Maximum Daily Consumption and Respiration Rates at Four Temperatures for Five Species of Crayfish From Missouri, U.S.A. (Decapoda, Orconectes Spp.)

Abstract

We tested for differences in maximum daily consumption (Cmax) and respiration (R) rates at four temperatures (18, 22, 26, and 30 ± C) for cray shes with varying distributions in Missouri, U.S.A. Five species of cray sh were studied: Orconectes eupunctus (Williams, 1952), found only in the Eleven Point River downstream of Greer Spring, O. hylas (Faxon, 1890), found only in the Black and St. Francis River drainages in the Ozarks, O. luteus .Creaser, 1933) and O. punctimanus (Creaser, 1933), which are widespread through the Ozarks, and O. virilis (Hagen, 1870), which has a broad distributionin Missouri but is most abundant in the northern agriculturalregion and in the transitional area along the northern and western border of the Ozarks. For species restricted to the Ozarks, C max increased from 18 to 22 ± C and stabilized or declined at the two warmest temperatures, while C max peaked at 26 ± C for O. virilis before declining at 30 ± C. Signi cant interspeci c differences in C max were found at several temperatures. C max for O. virilis was signi cantly greater than C max for one or more Ozark cray shes at 18, 22, and especially at 26 ± C. Respiration rates (R) increased with temperature for all species, but few differences in R were observed between species. Results suggest that O. virilis has a potential bioenergetic advantage over Ozark cray shes, particularly at temperatures near 26 ± C. Our ndings hint that warming of Ozark streams due to changes in climate or land use could yield growth conditions which are more favorable for introduced species such as O. virilis and possibly O. rusticus compared to native species, resulting in increased probability of shifts in cray sh community composition. RÉSUMÉNous avons testé les différences de consommation journalière maximale (Cmax) et de taux de respiration (R) à 4 températures différentes (18, 22, 26 et 30 ± C) chez des écrevisses à répartitions 3 / variables dans le Missouri, U.S.A. Cinq espèces d'écrevisses ont été étudiées: Orconectes eupunctus (Williams, 1952), trouvée uniquement en aval de la rivière Eleven Point, Greer Spring; O. hylas (Faxon, 1890), rencontrée seulement dans les bassins de drainage des rivières Black et St Francis dans les Ozarks, O. luteus (Creaser, 1933) et O. punctimanus (Creaser, 1933, qui sont largement répandus dans les Ozarks, en n O. virilis (Hagen, 1870), qui a une large répartition dans le Missouri, mais est l'espèce la plus abondante dans la région agricole du nord et dans la zone transitoire à la limite nord et ouest des Ozarks. Chez les espèces limitées aux Ozarks, C max a augmenté de 18 à 22 ± C et s'est stabilisé ou a diminué aux deux températures les plus élevées, tandis que C max atteignait un pic à 26 ± C pour O. virilis avant de diminuer à 30 ± C. Des différences interspéci ques signi catives de C max ont été trouvées à plusieurs températures. C max était signi cativement plus élevé chez O. virilis que C max chez une, ou plusieurs, des écrevisses des Ozarks à 18, 22 et en particulier à 26 ± C. Les taux de respiration (R) ...

Effects of Ration Size and Temperature on Moult Increment and Metabolic Parameters of Juvenile Noble Crayfish, Astacus Astacus

“…A similar trend was found by in A. italicus: juveniles of this species had a higher oxygen uptake rates with the increased temperature (16 °C, 20 °C, and 24 °C). WHITLEDGE and RABENI (2003) observed a positive relationship between temperature (18 °C, 22 °C, 26 °C, and 30 °C) and respiration rate of five Orconectes species with a different distribution in Missouri, U.S.A. Our results showed no positive relationship between temperature and respiration rate in contrast with WHITLEDGE andRABENI (2003), but the occurrence of the noble crayfish in water bodies with different thermal regimes may explain this discrepancy. In fact, several invertebrates do not follow in their metabolism the Arrhenius' logarithmic trend, but their oxygen uptake is maintained at a relatively constant value within the environmental temperature range in which they usually live (NEWELL and NORTHCROFT, 1967;VERNBERG and VERNBERG, 1972;NEWELL, 1976;BÜCKLE et al, 1994;GUTIÉRREZ-YURRITA, 2000).…”

“…Together with fecundity (COREY, 1987;MUCK, 1995), growth rate is obviously one of the principal factors in population dynamics: large size is a prerequisite for crayfish to acquire and maintain a shelter (RABENI, 1985) and to avoid predation. In particular, a better knowledge of growth rate at diverse food availabilities (ABRAHAMSSON, 1971) and at different temperatures seems essential for the conservation of indigenous crayfish species facing threats from both introduced species and altered thermal habitats (WHITLEDGE and RABENI, 2003).…”

“…The Wisconsin fish bioenergetics models have been already used with invertebrates, e.g. mysids (RUDSTAM, 1989) and crayfish (WHITLEDGE and RABENI, 2003).…”

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“…After these studies were brought to a certain level, main control strategies related with the freshwater crayfish farming in rice fields were determined and this constituted the basis for the applications in use today (Thomas, 1965;Viosca, 1966;LaCaze, 1981). First scientific findings about the growth and production of freshwater crayfish in the rice fields were presented by Thomas (1965).…”

“…Temperature is an essential factor for living organisms. It has an important effect in survivability of the creatures and their behaviours, nourishments, growth, metabolisms, reproduction, local and geographical distributions (Ramirez, Herrera, Sandoval, Sevilla, & Rodriguez, 1994;Whitledge & Rabeni, 2003;Begon, Townsend, & Harper, 2006). The species is able to tolerate the wide range temperature values (4-32 °C) (Köksal, 1988).…”