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Observations of the Reproductive Cycles and Ecology of the Common Brachyura and Crablike Anomura of Puget Sound, Washington

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Title:Observations of the Reproductive Cycles and Ecology of the Common Brachyura and Crablike Anomura of Puget Sound, Washington
Authors:Knudsen, Jens W.
Date Issued:Jan 1964
Publisher:University of Hawai'i Press
Citation:Knudsen JW. 1964. Observations of the reproductive cycles and ecology of the common brachyura and crablike anomura of Puget Sound, Washington. Pac Sci 18(1): 3-33.
Abstract:It was the aim of this research project to
study the growth and reproductive cycles of the
Puget Sound Brachyura and Anomura as they
are related to oceanographic and environmental
conditions. These goals were designed to answer
many of the basic questions concerning the local
crab population and to serve as a basis for more
restricted physiological experimentation dealing
with behavior and reproductive cycles. A continuous
survey of the intertidal and near-shore
crab fauna was made to determine the seasonal
change in gonad development, egg production,
the time of fertilization, deposition of eggs, and
other related-features. As many species of Anomura
and Brachyura as could be accommodated
were captured and maintained in running sea
water aquaria for additional studies of food and
feeding habits, ecdysis, copulation, and other
phenomena linked to maturity and reproduction. The aim to survey all Brachyura and Anomura
in the southern Puget Sound area had to
be modified to exclude the hermit crabs .due to
the extreme amount of time required for field
observation of this group. It has been our goal
to correlate reproductive activity of all of these
species with annual environmental changes so
far as possible and to determine trigger mechanisms
involved in the reproductive cycles. Considerable
experimentation was attempted along
these lines as is discussed herein.
Appears in Collections: Pacific Science Volume 18, Number 1, 1964

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