Effects of Electrofishing Fields on Captive Embryos and Larvae of Razorback Sucker

Muth, Robert T.; Ruppert, Jack B.

doi:10.1577/1548-8675(1997)017<0160:eoefoc>2.3.co;2

Cited by 22 publications

(44 citation statements)

References 24 publications

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“…Survival improved as development progressed beyond epiboly, which is consistent with results of investigations on embryos of rainbow trout Oncorhynchus mykiss (Godfrey 1957;Dwyer et al 1993), razorback suckers Xyrauchen texanus (Muth and Rupert 1997), and largemouth bass Micropterus salmoides, bluegills, and channel catfish Ictalurus punctatus . The developmental period most susceptible to electroshock included early epiboly in zebrafish FIGURE 3.-Survival to hatching of (a) spotfin chub embryos and (b) whitetail shiner embryos after DC and pulsed DC (PDC) electroshock.…”

Section: Discussionsupporting

confidence: 88%

“…and is consistent with other studies (Muth and Rupert 1997;. However, some previous investigations have reported high survival (similar to control survival) of embryos electroshocked at some developmental stages before epiboly (Dwyer et al 1993;Cho et al 2002).…”

supporting

confidence: 91%

“…Electroshock-induced mortality of fish embryos has been related to developmental stage at time of electroshock and the duration and characteristics of the electric field during exposure (Snyder 2003). Survival of electroshocked embryos can be improved by reducing electric field intensity (Godfrey 1957; and frequency of pulsed electric currents (Muth and Rupert 1997). Only one previous study has directly evaluated differences in susceptibility to electroshock-induced mortality of embryos between species , and comparisons among different studies are often difficult because of differences in experimental design.…”

mentioning

confidence: 99%

“…For all species considered, mortality was highest for embryos electroshocked early in development. The developmental period near epiboly, the period when the blastoderm overgrows the yolk (Warga and Kimmel 1990), has been identified as a particularly sensitive stage in embryonic development (Godfrey 1957;Dwyer et al 1993;Muth and Rupert 1997;. While survival of embryos improves as development progresses, electroshockinduced premature hatching has been reported for latestage embryos in a centrarchid (bluegill Lepomis macrochirus; Henry and Grizzle 2004) and in two salmonids (vendace Coregonus albula and powan Coregonus lavaretus; Luczynski and Kolman 1987).…”

mentioning

confidence: 99%

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Effects of Electroshock on Cyprinid Embryos: Implications for Threatened and Endangered Fishes

Bohl

Henry²,

Strange

et al. 2009

Trans Am Fish Soc

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The purpose of this study was to evaluate the effects of electroshock on survival to hatching in embryos of Cyprinidae, which includes numerous fish species designated as threatened or endangered under the U.S. Endangered Species Act. Embryos of three cyprinids were exposed for 20 s to a homogeneous electric field (DC or 60‐Hz pulsed DC [PDC], 3‐ms pulse width) at voltage gradients similar to those used during electrofishing. Exposure occurred only once and was at a specific stage of development. Zebrafish Danio rerio were electroshocked at numerous stages of embryonic development, and the most sensitive developmental stage was determined and used to guide subsequent experiments. Embryos of two minnows native to the southeast United States, the spotfin chub Erimonax monachus and whitetail shiner Cyprinella galactura, were exposed to a range of DC (3‐15 V/cm) and 60‐Hz PDC (8‐15 V/cm) voltage gradients, and survival to hatching was evaluated. Additionally, the potential for electrofishing to induce premature hatching in late‐stage cyprinid embryos was investigated by exposing eyed spotfin chub embryos to 8‐V/cm DC electroshock. Embryos were most vulnerable to electroshock‐induced mortality early in development, particularly near epiboly, and DC was more harmful than 60‐Hz PDC. At older developmental stages, embryos were less vulnerable to electroshock‐induced mortality, although premature hatching was induced in some older developmental stages of electroshocked spotfin chub embryos. Whitetail shiner embryos were more vulnerable (lethal voltage gradient predicted to induce 50% mortality [LV50], 5 V/cm) to electroshock‐induced mortality than were spotfin chub embryos (LV50, 6 V/cm). Results indicate that cyprinid embryos can be killed by DC electroshock at electric field intensities commonly generated by electrofishing equipment, and electrofishing near spawning grounds of threatened or endangered cyprinids should be avoided when embryos are present.

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Section: Discussionsupporting

confidence: 88%

supporting

confidence: 91%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Effects of Electroshock on Cyprinid Embryos: Implications for Threatened and Endangered Fishes

Bohl

Henry²,

Strange

et al. 2009

Trans Am Fish Soc

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“…Ainsi, les effets inhérents à une capture par pêche à la ligne ou à la cuiller (e.g., FERGUSON et TUFTS, 1992 ;YOUNGSON et WEBB, 1993 ;PANKHURST et DEDUAL, 1994 ;YOUNG et al, 1994 ;KIEFFER et al, 1995 ;BROBBEL et al, 1996 ;DEDUAL, 1996 ;LOWE et WELLS, 1996 ;WILKIE et al, 1996 ;POTTINGER, 1998), par plongeur sous-marin (e.g., BOLLARD et al, 1993), nasse (e.g., HOPKINS et CECH, 1992), senne (e.g., LEATHERLAND et al, 1989), chalut (e.g., TU RUN EN et ai., 1994OLLA et al, 1997), tramail (e.g., EGGINTON, 1994CHOPIN et al, 1996) ou pêche électrique (e.g., MESA et SCHRECK, 1989 ;MAULE et MESA, 1994 ;MITTON et MCDONALD, 1994 ;SNYDER, 1995 ;BARTON et GROSH, 1996 ;BARTON et DWYER, 1997 ;MUTH et RUPPERT, 1997) ont-ils été appréciés et quantifiés chez de nombreuses espèces pisciaires par des mesures d'indicateurs classiques de l'état de stress (i.e., catecholamines, Cortisol, glucose, lactate ;WEDEMEYER et al, 1990). L'utilisation de filets maillants, engins de pêche passifs, a été préconisée par l' EIFAC (1975) et citée par BARBIER (1985) pour certaines investigations dans les lacs, réservoirs et milieux potamiques.…”

Section: Introductionunclassified

Réponses Physiologiques De Sept Espèces De Poissons Lacustres À Un Stress De Capture (Filet Maillant Et Épuisette).

Bau

Ferroni-Claverie

Parent

2001

Bull. Fr. Pêche Piscic.

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Les perturbations physiologiques potentiellement liées à la capture des poissons par filet maillant ou par épuisette ont été estimées chez des brochets, sandres, perches, brèmes, chevesnes, carpes et tanches de la retenue hydroélectrique de Pareloup (Aveyron). Toute capture provoque rapidement une hausse significative des taux de catecholamines (>10 ng.ml -1 ), Cortisol (> 100 ng.ml -1 ) et glucose (> 1 g.h 1 ) et une baisse des taux d'hormones thyroïdiennes (< 20 ng.ml -1 ) du plasma chez les sept espèces. Ces réponses physiologiques au stress de capture apparaissent significativement plus marquées suite à la pêche par filet maillant et ce, notamment, chez les espèces carnassières. D'après ces résultats, l'utilisation de filets maillants s'avère inadéquate pour des recherches à court terme sur la physiologie sanguine de populations naturelles de poissons, soulignant ainsi la nécessité après ce type de pêche d'une mise en place d'infrastructures particulières (e.g., viviers, cages flottantes, etc.) pour la phase ultérieure de récupération physiologique.Mots-clés : poisson, retenue, physiologie, stress de capture. PHYSIOLOGICAL RESPONSES OF SEVEN LACUSTRINE FISH SPECIES TO CAPTURE STRESS (GILL NET AND LANDING NET). ABSTRACTThe potential physiological disturbances experienced by fish as a result of capture with gill nets or landing nets were assessed in pike, pikeperch, perch, bream, chub, carp and tench from the hydroelectric reservoir of Pareloup (Aveyron). Capture of fish quickly resulted in both a significant elevation of plasma catecholamine (> 10 ng.ml" 1 ), Cortisol (> 100 ng.ml -1 ) and glucose (> 1 g.l -1 ) levels and a drop in plasma thyroid hormone levels (< 20 ng.ml -1 ) in all species. These physiological stress responses were found to be highly increased following gill-netting, especially in carnivorous species. Hence, these data suggest that the use of gill nets is rather inadequate for short-term researches on blood physiology of ferai fish populations, then attesting to the necessity of settling up experimental facilities (e.g., fish-ponds, floating coops, etc.) following gill-netting to ensure a complete recovery of fish from capture stress.

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Pulse Trawling: The Impact of Pulsed Direct Current on Early Life Stages of Sole Solea solea

Desender

Dumolein

Duchateau

et al. 2018

N American J Fish Manag

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Despite electric pulse fishing being regarded as a promising environmentally friendly fishing method, very little is known about possible negative effects on early life stages of bottom‐dwelling species such as Sole Solea solea. Electrotrawling for brown shrimp Crangon crangon is increasingly used in shallow coastal zones and estuaries of the southern North Sea. As these fishing grounds are often important nurseries and spawning areas for various marine species, electrotrawling could therefore harm inhabiting fishes during their early life stages. Hence, this research aims to investigate the effect of electric pulses used to catch brown shrimp on the survival and development of Sole embryos and larvae. Exposure of Sole embryos at 2 d postfertilization and larvae at 11 d posthatching to pulsed DC used to catch brown shrimp did not result in a lower survival 8 d after exposure. Additionally, no differences in yolk sac resorption and morphometric length measurements of the notochord, muscle, eye, and head were observed in the developing larvae.

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Effects of Electrofishing Fields on Captive Embryos and Larvae of Razorback Sucker

Cited by 22 publications

References 24 publications

Effects of Electroshock on Cyprinid Embryos: Implications for Threatened and Endangered Fishes

Effects of Electroshock on Cyprinid Embryos: Implications for Threatened and Endangered Fishes

Réponses Physiologiques De Sept Espèces De Poissons Lacustres À Un Stress De Capture (Filet Maillant Et Épuisette).

Pulse Trawling: The Impact of Pulsed Direct Current on Early Life Stages of Sole Solea solea

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