Relationship between pigmentation and reproduction in two species of Diaptomus (copepoda)

Journal Article · Mon Jan 01 04:00:00 EST 1979 · Limnol. Oceanogr.; (United States)

DOI:https://doi.org/10.4319/lo.1979.24.1.0038· OSTI ID:6947142

Hairston, Jr, N G

Adult Diaptomus sicilis and Diaptomus nevadensis in two central Washington lakes show a seasonal range in body pigmentation: from high throughout the year to markedly seasonal with a winter and early spring peak. Both species have winter-spring peaks in reproduction in both lakes. Pigment is accumulated by adult females and concentrated in their eggs and nauplii. During the day, the nauplii are at the surface of the lakes where visible light is intense, and it is suggested that the carotenoid functions as photoprotection. Seasonality of adult pigment content varies as a function of predation pressure. In a population experiencing little predation, adults are highly pigmented throughout the year; as predation pressure on the populations increases, the timing of pigmentation maxima contracts to the period of reproduction.

• Research Organization: Univ. of Rhode Island, Kingston
• OSTI ID: 6947142
• Journal Information: Limnol. Oceanogr.; (United States), Journal Name: Limnol. Oceanogr.; (United States) Vol. 24:1; ISSN LIOCA
• Country of Publication: United States
• Language: English

Related Subjects

520100* -- Environment
Aquatic-- Basic Studies-- (-1989)
54 ENVIRONMENTAL SCIENCES
ANIMALS
AQUATIC ORGANISMS
ARTHROPODS
BIOLOGICAL EVOLUTION
BIOLOGY
CAROTENOIDS
COPEPODS
CRUSTACEANS
HYDROCARBONS
INVERTEBRATES
LAKES
LIFE CYCLE
NORTH AMERICA
ORGANIC COMPOUNDS
PACIFIC NORTHWEST REGION
PIGMENTS
REPRODUCTION
SEASONAL VARIATIONS
SURFACE WATERS
TERPENES
USA
VARIATIONS
WASHINGTON