Relative Performances of Four Preservatives on Fish and Crayfish

DiStefano, Robert J.; Roell, Michael J.; Wagner, Bruce A.; Decoske, Jamey J.

doi:10.1577/1548-8659(1994)123<0817:rpofpo>2.3.co;2

Cited by 23 publications

(17 citation statements)

References 16 publications

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“…When preserved in formaldehyde, individuals can be fixed in different contraction levels and total length measurements become impossible without strong bias. Therefore, for B. fasciata, we measured labrum width [we chose this measurement because it is completely sclerotized and thus less deformed during preservation than non-sclerotized body parts (Distefano, Roell, Wagner, & Decoske, 1994)] and we assumed that total length was proportional to labrum width.…”

Section: Methodsmentioning

confidence: 99%

Hydraulic habitat use with respect to body size of aquatic insect larvae: Case of six species from a French Mediterranean type stream

2008

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Macroinvertebrates play a key role in lotic ecosystems, as fish prey and processors of organic material. Therefore, their hydraulic preferences have to be integrated in instream habitat models for ecological stream management. This study characterized physical habitat use in terms of shear velocity for the larvae of three Ephemeropteran (Ephoron virgo, Oligoneuriella rhenana, and Serratella ignita), two Trichopteran (Cheumatopsyche lepida and Hydropsyche exocellata) and one Dipteran species (Blepharicera fasciata) in a Mediterranean stream at a relatively low water discharge. O. rhenana, C. lepida, H. exocellata, and B. fasciata larvae were mainly found in high shear velocity conditions, whereas E. virgo and S. ignita larvae were found in low shear velocity conditions. Knowing that habitat preferences should vary during ontogenesis (with respect to changes in biological requirements and/or morphological abilities to withstand high flow, for example), our second objective was to characterize differences in the hydraulic habitat use (in terms of shear velocity) for different size classes of these six species.Larvae of H. exocellata and B. fasciata mainly colonized high shear velocity conditions and numerous individuals of these species also used medium shear velocity conditions, independent of size class.The use of high shear velocity conditions increased with larval size for C. lepida and O. rhenana, whilst the use of low shear velocity conditions increased for larger larvae of E. virgo and S. ignita. Various hypotheses are proposed to explain these different strategies of habitat use during ontogenesis. We point out the lack of knowledge about physical habitat shifts during the larval growth of freshwater invertebrates.These results highlight the interest to consider the respective habitat requirements of different size classes of invertebrates in instream habitat models. Population bottlenecks should be overcome if hydraulic conditions are kept suitable for all size classes by stream managers.

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Section: Methodsmentioning

confidence: 99%

Hydraulic habitat use with respect to body size of aquatic insect larvae: Case of six species from a French Mediterranean type stream

2008

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“…The samples were preserved immediately in 70% ethanol (Merck, Germany) upon collection, followed by long-term storage in 95% ethanol as described by Lai et al (2010), Wong (2013) and Wong et al (2015). Fixation and preservation in ethanol was carried out to prevent degradation of DNA by enzymes upon death of the specimens as the latter would subsequently be used for DNA analyses (Black & Dodson 2003;Bucklin 2009;Díaz-Viloria et al 2005;DiStefano et al 1994;Wong 2013). The species and sexes of Acetes spp.…”

Section: Materials and Methods Sample Collection And Identificationmentioning

confidence: 99%

Intra- and Inter-specific Variation of Four Acetes Species (Crustacea: Decapoda: Sergestidae) Sampled along the West Coast of Peninsular Malaysia

Wong¹,

Singh²,

Ong³

2017

JSM

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“…The range of specimens examined (TL in cm; W in g) and the results of tests for a length effect on the percentage change are also shown when known. Author codes are: (1) Ajah and Nunoo (2003), (2) Al-Hassan et al (2000), (3) Buchheister and Wilson (2005), (4) DiStefano et al (1994), (5) Engel (1974) and (6) Treasurer (1990 …”

Section: Methodsmentioning

confidence: 99%

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

Ogle

2009

Fisheries Research

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Relative Performances of Four Preservatives on Fish and Crayfish

Cited by 23 publications

References 16 publications

Hydraulic habitat use with respect to body size of aquatic insect larvae: Case of six species from a French Mediterranean type stream

Hydraulic habitat use with respect to body size of aquatic insect larvae: Case of six species from a French Mediterranean type stream

Intra- and Inter-specific Variation of Four Acetes Species (Crustacea: Decapoda: Sergestidae) Sampled along the West Coast of Peninsular Malaysia

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

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