Color changes in crustaceans, especially in Palaemonetes

Perkins, Earle B.

doi:10.1002/jez.1400500106

Cited by 123 publications

(32 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Table 1 shows the sequences that have been established for members of this family. RPCH/AKH peptides were recognized more than half a century ago, as hormones causing colour change in crustaceans and effecting energy metabolism in insects (Perkins, 1928;Steele, 1961). Recently, observations of bioactivities in vitro of peptide family members and localization of these peptides to neurons and nerve endings by immunohistochemistry suggest that at least some family members function as locally released modulators that influence gut, heart, skeletal-muscle and other neurons (Schooneveld et al, 1983;O'Shea et al, 1984;Dickinson & Marder, 1989).…”

Section: Introductionmentioning

confidence: 99%

The fruitfly Drosophila melanogaster contains a novel charged adipokinetic-hormone-family peptide

Schäffer

Noyes

Slaughter

et al. 1990

Biochemical Journal

View full text Add to dashboard Cite

A member of the RPCH/AKH (red-pigment-concentrating hormone/adipokinetic hormone) family of arthropod neuropeptides was identified in the fruitfly Drosophila melanogaster, and its structure was determined by automated Edman degradation and m.s. using fast-atom-bombardment ionization and a tandem hybrid instrument capable of high sensitivity. The sequence of this peptide, which we call ‘DAKH’, is pGlu-Leu-Thr-Phe-Ser-Pro-Asp-Trp-NH2 (where pGlu is pyroglutamic acid and Trp-NH2 is tryptophan carboxyamide). H.p.l.c. analyses of extracts of the three body segments revealed that more than 80% of the peptide is contained in the thorax. Although DAKH is typical of family members in its general structure and distribution in the animal, it is unique in containing a residue which is charged under physiological conditions. The evolutionary significance of this change is considered.

show abstract

Section: Introductionmentioning

confidence: 99%

The fruitfly Drosophila melanogaster contains a novel charged adipokinetic-hormone-family peptide

Schäffer

Noyes

Slaughter

et al. 1990

Biochemical Journal

View full text Add to dashboard Cite

show abstract

“…In order to evoke a fast response, relatively high intensity of PAR was needed, but intensities likely to occur under sea ice also caused a response (UV-experiment control). Pigment dispersal due to exposure to visible light (PAR) is a common phenomenon and has been shown to occur in various crustacean species, mostly decapods (Perkins 1928;Brown and Sandeen 1948;Pautsch 1953;Rao 1966;Barnwell 1968;Coohill et al 1970;Johnson 1974;Miner et al 2000;Auerswald et al 2008). Apherusa glacialis showed an increase in the CI following both higher light intensities and longer exposure times.…”

Section: Photoprotectionmentioning

confidence: 99%

The adaptive significance of chromatophores in the Arctic under-ice amphipod Apherusa glacialis

et al. 2010

View full text Add to dashboard Cite

Solar radiation is a crucial factor governing biological processes in polar habitats. Containing harmful ultraviolet radiation (UVR), it can pose a threat for organisms inhabiting surface waters of polar oceans. The present study investigated the physiological color change in the obligate sympagic amphipod Apherusa glacialis mediated by red-brown chromatophores, which cover the body and internal organs of the species. Short-term experimental exposure to photosynthetic active radiation (PAR) led to pigment dispersal in the chromatophores, resulting in darkening of the animal. Irradiation in the PAR range (400-700 nm) was identified as the main trigger with high light intensities evoking marked responses within 15 min. After exposure to high PAR, darkness led to a slow aggregation of pigments in the cell center after 24 h. Experiments revealed no statistically significant change in coloration of the animal when exposed to different background colors nor UV radiation. Our results point to a doseand time-dependent photoprotective role of chromatophores in the amphipod, presuming a shielding effect from harmful radiation in a dispersed state. The reversible nature of the physiological color change enables the species to adapt dynamically to prevailing light conditions and thereby minimize the cost of increased conspicuousness toward visually hunting predators.

show abstract

“…For this purpose photography has been of service. By means of succession photographs of the same living melanophores at different stages the changes in these color-cells have been followed in small groups (Spaeth, 1913a) in a single cell (Perkins, 1928), or in a larger group (Parker, 1935). This procedure calls for the repeated identification in a living animal after considerable intervals of time of a particular color-cell or group of such cells and their rephotographing, an exacting exercise at the least.…”

mentioning

confidence: 99%