Analysis of Fish Swimming Performance Data PDF Download
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Author: Larry A. Hunter
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: Larry A. Hunter
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author:
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ISBN:
Category :
Languages : en
Pages : 0
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This document provides advice on the completeness of the database, the scientific validity and limitations of the analyses and the results and conclusions associated with the fish 2 Central and Arctic Region Swim Performance Curves swimming performance curves. [...] In an effort to improve the consistency of the data used in the analysis, certain datasets that held individual fish measurement data were reformatted by grouping the data in a manner that was similar to other grouped datasets collected from the literature. [...] The objective of dividing the database from one large group into smaller ones was to improve the R2 value and standard error of estimate for the swimming speed versus fatigue time regressions until the point was reached at which limitations of the dataset exceeded any additional gains. [...] Similarly, the "Trout Group" consisting of 65 of the 76 species had R2 values of 0.354 when swim speed was expressed in body lengths per second compared to 0.730 when swim speed was expressed as a function of the square root of body length or as the dimensionless speed (including gravity in square root of length). [...] In fluid mechanics, the Froude number is relevant where the weight of the fluid is an important force, and is used to determine the resistance of an object moving through water, and permits the comparison of objects of different sizes.
Author: J.J. Videler
Publisher: Springer Science & Business Media
ISBN: 940111580X
Category : Science
Languages : en
Pages : 274
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Book Description
Among the fishes, a remarkably wide range of biological adaptations to diverse habitats has evolved. As well as living in the conventional habitats of lakes, ponds, rivers, rock pools and the open sea, fish have solved the problems of life in deserts, in the deep sea, in the cold antarctic, and in warm waters of high alkalinity or of low oxygen. Along with these adaptations, we find the most impressive specializations of morphology, physiology and behaviour. For example we can marvel at the high-speed swimming of the marlins, sailfish and warm-blooded tunas, air-breathing in catfish and lung fish, parental care in the mouth-brooding cichlids and viviparity in many sharks and toothcarps. Moreover, fish are of considerable importance to the survival of the human species in the form of nutritious, delicious and diverse food. Rational exploitation and management of our global stocks of fishes must rely upon a detailed and precise insight of their biology. The Chapman & Hall Fish and Fisheries Series aims to present timely volumes reviewing important aspects of fish biology. Most volumes will be of interest to research workers in biology, zoology, ecology and physiology but an additional aim is for the books to be accessible to a wide spectrum of non-specialist readers ranging from undergraduates and postgraduates to those with an intrerest in industrial and commercial aspects of fish and fisheries.
Author: Paolo Domenici
Publisher: CRC Press
ISBN: 1439843120
Category : Science
Languages : en
Pages : 549
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Book Description
Fish accomplish most of their basic behaviors by swimming. Swimming is fundamental in a vast majority of fish species for avoiding predation, feeding, finding food, mating, migrating and finding optimal physical environments. Fish exhibit a wide variety of swimming patterns and behaviors. This treatise looks at fish swimming from the behavioral and
Author: John R. Aedo
Publisher:
ISBN:
Category : Electronic dissertations
Languages : en
Pages : 41
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Swimming performance strongly influences fitness in aquatic organisms and is closely tied to external body morphology. Although this connection has been closely examined at the individual and species level, few studies have focused on this relationship as it pertains to functional group assemblages. Using functional groups based on similarities in habitat use and morphology, I tested the hypothesis that swimming performance can be reliably predicted by functional group composition. I measured swimming performance as burst speed using a simulated predator attack and as prolonged speed using a step-endurance test in a laboratory flume. I measured morphology using geometric morphometric techniques. A difference in swimming behavior in four of the seven species was observed in the step-endurance test. Benthic species exhibited bracing behavior as an alternative to body-caudal fin (BCF) propulsion in the prolonged speed trials. Swimming performance exhibited a weak relationship with functional groups based on habitat or morphology. Rather a species-based model was the best predictor of swimming performance. Although species exhibited variation in swimming performance, body size was the strongest predictor of absolute swimming performance across all models. Relative swimming performance (measured in body lengths/sec) was negatively related to body size. The results of this study suggest that functional groups are not always reliable predictors of performance and they necessitate empirical testing to validate their effectiveness. This study also provides critical swimming performance data for previously unstudied Great Basin fishes which could be valuable for predicting fish passage through culverts, weirs and fish ladders.
Author: Javier Lobón-Cerviá
Publisher: John Wiley & Sons
ISBN: 1119268311
Category : Technology & Engineering
Languages : en
Pages : 821
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Book Description
Brown Trout: Biology, Ecology and Management A comprehensive guide to the most current research, history, genetics and ecology of the brown trout including challenging environmental problems The brown trout is an iconic species across its natural European distribution and has been introduced throughout the World. Brown Trout offers a comprehensive review of the scientific information and current research on this major fish species. While the brown trout is the most sought species by anglers, its introduction to various waters around the world is causing serious environmental problems. At the same time, introduction of exogenous brown trout lineages threats conservation of native gene pools of populations in many regions. The authors summarize the important aspects of the brown trout’s life history and ecology and focus on the impact caused by the species. The text explores potential management strategies in order to maintain numerous damaged populations within its natural distributional range and to ameliorate its impacts in exotic environments. The authors include information on a wide-range of topics such as recent updates in population genetics, evolutionary history, reproductive traits and early ontogeny, life history plasticity in anadromous brown trout and life history of the adfluvial brown trout and much more. This vital resource: Contains the latest research on the biology and ecology of brown trout Includes information on phylogeography, genetics, population dynamics and stock management Spotlights the brown trout’s introduction to regions around the world and the serious environmental impacts Offers a comprehensive review of conservation and management techniques Written for salmonid scientists and researchers, fishery and environmental managers, and students of population genetics, ecology and population dynamics, Brown Trout explores the most recent findings on the history, ecology and sustainability of this much-researched species.
Author:
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Category :
Languages : en
Pages : 0
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The purpose of the meeting was to review a working paper that presented the results of analyses on fish swimming performance curves to determine; (1) if the database used for the analyses was complete; (2) the scientific validity of the analyses, results, and conclusions reached; and (3) the limitations of the study. [...] It was noted that in addition to the objectives outlined in the meeting Terms of Reference, participants would also endeavour to identify and evaluate the sources of uncertainty and the assumptions used in the analysis. [...] During their analyses, the authors tried various dimensionless parameters and presented the combination that best reduced the scatter in the graphical representation of the data as the model was refined. [...] Further investigation of the eel group led the authors to compare the swim speed-time regressions between the eel group and a subset of it, the Anguilliform group, using dimensionless analysis. [...] They also recommended the authors re-order (or re-label) the appendices in the Research Document so they appear in the order in which they are referred to in the text.
Author: Joseph J. Cech
Publisher:
ISBN:
Category : Bioenergetics
Languages : en
Pages : 80
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Author:
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Category :
Languages : en
Pages : 0
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The swim tunnel is analogous to the treadmill for running where fish hold position and swim at the same speed of water flowing through the tunnel, just as a runner on a treadmill holds position by running at the speed of the treadmill. [...] In Peake 2008, passage success was reported as a function of attempts by dividing the number of fish that are able to successfully swim the entire channel length by the number of the fish that entered the channel from the staging area (e.g. [...] The rotational velocity of the wheel is proportional to the average swimming speed of the fish. [...] The response time of the operator to the movements of the fish can be a serious source of error. [...] Electric shocks of different strengths were used to generate high burst speeds in the fish, the speed and duration of the burst was captured by an oscilloscope that recorded the response of an operator who rotated the wheel in the opposite direction of the burst.
Author: Dominique Roche
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 578
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Locomotion is essential for all aspects of a fish's ecology and directly influences individual fitness by facilitating reproduction, food acquisition and predator avoidance. The effect of environmental factors on swimming fundamentally shapes the distribution of species. The first five chapters of this thesis examine how biotic and abiotic stressors influence fish swimming performance and behaviour. Because data (not just fish!) are essential for answering these questions, the last chapter discusses public data archiving, and proposes improvements to this practice. Chapter 1 investigates the prevalence of a large ectoparasite, Anilocra nemipteri, and how it affects its fish host, Scolopsis bilineata, on the Great Barrier Reef. I show that A. nemipteri is common and appears to affect the population size structure of S. bilineata. I suggest that this system is ideal to answer questions about host-parasite interactions and co-evolution (Roche et al. 2013, Aust J Zool). In Chapter 2, I test whether A. nemipteri, which attaches asymmetrically on S. bilineata, affects lateralization (the preferential use of one side of the body for behavioural tasks). I show that parasitised fish are more lateralized than non-parasitized fish, and that removing the parasite from infected fish decreases the strength of lateralization to the level of uninfected fish. These results suggest that side-biased behaviours are more plastic than previously thought (Roche et al. 2013, Behav Ecol Sociobiol). Chapter 3 focuses on the host, S. bilineata, and compares two common respirometry methods for estimating metabolic rates in fishes. I argue that a single approach might not produce the most accurate parameter estimates for all fishes, and that researchers should carefully consider which apparatus and method are most appropriate for their species and question of interest (Roche et al. 2013, J Exp Biol). Chapter 4 examines how cyclic changes in water flow velocity influence the swimming performance and energetics of a pectoral-fin (labriform) swimming fish. The results suggest that the costs of swimming in wave-like, unsteady flow are context dependent, and are influenced by individual differences in the ability of fishes to adjust their fin beats to the flow environment (Roche et al. in press, J Exp Biol). Chapter 5 explores the effect of unsteady, wave-driven water motion on fast-start escape responses, a key behaviour fishes use to evade predators. I found that water motion had a very strong negative effect on juvenile fishes' response time to a threatening stimulus, with deeper-bodied species being less affected. Since response latency is a key determinant of escape success, I argue that postural disturbances from unsteady water motion might reduce the ability of some coral reef fishes to evade predation (Roche submitted, Funct Ecol). Despite benefits for the wider society, many scientists are reluctant to share their data publicly. In Chapter 6, I explain why. I then offer practical solutions to increase the net benefits for individual researchers and to encourage public data archiving (Roche et al. in press, PLoS Biology). I also argue against charging fees for researchers to archive their data in public repositories (Roche et al. 2013, Nature).
