Squid Fishing: from Hook to Plate
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Seasonal and Size-Based Predation on Two Species of Squid by Four Fish
605 Abstract-Longfin inshore (Loligo Seasonal and size-based predation on pealeii) and northern shortfin (lllex illecebrosus) squids are considered two species of squid by four fish predators important prey species in the North west Atlantic shelf ecosystem. The on the Northwest Atlantic continental shelf diets of four major squid predators, bluefish (Pomatomus saltatrix), goose Michelle D. Staudinger fish (Lophius americanus), silver hake (Merluccius bilinearis), and summer Department of Natural Resources Conservation flounder (Paralichthys dentatus), were 160 Holdsworth Way examined for seasonal and size-based University of Massachusetts, Amherst changes in feeding habits. Summer Amherst, Massachusetts 01003-9285 and winter, two time periods largely Email address: [email protected] absent from previous evaluations, were found to be the most impor tant seasons for predation on squid, and are also the periods when the majority of squid are landed by the regional fishery. Bluefish >450 mm, silver hake >300 mm, and summer Global depletion of marine predators significant predators of squid (Bow flounder >400 mm were all found has had dramatic effects on ecosys man et al., 2000). Squid represented to be significant predators of squid. tem structure and function (May et between 17% and 95% of the total These same size fish correspond to al., 1979; Jackson et al., 2001; Pauly mass consumed by these four finfish age classes currently targeted for et al., 2002). In many systems, the regionally. Dramatic changes in stock biomass expansion by management ramifications of such changes may not abundance and population structure committees. This study highlights be fully realized. Groundfish declines have occurred since specimens for the importance of understanding how have been linked to simultaneous Bowman et al.'s study were collect squid and predator interactions vary increases in cephalopod landings temporally and with changes in com ed 25-45 years ago. -
Reconstruction of Original Body Size and Estimation of Allometric
101 Reconstruction of original body size tie length in squid) in population and other types of surveys, information and estimation of allometric relationships on total length may not always be for the Iongtin inshore squid <Loligo pealeit1 readily available. Therefore, knowl edge of allometric relationships may and northern shortfin squid (///ex il/ecebrosus> be useful to. accurately assess trophic interactions and predator-prey rela Michelle D. Staudinger' tionships. For the majority of ceph alopod species, there are currently 1 Francis Juanes no predictive equations to estimate Suzanne Carlson2 total length from mantle length and Email address for contact author: [email protected] to account for variability in growth. 1 Department of Natural Resources Conservation To improve descriptions of the feed University of Massachusetts Amherst ing habits of teuthophagous preda Amherst, Massachusetts, 01003-9285 tors and to increase the number of 2 School of Natural Science evaluations of size-based predation Hampshire CoRege on cephalopod prey we present 1) pre Amherst, Massachusetts, 01002 dictive equations for reconstructing original prey size and 2) allometric relationships of mantle length to total body length for the two most common species of cephalopods in the Northwest Atlantic Ocean, L. pealeii Quantification of predator-prey body mammals (Gannon et al., 1997; Wil and I. illecebrosus. size relationships is essential to under liams, 1999). standing trophic dynamics in marine As with the bones and otoliths of ecosystems. Prey lengths recovered prey fish, cephalopod beaks are often Materials and methods from predator stomachs help deter recovered from predator stomachs mine the sizes of prey most influential and may be used for identification of Loligo pealeii were collected by otter in supporting predator growth and prey species and the reconstruction trawl from coastal waters off Mas to ascertain size-specific effects of of original prey body size (Clarke, sachusetts during the months of May natural mortality on prey populations 1986). -
Diet Analysis of Stranded Bottlenose Dolphins (<I>Tursiops Truncatus</I
Old Dominion University ODU Digital Commons Biological Sciences Theses & Dissertations Biological Sciences Spring 2020 Diet Analysis of Stranded Bottlenose Dolphins (Tursiops truncatus) in Virginia Kristen Marie Volker Old Dominion University, [email protected] Follow this and additional works at: https://digitalcommons.odu.edu/biology_etds Part of the Biology Commons, Ecology and Evolutionary Biology Commons, and the Marine Biology Commons Recommended Citation Volker, Kristen M.. "Diet Analysis of Stranded Bottlenose Dolphins (Tursiops truncatus) in Virginia" (2020). Master of Science (MS), Thesis, Biological Sciences, Old Dominion University, DOI: 10.25777/6bas-rj82 https://digitalcommons.odu.edu/biology_etds/113 This Thesis is brought to you for free and open access by the Biological Sciences at ODU Digital Commons. It has been accepted for inclusion in Biological Sciences Theses & Dissertations by an authorized administrator of ODU Digital Commons. For more information, please contact [email protected]. DIET ANALYSIS OF STRANDED BOTTLENOSE DOLPHINS (TURSIOPS TRUNCATUS) IN VIRGINIA by Kristen Marie Volker B.S. December 2008, University of New England A Thesis Submitted to the Faculty of Old Dominion University in Partial Fulfillment of the Requirements for the Degree of MASTER OF SCIENCE BIOLOGY OLD DOMINION UNIVERSITY MAY 2020 Approved by: Ian Bartol (Director) Holly Gaff (Member) Kent Carpenter (Member) Damon Gannon (Member) ABSTRACT DIET ANALYSIS OF STRANDED BOTTLENOSE DOLPHINS (TURSIOPS TRUNCATUS) IN VIRGINIA Kristen Marie Volker Old Dominion University, 2020 Director: Dr. Ian Bartol This study describes the diet of bottlenose dolphins (Tursiops truncatus) stranded in Virginia via stomach content analysis and considers factors such as proportion of numerical abundance and reconstructed mass, frequency of occurrence, average reconstructed prey size, prey diversity and quantity, and otolith degradation code. -
Loudness-Dependent Behavioral Responses and Habituation to Sound by the Longfin Squid (Doryteuthis Pealeii)
1 2 Loudness-dependent behavioral responses and habituation to sound by the 3 longfin squid (Doryteuthis pealeii) 4 5 6 T. Aran Mooney1*, Julia E. Samson1, 2, Andrea D. Schlunk1 and Samantha Zacarias1 7 8 9 1Biology Department, Woods Hole Oceanographic Institution, Woods Hole, MA, 02543, USA 10 2Biology Department, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA 11 12 13 *Corresponding author: [email protected], (508) 289-2714 14 15 16 Keywords: noise, bioacoustics, soundscape, auditory scene, invertebrate 17 18 19 20 1 21 Abstract 22 Sound is an abundant cue in the marine environment, yet we know little regarding the 23 frequency range and levels which induce behavioral responses in ecologically key marine 24 invertebrates. Here we address the range of sounds that elicit unconditioned behavioral responses 25 in squid Doryteuthis pealeii, the types of responses generated, and how responses change over 26 multiple sound exposures. A variety of response types were evoked, from inking and jetting to 27 body pattern changes and fin movements. Squid responded to sounds from 80-1000 Hz, with 28 response rates diminishing at the higher and lower ends of this frequency range. Animals 29 responded to the lowest sound levels in the 200-400 Hz range. Inking, an escape response, was 30 confined to the lower frequencies and highest sound levels; jetting was more widespread. 31 Response latencies were variable but typically occurred after 0.36 s (mean) for jetting and 0.14 s 32 for body pattern changes; pattern changes occurred significantly faster. These results 33 demonstrate that squid can exhibit a range of behavioral responses to sound include fleeing, 34 deimatic and protean behaviors, all of which are associated with predator evasion. -
Geographic and Temporal Patterns in Size and Maturity of the Longfin Inshore Squid (Loligo Pealeii) Off the Northeastern United States
Geographic and temporal patterns in size and maturity of the longfin inshore squid (Loligo pealeii) off the northeastern United States Item Type article Authors Hatfield, Emma M.C.; Cadrin, Steven X. Download date 04/10/2021 18:55:59 Link to Item http://hdl.handle.net/1834/31057 200 Abstract–Analysis of 32 years of stan Geographic and temporal patterns dardized survey catches (1967–98) indi cated differential distribution patterns in size and maturity of the longfin inshore squid for the longfin inshore squid (Loligo pealeii) over the northwest Atlantic (Loligo pealeii) off the northeastern United States U.S. continental shelf, by geographic region, depth, season, and time of day. Emma M.C. Hatfield Catches were greatest in the Mid- Atlantic Bight, where there were sig Steven X. Cadrin nificantly greater catches in deep water Northeast Fisheries Science Center during winter and spring, and in National Marine Fisheries Service, NOAA shallow water during autumn. Body 166 Water Street size generally increased with depth Woods Hole, Massachusetts 02543 in all seasons. Large catches of juve Present address (for E.M.C. Hatfield): FRS Marine Laboratory niles in shallow waters off southern Victoria Road New England during autumn resulted Aberdeen AB11 9DB from inshore spawning observed during Scotland, United Kingdom late spring and summer; large propor E-mail address (for E. M. C. Hatfield): e.hatfi[email protected] tions of juveniles in the Mid-Atlantic Bight during spring suggest that sub stantial winter spawning also occurs. Few mature squid were caught in sur vey samples in any season; the major ity of these mature squid were cap tured south of Cape Hatteras during The longfin inshore squid, Loligo pea- mers, 1967; 1969; Serchuk and Rathjen, spring. -
Squid Giant Axon (Glia/Neurons/Secretion)
Proc. Nat. Acad. Sci. USA Vol. 71, No. 4, pp. 1188-1192, April 1974 Transfer of Newly Synthesized Proteins from Schwann Cells to the Squid Giant Axon (glia/neurons/secretion) R. J. LASEK*, H. GAINERt, AND R. J. PRZYBYLSKI* Marine Biological Laboratory, Woods Hole, Massachusetts 02543 Communicated by Walle J. H. Nauta, November 28, 1973 ABSTRACT The squid giant axon is presented as a teins synthesized in the Schwann cells surrounding the axon model for the study of macromolecular interaction be- tween cells in the nervous system. When the isolated giant are subsequently transferred into the axoplasm. axon was incubated in sea water containing [3Hjleucine MATERIALS AND METHODS for 0.5-5 hr, newly synthesized proteins appeared in the sheath and axoplasm as demonstrated by: (i) radioautogra- Protein synthesis was studied in squid giant axons obtained phy, (ii) separation of the -sheath and axoplasm by extru- from live squid which were kept in a sea tank and used within sion, and (iii) perfusion of electrically excitable axons. hr of obtained The absence of ribosomal RNA in the axoplasm [Lasek, 48 capture. The giant axons were by decapitat- R. J. et al. (1973) Nature 244, 162-165] coupled with other ing the squid and dissecting the axons under a stream of run- evidence indicates that the labeled proteins that are found ning sea water. The axons, 4-6 cm long, were tied with thread in the axoplasm originate in the Schwann cells surrounding at both ends, removed from the mantle, and cleaned of ad- the axon. Approximately 50%70 of the newly synthesized hering connective tissue in a petri dish filled with sea water Schwann cell proteins are transferred to the giant axon. -
Effects of Temperature on Escape Jetting in the Squid Loligo Opalescens
The Journal of Experimental Biology 203, 547–557 (2000) 547 Printed in Great Britain © The Company of Biologists Limited 2000 JEB2451 EFFECTS OF TEMPERATURE ON ESCAPE JETTING IN THE SQUID LOLIGO OPALESCENS H. NEUMEISTER*,§, B. RIPLEY*, T. PREUSS§ AND W. F. GILLY‡ Hopkins Marine Station of Stanford University, Department of Biological Science, 120 Ocean View Boulevard, Pacific Grove, 93950 CA, USA *Authors have contributed equally ‡Author for correspondence (e-mail: [email protected]) §Present address: Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY 10461, USA Accepted 19 November 1999; published on WWW 17 January 2000 Summary In Loligo opalescens, a sudden visual stimulus (flash) giant and non-giant motor axons in isolated nerve–muscle elicits a stereotyped, short-latency escape response that is preparations failed to show the effects seen in vivo, i.e. controlled primarily by the giant axon system at 15 °C. We increased peak force and increased neural activity at low used this startle response as an assay to examine the effects temperature. Taken together, these results suggest that of acute temperature changes down to 6 °C on behavioral L. opalescens is able to compensate escape jetting and physiological aspects of escape jetting. In free- performance for the effects of acute temperature reduction. swimming squid, latency, distance traveled and peak A major portion of this compensation appears to occur in velocity for single escape jets all increased as temperature the central nervous system and involves alterations in the decreased. In restrained squid, intra-mantle pressure recruitment pattern of both the giant and non-giant axon transients during escape jets increased in latency, duration systems. -
2,3-Bisphosphoglycerate (2,3-BPG)
11-cis retinal 5.4.2 achondroplasia 19.1.21 active transport, salt 3.4.19 2,3-bisphosphoglycerate 11.2.2 acid-base balance 18.3.34 activity cycle, flies 2.2.2 2,4-D herbicide 3.3.22, d1.4.23 acid coagulation cheese 15.4.36 activity rhythms, locomotor 7.4.2 2,6-D herbicide, mode of action acid growth hypothesis, plant cells actogram 7.4.2 3.2.22 3.3.22 acute mountain sickness 8.4.19 2-3 diphosphoglycerate, 2-3-DPG, acid hydrolases 15.2.36 acute neuritis 13.5.32 in RBCs 3.2.25 acid in gut 5.1.2 acute pancreatitis 9.3.24 2C fragments, selective weedkillers acid rain 13.2.10, 10.3.25, 4.2.27 acyltransferases 11.5.39 d1.4.23 1.1.15 Adams, Mikhail 12.3.39 3' end 4.3.23 acid rain and NO 14.4.18 adaptation 19.2.26, 7.2.31 3D formula of glucose d16.2.15 acid rain, effects on plants 1.1.15 adaptation, chemosensory, 3-D imaging 4.5.20 acid rain, mobilization of soil in bacteria 1.1.27 3-D models, molecular 5.3.7 aluminium 3.4.27 adaptation, frog reproduction 3-D reconstruction of cells 18.1.16 acid rain: formation 13.2.10 17.2.17 3-D shape of molecules 7.2.19 acid 1.4.16 adaptations: cereals 3.3.30 3-D shapes of proteins 6.1.31 acid-alcohol-fast bacteria 14.1.30 adaptations: sperm 10.5.2 3-phosphoglycerate 5.4.30 acidification of freshwater 1.1.15 adaptive immune response 5' end 4.3.23 acidification 3.4.27 19.4.14, 18.1.2 5-hydroxytryptamine (5-HT) 12.1.28, acidification, Al and fish deaths adaptive immunity 19.4.34, 5.1.35 3.4.27 d16.3.31, 5.5.15 6-aminopenicillanic acid 12.1.36 acidification, Al and loss of adaptive radiation 8.5.7 7-spot ladybird -
Ink from Longfin Inshore Squid, Doryteuthis Pealeii, As a Chemical and Visual Defense Against Two Predatory Fishes, Summer Floun
CORE Metadata, citation and similar papers at core.ac.uk Provided by Woods Hole Open Access Server Reference: Biol. Bull. 225: 152–160. (December 2013) © 2013 Marine Biological Laboratory Ink From Longfin Inshore Squid, Doryteuthis pealeii, as a Chemical and Visual Defense Against Two Predatory Fishes, Summer Flounder, Paralichthys dentatus, and Sea Catfish, Ariopsis felis CHARLES D. DERBY*, MIHIKA TOTTEMPUDI, TIFFANY LOVE-CHEZEM, AND LANNA S. WOLFE Neuroscience Institute and Department of Biology, Georgia State University, Atlanta, Georgia 30303; and The Marine Biological Laboratory, Woods Hole, Massachusetts 02543 Abstract. Chemical and visual defenses are used by many Introduction organisms to avoid being approached or eaten by predators. Anti-predatory defenses can be found in many forms An example is inking molluscs—including gastropods such throughout the animal kingdom, operating through a variety as sea hares and cephalopods such as squid, cuttlefish, and of sensory systems of predators, including olfactory, visual, octopus—which release a colored ink upon approach or and auditory (Ruxton et al., 2004; Caro, 2005; Eisner et al., attack. Previous work showed that ink can protect molluscs 2007). Some molluscs use ink as a chemical defense against through a combination of chemical, visual, and other ef- predators. Previous work on slow-moving inking mol- fects. In this study, we examined the effects of ink from luscs—sea hares, Aplysia spp.—revealed a variety of mol- longfin inshore squid, Doryteuthis pealeii, on the behavior ecules acting as chemical defenses through a variety of of two species of predatory fishes, summer flounder, mechanisms (Derby, 2007; Derby and Aggio, 2011). One Paralichthys dentatus, and sea catfish, Ariopsis felis. -
Effect of Fmrfamide on Voltage-Dependent Currents In
bioRxiv preprint doi: https://doi.org/10.1101/2020.09.29.318691; this version posted October 1, 2020. The copyright holder for this preprint (which was not certified by peer review) is the author/funder. All rights reserved. No reuse allowed without permission. A. Chrachri 1 Effect of FMRFamide on voltage-dependent currents in identified centrifugal 2 neurons of the optic lobe of the cuttlefish, Sepia officinalis 3 4 Abdesslam Chrachri 5 University of Plymouth, Dept of Biological Sciences, Drake Circus, Plymouth, PL4 6 8AA, UK and the Marine Biological Association of the UK, Citadel Hill, Plymouth 7 PL1 2PB, UK 8 Phone: 07931150796 9 Email: [email protected] 10 11 Running title: Membrane currents in centrifugal neurons 12 13 Key words: cephalopod, voltage-clamp, potassium current, calcium currents, sodium 14 current, FMRFamide. 15 16 Summary: FMRFamide modulate the ionic currents in identified centrifugal neurons 17 in the optic lobe of cuttlefish: thus, FMRFamide could play a key role in visual 18 processing of these animals. 19 - 1 - bioRxiv preprint doi: https://doi.org/10.1101/2020.09.29.318691; this version posted October 1, 2020. The copyright holder for this preprint (which was not certified by peer review) is the author/funder. All rights reserved. No reuse allowed without permission. A. Chrachri 20 Abstract 21 Whole-cell patch-clamp recordings from identified centrifugal neurons of the optic 22 lobe in a slice preparation allowed the characterization of five voltage-dependent 23 currents; two outward and three inward currents. The outward currents were; the 4- 24 aminopyridine-sensitive transient potassium or A-current (IA), the TEA-sensitive 25 sustained current or delayed rectifier (IK). -
Mackerel Closure Framework (Framework 12) ATLANTIC MACKEREL, SQUID, and BUTTERFISH FISHERY MANAGEMENT PLAN
Mackerel Closure Framework (Framework 12) ATLANTIC MACKEREL, SQUID, AND BUTTERFISH FISHERY MANAGEMENT PLAN Measures to Modify Atlantic Mackerel In-Season Closure Provisions Includes Draft Supplemental Environmental Assessment and Initial Regulatory Flexibility Analysis Prepared by the Mid-Atlantic Fishery Management Council (Council) in collaboration with the National Marine Fisheries Service (NMFS) Council Address NMFS Address Mid-Atlantic Fishery Management Council NMFS Greater Atlantic Regional Fisheries Office 800 North State Street, Suite 201 55 Great Republic Drive Dover, DE 19901 Gloucester, MA 01930 Submitted to NOAA: 1.0 EXECUTIVE SUMMARY AND TABLE OF CONTENTS This supplemental environmental assessment (SEA) updates the attached previously approved Environmental Assessment (EA) for: “Specifications and Management Measures For: Atlantic Mackerel (2016-2018, Including River Herring and Shad Cap); Butterfish Mesh Rules; and Longfin Squid Pre- Trip Notification System (PTNS)” (also described in this document as the “2016-2018 Mackerel EA” or “original EA”) that analyzed the catch limits, commercial quotas, recreational harvest limits, and management measures (called specifications) for Atlantic Mackerel for the 2016-2018 fishing years. This document is not a stand-alone document, but rather a supplement and is intended to be utilized in conjunction with the previously approved EA (final rule 4/26/16: https://www.greateratlantic.fisheries.noaa.gov/regs/2016/April/16msb2016specsfr.pdf). Unless otherwise noted, the original EA prepared for this action and attached to this SEA remains applicable. Therefore, sections addressed in this supplement should be considered within the context of the original EA. In this Framework Adjustment to the Atlantic Mackerel, Squid, and Butterfish Fishery Management Plan (MSB FMP) the Council considers measures to modify the in-season closure provisions for the Atlantic mackerel (“mackerel” hereafter) fishery. -
NEUROMECHANICAL CHARACTERIZATION of BRAIN DAMAGE in RESPONSE to HEAD IMPACT and PATHOLOGICAL CHANGES Zolochevsky O
Series «Medicine». Issue 39 Fundamental researches UDC: 617.3:57.089.67:539.3 DOI: 10.26565/2313-6693-2020-39-01 NEUROMECHANICAL CHARACTERIZATION OF BRAIN DAMAGE IN RESPONSE TO HEAD IMPACT AND PATHOLOGICAL CHANGES Zolochevsky O. O., Martynenko O. V. Traumatic injuries to the central nervous system (brain and spinal cord) have received special attention because of their devastating socio-economical cost. Functional and morphological damage of brain is the most intricate phenomenon in the body. It is the major cause of disability and death. The paper involves constitutive modeling and computational investigations towards an understanding the mechanical and functional failure of brain due to the traumatic (head impact) and pathological (brain tumor) events within the framework of continuum damage mechanics of brain. Development of brain damage has been analyzed at the organ scale with the whole brain, tissue scale with white and gray tissue, and cellular scale with an individual neuron. The mechanisms of neurodamage growth have been specified in response to head impact and brain tumor. Swelling due to electrical activity of nervous cells under electrophysiological impairments, and elastoplastic deformation and creep under mechanical loading of the brain have been analyzed. The constitutive laws of neuromechanical behavior at large strains have been developed, and tension-compression asymmetry, as well as, initial anisotropy of brain tissue was taken into account. Implementation details of the integrated neuromechanical constitutive model including the Hodgkin-Huxley model for voltage into ABAQUS, ANSYS and in-house developed software have been considered in a form of the computer-based structural modeling tools for analyzing stress distributions over time in healthy and diseased brains, for neurodamage analysis and for lifetime predictions of diseased brains.