The Experts below are selected from a list of 207 Experts worldwide ranked by ideXlab platform

Aran T Mooney - One of the best experts on this subject based on the ideXlab platform.

  • changes in feeding behavior of longfin squid Doryteuthis pealeii during laboratory exposure to pile driving noise
    Marine Environmental Research, 2021
    Co-Authors: Ian T. Jones, Jenni A. Stanley, James F Peyla, Hadley G Clark, Zhongchang Song, Aran T Mooney
    Abstract:

    Anthropogenic noise can cause diverse changes in animals' behaviors, but effects on feeding behaviors are understudied, especially for key invertebrate taxa. With the offshore wind industry expanding, concern exists regarding potential impacts of pile driving noise on squid and other commercially and ecologically vital taxa. We investigated changes in feeding and alarm (defense) behaviors of squid, Doryteuthis pealeii, predating on killifish, Fundulus heteroclitus, during playbacks of pile driving noise recorded from wind farm construction within squids' habitat. Fewer squid captured killifish during noise exposure compared to controls. Squid had more failed predation attempts when noise was started during predation sequences. Alarm responses to noise were similar whether or not squid were hunting killifish, indicating similar vigilance to threat stimuli in these contexts. Additionally, novel hearing measurements on F. heteroclitus confirmed they could detect the noise. These results indicate noise can disrupt feeding behaviors of a key invertebrate species, and will leverage future studies on how noise may disrupt squids' vital ecological interactions.

  • impulsive pile driving noise elicits alarm responses in squid Doryteuthis pealeii
    Marine Pollution Bulletin, 2020
    Co-Authors: Ian T. Jones, Jenni A. Stanley, Aran T Mooney
    Abstract:

    Abstract Pile driving occurs during construction of marine platforms, including offshore windfarms, producing intense sounds that can adversely affect marine animals. We quantified how a commercially and economically important squid (Doryteuthis pealeii: Lesueur 1821) responded to pile driving sounds recorded from a windfarm installation within this species' habitat. Fifteen-minute portions of these sounds were played to 16 individual squid. A subset of animals (n = 11) received a second exposure after a 24-h rest period. Body pattern changes, inking, jetting, and startle responses were observed and nearly all squid exhibited at least one response. These responses occurred primarily during the first 8 impulses and diminished quickly, indicating potential rapid, short-term habituation. Similar response rates were seen 24-h later, suggesting squid re-sensitized to the noise. Increased tolerance of anti-predatory alarm responses may alter squids' ability to deter and evade predators. Noise exposure may also disrupt normal intraspecific communication and ecologically relevant responses to sound.

  • ocean acidification responses in paralarval squid swimming behavior using a novel 3d tracking system
    Hydrobiologia, 2018
    Co-Authors: Casey J Zakroff, Aran T Mooney, Colin Wirth
    Abstract:

    Chronic embryonic exposure to ocean acidification (OA) has been shown to degrade the aragonitic statolith of paralarval squid, Doryteuthis pealeii, a key structure for their swimming behavior. This study examined if day-of-hatching paralarval D. pealeii from eggs reared under chronic OA demonstrated measurable impairments to swimming activity and control. This required the development of a novel, cost-effective, and robust method for 3D motion tracking and analysis. Squid eggs were reared in pCO2 levels in a dose-dependent manner ranging from 400 to 2200 ppm. Initial 2D experiments showed paralarvae in higher acidification environments spent more time at depth. In 3D experiments, velocity, particularly positive and negative vertical velocities, significantly decreased from 400 to 1000 ppm pCO2, but showed non-significant decreases at higher concentrations. Activity and horizontal velocity decreased linearly with increasing pCO2, indicating a subtle impact to paralarval energetics. Patterns may have been obscured by notable individual variability in the paralarvae. Responses were also seen to vary between trials on cohort or potentially annual scales. Overall, paralarval swimming appeared resilient to OA, with effects being slight. The newly developed 3D tracking system provides a powerful and accessible method for future studies to explore similar questions in the larvae of aquatic taxa.

  • Adverse effects of ocean acidification on early development of squid (Doryteuthis pealeii).
    Public Library of Science (PLoS), 2026
    Co-Authors: Maxwell B Kaplan, Aran T Mooney, Daniel C Mccorkle, Anne L Cohen
    Abstract:

    Anthropogenic carbon dioxide (CO2) is being absorbed into the ocean, altering seawater chemistry, with potentially negative impacts on a wide range of marine organisms. The early life stages of invertebrates with internal and external aragonite structures may be particularly vulnerable to this ocean acidification. Impacts to cephalopods, which form aragonite cuttlebones and statoliths, are of concern because of the central role they play in many ocean ecosystems and because of their importance to global fisheries. Atlantic longfin squid (Doryteuthis pealeii), an ecologically and economically valuable taxon, were reared from eggs to hatchlings (paralarvae) under ambient and elevated CO2 concentrations in replicated experimental trials. Animals raised under elevated pCO2 demonstrated significant developmental changes including increased time to hatching and shorter mantle lengths, although differences were small. Aragonite statoliths, critical for balance and detecting movement, had significantly reduced surface area and were abnormally shaped with increased porosity and altered crystal structure in elevated pCO2-reared paralarvae. These developmental and physiological effects could alter squid paralarvae behavior and survival in the wild, directly and indirectly impacting marine food webs and commercial fisheries

Ian T. Jones - One of the best experts on this subject based on the ideXlab platform.

  • changes in feeding behavior of longfin squid Doryteuthis pealeii during laboratory exposure to pile driving noise
    Marine Environmental Research, 2021
    Co-Authors: Ian T. Jones, Jenni A. Stanley, James F Peyla, Hadley G Clark, Zhongchang Song, Aran T Mooney
    Abstract:

    Anthropogenic noise can cause diverse changes in animals' behaviors, but effects on feeding behaviors are understudied, especially for key invertebrate taxa. With the offshore wind industry expanding, concern exists regarding potential impacts of pile driving noise on squid and other commercially and ecologically vital taxa. We investigated changes in feeding and alarm (defense) behaviors of squid, Doryteuthis pealeii, predating on killifish, Fundulus heteroclitus, during playbacks of pile driving noise recorded from wind farm construction within squids' habitat. Fewer squid captured killifish during noise exposure compared to controls. Squid had more failed predation attempts when noise was started during predation sequences. Alarm responses to noise were similar whether or not squid were hunting killifish, indicating similar vigilance to threat stimuli in these contexts. Additionally, novel hearing measurements on F. heteroclitus confirmed they could detect the noise. These results indicate noise can disrupt feeding behaviors of a key invertebrate species, and will leverage future studies on how noise may disrupt squids' vital ecological interactions.

  • impulsive pile driving noise elicits alarm responses in squid Doryteuthis pealeii
    Marine Pollution Bulletin, 2020
    Co-Authors: Ian T. Jones, Jenni A. Stanley, Aran T Mooney
    Abstract:

    Abstract Pile driving occurs during construction of marine platforms, including offshore windfarms, producing intense sounds that can adversely affect marine animals. We quantified how a commercially and economically important squid (Doryteuthis pealeii: Lesueur 1821) responded to pile driving sounds recorded from a windfarm installation within this species' habitat. Fifteen-minute portions of these sounds were played to 16 individual squid. A subset of animals (n = 11) received a second exposure after a 24-h rest period. Body pattern changes, inking, jetting, and startle responses were observed and nearly all squid exhibited at least one response. These responses occurred primarily during the first 8 impulses and diminished quickly, indicating potential rapid, short-term habituation. Similar response rates were seen 24-h later, suggesting squid re-sensitized to the noise. Increased tolerance of anti-predatory alarm responses may alter squids' ability to deter and evade predators. Noise exposure may also disrupt normal intraspecific communication and ecologically relevant responses to sound.

  • Assessing impacts of offshore pile driving noise on the antipredator defense and shoaling behaviors of squid (Doryteuthis pealeii)
    The Journal of the Acoustical Society of America, 2018
    Co-Authors: Ian T. Jones, Jenni A. Stanley, T. Aran Mooney
    Abstract:

    Impulsive pile driving occurs during construction of marine platforms, producing intense sounds that may adversely impact animals’ physiology and behavior. Little is known regarding how this noise impacts sound-sensitive invertebrates such as squid, which is surprising given squids’ relative abundance and key ecological role. We quantified how a commercially important squid species (Doryteuthis pealeii) behaviorally responded (in a controlled environment) to pile driving sounds recorded from an offshore windfarm installation within this species' habitat. Both sound pressure and particle motion components of the sound were quantified. Fifteen-minute portions of the recordings were played to individual squid. Body pattern changes, inking, jetting, and startle responses were observed during sound exposure and all squid exhibited at least one response. These responses occurred primarily during the first few noise impulses and diminished quickly over the first minute of playback, indicating short-term habituation. Responses returned after a 24-hr rest, indicating re-sensitization. Separate experiments investigated changes in shoaling behaviors by quantifying shoal cohesion and polarity in groups of squid during ten-minute noise exposures. Rapid habituation of antipredator alarm responses and changes in shoaling dynamics may alter squids’ susceptibility to predation. Noise exposure may also disrupt normal intraspecific communication and ecologically relevant behavioral responses to sounds.Impulsive pile driving occurs during construction of marine platforms, producing intense sounds that may adversely impact animals’ physiology and behavior. Little is known regarding how this noise impacts sound-sensitive invertebrates such as squid, which is surprising given squids’ relative abundance and key ecological role. We quantified how a commercially important squid species (Doryteuthis pealeii) behaviorally responded (in a controlled environment) to pile driving sounds recorded from an offshore windfarm installation within this species' habitat. Both sound pressure and particle motion components of the sound were quantified. Fifteen-minute portions of the recordings were played to individual squid. Body pattern changes, inking, jetting, and startle responses were observed during sound exposure and all squid exhibited at least one response. These responses occurred primarily during the first few noise impulses and diminished quickly over the first minute of playback, indicating short-term habituat...

Casey J Zakroff - One of the best experts on this subject based on the ideXlab platform.

  • ocean acidification responses in paralarval squid swimming behavior using a novel 3d tracking system
    Hydrobiologia, 2018
    Co-Authors: Casey J Zakroff, Aran T Mooney, Colin Wirth
    Abstract:

    Chronic embryonic exposure to ocean acidification (OA) has been shown to degrade the aragonitic statolith of paralarval squid, Doryteuthis pealeii, a key structure for their swimming behavior. This study examined if day-of-hatching paralarval D. pealeii from eggs reared under chronic OA demonstrated measurable impairments to swimming activity and control. This required the development of a novel, cost-effective, and robust method for 3D motion tracking and analysis. Squid eggs were reared in pCO2 levels in a dose-dependent manner ranging from 400 to 2200 ppm. Initial 2D experiments showed paralarvae in higher acidification environments spent more time at depth. In 3D experiments, velocity, particularly positive and negative vertical velocities, significantly decreased from 400 to 1000 ppm pCO2, but showed non-significant decreases at higher concentrations. Activity and horizontal velocity decreased linearly with increasing pCO2, indicating a subtle impact to paralarval energetics. Patterns may have been obscured by notable individual variability in the paralarvae. Responses were also seen to vary between trials on cohort or potentially annual scales. Overall, paralarval swimming appeared resilient to OA, with effects being slight. The newly developed 3D tracking system provides a powerful and accessible method for future studies to explore similar questions in the larvae of aquatic taxa.

Cronin, Thomas W. - One of the best experts on this subject based on the ideXlab platform.

  • An unexpected diversity of photoreceptor classes in the Longfin squid, Doryteuthis pealeii
    'MBLWHOI Library', 2015
    Co-Authors: Kingston, Alexandra C. N., Wardill, Trevor J., Hanlon, Roger T., Cronin, Thomas W.
    Abstract:

    Data are arranged into 12 Zip files, one for each figure (Figures 1 - 6) and one for each supporting figure (S1 - 6). Each Zip file includes the original images used for figures and supporting figures. Scale bars in all figures and supporting figures are 25μCephalopods are famous for their ability to change color and pattern rapidly for signaling and camouflage. They have keen eyes and remarkable vision, made possible by photoreceptors in their retinas. External to the eyes, photoreceptors also exist in parolfactory vesicles and some light organs, where they function using a rhodopsin protein that is identical to that expr essed in the retina. Furthermore, dermal chromatophore organs contain rhodopsin and other components of phototransduction (including retinochrome, a photoisomerase first found in the retina), suggesting that they are photoreceptive. In this study, we used a modified whole - mount immunohistochemical technique to explore rhodopsin and retinochrome expression in a number of tissues and organs in the longfin squid, Doryteuthis pealeii. We found that fin central muscles, hair cells (epithelial primary sensory neu rons), arm axial ganglia, and sucker peduncle nerves all express rhodopsin and retinochrome proteins. Our findings indicate that these animals possess an unexpected diversity of extraocular photoreceptors and suggest that extraocular photoreception using v isual opsins and visual phototransduction machinery is far more widespread throughout cephalopod tissues than previously recognized

  • An Unexpected Diversity of Photoreceptor Classes in the Longfin Squid, Doryteuthis pealeii.
    PLoS One, 2015
    Co-Authors: Alexandra C N Kingston, Hanlon, Roger T., Wardill Trevor, Cronin, Thomas W.
    Abstract:

    Cephalopods are famous for their ability to change color and pattern rapidly for signaling and camouflage. They have keen eyes and remarkable vision, made possible by photoreceptors in their retinas. External to the eyes, photoreceptors also exist in parolfactory vesicles and some light organs, where they function using a rhodopsin protein that is identical to that expressed in the retina. Furthermore, dermal chromatophore organs contain rhodopsin and other components of phototransduction (including retinochrome, a photoisomerase first found in the retina), suggesting that they are photoreceptive. In this study, we used a modified whole-mount immunohistochemical technique to explore rhodopsin and retinochrome expression in a number of tissues and organs in the longfin squid, Doryteuthis pealeii. We found that fin central muscles, hair cells (epithelial primary sensory neurons), arm axial ganglia, and sucker peduncle nerves all express rhodopsin and retinochrome proteins. Our findings indicate that these animals possess an unexpected diversity of extraocular photoreceptors and suggest that extraocular photoreception using visual opsins and visual phototransduction machinery is far more widespread throughout cephalopod tissues than previously recognized.This research was supported by the Office of Naval Research Basic Research Challenge grant number N00014-10-0989 to T.W.C and R.T.H and a Biotechnology and Biological Sciences Research Council (BBSRC) David Phillips Fellowship BB/L024667/1 to T.J.W. We gratefully acknowledge support from the Air Force Office of Scientific Research via grants numbered FA9550-09-0346 to R.T.H. and FA9550-12-1-0321 to T.W.C.This is the final version of the article. It first appeared from PLoS via http://dx.doi.org/10.1371/journal.pone.013538

  • An unexpected diversity of photoreceptor classes in the longfin squid, Doryteuthis pealeii
    'Public Library of Science (PLoS)', 2015
    Co-Authors: Kingston, Alexandra C. N., Wardill, Trevor J., Hanlon, Roger T., Cronin, Thomas W.
    Abstract:

    © The Author(s), 2015. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in PLoS One 10 (2015): e0135381, doi:10.1371/journal.pone.0135381.Cephalopods are famous for their ability to change color and pattern rapidly for signaling and camouflage. They have keen eyes and remarkable vision, made possible by photoreceptors in their retinas. External to the eyes, photoreceptors also exist in parolfactory vesicles and some light organs, where they function using a rhodopsin protein that is identical to that expressed in the retina. Furthermore, dermal chromatophore organs contain rhodopsin and other components of phototransduction (including retinochrome, a photoisomerase first found in the retina), suggesting that they are photoreceptive. In this study, we used a modified whole-mount immunohistochemical technique to explore rhodopsin and retinochrome expression in a number of tissues and organs in the longfin squid, Doryteuthis pealeii. We found that fin central muscles, hair cells (epithelial primary sensory neurons), arm axial ganglia, and sucker peduncle nerves all express rhodopsin and retinochrome proteins. Our findings indicate that these animals possess an unexpected diversity of extraocular photoreceptors and suggest that extraocular photoreception using visual opsins and visual phototransduction machinery is far more widespread throughout cephalopod tissues than previously recognized.This research was supported by the Office of Naval Research Basic Research Challenge grant number N00014-10-0989 to TWC and RTH and a Biotechnology and Biological Sciences Research Council (BBSRC) David Phillips Fellowship BB/L024667/1 to TJW. The authors gratefully acknowledge support from the Air Force Office of Scientific Research via grants numbered FA9550-09-0346 to RTH. and FA9550-12-1-0321 to TWC

  • Visual phototransduction components in cephalopod chromatophores suggest dermal photoreception
    2015
    Co-Authors: Kingston, Alexandra C. N., Hanlon, Roger T., Kuzirian, Alan M., Cronin, Thomas W.
    Abstract:

    Author Posting. © The Author(s), 2015. This is the author's version of the work. It is posted here by permission of The Company of Biologists for personal use, not for redistribution. The definitive version was published in Journal of Experimental Biology 218 (2015): 1596-1602, doi: 10.1242/​jeb.117945.Cephalopod molluscs are renowned for their colorful and dynamic body patterns, produced by an assemblage of skin components that interact with light. These may include iridophores, leucophores, chromatophores, and (in some species) photophores. Here, we present molecular evidence suggesting that cephalopod chromatophores, small dermal pigmentary organs that reflect various colors of light, are photosensitive. RT-PCR revealed the presence of transcripts encoding rhodopsin and retinochrome within the retinas and skin of the squid Doryteuthis pealeii, and the cuttlefish Sepia officinalis and Sepia latimanus. In D. pealeii, Gqα and squid TRP channel transcripts were present in the retina and in all dermal samples. Rhodopsin, retinochrome, and Gqα transcripts were also found in RNA extracts from dissociated chromatophores isolated from D. pealeii dermal tissues. In D. pealeii, immunohistochemical staining labeled rhodopsin, retinochrome, and Gqα proteins in several chromatophore components, including pigment cell membranes, radial muscle fibers, and sheath cells. This is the first evidence that cephalopod dermal tissues, and specifically chromatophores, may possess the requisite combination of molecules required to respond to light.This research was supported by the Office of Naval Research Basic Research Challenge [grant number N00014-10-0989] via a subcontract to T.W.C. and R.T.H.2016-05-1

Alexandra C N Kingston - One of the best experts on this subject based on the ideXlab platform.

  • visual phototransduction components in cephalopod chromatophores suggest dermal photoreception
    The Journal of Experimental Biology, 2015
    Co-Authors: Alexandra C N Kingston, Alan M Kuzirian, Roger T Hanlon, Thomas W Cronin
    Abstract:

    ABSTRACT Cephalopod mollusks are renowned for their colorful and dynamic body patterns, produced by an assemblage of skin components that interact with light. These may include iridophores, leucophores, chromatophores and (in some species) photophores. Here, we present molecular evidence suggesting that cephalopod chromatophores – small dermal pigmentary organs that reflect various colors of light – are photosensitive. RT-PCR revealed the presence of transcripts encoding rhodopsin and retinochrome within the retinas and skin of the squid Doryteuthis pealeii , and the cuttlefish Sepia officinalis and Sepia latimanus . In D. pealeii , G qα and squid TRP channel transcripts were present in the retina and in all dermal samples. Rhodopsin, retinochrome and G qα transcripts were also found in RNA extracts from dissociated chromatophores isolated from D. pealeii dermal tissues. Immunohistochemical staining labeled rhodopsin, retinochrome and G qα proteins in several chromatophore components, including pigment cell membranes, radial muscle fibers, and sheath cells. This is the first evidence that cephalopod dermal tissues, and specifically chromatophores, may possess the requisite combination of molecules required to respond to light.

  • An Unexpected Diversity of Photoreceptor Classes in the Longfin Squid, Doryteuthis pealeii.
    PLoS One, 2015
    Co-Authors: Alexandra C N Kingston, Hanlon, Roger T., Wardill Trevor, Cronin, Thomas W.
    Abstract:

    Cephalopods are famous for their ability to change color and pattern rapidly for signaling and camouflage. They have keen eyes and remarkable vision, made possible by photoreceptors in their retinas. External to the eyes, photoreceptors also exist in parolfactory vesicles and some light organs, where they function using a rhodopsin protein that is identical to that expressed in the retina. Furthermore, dermal chromatophore organs contain rhodopsin and other components of phototransduction (including retinochrome, a photoisomerase first found in the retina), suggesting that they are photoreceptive. In this study, we used a modified whole-mount immunohistochemical technique to explore rhodopsin and retinochrome expression in a number of tissues and organs in the longfin squid, Doryteuthis pealeii. We found that fin central muscles, hair cells (epithelial primary sensory neurons), arm axial ganglia, and sucker peduncle nerves all express rhodopsin and retinochrome proteins. Our findings indicate that these animals possess an unexpected diversity of extraocular photoreceptors and suggest that extraocular photoreception using visual opsins and visual phototransduction machinery is far more widespread throughout cephalopod tissues than previously recognized.This research was supported by the Office of Naval Research Basic Research Challenge grant number N00014-10-0989 to T.W.C and R.T.H and a Biotechnology and Biological Sciences Research Council (BBSRC) David Phillips Fellowship BB/L024667/1 to T.J.W. We gratefully acknowledge support from the Air Force Office of Scientific Research via grants numbered FA9550-09-0346 to R.T.H. and FA9550-12-1-0321 to T.W.C.This is the final version of the article. It first appeared from PLoS via http://dx.doi.org/10.1371/journal.pone.013538

  • An Unexpected Diversity of Photoreceptor Classes in the Longfin Squid, Doryteuthis pealeii.
    Public Library of Science (PLoS), 2026
    Co-Authors: Alexandra C N Kingston, Roger T Hanlon, Trevor J Wardill, Thomas W Cronin
    Abstract:

    Cephalopods are famous for their ability to change color and pattern rapidly for signaling and camouflage. They have keen eyes and remarkable vision, made possible by photoreceptors in their retinas. External to the eyes, photoreceptors also exist in parolfactory vesicles and some light organs, where they function using a rhodopsin protein that is identical to that expressed in the retina. Furthermore, dermal chromatophore organs contain rhodopsin and other components of phototransduction (including retinochrome, a photoisomerase first found in the retina), suggesting that they are photoreceptive. In this study, we used a modified whole-mount immunohistochemical technique to explore rhodopsin and retinochrome expression in a number of tissues and organs in the longfin squid, Doryteuthis pealeii. We found that fin central muscles, hair cells (epithelial primary sensory neurons), arm axial ganglia, and sucker peduncle nerves all express rhodopsin and retinochrome proteins. Our findings indicate that these animals possess an unexpected diversity of extraocular photoreceptors and suggest that extraocular photoreception using visual opsins and visual phototransduction machinery is far more widespread throughout cephalopod tissues than previously recognized