Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

POPULATION DYNAMICS OF THE CRAYFISH PROCAMBARUS SPICULIFER OBSERVED IN DIFFERENT-SIZED STREAMS IN RESPONSE TO TWO DROUGHTS

POPULATION DYNAMICS OF THE CRAYFISH PROCAMBARUS SPICULIFER OBSERVED IN DIFFERENT-SIZED STREAMS IN... Body size is an important determinant of an animal's energetic needs (Peters, 1983), ability to use available resources (Werner and Gilliam, 1984), and susceptibility to predation (Kusano, 1981; Polis, 1981). For some animals, size may be a better predictor of fecundity than is age (Kirkpatrick, 1984). Size-related correlations have been ob- served in crayfish populations. Their fecun- dity (Mason, 1963; Vannote, 1963; Prins, 1968; Shimizu and Goldman, 1983) and competitive success (Bovbjerg, 1953, 1956; Rabeni, 1985) increase with body size and susceptibility to predation decreases (Stein, 1977). However, crayfish body-size distribu- tions have been observed to fluctuate with habitat change, such as water depth. As the water depth decreases, in either a lotic or lentic habitat, the ratio of juveniles per adult increases and the adult mean body size be- comes smaller (Caine, 1978; Kushlan and Kushlan, 1979; Taylor, 1983). Caine ob- served that mean body size was larger for Procambarus kilbyi in nondrying habitats, while simultaneously finding smaller mean body-size populations in areas that were drying. Rabeni (1985) observed a similar size-depth relationship in the crayfish Or- conectes punctimanus. The size benefits, therefore, may be lost during low-water pe- riods such as droughts. The study areas that http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Crustacean Biology Brill

POPULATION DYNAMICS OF THE CRAYFISH PROCAMBARUS SPICULIFER OBSERVED IN DIFFERENT-SIZED STREAMS IN RESPONSE TO TWO DROUGHTS

Taylor, Robert C.
Journal of Crustacean Biology , Volume 8 (3): 401 – Jan 1, 1988
Download PDF
9 pages

Loading next page...
 
/lp/brill/population-dynamics-of-the-crayfish-procambarus-spiculifer-observed-in-X635J5Y4Nj

References (0)

References for this paper are not available at this time. We will be adding them shortly, thank you for your patience.

Publisher
Brill
Copyright
Copyright 1988 by Koninklijke Brill NV, Leiden, The Netherlands
ISSN
0278-0372
eISSN
1937-240X
DOI
10.1163/193724088X00279
Publisher site
See Article on Publisher Site

Abstract

Body size is an important determinant of an animal's energetic needs (Peters, 1983), ability to use available resources (Werner and Gilliam, 1984), and susceptibility to predation (Kusano, 1981; Polis, 1981). For some animals, size may be a better predictor of fecundity than is age (Kirkpatrick, 1984). Size-related correlations have been ob- served in crayfish populations. Their fecun- dity (Mason, 1963; Vannote, 1963; Prins, 1968; Shimizu and Goldman, 1983) and competitive success (Bovbjerg, 1953, 1956; Rabeni, 1985) increase with body size and susceptibility to predation decreases (Stein, 1977). However, crayfish body-size distribu- tions have been observed to fluctuate with habitat change, such as water depth. As the water depth decreases, in either a lotic or lentic habitat, the ratio of juveniles per adult increases and the adult mean body size be- comes smaller (Caine, 1978; Kushlan and Kushlan, 1979; Taylor, 1983). Caine ob- served that mean body size was larger for Procambarus kilbyi in nondrying habitats, while simultaneously finding smaller mean body-size populations in areas that were drying. Rabeni (1985) observed a similar size-depth relationship in the crayfish Or- conectes punctimanus. The size benefits, therefore, may be lost during low-water pe- riods such as droughts. The study areas that

Journal

Journal of Crustacean Biology – Brill

Published: Jan 1, 1988

There are no references for this article.