Aspects of the biology of <i>Mysis mixta</i> (Lilljeborg 1852) (Crustacea, Mysidacea) in New Hampshire coastal waters

Grabe, Stephen A.; Hatch, Elizabeth

doi:10.1139/z82-171

Cited by 15 publications

(10 citation statements)

References 8 publications

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“…Though the mysid brood size can be highly variable (Grabe and Hatch, 1982), a significant correlation with the body length of females is common for many mysid species (Morgan, 1980;Toda et al, 1982;Petryashov, 1992;Ketelaars et al, 1999). A significant correlation between body length and body mass is also a common feature for many mysid species (Borodich and Havlena, 1973;Szalontai et al, 2003;Borcherding et al, 2006) and might be a useful tool for biomass estimation from field data.…”

Section: Field Samplingmentioning

confidence: 99%

Autecology of Limnomysis benedeni Czerniavsky, 1882 (Crustacea: Mysida) in Lake Constance, Southwestern Germany

Gergs¹,

Hanselmann²,

Eisele³

et al. 2008

Limnologica

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The Ponto-Caspian mysid Limnomysis benedeni was first recorded in Lake Constance in summer 2006, and a stable population developed at the site of discovery. Although this mysid is common in the Rhine and Danube rivers, little is known about its ecology and impact in systems of invasion. We investigated the autecology of L. benedeni in habitatchoice and food experiments. In the habitat-choice experiments, highly structured habitats, i.e., stones covered with zebra mussels (Dreissena polymorpha), macrophytes, and especially stonewort, were strongly preferred. In food experiments, L. benedeni fed mostly on food sources with a small particle size, e.g., biofilm on leaf litter, biodeposited material of zebra mussels, epilithon, and phytoplankton. We also compared the L. benedeni population data from Lake Constance with that from rivers. In Lake Constance, female L. benedeni were nearly 30% larger and carried more than three times more eggs in spring (9.470.6 mm and 28.475.7 eggs) than in summer (6.770.8 mm and 8.772.9 eggs). The mysids present in spring might be the generation that over-wintered; in summer, this generation was probably replaced by a new generation of smaller individuals. The large brood size and the detritivorous feeding strategy might allow L. benedeni to colonize Lake Constance rapidly.

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Section: Field Samplingmentioning

confidence: 99%

Autecology of Limnomysis benedeni Czerniavsky, 1882 (Crustacea: Mysida) in Lake Constance, Southwestern Germany

Gergs¹,

Hanselmann²,

Eisele³

et al. 2008

Limnologica

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“…The coefficient of skewness is greater than zero in the case of length distribution for another crustacean My sis mixta, which was investigated in the shore waters of New Hampshire by Grabe & Hatch (1982) (figure 19). Diaz (1980) presented frequency distributions of body weights of the crab Emertia talpoida.…”

Section: Length/cmmentioning

confidence: 99%

“…Diaz (1980) presented frequency distributions of body weights of the crab Emertia talpoida. Though the population consisted of individuals differing by age, the successive generations were represented in these distributions by single peaks, therefore it was possible to assess that frequency distributions of weights in even-aged groups had a skewness coefficient greater than (Redrawn from Grabe & Hatch (1982).) Parry (1982) investigated a few species of molluscs in the coastal waters of Australia.…”

Section: Length/cmmentioning

confidence: 99%

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Differentiation and frequency distributions of body weights in plants and animals

Uchmański

1985

Phil. Trans. R. Soc. Lond. B

107

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The basic and simplest system that one can consider in ecology is a group of individuals of equal age and representing one species, that is, a cohort. This paper is an attempt to show that analysis of such a system may be of great importance to understanding basic ecological problems, such as, intraspecific competition and the dynamics of a single population. It is easy to observe that in even-aged populations individuals differ in weights. A close look can show that weight distributions in even-aged populations may have different skewness. Most common are distributions with coefficients of skewness greater than zero. Sometimes weight distributions are symmetrical or with skewness coefficients less than zero. In a cohort of growing individuals the coefficient of skewness changes with time: most often starting from zero (symmetrical distribution), it increases in time; sometimes after an initial increase it can decrease in the final stage of growth, which is related to an increased mortality of individuals. The rate of change in skewness, and the skewness itself depend on the density of individuals in a cohort and on food conditions. They are greater at higher densities and increase with deteriorating food conditions. Weight distributions are symmetrical at low densities and optimal food conditions. The differences in individual weights measured by variance of weight distributions or coefficient of variation follow the same pattern, but observed changes with time, density and food conditions are not so clear. These conclusions rest upon the review of numerous papers concerning both plants and animals, which is presented in this paper. In the past, the properties of weight distributions in even-aged populations were explained not by interactions between individuals, but rather as a natural outcome of the growth process of non-interacting individuals. The exponential equation of growth, with relative growth rate having a normal distribution in populations, was used to support this hypothesis. Obtained weight distributions were of positive skewness; however, this model, which in fact is able to describe the growth process only in its initial stage, cannot explain the changes of skewness of weight distributions with density and food conditions. A model has been developed which includes competitive interactions among members of even-aged populations to explain observed properties of weight distributions in them. The basic assumption is that intraspecific competition leads to uneven partitioning of resources, which are the object of competition. Functions describing resource partitioning among individuals are included into the model.(ABSTRACT TRUNCATED AT 400 WORDS)

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“…Differences in vertical migration between developmental stages have been noted (e.g. GRABE & HATCH 1982), and there are numerous reports on sex-specific differences in diel activity (references in MAUCH LINE 1980). Seasonal changes in migratory patterns have been reported by BRUNEL (1979).…”

Section: Introductionmentioning

confidence: 99%

Diel changes in small-scale vertical distribution of hyperbenthic mysids

Kaartvedt¹

1985

Sarsia

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SARSIA KAARTVEDT, STEIN 1985 12 30. Diel changes in small-scale vertical distribution of hyperbenthic mysids. -Sarsia 70: 287-295 Bergen. ISSN 0036-4827.Erythrops serrata (G.O. SARS), Boreomysis megalops G.O. SARS, Leptomysis gracilis (G.O. SARS) and Lophogaster typicus M. SARS were studied at 150 m depth in Fanafjorden, western Norway in April, June, September, and December 1979. Sampling was performed with hyperbenthic sledges in intervals of 0-80 cm and 30-80 cm above the sediment. During daylight all species were concentrated in immediate vicinity of the sediment. During darkness E. serrata performed increased swimming activity near the bottom. A part of the population of B. megalops always undertook vertical migration at night. Distribution of the remaining hyperbenthic part was less stratified than during daylight. A substantial portion of vertically migrating individuals returned to depth before sunrise. Almost the entire population of L. gracilis and L. typicus left the hyperbenthic region prior to sunset, and returned after sunrise. Approaching sunset distributional changes first occurred for L. typicus (1-2 hours prior to sunset), followed by L. gracilis and later by B. megalops and E. serrata. At twilight conditions, occasionally a transition state between daylight-and night-distribution was found, most prominent in L. typicus in the afternoon.

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Aspects of the biology of Mysis mixta (Lilljeborg 1852) (Crustacea, Mysidacea) in New Hampshire coastal waters

Cited by 15 publications

References 8 publications

Autecology of Limnomysis benedeni Czerniavsky, 1882 (Crustacea: Mysida) in Lake Constance, Southwestern Germany

Autecology of Limnomysis benedeni Czerniavsky, 1882 (Crustacea: Mysida) in Lake Constance, Southwestern Germany

Differentiation and frequency distributions of body weights in plants and animals

Diel changes in small-scale vertical distribution of hyperbenthic mysids

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