the principal invertebrate predators on Diaptomus , is also strongly controlled by temporal variability in the intensity of predation from chao‐borids and gizzard shad [15].…”

Section: Resultsmentioning

confidence: 99%

USE of outdoor freshwater pond microcosms: II. Responses of biota to pyridaben

Rand

Clark

Holmes

2000

Enviro Toxic and Chemistry

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The effects of pyridaben, an insecticide‐miticide on zooplankton, macroinvertebrates, and fish were studied in outdoor freshwater microcosms using an analysis of variance design with three chemical concentrations (0.34, 3.4, 34.0 μg/L) and one untreated control randomized among 24 tanks. Each treatment was replicated six times. Monitoring was conducted during an 11‐month baseline phase followed by a total of three months for treatment and posttreatment phases. Two applications of a wettable powder formulation were sprayed directly below the water surface with a 30‐d interval between treatments. Copepoda adult abundance was significantly reduced at 34.0 μg/L but recovery occurred within 6 weeks after application. Abundance of copepoda nauplii was significantly reduced at 3.4 and 34.0 μg/L, after applications one and two; effects were more severe at 34.0 μg/L and recovery was more rapid at 3.4 μg/L. Abundance of Rotifera was reduced at 34.0 μg/L, after applications one and two, and recovery occurred within 8 weeks for all groups except Polyarthra and Keratella. Of the most abundant Cladocera, abundance of Alona was not significantly affected and abundance of Latonopsis was significantly reduced at 34.0 μg/L, after applications one and two, but recovery occurred within 6 weeks. Abundance of Latonopsis also was significantly reduced at 3.4 μg/L, after applications one and two, but recovery occurred within 2 weeks. A significant decrease occurred in the abundances of Cnidaria, Insecta, and Hydracarina at 34.0 μg/L, only after application one. Pyridaben was toxic to bluegill at 34.0 μg/L, but was not acutely toxic at the laboratory 96‐h LC50 concentration (∼3.4 μg/L).

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“…Holopedium gibberum and cyclopoid copepods (primarily M. edax) accounted for smaller portions of total biomass, except for spring and fall peaks in Lake Hatchineha. The dominant macrozooplankton taxa in the Chain-of-Lakes (Diaptomus dorsalis, D. floridanus, Ceriodaphnia rigaudi, Daphnia ambigua, D. lumholtzii, Eubosmina tubicen, H. gibberum, and M. edax) are characteristic of subtropical Florida lakes [39,40,41,42,43,44]. These lakes typically display dominance by copepods and reduced densities of cladocerans in summer months.…”

Section: Zooplanktonmentioning

confidence: 99%

“…Elmore [41] indicated that the distribution of Diaptomus species in Florida lakes is determined by resource competition and vulnerability to fish predation. D. dorsalis is considered to be more successful in eutrophic Florida lakes because of both its higher population growth rate and its greater ability to avoid vertebrate predators [42]. In contrast, the reduced biomass of cladocerans during summer months may be a result of stress due to high water temperature [45].…”

Section: Zooplanktonmentioning

confidence: 99%

Zooplankton Structure and Potential Food Web Interactions in the Plankton of a Subtropical Chain-of-Lakes

Havens

2002

The Scientific World JOURNAL

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This study evaluates the taxonomic and size structure of macro-zooplankton and its potential role in controlling phytoplankton in the Kissimmee Chain-of-Lakes, six shallow interconnected lakes in Florida, U.S. Macro-zooplankton species biomass and standard limnological attributes (temperature, pH, total phosphorus [TP], chlorophyll a [Chl a], and Secchi transparency) were quantified on a bimonthly basis from April 1997 to February 1999. Concentrations of TP ranged from below 50 to over 150 μg l. Peak concentrations of particulate P coincided with maximal Chl a, and in one instance a high concentration of soluble reactive P followed. The cladoceran zooplankton was dominated by small species, including Eubosmina tubicen, Ceriodaphnia rigaudi, and Daphnia ambigua. The exotic daphnid, D. lumholtzii, periodically was abundant. The copepods were strongly dominated by Diaptomus dorsalis, a species previously shown to be highly resistant to fish predation. These results, and findings of controlled experiments on a nearby lake with a nearly identical zooplankton species complement, suggest that fish predation may be a major factor structuring the macro-zooplankton assemblage. Zooplankton biomass, on the other hand, may be affected by resource availability. There was a significant positive relationship between average biomass of macro-zooplankton and the average concentration of TP among the six lakes. No such relationship existed between zooplankton biomass and Chl a, suggesting that the predominant food web in these systems may be based on bacteria-plankton, as has been documented in nearby Lake Okeechobee. All of the zooplankton taxa encountered in the Kissimmee Chain-of-Lakes (except Mesocyclops edax) are known bacteria grazers in Florida lakes. Phytoplankton biomass, measured as Chl a, was strongly associated with TP, both within and across lakes. Phytoplankton biomass was not associated with the biomass of zooplankton. These results, when considered in the context of nutrient-addition, zooplankton-exclosure studies on Lake Okeechobee, support the hypothesis that phytoplankton biomass in subtropical lakes is regulated by —bottom-up,“ rather than —top-down“ forces.

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Selective Predation by Bluegill Sunfish (Lepomis macrochirus) on Three Species ofDiaptomus(Copepoda) from Subtropical Florida

Cited by 9 publications

References 11 publications

Episodic zooplanktivory by largemouth bass (Micropterus salmoides) on Daphnia: a 25-year natural history record from a small northern temperate lake

Episodic zooplanktivory by largemouth bass (Micropterus salmoides) on Daphnia: a 25-year natural history record from a small northern temperate lake

USE of outdoor freshwater pond microcosms: II. Responses of biota to pyridaben

Zooplankton Structure and Potential Food Web Interactions in the Plankton of a Subtropical Chain-of-Lakes

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