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In 2019, an initial inventory of sea anemones (Cnidaria: Actiniaria) from La Paz Bay, southern Gulf of California (Mexico) was carried out:
“First inventory of sea anemones (Cnidaria: Actiniaria) from La Paz Bay, southern Gulf of California (Mexico)”.
We have taken the following data from Phymactis clematis for this study:
The cylindrical body column was 1.2 cm high and had a diameter of 1.9 cm.
The tentacles were up to 1.9 cm long and there were 180 polyps in six cycles. The polyps were simple, short, sticky, smooth, and all of similar length.
The diameter of the oral disc was 1.9 cm.
The color of the foot disc of the living specimens examined in the inventory was light red.
The column was red with dark red vesicles.
The acrorhagi are beige. The oral disc is dark red with a dark red spot around the mouth. The tentacles are dark red with a black base.
Mesenterial deposits were visible in the oral disc.
The anemone Phymactis clematis exhibits intraspecific aggression and
An investigation of the dominance relationships between the three color variants collected in June 1980 in Vĩna del Mar, Chile, revealed that they are equally aggressive.
The fights were asymmetrical, with larger individuals showing aggression toward smaller opponents earlier and winning the fights.
The results of the experimental competitions appeared to be based solely on size-dependent differences in the threshold for triggering aggression.
In fact, however, there are several color morphs of Phymactis clematis in blue, red, green, red-green, and blue.
Further research aims to examine the color acceptance of the symbiotic partner Allopetrolisthes spinifrons.
The majority of Allopetrolisthes spinifrons were found in red-green anemones, a color combination most similar to that of the porcelain crab.
The color morphs are believed to have a genetic origin and were not caused or forced by environmental influences or the activities of the porcelain crabs.
For further information on these small, colorful anemones, we would like to express our sincere thanks to Dr. Martin Thiel, Chile, and Dr. Juan Antonio Baeza Migueles, USA.
Synonyms:
Actinia clematis Drayton in Dana, 1846 · unaccepted (original binomen)
Actinia florida Drayton in Dana, 1846 · unaccepted
Phymactis florida Edw. & H. · unaccepted
“First inventory of sea anemones (Cnidaria: Actiniaria) from La Paz Bay, southern Gulf of California (Mexico)”.
We have taken the following data from Phymactis clematis for this study:
The cylindrical body column was 1.2 cm high and had a diameter of 1.9 cm.
The tentacles were up to 1.9 cm long and there were 180 polyps in six cycles. The polyps were simple, short, sticky, smooth, and all of similar length.
The diameter of the oral disc was 1.9 cm.
The color of the foot disc of the living specimens examined in the inventory was light red.
The column was red with dark red vesicles.
The acrorhagi are beige. The oral disc is dark red with a dark red spot around the mouth. The tentacles are dark red with a black base.
Mesenterial deposits were visible in the oral disc.
The anemone Phymactis clematis exhibits intraspecific aggression and
An investigation of the dominance relationships between the three color variants collected in June 1980 in Vĩna del Mar, Chile, revealed that they are equally aggressive.
The fights were asymmetrical, with larger individuals showing aggression toward smaller opponents earlier and winning the fights.
The results of the experimental competitions appeared to be based solely on size-dependent differences in the threshold for triggering aggression.
In fact, however, there are several color morphs of Phymactis clematis in blue, red, green, red-green, and blue.
Further research aims to examine the color acceptance of the symbiotic partner Allopetrolisthes spinifrons.
The majority of Allopetrolisthes spinifrons were found in red-green anemones, a color combination most similar to that of the porcelain crab.
The color morphs are believed to have a genetic origin and were not caused or forced by environmental influences or the activities of the porcelain crabs.
For further information on these small, colorful anemones, we would like to express our sincere thanks to Dr. Martin Thiel, Chile, and Dr. Juan Antonio Baeza Migueles, USA.
Synonyms:
Actinia clematis Drayton in Dana, 1846 · unaccepted (original binomen)
Actinia florida Drayton in Dana, 1846 · unaccepted
Phymactis florida Edw. & H. · unaccepted
