The effect of freezing on the length and weight measurements of ruffe (Gymnocephalus cernuus)

Ogle, Derek H.

doi:10.1016/j.fishres.2009.06.009

Cited by 15 publications

(16 citation statements)

References 16 publications

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“…Thus, fry were defrosted and the total length (L T ) was recorded to the nearest 0.5 mm and weighed (W) to the nearest 0.1 mg, despite the fact that freezing induces a loss in length and weight of fishes (Ogle, 2009). Before dissection, fry were stored in formaldehyde to completely extract yolk under a binocular microscope (Nikon Eclipse 80i).…”

Section: Methodsmentioning

confidence: 99%

First feeding diet of young brown trout fry in a temperate area: disentangling constraints and food selection

Sánchez‐Hernández

Vieira‐Lanero²,

Servia

et al. 2011

Hydrobiologia

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Diet composition of newly emerged brown trout fry in natural areas remains poorly known, and foraging abilities at this early stage, although presumably reduced, are still under discussion. We have studied gut content composition of brown trout fry in a temperate area (Galicia, NW Spain) and compared it to the benthic macroinvertebrate community. Small prey such as chironomid larvae and baetid nymphs were the most important food items for newborns, some of them still presenting yolk remnants. However, the positive selection observed for Polycentropodidae and Simuliidae and the rejection of Elmidae and Leuctricidae suggest that other factors apart from size, such as locomotor abilities of fish or accessibility and antipredator behaviour of prey play an important role in feeding behaviour. Additionally, analysis of diet changes on the studied fry suggests a dramatic shift in niche breadth at the moment of complete yolk absorption, which might be related to the improvement of swimming and handling ability of fry for capturing and ingesting prey. The presence of aerial imagoes only in the stomachs of fry with no yolk provides further support to this hypothesis. Planning of restoration works on spawning grounds should then allow enough time for complete recolonization by benthic macroinvertebrates, including first instars, as searching for food in newborns is limited to the nest area due to mobility constraints.

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Section: Methodsmentioning

confidence: 99%

First feeding diet of young brown trout fry in a temperate area: disentangling constraints and food selection

Sánchez‐Hernández

Vieira‐Lanero²,

Servia

et al. 2011

Hydrobiologia

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“…Previous studies indicate that not all species react in the same way when subjected to a fixation technique (Ogle 2009. Some authors have proposed inter-specific differences in the proportion of organic molecules, such as lipids and proteins in tissues, as a possible explanation for this effect (Sagnes 1997, AlHassan et al 2000).…”

Section: Discussionmentioning

confidence: 99%

“…• Loss of water in tissues from freezing and thawing and exposure to ethanol (Ogle 2009) or • Dissolution of skeletal structures caused by formaldehyde (Gagliano et al 2006). …”

Section: Discussionmentioning

confidence: 99%

“…Morphological variations associated with preservation of juvenile or adult fishes have rarely been reported. Changes have mainly been based on length or proportion measurements (Leslie and Moore 1986, Sagnes 1997, Smith and Walker 2003, Paradis et al 2007, Florin and Lingman 2008, Wessels et al 2010, Lee et al 2012, or length-weight relations (Al-Hassan et al 2000, Ogle 2009, Beamish et al 2011). To our knowledge, few studies explore the effect of preservation by taking advantage of the benefits of geometric morphometrics (BerbelFilho et al 2013, Gaston et al 2013.…”

mentioning

confidence: 99%

“…Previous studies of preserved fishes mainly focused on the analysis of some of the stages of the preservation process (Sagnes 1997, Ogle 2009, Wessels et al 2010 or else they compared the steps of the process in an independent way (Al-Hassan et al 2000). A more effective approach for evaluating extreme changes in fishes should be implemented, using the combined application of the techniques for preservation of fishes stored in ichthyological collections.…”

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confidence: 99%

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Effect of preservation procedures on the body shape of the golden mojarra, Diapterus aureolus (Actinopterygii: Perciformes: Gerreidae), and its repercussions in a taxonomic study

Vergara‐Solana¹,

Rodríguez²,

Cruz‐Agüero³

2014

Acta Ichthyol. Piscat

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Size and Age of Stonecats in Lake Champlain; Estimating Growth at the Margin of their Range to Aid in Population Management

Puchala

Parrish

Ogle

2018

N American J Fish Manag

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Little is known about populations of Stonecat Noturus flavus, especially in the northeastern United States, where they are at the edge of their range. In Lake Champlain tributaries, Stonecats are listed as endangered in Vermont but not in New York. Here we describe the growth of Stonecats in two tributaries to Lake Champlain, one in Vermont (LaPlatte River), which was our primary interest, and one in New York (Great Chazy River), with von Bertalanffy growth models fit to lengths at the times of marking and recapture and to observed length and age data. We also compared growth of Stonecats in these waters to results from other locations near the middle of their distribution. Stonecats in the Great Chazy River were larger at ages 1-3, but similar in size for ages 4 and 5, than Stonecats from the LaPlatte River. Stonecats in Lake Champlain tributaries were generally larger at age than those from the middle of their range, except for those from Lake Erie. From our mean length-at-age results and previous literature estimates of length at maturity for Stonecats, it appears that Stonecats in Lake Champlain reach maturity by age 3, though future research that directly estimates age at maturity would be more informative. These results will help managers assess the effect of various environmental and human stressors that Stonecats have experienced in the Lake Champlain basin in recent years. Furthermore, our results expand the literature, which lacks information about growth of this species. Finally, our mark-recapture approach to estimating growth of Stonecats can be applied to other species, especially where data are limited because of their status, and in other systems.

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The effect of freezing on the length and weight measurements of ruffe (Gymnocephalus cernuus)

Cited by 15 publications

References 16 publications

First feeding diet of young brown trout fry in a temperate area: disentangling constraints and food selection

First feeding diet of young brown trout fry in a temperate area: disentangling constraints and food selection

Effect of preservation procedures on the body shape of the golden mojarra, Diapterus aureolus (Actinopterygii: Perciformes: Gerreidae), and its repercussions in a taxonomic study

Size and Age of Stonecats in Lake Champlain; Estimating Growth at the Margin of their Range to Aid in Population Management

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