A comparison of two methods for sampling the Gulf of California mud shrimp, Neotrypaea uncinata (Crustacea

Thalassinidea)

Kimberly E. Garcia, Saundra J. Embry, Deborah Grossblat, Anne Marie Holbrook, Wendy M. McLaren, Sadie K. Reed, Herbert C. Wildey, Stephen M Shuster

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Methods for collecting mud shrimp are highly variable, and the efficiency of these techniques is poorly known. In October 1999, on a mud flat near Puerto Peñasco, Sonora, México, we compared the 'kiwi' method for extracting mud shrimp from their burrows, with a core sampling method designed to accomplish the same goal. The coring method involved pressing a 10 cm × 90 cm PVC pipe into the substratum, creating suction in the pipe, and withdrawing a core of mud and the shrimp within. The kiwi method required 8-10 researchers to march in a circle on the mud flat to gradually liquefy the mud, thereby forcing shrimp to the surface as the circle closed inward. Two transects of 30 cores conducted at high and at low tide yielded similar numbers of adult animals of both sexes. Previous results show that mud shrimp tend to aggregate within burrows when breeding. In this collection, the distribution of mud shrimp in cores did not differ from a Poisson distribution, suggesting that these shrimp were non-reproductive. The kiwi method provided no such information on mud shrimp distributions. Moreover, this method generated significantly fewer intact mud shrimp than were obtained in cores. Our results indicate that compared to the kiwi method, the coring method generates more animals, is less destructive of mud shrimp habitat, and provides more detailed information on mud shrimp populations.

Original languageEnglish (US)
Pages (from-to)1847-1854
Number of pages8
JournalJournal of Natural History
Volume37
Issue number15
DOIs
StatePublished - Aug 10 2003

Fingerprint

Crustacea
Gulf of California
shrimp
mud
sampling
methodology
mudflat
burrow
pipes
burrows
pipe
Poisson Distribution
gulf
comparison
method
Suction
animal
Polyvinyl Chloride
Breeding
Ecosystem

Keywords

  • Collection methods
  • Mud shrimp
  • Neotrypaea
  • Spatial distribution

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Ecology

Cite this

A comparison of two methods for sampling the Gulf of California mud shrimp, Neotrypaea uncinata (Crustacea : Thalassinidea). / Garcia, Kimberly E.; Embry, Saundra J.; Grossblat, Deborah; Holbrook, Anne Marie; McLaren, Wendy M.; Reed, Sadie K.; Wildey, Herbert C.; Shuster, Stephen M.

In: Journal of Natural History, Vol. 37, No. 15, 10.08.2003, p. 1847-1854.

Research output: Contribution to journalArticle

Garcia, Kimberly E. ; Embry, Saundra J. ; Grossblat, Deborah ; Holbrook, Anne Marie ; McLaren, Wendy M. ; Reed, Sadie K. ; Wildey, Herbert C. ; Shuster, Stephen M. / A comparison of two methods for sampling the Gulf of California mud shrimp, Neotrypaea uncinata (Crustacea : Thalassinidea). In: Journal of Natural History. 2003 ; Vol. 37, No. 15. pp. 1847-1854.
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