Physiological response of one of South Africa’s premier freshwater sport angling species, the Orange-Vaal smallmouth yellowfishLabeobarbus aeneus, to catch-and-release angling

Abstract

(2016) Physiological response of one of South Africa's premier freshwater sport angling species, the Orange-Vaal smallmouth yellowfish Labeobarbus aeneus, to catch-and-release angling. African Zoology, 51 (1 Northumbria University has developed Northumbria Research Link (NRL) to enable users to access the University's research output. Copyright © and moral rights for items on NRL are retained by the individual author(s) and/or other copyright owners. Single copies of full items can be reproduced, displayed or performed, and given to third parties in any format or medium for personal research or study, educational, or not-for-profit purposes without prior permission or charge, provided the authors, title and full bibliographic details are given, as well as a hyperlink and/or URL to the original metadata page. The content must not be changed in any way. Full items must not be sold commercially in any format or medium without formal permission of the copyright holder. The full policy is available online: http://nrl.northumbria.ac.uk/policies.html This document may differ from the final, published version of the research and has been made available online in accordance with publisher policies. To read and/or cite from the published version of the research, please visit the publisher's website (a subscription may be required.)Citation: Smit, Nico, Gerber, Ruan, Greenfield, Richard and Howatson, Glyn (2016 Northumbria University has developed Northumbria Research Link (NRL) to enable users to access the University's research output. Copyright © and moral rights for items on NRL are retained by the individual author(s) and/or other copyright owners. Single copies of full items can be reproduced, displayed or performed, and given to third parties in any format or medium for personal research or study, educational, or not-for-profit purposes without prior permission or charge, provided the authors, title and full bibliographic details are given, as well as a hyperlink and/or URL to the original metadata page. The content must not be changed in any way. Full items must not be sold commercially in any format or medium without formal permission of the copyright holder. The full policy is available online: http://nrl.northumbria.ac.uk/policies.html This document may differ from the final, published version of the research and has been made available online in accordance with publisher policies. To read and/or cite from the published version of the research, please visit the publisher's website (a subscription may be required.) AbstractThe practice of catch and release fishing has been widely promoted by angling fraternities as a fisheries management tool. The aim of this investigation was to determine the physiological response of Orange-Vaal smallmouth yellowfish, Labeobarbus aeneus, to catch and release angling in the Vaal River, South Africa. Fish were collected using standard fly fishing techniques, anaesthetised in clove oil and blood drawn from the caudal vein; thereafter weighed, measured, revived and released. Bl...

An assessment of catches of shore sport fishing competitions along the coast of the Maltese Islands: Implications for conservation and management

“…Mortality rates also increased during the warmer period, especially when keep nets were not used, suggesting higher stress in the warmer summer months as observed in other studies (Bartholomew & Bohnsack, 2005;ICES, 2015). Although mortality rate is not very high, it could be improved if handling and fish air exposure are limited even more during the warmer periods (Bartholomew & Bohnsack, 2005;Cooke & Suski, 2005;Smit et al, 2016). Pottinger (1998) also found that keeping fish in keep nets did not result in a more pronounced stress response than capture followed by immediate release (Pottinger, 1998 (Alós, Palmer, Grau & Deudero, 2008).…”

“…During this study, it was not possible to collect data for post-release mortality. The same process was carried out sequentially for each angler and lasted a maximum of 30 s, to minimise air exposure and handling time, especially during the warmer summer months as these factors contribute to increased fish stress (Bartholomew & Bohnsack, 2005;Cooke & Suski, 2005;Smit, Gerber, Greenfield & Howatson, 2016).…”

Environmental regulatory awareness of freshwater recreational bank anglers in South Africa

“…Despite the fact that participants do not pursue recreational angling for personal economic gains, the sport is an important contributor to the South African economy, with an estimated 2.5 million persons participating in recreational angling in 2008 (Van Zyl, 2010), collectively spending approximately 18.8 billion ZAR annually (Leibold and Van Zyl, 2008). South Africa's unique fish diversity and exceptional range of fish habitats have contributed to the rich history and popularity of freshwater recreational angling and its subsequent economic importance for the country (Hickley and Tompkins, 1998;Smit et al, 2016). However, this combination of fish diversity and the popularity of recreational angling presents various management and regulatory challenges -in particular, designing and implementing an effective regulatory regime for freshwater recreational angling, which is the focus of this research.…”

Temporal movement of free-swimming fishes and their response to environmental variables in some of the rivers of Kruger National Park, South Africa

“…They both occur widely in tropical waters of Africa (Pienaar 1978;Skelton 2000). Furthermore, these species have economic value within the region's angling and fisheries industries (Brand et al 2009;Smit et al 2016;Gerber et al 2017). They have relatively different morphic measurements and habits; using different niches within the systems, they occur and occasionally competing for the same food source (Pienaar 1978;Skelton 2016).…”