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Academic literature on the topic 'Perch fishes'

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Published: 6 September 2023

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Journal articles on the topic "Perch fishes"

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Wedderburn, S. D., C. M. Bice, and T. C. Barnes. "Prey selection and diet overlap of native golden perch and alien redfin perch under contrasting hydrological conditions." Australian Journal of Zoology 62, no. 5 (2014): 374. http://dx.doi.org/10.1071/zo14018.

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Many freshwater fishes have been introduced outside their natural range. The consequences have included the decline or extinction of native fishes, principally due to competition and predation. Redfin perch (Perca fluviatilis) is a highly efficient predatory fish species that was introduced to Australia in the 1800s. It now has a broad distribution in the Murray–Darling Basin, but its impacts on native fishes are largely unstudied. It often cohabits with native golden perch (Macquaria ambigua ambigua), which is similar from a trophic ecomorphology perspective. We examine prey selection and diet overlap of adult redfin perch and golden perch under contrasting hydrological conditions in terminating lakes of the Murray–Darling Basin. Prey selection by both species varied substantially between drought and flood conditions. Diet overlap of redfin perch and golden perch was significant only during flood, and was apparently related to pelagic prey availability. There were dietary differences during drought that imply that resource partitioning occurred between the perches, possibly because competitive interactions were intensified. Conversely, the promotion of pelagic prey fishes during flooding apparently facilitated resource sharing. The findings suggest that redfin perch can directly compete with native piscivores for prey. The potential impacts on native piscivores and small-bodied fish populations warrant further experimental and field investigations.
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Hrabik, Thomas R., John J. Magnuson, and Ann S. McLain. "Predicting the effects of rainbow smelt on native fishes in small lakes: evidence from long-term research on two lakes." Canadian Journal of Fisheries and Aquatic Sciences 55, no. 6 (June 1, 1998): 1364–71. http://dx.doi.org/10.1139/f98-032.

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We assessed predictability of negative interactions between native fishes and exotic rainbow smelt (Osmerus mordax) through field experiments and long-term data analysis for two lakes in Wisconsin. Predictions were made based on thermal preferences, diet characteristics, and published accounts of interactions between smelt and yellow perch (Perca flavescens) and smelt and cisco (Coregonus artedii). Our results indicate predation is the most likely cause for the extirpation of cisco from Sparkling Lake in 1990. In Crystal Lake, native yellow perch experienced significant overlap in distribution and diet with smelt. The condition of adult perch was negatively correlated with smelt abundance indicating competition was occurring. Smelt feed on a wide size range of prey items making this species a threat to native fishes, especially when spatial overlap is high. Information on spatial and temporal overlap and diet enable useful predictions about the effect of smelt invasions on native fishes.
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Crowder, Larry B., Michael E. McDonald, and James A. Rice. "Understanding Recruitment of Lake Michigan Fishes: The Importance of Size-Based Interactions Between Fish and Zoopiankton." Canadian Journal of Fisheries and Aquatic Sciences 44, S2 (December 19, 1987): s141—s147. http://dx.doi.org/10.1139/f87-317.

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Mechanisms controlling recruitment of fishes appear to be strongly size dependent. It is now established that size-selective predators can dramatically reduce zooplankton size, but little is known about the effects of zooplankton size on growth and recruitment of fish through the post-larval stage. As fish grow, their optimal prey size increases; if large zooplankton are uncommon, growth rates may be reduced, prolonging vulnerability to predation or other size-dependent mortality sources and thus reducing recruitment. Most Lake Michigan fishes, including offshore species such as bloater (Coregonus hoyi) and nearshore species such as yellow perch (Perca flavescens), shift from feeding on zooplankton in their early years to feeding on benthic prey or to piscivory. Predation mortality on many larval and juvenile fishes including bloater and yellow perch has been shown to be size or growth rate dependent. As alewife (Alosa pseudoharengus) increased in abundance in Lake Michigan in the 1960s, large zooplankton declined and both bloater and perch recruitment was poor. In the late 1970s and early 1980s, alewife declined, large zooplankton increased, and strong year classes of bloater and perch were formed. Based on these dynamics and recent research on resource use, foraging behavior, and recruitment dynamics of larval and juvenile fishes, we suggest two hypotheses. First, young-of-year and juvenile pelagic fishes may have the major size-structuring effects on epilimnial zooplankton in Lake Michigan. And second, if large zooplankton are uncommon, as they were in Lake Michigan in the 1960s, growth rates and recruitment of native fishes will be reduced. Size-based interactions between fish and zooplankton appear to have important implications for growth and recruitment success of fishes.
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Hilling, Corbin D., Nate D. Taylor, Stuart A. Welsh, and Dustin M. Smith. "Population Characteristics of Yellow Perch in a Central Appalachia Hydropower Reservoir." Journal of Fish and Wildlife Management 9, no. 2 (August 17, 2018): 486–95. http://dx.doi.org/10.3996/012018-jfwm-007.

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Abstract Estimates of population characteristics of sport fishes inform fisheries management decisions and provide feedback on management strategies. Cheat Lake provides an unusual fishery in West Virginia because the hydropower reservoir supports a Yellow Perch Perca flavescens population. We estimated age structure, size structure, condition, total instantaneous mortality, growth, and summer diet for Cheat Lake Yellow Perch based on electrofishing collections in 2012. From 302 individuals, we observed a maximum age of 9 y. Maximum age, average size, and growth of females in the sample exceeded those of males. Cheat Lake Yellow Perch scored low on the relative weight index, but generally exhibited faster growth than other populations, even when compared by sex. Estimated annual survival was 0.63 (95% CI = 0.51–0.78), which is comparable to other exploited populations. These data support the presence of an ontogenetic diet shift from consumption of zooplankton to macroinvertebrates and fishes as Yellow Perch age. This study is the first evaluation we are aware of on Yellow Perch population characteristics in West Virginia, providing baseline data to enhance management decisions and direct future studies.
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Dembkowski, Daniel J., David W. Willis, and Melissa R. Wuellner. "Synchrony in larval yellow perch abundance: the influence of the Moran Effect during early life history." Canadian Journal of Fisheries and Aquatic Sciences 73, no. 10 (October 2016): 1567–74. http://dx.doi.org/10.1139/cjfas-2015-0310.

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Recruitment may vary substantially in fish populations, which can drive not only adult population characteristics but also the dynamics of fishes dependent on the species of interest and recreational fisheries for these species. However, spatiotemporal trends in population fluctuations and potential drivers of recruitment variability are poorly understood. Therefore, we used a long-term (2000–2014) data set to estimate the extent of spatial synchrony in larval abundance and factors influencing variability in recruitment of yellow perch (Perca flavescens). Contrary to the prevailing paradigm that spatial synchrony in population fluctuations (i.e., recruitment) is typically absent or occurs at small spatial scales (<50 km) for freshwater species, abundance of larval yellow perch was synchronous among spatially segregated systems across a geographic scale of at least 180 km. Additionally, variation in larval yellow perch density was influenced by spatially-correlated climatic and hydrological variables (indicative of the Moran Effect). Results ultimately broaden the scale at which factors were previously thought to influence recruitment of freshwater fishes and provide important insight to patterns and processes that structure yellow perch populations.
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Hanson, John Mark, and William C. Leggett. "Effect of Competition Between Two Freshwater Fishes on Prey Consumption and Abundance." Canadian Journal of Fisheries and Aquatic Sciences 43, no. 7 (July 1, 1986): 1363–72. http://dx.doi.org/10.1139/f86-170.

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The effect of inter- and intraspecific competition on the type and quantity of food consumed by fish, and on the abundance of macroinvertebrate prey, was examined by manipulating densities of yellow perch (Perca flavescens) and pumpkinseed (Lepomis gibbosus) stocked into littoral zone enclosures at levels approximating 0.5, 1.0, and 2.0 times the measured total fish biomass on the littoral zone. In intraspecific competition experiments, neither species showed a change in the type of prey eaten (principally macroinvertebrates). The amount of food eaten by yellow perch reared at high (26 g/m2) densities was significantly depressed relative to that of perch reared at low (6.5 g/m2) and natural (13 g/m2) densities. There were no significant differences in the amount of food eaten by pumpkinseed at the three fish densities. The gut fullness of pumpkinseed reared at high densities, however, was biased to a significant but unknown degree by the inclusion of a nonfood item, macrophyte fragments, in the estimates. No other fish consumed macrophytes. In interspecific competition experiments, the gut fullness of yellow perch and pumpkinseed reared together (combined density 13 g/m2) did not differ from that of fish reared alone at low or natural densities. The diet (principally macroinvertebrates) of the superior competitor, pumpkinseed, did not change relative to that of pumpkinseed reared alone. The inferior competitor, yellow perch, exhibited a significant change in diet. Microcrustaceans (an energetically inferior food) comprised 30–53% of the diet (by weight) of yellow perch reared with pumpkinseed compared with < 1% of the diet of perch reared alone. Total macroinvertebrate biomass and abundance were unaffected by differences in fish biomass in the enclosures.
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Confer, John L., and Linda M. O'Bryan. "Changes in Prey Rank and Preference by Young Planktivores for Short-Term and Long-Term Ingestion Periods." Canadian Journal of Fisheries and Aquatic Sciences 46, no. 6 (June 1, 1989): 1026–32. http://dx.doi.org/10.1139/f89-133.

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Feeding by young planktivorous fishes (yellow perch, Perca flavescens, rainbow trout, Oncorhynchus mykiss, and lake trout, Salvelinus namaycush) was examined. Prey rank was determined by offering a swarm of one prey type and observing ingestion rates. During the initial feeding burst, larger prey generally ranked higher. During long-term feeding the largest prey, large Daphnia magna, generally declined in rank while the smallest prey, Diaptomus sicilis, increased to the highest or second highest rank. Prey preference was measured with fishes feeding in a swarm of mixed prey. Initially small rainbow trout and yellow perch selected for large Daphnia then switched to Diaptomus. For small rainbow trout this switch in prey preference paralleled the change in prey rank. For yellow perch, large Daphnia and Diaptomus provided essentially the same long-term ingestion rates. The nearly exclusive selection for Diaptomus during long-term feeding did not agree with prey rank based on caloric ingestion rates. Previous work has shown that yellow perch have a high growth efficiency on a diet of Diaptomus. Selection for Diaptomus suggests that fish can rank prey by nutritional quality as well as caloric ingestion rates.
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Hanson, John Mark, and William C. Leggett. "Experimental and Field Evidence for Inter- and Intraspecific Competition in Two Freshwater Fishes." Canadian Journal of Fisheries and Aquatic Sciences 42, no. 2 (February 1, 1985): 280–86. http://dx.doi.org/10.1139/f85-035.

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Direct evidence for intra- and interspecific competition in fishes was obtained by manipulating populations of yellow perch (Perca flavescens) and pumpkinseed (Lepomis gibbosus) stocked into littoral zone enclosures. Stocking densities were above, below, and equal to measured littoral zone fish biomass. There were no significant differences in mean percent weight change at given densities among repeated experiments (each of 14-d duration). In experiments testing for intraspecific competition, all fish reared at low density gained weight, all fish reared at high density lost weight, and mean weight change at natural density did not differ from 0.0. In experiments testing for interspecific competition, growth of pumpkinseed did not differ from growth of pumpkinseed reared alone at equivalent densities whereas growth of yellow perch was depressed relative to growth of yellow perch reared alone at equivalent densities. These growth changes did not result from behavioural interactions. We conclude that (a) inter- and intraspecific competition for food is significant at natural fish densities and (b) pumpkinseed are superior to perch when competing for food. A marked reduction in yellow perch growth in Lake Memphremagog between 1972 and 1983, coincident with a major increase in pumpkinseed abundance, is consistent with these findings and our interpretations.
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Mirza, Reehan, and Douglas Chivers. "DO JUVENILE YELLOW PERCH USE DIET CUES TO ASSESS THE LEVEL OF THREAT POSED BY INTRASPECIFIC PREDATORS?" Behaviour 138, no. 10 (2001): 1249–58. http://dx.doi.org/10.1163/15685390152822201.

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AbstractThe mechanisms that drive the evolution of intraspecifc predation (cannibalism) are unclear. Many authors speculate that predators can make substantial gains in nutrition and reproductive output by consuming conspecifics. However, by consuming conspecifics, predators may risk decreasing their inclusive fitness by consuming kin or increasing the chances of pathogen transmission. In fishes intraspecific predation is typically observed when resource levels are low. During these periods it is important for prey fishes to be able to accurately assess their level of predation risk from cannibalistic conspecifics. Prey animals may be able to do this by using chemical cues available in the predator's diet. The last meal consumed by the predator may give important information for prey animals to assess predation risk. We exposed juvenile yellow perch, Perca flavescens, to chemical cues of adult perch fed a diet of either juvenile perch, spot tail shiners, Notropis hudsonius, swordtails, Xiphophorus helleri, or a control of distilled water. Spot tail shiners and juvenile perch commonly form mixed species shoals and are vulnerable to the same suite of predators. Swordtails do not co-occur with yellow perch or spot tail shiners. We found that juvenile perch increased shelter use significantly more when exposed to chemical cues of adult perch fed juvenile perch or spot tails, compared to adult perch fed swordtails or those exposed to distilled water. This suggests that the level of chemosensory assessment used by juvenile perch is quite sophisticated and that the antipredator response can be mediated by specific cues in the predator's diet. This study is the first to demonstrate a response of a fish to chemical cues from intraspecific predators. Future studies should examine the importance of predator diet cues in responses to chemical cues from intraspecific predators.
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Parrish, Donna L., and F. Joseph Margraf. "Prey Selectivity by Age 0 White Perch (Morone americana) and Yellow Perch (Perca flavescens) in Laboratory Experiments." Canadian Journal of Fisheries and Aquatic Sciences 48, no. 4 (April 1, 1991): 607–10. http://dx.doi.org/10.1139/f91-077.

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We conducted prey selectivity experiments by age 0 white perch (Morone americana) and yellow perch (Perca flavescens) in the laboratory. Lake Erie zooplankters were introduced into tanks where both fishes were in single and combined species assemblages. We identified and counted the introduced plankton samples and the contents of fish stomachs after the feeding period. Our results showed no differences in prey consumed within a fish species, whether in single or combined assemblages (ANOVA, p > 0.05). There were a few differences between white perch and yellow perch consumption of each prey taxa (ANOVA); however, the arrays of organisms eaten were not different (MANOVA, p > 0.01). We note that the majority of prey consumed were smaller taxa, which is counter to optimal foraging predictions in relation to prey size, but is consistent with other research on young planktivore prey selectivities.
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Dissertations / Theses on the topic "Perch fishes"

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Miller, Peggy E. "Diagnosis, prevalence, and prevention of the spread of the parasite Heterosporis sp. (Microsporida: Pleistophoridae) in yellow perch (Perca flavescens) and other freshwater fish in northern Minnesota, Wisconsin, and in Lake Ontario /." Connect to online version, 2009. http://minds.wisconsin.edu/handle/1793/37972.

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Gallinat, Michael P. "Population analysis and food habits of the yellow perch, Perca flavescenes (Mitchill), in Indiana waters of Lake Michigan, 1984-86." Virtual Press, 1987. http://liblink.bsu.edu/uhtbin/catkey/483967.

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Yellow perch, Perca flavescens (Mitchill), were collected by trawling and gillnetting in Indiana waters of Lake Michigan near Michigan City, Indiana. Sampling was conducted during the months of June, July and August from 1984 through 1986.Growth rates and length-weight relationships were found to be considerably lower than those reported previously. Males declined 38 mm at age I, 55 mm at age II, 56 mm at age III and 35 mm at age IV comparing 1986 to 1976. Females showed similar declines for the same period at 40 mm for age I, 58 mm at age II, 66 mm at age III and 53 mm at age IV. The primary reason for the decrease in growth appears to be due to the current high population density of yellow perch in Indiana waters of Lake Michigan.Maturation of males for 1986 appears to be slower than that of 1984. All male perch were mature by age III in 1984. However, only 68x of the males were mature at the same age in 1986. In 1984, 94% of the females were mature by age IV while 86% were mature at the same age in 1986.Differences in maturation rate may be a reflection of the reduced growth rates. Size at maturity was found to be similar for both sexes in 1984 and 1986. All females were mature by 230-239 mm in 1984 and 220-229 mm in 1986. All male perch were mature at 180-189 mm in 1984 and 220-229 mm in 1986.Total estimated average annual percent mortalities of 79, 58, 66 and 55 were calculated for combined sexes from age composition analyses end trawl catch data for 1976 and 1984-86. Yellow perch production for 100 fish was estimated for June through August using the Allen curve method. Biomass of substock ( <130 mm), stock ( >129 mm) and quality fish (200 mm or larger) were estimated using Proportional Stock Density to investigate population structure. The Allen curve biomass models were modified to more accurately reflect the trawl catch density data as an index of population changes in 1976 compared to 1984-86. Theoretical biomass for the substock component increased 23 fold from 1976 to 1986. Biomass of the stock sized fish was estimated as 15 times greater in 1986 compared to 1976. Quality fish biomass varied from year to year with the average for 1984-86 estimated as 14 times greater than 1976. The most apparent factor now influencing deterioration of growth and resultant quality of the population is decreased mortality/increased survival with increase in biomass. If the low mortality rates observed for 1984-86 remain unchanged, the data indicate continued population density increases will result in even lower growth rates, and a population dominated by a higher percentage of small, non-quality fish.Food habit analyses for 1984 were compared to a diet study of yellow perch in 1972 for the study area. Zooplankton increased from 0.4x in 1972 to 9% of the volume in 1984 for 100-175 mm perch. This trend may reflect an increase in zooplankton populations in response to the population decline of the planktivorous alewife. Young-of-the-year yellow perch made up 85% of the stomach volume for 176-225 mm perch in 1984 while none were found in samples for 1972. This clearly shows yellow perch are resorting to cannibalism resulting from excessive intraspecific competition.Diet analyses by month revealed alewife eggs were moat important during peak abundance in June and July. Yellow perch (YOY) and Pontocoreia affinis became important during August. Analysis by size interval showed zooplankton and insects (primarily Chironomidae) were important to the diet of perch in the 30-59 mm (YOY) size interval. Copepoda were important by percent volume until approximately 60 mm when the zooplankton component switched to Cladocera. Data for 60-119 mm (age I+) fish indicates alewife eggs were important during June but insects became increasingly more important during July and August. Diversity in food items consumed diminished with increase in size as diet of 120-159 mm (age II+) yellow perch consisted largely of fish. Increases in percent volume of rainbow smelt in June and July, and Y0Y perch in August for age II+ and older perch compared to younger/smaller fish may be related to increased capture success. Diet of fish larger than 160 mm (age III+ and older) consisted almost entirely of rainbow smelt and Y0Y yellow perch.Ball State UniversityMuncie, IN 47306
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Tolentino, Scott A. "An analysis of the relative weight (Wr) of yellow perch from Indiana waters of Lake Michigan, 1984-91." Virtual Press, 1992. http://liblink.bsu.edu/uhtbin/catkey/834610.

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Relative weight (Wr) of yellow perch (Perca flavescens) was evaluated for fish collected from the Indiana waters of Lake Michigan in June, July and August of 1976 and 1984-1991. Computation of Wr was completed for individual fish in 20 mm intervals over the size range from 100-219 mm using Wr = (W/Ws) 100 where W=weight of a fish in grams and Ws=standard weight for a fish of the same length. Length was highly correlated with weight in all years for males, females and sexes combined (r=0.97-0.99). Distributions of predicted weights for fish at 130 mm and 250 mm were at or near modes of the populations used to construct the Ws equation for yellow perch. Relative weights consistently decreased with increasing size in all years for males, females and sexes combined. Using 1976 length-weight data when the yellow perch population was sparse and fast growing as a standard (100%) for comparison, relative condition factors (Q) increased with increasing size in some years and decreased with increasing size in others for males females and sexes combined and it did not appear to be length dependent. When comparing Wr at 100 mm and 200 mm by sex and month, f hales had higher Wr than males at 100 mm in seven of nine years in June, six of nine years in July and only four of nine years in August. Female fish also had higher Wr than males at 200 mm in eight of nine years in June and July and six of nine years in August. There appeared to be no consistent pattern or trend of Wr increasing or decreasing by month for males, females or sexes combined. When Kn was evaluated for 100 mm and 200 mm fish by sex and year, male fish had higher Kn than females at 100 mm in all eight years. Male and female fish at 200 mm were more similar; male fish had higher Kn in three years, lower Kn in three years and equal Kn in two years. No relationships were found at 200 mm comparing Wr or Kn and CPE (quality/ h) for males (r=0.43; r=0.42), females (r=0.12; r=0.13) or sexes combined (r=0.28; r=0.22). Simple linear correlations of proportional stock density (PSD) with Wr and Kn revealed relative weights increased with PSD for 100 mm (r=0.51) and 200 mm (r=0.72) fish. Relative condition factors also increased with PSD for 100 mm fish, however the relationship was weak (r=0.30) but a strong correlation was found between Kn and PSD (r=0.81) for 200 mm fish. Based on these results, it appears that either Kn or Wr may be used inassessing the condition of yellow perch from the Indiana waters of Lake Michigan.
Department of Biology
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Stettner, Craig R. "An analysis of the population dynamics of the yellow perch in Indiana waters of Lake Michigan." Virtual Press, 1989. http://liblink.bsu.edu/uhtbin/catkey/560277.

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Age, growth, and abundance data were collected on yellow perch, Perca fla vescen, in Indiana waters of Lake Michigan in 1987 and 1988. The data collected were compared to data on yellow perch in Indiana waters of Lake Michigan dating back to 1975.Changes in growth, mortality, and abundance between 1975 and 1988 were clearly illustrated by the data. Growth has decreased; back-calculation indicates that "quality" (> 200 mm) perch in 1975 were about age II, however, "quality" perch in 1988 were over age V. Annual mortality values produced from following a cohort or comparing age classes indicate that mortality has decreased since 1981, most sharply in 1987 and 1988. Changes in growth and mortality are likely resultant of large changes in abundance. Indices of abundance (biomass and catch-per-uniteffort) reveal that the yellow perch population has become much more dense in the late 1980's than the 1970's and early 1980's. The percentage of quality perch has decreased, however, the abundance of quality perch has increased and peaked in 1988.
Department of Biology
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Danley, Melody L. M. "Effects of AQUI-S® exposure in 3 species of fish from the Sacramento-San Joaquin Delta, California." Morgantown, W. Va. : [West Virginia University Libraries], 2008. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=5762.

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Thesis (Ph. D.)--West Virginia University, 2008.
Title from document title page. Document formatted into pages; contains iii, 33 p. : ill. Includes abstract. Includes bibliographical references (p. 17-21).
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Wellington, Colleen G. "Effects of turbidity and prey density on the foraging success of age-0 yellow perch (Perca flavescens)." Connect to full text in OhioLINK ETD Center, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=toledo1216751590.

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Thesis (M.S.)--University of Toledo, 2008.
Typescript. "Submitted as partial fulfillments of the requirements for The Master of Science Degree in Biology (Ecology-track)." "A thesis entitled"--at head of title. Bibliography: leaves 19-23.
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Russell, David John. "Some aspects of the biology of the Barramundi, Lates calcarifer (Bloch) in Eastern Queensland." Thesis, Queensland University of Technology, 1990. https://eprints.qut.edu.au/35966/1/35966_Russell_1990.pdf.

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The Barramundi (Lates calcarifer Bloch) is a large, percoid fish, highly valued as a commercial and recreational species. In Queensland, it is distributed in estuaries, coastal habitats and freshwater areas accessible to the sea north from about the Noosa River. This study reports on a three year investigation of the movements, reproduction and growth of barramundi at 15 sites along the east Queensland coast. Of the 524 adult and sub-adult barramundi tagged in coastal areas and estuaries of eastern Queensland between 1981 and 1984, 136 (26%) were recaptured. Most recaptures (75%) occurred within a year of the fish being tagged and 32% were recaptured within three months of release. Movements of tagged fish were usually less than five kilometres, with 25 km regarded as rare. While most fish were recaptured at or near the location where they were released (usually an estuary), in the Burdekin delta area there were movements along coastal foreshores and into adjacent streams. Unlike other parts of Australia and Papua New Guinea, barramundi in eastern Queensland are generally not catadromous. The large proportion of short and ephemeral rivers and an increasing number of barriers across the larger river systems have restricted the freshwater habitat available for barramundi. In eastern Queensland, peak spawning occurs from November to February although some spawnings do occur as early as September and as late as April. Gametogenesis commences in August/September and is apparently initiated by a seasonal increase in water temperature and photoperiod. Only weak evidence was found supporting multiple spawning and only one modal size class of developing eggs was generally present in ovaries. Fecundity was high and was found to be exponentially related to length. Barramundi mature as males and later, between about 900 and 1000 mm total length, change sex to females. Length-weight relationships, for both sexes, in all areas were strongly linear. In most areas there were significant differences between male and female length-weight regressions. For each area, estimates of the von Bertalanffy growth parameters K, L00 and t 0 ranged from 0.23 to 0.25, 1189 mm to 1274 mm and -0.44 to -0.49 years respectively. Growth rates were initially faster than those established for barramundi in the Northern Territory, Gulf of Carpentaria and Papua New Guinea, and this as considered to be a possible response to heavy exploitation or environmental conditions.
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Arumugam, Phillip T. "An experimental approach to golden perch (Macquaria ambigua) fry-zooplankton interactions in fry rearing ponds, south-eastern Australia /." Title page, contents and introduction only, 1986. http://web4.library.adelaide.edu.au/theses/09PH/09pha793.pdf.

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Nagel, Cody J. "Effects of spatial and temporal variation on sampling strategies targeting a community of fishes." Virtual Press, 2008. http://liblink.bsu.edu/uhtbin/catkey/1391678.

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Yellow perch, alewife, spottail shiner and round goby trawl catch per unit effort (CPUE) was evaluated in the Indiana waters of Lake Michigan from 1984-2006 to determine whether spatial or temporal variation in CPUE for these species occurred. Differences in CPUE among sites or periods were not clearly distinguished within a single sampling year. However, when compared over a 23 year time frame, spatial and temporal differences became evident. To determine the minimum number of samples needed to detect differences among sites and periods, we ran a Monte Carlo simulation using 23 years of empirical data. This compared favorably to results obtained from a power analysis that identified the minimum number of samples required to identify statistical differences. Sampling effort needed to distinguish differences in CPUE varied both spatially and temporally among the four species. Differences in sampling only became evident when multi-year efforts were employed. In addition, spatial and temporal differences in male and female (mature and immature) yellow perch proportions was also evaluated among our sample sites and periods from 1993-2006.
Department of Biology
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Tremblay, Harold. "Effets des variations du niveau d'eau du Lac Saint-Jean (P.Q.) sur la migration saisonnière de quelques espèces de poissons, en particulier de la perchaude (Perca flavescens) dans le petit marais de Saint-Gédéon /." Thèse, Chicoutimi : Université du Québec à Chicoutimi, 1992. http://theses.uqac.ca.

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Books on the topic "Perch fishes"

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Ludgate, Benjamin G. Responses of fish communities to sustained removals of perch (Perca fluviatilis). 2nd ed. Wellington, N.Z: Dept. of Conservation, 2003.

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Auster, Peter J. Species profiles: Life histories and environmental requirements of coastal fishes and invertebrates (North Atlantic and Mid-Atlantic) : tautog and cunner. Vicksburg, MS: Coastal Ecology Group, U.S. Army Corps of Engineers, Waterways Experiment Station, 1989.

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Fritzsche, Ronald A. Species profiles: Life histories and environmental requirements of coastal fishes and invertebrates (Pacific southwest) : California grunion. Washington, DC: Fish and Wildlife Service, U.S. Dept. of the Interior, 1985.

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Fritzsche, Ronald A. Species profiles: Life histories and environmental requirements of coastal fishes and invertebrates (Pacific southwest) : pile perch, striped seaperch, and rubberlip seaperch. Vicksburg, MS: Coastal Ecology Group, Waterways Experiment Station, U.S. Army Corps of Engineers, 1989.

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Shrader, Terry. Effects of invasive yellow perch on gamefish and zooplankton populations of Phillips Reservoir. Portland, OR: Oregon Dept. of Fish and Wildlife, 2000.

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Stanley, Jon G. Species profiles: Life histories and environmental requirements of coastal fishes and invertebrates (Gulf of Mexico) : American oyster. Washington, DC: Fish and Wildlife Service, U.S. Dept. of the Interior, 1986.

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J, Pitcher T., and Hart Paul J. B, eds. The impact of species changes in African lakes. London: Chapman & Hall, 1995.

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Bently, Peter. Top place Percy. London: QED, 2012.

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Bently, Peter. Top place Percy. Mankato, Minn: QEB Pub., 2012.

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Ianelli, James N. Status and future prospects for the Pacific ocean perch resource in waters off Washington and Oregon as assessed in 2000. [Seattle, Wash: National Oceanic and Atmospheric Administration, National Marine Fisheries Service, Alaska Fisheries Science Center, 2000.

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Book chapters on the topic "Perch fishes"

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Kestemont, P., C. Mélard, J. A. Held, and K. Dabrowski. "Culture Methods of Eurasian Perch and Yellow Perch Early Life Stages." In Biology and Culture of Percid Fishes, 265–93. Dordrecht: Springer Netherlands, 2015. http://dx.doi.org/10.1007/978-94-017-7227-3_9.

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Toner, Damien. "The Market for Eurasian Perch." In Biology and Culture of Percid Fishes, 865–79. Dordrecht: Springer Netherlands, 2015. http://dx.doi.org/10.1007/978-94-017-7227-3_34.

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Policar, Tomáš, Azin Mohagheghi Samarin, and Charles Mélard. "Culture Methods of Eurasian Perch During Ongrowing." In Biology and Culture of Percid Fishes, 417–35. Dordrecht: Springer Netherlands, 2015. http://dx.doi.org/10.1007/978-94-017-7227-3_16.

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Briland, Ruth D., Cathleen M. Doyle, and David A. Culver. "Large-Scale Production of Yellow Perch, Walleye, and Hybrid Walleye in Ponds." In Biology and Culture of Percid Fishes, 469–98. Dordrecht: Springer Netherlands, 2015. http://dx.doi.org/10.1007/978-94-017-7227-3_18.

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Goetz, Frederick W., Daniel R. Rosauer, Michael Grzybowski, Frederick P. Binkowski, and Brian S. Shepherd. "Production of Genetically Defined Perch Broodstocks and Their Selection for Fast Growth." In Biology and Culture of Percid Fishes, 691–97. Dordrecht: Springer Netherlands, 2015. http://dx.doi.org/10.1007/978-94-017-7227-3_26.

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Kestemont, Patrick, and Emilie Henrotte. "Nutritional Requirements and Feeding of Broodstock and Early Life Stages of Eurasian Perch and Pikeperch." In Biology and Culture of Percid Fishes, 539–64. Dordrecht: Springer Netherlands, 2015. http://dx.doi.org/10.1007/978-94-017-7227-3_20.

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Stepien, Carol A., Osvaldo J. Sepulveda-Villet, and Amanda E. Haponski. "Comparative Genetic Diversity, Population Structure, and Adaptations of Walleye and Yellow Perch Across North America." In Biology and Culture of Percid Fishes, 643–89. Dordrecht: Springer Netherlands, 2015. http://dx.doi.org/10.1007/978-94-017-7227-3_25.

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Dabrowski, Konrad, Jacques Rinchard, Sergiusz Czesny, and Malgorzata Korzeniowska. "Effects of Dietary Levels of PUFA Fed to Adult Yellow Perch on the Fatty Acid Composition of Eggs and Larvae Characteristics: New Research Directions." In Biology and Culture of Percid Fishes, 565–86. Dordrecht: Springer Netherlands, 2015. http://dx.doi.org/10.1007/978-94-017-7227-3_21.

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Pitcher, Tony J., and Alida Bundy. "Assessment of the Nile perch fishery in Lake Victoria." In The Impact of Species Changes in African Lakes, 163–80. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0563-7_9.

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Reynolds, J. Eric, Dominique F. Gréboval, and Piero Mannini. "Thirty years on: the development of the Nile perch fishery in Lake Victoria." In The Impact of Species Changes in African Lakes, 181–214. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0563-7_10.

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Conference papers on the topic "Perch fishes"

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Radenkovic, Milena, Aleksandra Miloškovic, Nataša Kojadinovic, Simona Đuretanovic, Tijana Velickovic, Marijana Nikolic, Marija Jakovljevic, and Vladica Simic. "ISHRANA GRABLJIVIH VRSTA RIBA I NJIHOV UTICAJ NA ODRŽANJE STABILNOSTI AKUMULACIJE BOVAN." In XXVI savetovanje o biotehnologiji sa međunarodnim učešćem. University of Kragujevac, Faculty of Agronomy, 2021. http://dx.doi.org/10.46793/sbt26.345r.

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The aim of this study was to investigate the diet of adult predatory fish (pikeperch, perch, pike, and catfish) that inhabit the Bovan reservoir and determine their impact on the ecological stability of the reservoir. The results showed that predators most often used planktivorous fish species in their diet, including bleak, roach, and perch. These species are dominant prey to predators, and at the same time important links in food chains. By feeding on planktivorous fish, predatory fish can contribute to the reduction of the eutrophication of the reservoir and keep this ecosystem stable.
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Mazur, O. E. "NEW DATA ON THE INFECTION OF FISH WITH HEMOFLAGELLATES (PROTOZOA: KINETOPLASTEA) IN SOME WATER BODIES OF BURYATIA (EASTERN SIBERIA)." In THEORY AND PRACTICE OF PARASITIC DISEASE CONTROL. All-Russian Scientific Research Institute for Fundamental and Applied Parasitology of Animals and Plant – a branch of the Federal State Budget Scientific Institution “Federal Scientific Centre VIEV”, 2023. http://dx.doi.org/10.31016/978-5-6048555-6-0.2023.24.262-267.

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New data were received on infection with Kinetoplastida of the family Trypanosomatidae in fish of various taxonomic groups in lakes in the Republic of Buryatia (Eastern Siberia). Kinetoplastids of the genus Trypanosoma recorded in the river perch, common pike, sand sculpin, Siberian loach, crucian carp, and Siberian roach were characterized by the greatest host diversity. The roach (Gusinoe Lake) is recorded for the first time for the Baikal basin as a host for hemoflagellates of this genus. Blood parasites of the genus Trypanoplasma were found in 3 fish species: the pike, perch, and sand sculpin. A clear trend was noted for the increasing infection level in the perch and pike of Gusinoe Lake over a 40-year period. The dace, Amur carp, Amur catfish, burbot, Amur sleeper, and common minnow from Gusinoe Lake were free from blood parasites Trypanosoma sp. and Trypanoplasma sp. Kinetoplastids were not found in roaches from Tsaidam, Shchuchye, Torma, Kotokelskoe and Bolshoye Kicherskoe Lakes. The analysis showed no infection with kinetoplastids in the roach, dace, Baunt whitefish, humpback whitefish, Siberian cisco, perch, burbot, ruff, and pike in the reservoirs of the Baunt Lakes system (Bolshoe Kopylyushi Lake, Maloe Kopylyushi Lake, Baunt Lake, the Lena basin), and crucian carp in reservoirs Klyukvennaya Pad, Cheremukhovoye Lake and Nikitkino Lake (Baikal basin).
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Burdukovskaya, T. G., and Z. N. Dugarov. "ARGULOSIS OF THE PERCH FROM LAKE KENON (ZABAIKALSKY KRAI)." In THEORY AND PRACTICE OF PARASITIC DISEASE CONTROL. All-Russian Scientific Research Institute for Fundamental and Applied Parasitology of Animals and Plant – a branch of the Federal State Budget Scientific Institution “Federal Scientific Centre VIEV”, 2023. http://dx.doi.org/10.31016/978-5-6048555-6-0.2023.24.112-116.

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Crustaceans of the subclass Branchiura Argulus foliaceus cause argulosis, an invasive disease in fish. Arguluses are temporary ectoparasites. Moving along the surface of the host's body, the crustaceans look for places accessible to blood vessels. After they have sucked blood, they leave the fish. Hemorrhages, wounds and ulcers appear in the affected areas. For free-swimming arguluses, behavioral adaptations are aimed at making the most of meetings with hosts and moving from one host to another. Our study presents data on crustaceans A. foliaceus from the perch from Lake Kenon (Amur River basin). The material was obtained from net catches in the first decade of June 2010. Individuals of the perch of the same size and age groups 2+–4+ were caught at the mouth of the Kadalinka River and in the warm water discharge zone of the Chita CHP-1. According to the results of our research, the relative abundance of argulus in the perch is significantly higher in the area of the mouth of the Kadalinka River than in the warm water discharge zone of the Chita CHP-1. In the springsummer period, the number of crustaceans increases during the spawning of adult fish and the feeding of juveniles in the area of the mouth of the Kadalinka River.
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Kojadinović, Nataša, Milena Radenković, Simona Đuretanović, Aleksandra Milošković, Marija Jakovljević, Tijana Veličković, and Vladica Simić. "LENGTH-WEIGHT RELATIONSHIP OF NINE FISH SPECIES FROM GRUŽA RESERVOIR (CENTRAL SERBIA)." In 1st International Symposium on Biotechnology. University of Kragujevac, Faculty of Agronomy, 2023. http://dx.doi.org/10.46793/sbt28.277k.

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Length–weight relationship give information on the condition and growth patterns of fish. This study reports length– weight relationships for Abramis brama (Linnaeus, 1758), Alburnus alburnus (Linnaeus, 1758), Carassius auratus (Linnaeus, 1758), Cyprinus carpio (Linnaeus, 1758), Rutilus rutilus (Linnaeus, 1758), Silurus glanis (Linnaeus, 1758), Ameiurus nebulosus (Le Sueur, 1819), Perca fluviatlis (Linnaeus, 1758) and Sander lucioperca (Linnaeus, 1758). Specimens were collected from 2007 to 2013 in Gruza Reservoir (Central Serbia). The b values in the LWRs of analyzyed fish varied between 2.274 and 3.213.
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Filipenko, Serghei, Natalia Zubcov, Lilia Tihonenkova, and Elena Filipenko. "Промысловая ихтиофауна Кучурганского водохранилища и роль отдельных видов в накоплении металлов в водоеме-охладителе Молдавской ГРЭС." In International symposium ”Functional ecology of animals” dedicated to the 70th anniversary from the birth of academician Ion Toderas. Institute of Zoology, Republic of Moldova, 2019. http://dx.doi.org/10.53937/9789975315975.74.

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In the Kuchurgan reservoir there are 40 species of fish, of which in the control fish catches of 2007-2017 were recorded 13 commercial species. The most numerous species is the silver crucian - 22% of all fish in the catches, the remaining species occupy from 4.3 to 0.02%, which indicates the imbalance of the commercial herd of fish and the need for measures to improve the ichthyological situation in the reservoir. The accumulation of metals (V, Mo, Pb, Ni, Cd, Zn, Cu) in the organs and tissues of 3 species of fish of the Kuchurgan reservoir (Carassius auratus gibelio, Hypophthalmichthys nobilis Perca fluviatilis) was studied. In the species of fish studied, metals are the least concentrated in the gonads and muscles of the trunk, while their maximum concentrations are mostly noted in the gills and skin, with the exception of copper, which accumulates more in the liver of fish.
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Смолина, Наталья Васильевна, and Ольга Андреевна Гарбузова. "STRUCTURE AND DYNAMICS OF CATCHES OF THE SHURYSHKARSKY DISTRICT OF THE YAMALO-NENETS AUTONOMOUS OKRUG." In Сборник избранных статей по материалам научных конференций ГНИИ «Нацразвитие» (Санкт-Петербург, Июль 2021). Crossref, 2021. http://dx.doi.org/10.37539/july318.2021.74.17.014.

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Анализ статистики уловов Шурышкарского района показал, что в 2015-2020 гг. промысловое значение имели 12 видов рыб, обеспечивая уловы от 8,6 до 10,1 тыс. тонн. Наибольший вклад в уловы по району вносили щука (47 %) и язь (27 %), доля сиговых в этот период снизилась с 22 до 11 %. Доля района в освоении биоресурсов ЯНАО возросла с 13 до 23 %, вклад в общие уловы щуки, леща, язя, окуня и карася в отдельные годы превышал 30 %. The analysis of catch statistics of the Shuryshkarsky district showed that in 2015-2020, 12 fish species were of commercial importance, providing catches from 8.6 to 10.1 thousand tons. The largest contribution to catches in the region was made by pike (47 %) and ide (27 %), the share of whitefish in this period decreased from 22 to 11 %. The share of the district in the development of biological resources of the Yamalo-Nenets Autonomous District increased from 13 to 23 %, the contribution to the total catches of pike, bream, ide, perch and crucian in some years exceeded 30 %.
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Krakers, L. A., N. P. Kruyt, and H. A. Rutjes. "Full-Scale Validation of a Comprehensive Criterion to Predict Fish-Friendliness of Pumps." In ASME/JSME/KSME 2015 Joint Fluids Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/ajkfluids2015-16450.

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Many pumping stations in drainage & irrigation applications are currently equipped with conventional (not fish friendly designed) pumps. Field tests have been performed [1] for several pump types of a certain size at certain pumping conditions to assess survival rates of fish passing through pumps. In order to compare different pump types of different sizes at different pumping conditions, a general criterion is required. Testing of fish friendliness of pumps is expensive and involves animal tests with living fish for which permits are required. Therefore, pump manufacturers prefer to perform fish friendliness tests for a single pump size. In order to convert such results to other pump sizes, a scaling law is desired. Van Esch [2, 3] made a first attempt to address scaling principles for fish friendliness of pumps. In the current study a general criterion is described to predict fish friendliness of pumps by means of models of mortality rates of fish passing through pumps. The criterion is validated with literature data [1–3] and experimental full-scale test data from the newly developed fish-friendly axial flow concrete volute pump by Flowserve with an impeller diameter of 850 mm. The full-scale tests involved a total of 1800 roach, perch and eel deployed over 7 pumping conditions, including 3 different heads and 5 different rotational speeds. The fish-friendliness criterion includes different aspects that together predict the survival rate of fish passing through pumps. The first and most important contributor is the impeller, which can have an axial, mixed or radial flow design. The criterion involves the leading edge shape of the blades. Secondly, the diffuser or volute is considered, which provides a strike probability with diffuser vanes or volute tongue(s). In case the gap between the trailing edge of the impeller vanes and the leading edge of the diffuser vanes or volute tongue(s) is small relative to the fish size, there is the possibility of a “scissor” effect. Research in the USA for fish friendliness of hydropower turbines [4–7] showed that shear velocity and pressure drops can be of importance. Also cavitation (involves pressure drop & vapor bubble implosions), recirculation and turbulence can influence survival rates. At this stage these flow effects are roughly captured using the pump performance curve. This way, extensive CFD calculations to evaluate detailed flow effects can be avoided. For open impellers, the gap between the impeller vanes and wear ring is included in the criterion. In addition, fish species-dependent effects are taken into account, since fish vary widely in their internal and external building plan. For instance salmonid, percid and cyprinid fish respond differently to the same pump design than for example eel. Sharp edges and rough surfaces (for example caused by cavitation, erosion or corrosion) can also be harmful to fish but are not included at this stage.
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Hossain, Muhammad Shazzad, and Youngho Kim. "Fish Anchor Testing in the Swan River." In Offshore Technology Conference Asia. OTC, 2022. http://dx.doi.org/10.4043/31423-ms.

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Abstract OTC-28901-MS proposed the novel dynamically installed "fish" anchor in 2018, adopting a geometry taken from nature, for potential economic and safer tethering of floating facilities in deep water. Every cross section of the fish anchor shaft is elliptical, leading to very low drag resistance during free fall through the water column, and also low resistance in penetrating the seabed sediments. The padeye is fitted on the widest part of the shaft to mobilise the maximum resistance area under operational loading. The fish anchor embedment depth during dynamic installation, and capacity under both monotonic and cyclic operational loading in calcareous silt were assessed through centrifuge model tests and large deformation finite element analyses. During dynamic installation, the normalised tip embedment depth of the fish anchor was typically three times that for the torpedo anchors and 50% greater than that for the OMNI-Max anchors. Under operational loading, the fish anchor dove deeper, reaching penetrations 20 to 60% greater than achieved during installation. By contrast the torpedo anchors (for all mooring mudline inclinations) and the OMNI-Max anchors (apart from a single test with mooring mudline inclination of 0°) pulled out directly without diving, reflecting insufficient free-fall penetration in calcareous soil. This paper provides a follow up reporting the performance of the fish anchor through field tests in the Swan River, Perth. A 1/15th scale model fish anchor was fabricated with dry weight being 0.304 kN. The anchor was tested at five different locations. At two shallow water locations (water depths 1.1 and 1.9 m, respectively), the tests were performed from the Burswood and Maylands jetty. At relatively deeper water depths of 2.91∼4.73 m, the tests were performed from a barge. The riverbed soils consisted of clay, silty clay, silt and sandy silt. The impact velocities were 5.9∼11.7 m/s. The normalised tip embedment depths were even greater compared to those achieved from centrifuge tests in calcareous silt. Under operational monotonic loadings, the fish anchor dove, as opposed to pull out of the riverbed, for mooring angles ≤ 37∼47°. Interestingly, in contrast to non-diving torpedo and suction caisson anchors, the diving fish anchor resulted non-elliptical failure envelopes, which have been expressed mathematically. The ultimate capacity was 3.5∼15 times the weight of the anchor submerged in water for taught and catenary moorings.
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Reports on the topic "Perch fishes"

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Geisthardt, Eric, Burton Suedel, and John Janssen. Monitoring the Milwaukee Harbor breakwater : an Engineering With Nature® (EWN®) demonstration project. Engineer Research and Development Center (U.S.), March 2021. http://dx.doi.org/10.21079/11681/40022.

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The US Army Corps of Engineers (USACE) maintains breakwaters in Milwaukee Harbor. USACE’s Engineering With Nature® (EWN®) breakwater demonstration project created rocky aquatic habitat with cobbles (10–20 cm) covering boulders (6–8 metric tons) along a 152 m section. A prolific population of Hemimysis anomala, an introduced Pontocaspian mysid and important food source for local pelagic fishes, was significantly (p < .05) more abundant on cobbles versus boulders. Food-habits data of alewife (Alosa pseudoharengus) and rainbow smelt (Osmerus mordax) provided evidence that H. anomala were a common prey item. Night surveys and gill netting confirmed O. mordax preferred foraging on the cobbles (p < .05) and consumed more H. anomala than at the reference site (p < .05). H. anomala comprised a significant portion of the diets of young-of-the-year (YOY) yellow perch (Perca flavescens), YOY largemouth bass (Micropterus salmoides), and juvenile rock bass (Ambloplites rupestris) caught on the breakwater. The natural features’ construction on the breakwater increased the available habitat for this benthopelagic macroinvertebrate and created a novel ecosystem benefiting forage fish and a nursery habitat benefiting nearshore game fish juveniles. These data will encourage the application of EWN concepts during structural repairs at other built navigation infrastructure.
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Vigg, Steven. The Nez Perce Tribe's Enhanced Conservation Enforcement for Fish, Wildlife, and Watersheds of the Nez Perce; Monitoring and Evaluation, 2001-2002 Annual Report. Office of Scientific and Technical Information (OSTI), July 2002. http://dx.doi.org/10.2172/961906.

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Vigg, Steven. The Nez Perce Tribe's Enhanced Conservation Enforcement for Fish, Wildlife, and Watersheds of the Nez Perce : Annual M&E Report for the FY2000 Performance Period - April 1, 2000 through March 31, 2001. Office of Scientific and Technical Information (OSTI), November 2001. http://dx.doi.org/10.2172/961878.

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