Overwinter Survival of Fingerling Brook Trout with Single and Multile Fin Clips

Mears, Harold C.; Hatch, Richard W.

doi:10.1577/1548-8659(1976)105<669:osofbt>2.0.co;2

Cited by 33 publications

(25 citation statements)

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“…Mortality in salmonids associated with ventral fin clips is variable but is generally higher than in adipose-clipped and unmarked salmonids of the same stock (Jacobs 1990;PSC 1995;PSC 1997). For example, the catch of ventral-clipped rainbow trout was only 81% of that of adipose-clipped trout in an alpine lake (Nicola and Cordone 1973), 43% of that of brook trout in reclaimed ponds (Mears and Hatch 1976), and 55-61% of that of coho salmon in Bear Lake, Alaska (Vincent-Lang 1993). Compared with reported values, the differences in return rates we found between adipose-and ventral-clipped trout in this study are considerably higher.…”

Section: Discussioncontrasting

confidence: 82%

Performance of Diploid and Triploid Rainbow Trout Stocked in Idaho Alpine Lakes

Koenig

Kozfkay

Meyer

et al. 2011

N American J Fish Manag

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Increased growth, improved survival, and genetic protection of wild stocks have been suggested as benefits of stocking triploid (i.e., sterile) salmonids for recreational fisheries. We examined the return rates and growth of mixed‐sex diploid (2N), mixed‐sex triploid (3N), and all‐female triploid (AF3N) rainbow trout Oncorhynchus mykiss across 28 alpine lakes. Equal numbers of each treatment group were stocked in 2001 and 2003 and sampled 3–4 years later. During 2004 and 2005, a total of 75 2N and 36 3N marked rainbow trout were recaptured. Taken together, the 2N fish accounted for an average of 0.68 of the total marked fish caught, and the combined proportions of test fish (including netting and angling) differed significantly between the test groups and were consistent across survey years. During 2006 and 2007, a total of 60 2N, 31 3N, and 208 AF3N marked rainbow trout were recaptured. The mean length of the test fish was similar between test groups within sampling years. Overall, the return of 3N rainbow trout to alpine lakes in Idaho was low compared with that of 2N trout, whereas AF3N trout appeared to return in higher proportions than both of the other groups. The triploid stocks studied in this evaluation did not show any growth advantages over the duration of the study. Study design limitations may have contributed in part to some of the differences in the number of 2N and 3N rainbow trout captured. However, our results suggest that fisheries managers should consider all‐female triploid rainbow trout as a low‐risk option for maintaining alpine lake fisheries while minimizing the impact on native stocks.Received January 27, 2010; accepted November 16, 2010

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Section: Discussioncontrasting

confidence: 82%

Performance of Diploid and Triploid Rainbow Trout Stocked in Idaho Alpine Lakes

Koenig

Kozfkay

Meyer

et al. 2011

N American J Fish Manag

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“…L. BAGLINIERE ET A L . groups was underestimated, because (a) in spite of the efficiency of electrofishing in autumn 1983 @Soh), some 0 + trout present in zones A and B were not caught and marked; (b) the 0 + fish caught in zone C were not fin-clipped while the fin-clipping made on the fish of zones A and B could have decreased their survival rate (Nicola & Cordone, 1973;Mears & Hatch, 1976); (c) a loss of tags (estimated at up to 10% from data of double marking) and possible errors of mark reading (regeneration of fins). However, these considerations are not sufficient to explain the behavioural differences according to the geographical origin.…”

Section: Recruitment Of Two Juvenile Populationsmentioning

confidence: 99%

Population dynamics of brown trout, Salmo trutta L., in a tributary in Brittany (France): spawning and juveniles

Baglinière

Maisse

Lebail

et al. 1989

Journal of Fish Biology

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The colonization by both resident and migrating spawner populations of brown trout and the characteristics of resident and migrating juveniles derived from the two populations have been studied in a brook and its tributary over 4 years. Resident trout spawns mainly in the upstream part of the brook and migrating trout in the downstream part. There are density and growth variations for the two age classes (0+ and 1 +) ofjuveniles in autumn according to the year and the environment. In the brook, the population of0 + fish increases from downstream to upstream while the density of other age classes decreases. The migrating juvenile population of the brook changes annually and consists mainly of 1s (one summer) individualscorning from the upper part. These individuals migrate generally in autumn and winter while young trout produced in the middle and downstream parts of the brook migrate mainly in the spring. The emigration process of the O + population decreases markedly from upstream to downstream and appears to be independent of the autumn length and sex ratio. In the tributary, most trout are O+ years old, the population structure is different, and no migrating fish is observed. The results are discussed and a colonization strategy of the brown trout population in this brook is suggested.

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“…Plusieurs auteurs (SAUNDERS et ALLEN, 1967;WEBER et WHALE, 1969;NICOLA et CORDONE, 1973) ont observé que l'ablation de l'adipeuse pouvait diminuer la survie de certains salmonidés de 30 à 60 % en milieu naturel. Cependant dans des conditions apparentes, d'autres auteurs (BRYNILDSON et BRYNILDSON, 1967;STOLTE, 1973;MEARS et HATCH, 1976;VINCENT-LANG, 1993) ne relèvent aucune différence de survie entre les individus marqués par ablation de l'adipeuse et les individus non marqués. En définitive, si l'ablation de l'adipeuse est admise comme relativement peu traumatisante (CRISTAU-QUOST, 1980;CHAMPIGNEULLE et ESCOMEL, 1984), ses conséquences réelles restent à vérifier dans la mesure où il est difficile de penser que cet organe n'a pas de valeur adaptative vu sa permanence au sein de certaines familles de poissons comme les salmonidés.…”

Section: Discussionunclassified

PREMIÈRE ÉVALUATION DES TECHNIQUES DE MARQUAGE D’ALEVINS D’OMBRE COMMUN (Thymallus thymallus L.) PAR CAUTÉRISATION DE LA NAGEOIRE ADIPEUSE OU PAR INJECTIONDE MICROMARQUES MAGNÉTIQUES

Mallet

Persat

Fiévet

2003

Bull. Fr. Pêche Piscic.

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RÉSUMÉIl est souvent nécessaire de marquer les poissons pour contrôler l'efficacité des opérations d'alevinage ou étudier la dynamique des populations en milieu naturel. L'article décrit des adaptations de deux techniques de marquage d'alevins d'Ombre commun (Thymallus thymallus L.) de 6-8 cm : (1) l'ablation par cautérisation de la nageoire adipeuse et (2) l'injection de micromarques magnétiques dans le cartilage nasal. Afin de mettre en évidence les effets à long terme de ces deux techniques de marquage, la survie et la croissance d'alevins marqués ont été comparées à celles d'alevins témoins non marqués élevés en bassins artificiels. Les taux observés de rétention ou de persistance des marques étaient très élevés (> 99 %). Les taux de survie et de croissance des alevins marqués, élevés séparément ou non, n'étaient pas significativement inférieurs à ceux des alevins témoins. Les deux méthodes sont donc bien adaptées au marquage de groupes de juvéniles d'Ombre commun.Mots-clés : micromarques magnétiques, cautérisation de la nageoire adipeuse, survie, croissance, ombre commun. FIRST EVALUATION OF TAGGING TECHNIQUES ON YOUNG EUROPEAN GRAYLING (Thymallus thymallus L.) BY CAUTERISATION OF THE ADIPOSE FIN OR BY INJECTION OF CODED WIRE TAGS ABSTRACTIt is often necessary to tag fish in order to control the efficiency of stocking or to investigate population dynamics in the wild. The paper deals with adaptations of two methods of tagging young European grayling (Thymallus thymallus L.) of 6-8 cm long: Bull. Fr. Pêche Piscic. (2003) (1) ablation by cauterisation of the adipose fin and (2) injection of coded wire tags into the nasal cartilage. In order to investigate the long-term effects of each tagging techniques, survival and growth of young tagged fish were compared to those of untagged fish. Rearing took place in artificial tanks and ponds. Observed rates of tag retention or tag persistence were very high (> 99%). Both survival and growth rates of tagged and untagged groups of fish, reared apart or not, did not differ significantly. Consequently, both methods appear to be suitable for tagging groups of young grayling.

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Overwinter Survival of Fingerling Brook Trout with Single and Multile Fin Clips

Cited by 33 publications

References 0 publications

Performance of Diploid and Triploid Rainbow Trout Stocked in Idaho Alpine Lakes

Performance of Diploid and Triploid Rainbow Trout Stocked in Idaho Alpine Lakes

Population dynamics of brown trout, Salmo trutta L., in a tributary in Brittany (France): spawning and juveniles

PREMIÈRE ÉVALUATION DES TECHNIQUES DE MARQUAGE D’ALEVINS D’OMBRE COMMUN (Thymallus thymallus L.) PAR CAUTÉRISATION DE LA NAGEOIRE ADIPEUSE OU PAR INJECTIONDE MICROMARQUES MAGNÉTIQUES

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