|
|
|
|
|
Machon, Julia; Krieger, Jakob; Meth, Rebecca; Zbinden, Magali; Ravaux, Juliette; Montagné, Nicolas; Chertemps, Thomas; Harzsch, Steffen. |
Alvinocaridid shrimps are emblematic representatives of the deep hydrothermal vent fauna at the Mid-Atlantic Ridge. They are adapted to a mostly aphotic habitat with extreme physicochemical conditions in the vicinity of the hydrothermal fluid emissions. Here, we investigated the brain architecture of the vent shrimp Rimicaris exoculata to understand possible adaptations of its nervous system to the hydrothermal sensory landscape. Its brain is modified from the crustacean brain ground pattern by featuring relatively small visual and olfactory neuropils that contrast with well-developed higher integrative centers, the hemiellipsoid bodies. We propose that these structures in vent shrimps may fulfill functions in addition to higher order sensory processing... |
Tipo: Text |
|
Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00509/62108/66291.pdf |
| |
|
|
Torres, Gabriela; Charmantier, Guy; Wilcockson, David; Harzsch, Steffen; Giménez, Luis. |
Developing physiological mechanistic models to predict species’ responses to climate‐driven environmental variables remains a key endeavor in ecology. Such approaches are challenging, because they require linking physiological processes with fitness and contraction or expansion in species’ distributions. We explore those links for coastal marine species, occurring in regions of freshwater influence (ROFIs) and exposed to changes in temperature and salinity. First, we evaluated the effect of temperature on hemolymph osmolality and on the expression of genes relevant for osmoregulation in larvae of the shore crab Carcinus maenas. We then discuss and develop a hypothetical model linking osmoregulation, fitness, and species expansion/contraction toward or away... |
Tipo: Text |
Palavras-chave: Carcinus maenas; Climate change; Coastal zone; Larva; MRNA expression; Multiple stressors; Osmoregulation; Salinity; Temperature. |
Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00692/80408/83516.pdf |
| |
|
|
|