Comparison of Chemoreceptive Abilities of the Hydrothermal Shrimp Mirocaris fortunata and the Coastal Shrimp Palaemon elegans

Abstract

Chemoreception might play an important role for endemic shrimp that inhabit deep and dark hydrothermal vents to find food sources and to locate active edifices that release specific chemicals. We compared the chemosensory abilities of the hydrothermal shrimp Mirocaris fortunata and the coastal related species, Palaemon elegans. The detection of diverse ecologically relevant chemical stimuli by the antennal appendages was measured with electroantennography. The 2 species can detect food-related odor and sulfide, a short-distance stimulus, via both their antennae and antennules. Neither iron nor manganese, considered as long-distance stimuli, was detected by the antennal appendages. Investigation of the ultrastructure of aesthetasc sensilla revealed no specific features of the hydrothermal species regarding innervation by olfactory sensory neurons. Pore-like structures occurring in the aesthetasc cuticle and dense bacterial covering seem to be unique to hydrothermal species, but their potential link to chemoreception remains elusive.

Chemosensory Basis of Feeding Behavior in Pacific White Shrimp,Litopenaeus vannamei

“…2A, C, E). The cuticle of the setal shafts of aesthetascs is thin, especially more distally (Machon et al, 2018); and in our study, as in others on shrimp (e.g., Zhu et al, 2011;Zbinden et al, 2017;Krieger et al, 2020), this resulted in their collapsing when dried in a vacuum, despite our best efforts ( Fig. 2E).…”

Blow Your Nose, Shrimp! Unexpectedly Dense Bacterial Communities Occur on the Antennae and Antennules of Hydrothermal Vent Shrimp

“…Detection of odorant molecules was tested on Rimicaris exoculata (Renninger et al, 1995) and Mirocaris fortunata (Machon et al, 2018) through electrophysiology approaches. These studies showed that these two species can detect sulfide and organic stimuli (such as bacterial homogenates or dead shrimp TABLE 2 | Percentages of the reads corresponding to the dominant variants identified in this study, best BLAST hits and sequence similarities.…”

“…Carbon molecules produced by gill chamber epibionts have been shown to be transferred through the thin (0.5 µm) inner branchiostegite cuticle of R. exoculata, providing trans-tegumental nutrition (Ponsard et al, 2013). The very thin cuticle of the aesthetascs sensilla (0.5-1.5 µm at the apex in M. fortunata), as well as the pore-like structures occurring in the aesthetasc cuticle (Machon et al, 2018) could permit such transfer, allowing host cells to benefit from bacterial primary production. This would be of limited significance to the whole animal, but could be significant for nutrition of sensory cells.…”

“…The sense of smell is associated with intermittent interaction between the odor environment and these chemosensory organs (Schmitt and Ache, 1979). Aesthetascs sensilla are characterized by a thin cuticle (Kamio and Derby, 2017;Machon et al, 2018), permeable to environment chemicals which will cross the cuticle and bind to the olfactory sensory neurons. Bimodal sensilla, on the other hand, have a thick and non-permeable cuticle, such that environmental chemicals enter them only via a terminal pore, and bind to chemo-and mechano-receptor (Kamio and Derby, 2017).…”

A Review What Is Hydrothermal ?

“…Pada pelepasan material lama dan pengendapan material baru menjadi ciri aktivitas hydrothermal (49)(50)(51)(52),serta banyak mineral pembentuk proses yang melibatkan solusi, termasuk pelapukan dan diagenesa (18; 53). Hydrothermal merupakan suatu proses pembentukan mineral yang terjadi disekitar sumber dari panas bumi didalam kulit bumi yang terjadi akibat adanya injeksi dari magma terhadap air dengan kata lain terjadi pelarutan oleh magma sisa yang bercampur dengan air tanah sehingga mengalami pengkristalan (54)(55)(56)(57)(58)(59)…”