Feeding deterrent and toxicity effects of apo-fucoxanthinoids and phycotoxins on a marine copepod ( Tigriopus californicus )

1997 ◽  
Vol 128 (2) ◽  
pp. 273-280 ◽  
Author(s):  
B. A. Shaw ◽  
R. J. Andersen ◽  
P. J. Harrison
Keyword(s):  
Feeding Deterrent ◽  
Tigriopus Californicus ◽  
Marine Copepod ◽  
Toxicity Effects

Isolation and characterization of cytochrome c from the marine copepod Tigriopus californicus

Gene ◽  
2000 ◽  
Vol 248 (1-2) ◽  
pp. 15-22 ◽  
Author(s):  
Paul D. Rawson ◽  
Daniel A. Brazeau ◽  
Ronald S. Burton
Keyword(s):  
Cytochrome C ◽  
Tigriopus Californicus ◽  
Marine Copepod ◽  
Isolation And Characterization

Differentiation and Integration of the Genome in Populations of the Marine Copepod Tigriopus californicus

Evolution ◽  
1987 ◽  
Vol 41 (3) ◽  
pp. 504 ◽  
Author(s):  
Ronald S. Burton
Keyword(s):  
Tigriopus Californicus ◽  
Marine Copepod

DIFFERENTIATION AND INTEGRATION OF THE GENOME IN POPULATIONS OF THE MARINE COPEPOD TIGRIOPUS CALIFORNICUS

Evolution ◽  
1987 ◽  
Vol 41 (3) ◽  
pp. 504-513 ◽  
Author(s):  
Ronald S. Burton
Keyword(s):  
Tigriopus Californicus ◽  
Marine Copepod

scholarly journals On the bioconversion of dietary carotenoids to astaxanthin and its distribution in the marine copepod, Tigriopus californicus

2017 ◽  
Author(s):  
Ryan J. Weaver ◽  
Paul A. Cobine ◽  
Geoffrey E. Hill
Keyword(s):  
Model System ◽  
Phenotypic Traits ◽  
Tigriopus Californicus ◽  
Treatment Groups ◽  
Marine Copepod ◽  
Feeding Experiments ◽  
Carotenoid Coloration ◽  
Red Color ◽  
Ideal Model System ◽  
Red Coloration

AbstractRed carotenoid-based coloration is widely distributed across marine and terrestrial animals and has taken a prominent role in studies of how phenotypic traits evolve in response to natural and sexual selection. Key to these studies is an understanding of the physiological mechanisms that give rise to red coloration, yet an ideal model system for such work has not been identified. The red marine copepod Tigriopus californicus is used as a model system for studies in ecotoxicology, genetics, and physiology, but the mechanisms involved in its bright red coloration have not been well studied. Like nearly all animals that display red carotenoid coloration, T. californicus likely convert yellow carotenoids present in their algal diet to red carotenoids. We conducted precursor/product feeding experiments to demonstrate that T. californicus bioconverts dietary carotenoids to the red carotenoid, astaxanthin. In separate treatment groups, copepods were fed carotenoids that are precursors to specific astaxanthin bioconversion pathways. We found that copepods from each precursor pigment group produced astaxanthin, and that the amount produced depended on which carotenoid was supplemented. We also describe the distribution of astaxanthin in developing egg sacs and show that the red color of the naupliar eyespot is not due to astaxanthin. We briefly discuss the potential of Tigriopus californicus to serve as a model system for the study of carotenoid metabolism in animals.

Sex Conversion Induced by Hydrostatic Pressure in the Marine Copepod Tigriopus californicus

Science ◽  
1965 ◽  
Vol 150 (3703) ◽  
pp. 1619-1621 ◽  
Author(s):  
V. D. Vacquier ◽  
W. L. Belser
Keyword(s):  
Hydrostatic Pressure ◽  
Tigriopus Californicus ◽  
Marine Copepod

An experimental test of mate choice for red carotenoid coloration in the marine copepod Tigriopus californicus

Ethology ◽  
2019 ◽  
Vol 126 (3) ◽  
pp. 344-352
Author(s):  
Matthew J. Powers ◽  
Geoffrey E. Hill ◽  
Ryan J. Weaver
Keyword(s):  
Mate Choice ◽  
Experimental Test ◽  
Tigriopus Californicus ◽  
Marine Copepod ◽  
Carotenoid Coloration

scholarly journals Evidence for hybrid breakdown in production of red carotenoids in the marine invertebrate Tigriopus californicus

PLoS ONE ◽  
2021 ◽  
Vol 16 (11) ◽  
pp. e0259371
Author(s):  
Matthew J. Powers ◽  
Lucas D. Martz ◽  
Ronald S. Burton ◽  
Geoffrey E. Hill ◽  
Ryan J. Weaver
Keyword(s):  
Marine Invertebrate ◽  
Atp Synthesis ◽  
Carotenoid Pigment ◽  
Hybrid Breakdown ◽  
Deficient Diet ◽  
Tigriopus Californicus ◽  
Offspring Development ◽  
Marine Copepod ◽  
Hybrid Dysfunction ◽  
Hybrid Lines

The marine copepod, Tigriopus californicus, produces the red carotenoid pigment astaxanthin from yellow dietary precursors. This ‘bioconversion’ of yellow carotenoids to red is hypothesized to be linked to individual condition, possibly through shared metabolic pathways with mitochondrial oxidative phosphorylation. Experimental inter-population crosses of lab-reared T. californicus typically produces low-fitness hybrids is due in large part to the disruption of coadapted sets nuclear and mitochondrial genes within the parental populations. These hybrid incompatibilities can increase variability in life history traits and energy production among hybrid lines. Here, we tested if production of astaxanthin was compromised in hybrid copepods and if it was linked to mitochondrial metabolism and offspring development. We observed no clear mitonuclear dysfunction in hybrids fed a limited, carotenoid-deficient diet of nutritional yeast. However, when yellow carotenoids were restored to their diet, hybrid lines produced less astaxanthin than parental lines. We observed that lines fed a yeast diet produced less ATP and had slower offspring development compared to lines fed a more complete diet of algae, suggesting the yeast-only diet may have obscured effects of mitonuclear dysfunction. Astaxanthin production was not significantly associated with development among lines fed a yeast diet but was negatively related to development in early generation hybrids fed an algal diet. In lines fed yeast, astaxanthin was negatively related to ATP synthesis, but in lines fed algae, the relationship was reversed. Although the effects of the yeast diet may have obscured evidence of hybrid dysfunction, these results suggest that astaxanthin bioconversion may still be related to mitochondrial performance and reproductive success.

scholarly journals On the bioconversion of dietary carotenoids to astaxanthin in the marine copepod, Tigriopus californicus

2018 ◽  
Vol 40 (2) ◽  
pp. 142-150 ◽  
Author(s):  
Ryan J Weaver ◽  
Paul A Cobine ◽  
Geoffrey E Hill
Keyword(s):  
Tigriopus Californicus ◽  
Marine Copepod
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