Relevant bibliographies by topics / Octopus dofleini

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters

Academic literature on the topic 'Octopus dofleini'

Author: Grafiati
Published: 4 June 2021
Last updated: 15 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Octopus dofleini.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Octopus dofleini"

1

Scheel, D. "Sea-surface temperature used to predict the relative density of giant Pacific octopuses (Enteroctopus dofleini) in intertidal habitats of Prince William Sound, Alaska." Marine and Freshwater Research 66, no. 10 (2015): 866. http://dx.doi.org/10.1071/mf14197.

Full text
Abstract:
Productivity linked to upwelling strength is an important environmental factor affecting the production and dynamics of octopus populations. This often takes the form of a negative relationship between octopus abundance and sea-surface temperatures (SST). Enteroctopus dofleini (giant Pacific octopuses) is caught as by-catch in several fisheries, but management for octopuses is data-poor. Visual surveys (in Prince William Sound (PWS) and Puget Sound) showed significant negative correlations of octopus counts with winter SST over the previous 30 months in the waters of eastern Gulf of Alaska, as expected on the basis of life-history parameters. In PWS, local octopus densities varied more than six-fold during the study, and correlations with SST accounted for 48–61% of the variance in counts. Octopus by-catch datasets were not similarly significantly correlated with SST. The negative correlation with SST suggests that octopus populations are influenced by factors regulating marine productivity during larval stages of life history far from the site of recruitment to benthic habitats. Targeted visual surveys for E. dofleini may be more predictable than by-catch statistics, and may be better estimators of variation in octopus abundance.
APA, Harvard, Vancouver, ISO, and other styles
2

Mather, Jennifer A., and Roland C. Anderson. "Exploration, play and habituation in octopuses (Octopus dofleini)." Journal of Comparative Psychology 113, no. 3 (1999): 333–38. http://dx.doi.org/10.1037/0735-7036.113.3.333.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

van Holde, K. E., Karen Miller, Eric Schabtach, and Louis Libertini. "Assembly of Octopus dofleini hemocyanin." Journal of Molecular Biology 217, no. 2 (January 1991): 307–21. http://dx.doi.org/10.1016/0022-2836(91)90545-h.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Miller, Karen I. "Oxygen equilibria of Octopus dofleini hemocyanin." Biochemistry 24, no. 17 (August 1985): 4582–86. http://dx.doi.org/10.1021/bi00338a015.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Scheel, D., and C. Johnson. "Sea-surface temperatures predict targeted visual surveys of octopus abundance." Marine and Freshwater Research 72, no. 9 (2021): 1321. http://dx.doi.org/10.1071/mf20318.

Full text
Abstract:
In upwelling systems around the world, octopus abundance is forecast by marine productivity linked to upwelling strength, often indicated by sea-surface temperatures. Climate change may disrupt populations of marine animals that are linked to such temperature-dependent events. We analysed the relationship of the abundance of giant Pacific octopuses (Enteroctopus dofleini) to Gulf of Alaska and Washington State water temperatures. Abundance was measured in targeted visual surveys in Prince William Sound, Alaska, over the period 1995–2016 and from REEF.org diver surveys in Washington State from 2003 to 2019. Octopus counts from both survey programs had significant negative correlations with water temperatures over the previous 2.5–4 years. Water temperature accounted for from 0.41 to 0.71 of the variance (R2) in octopus abundance in eastern Gulf of Alaska waters located in ocean currents up-stream of the survey areas, and up to 0.81 of the variance in Washington State waters. These negative correlations provide a possible predictive index for octopus abundance as measured by targeted visual surveys. These methods may be useful tools in management of octopuses and indicate impacts of climate change on North Pacific coastal marine ecosystems.
APA, Harvard, Vancouver, ISO, and other styles
6

SHADWICK, ROBERT E., JOHN M. GOSLINE, and WILLIAM K. MILSON. "Arterial Haemodynamics in the Cephalopod Mollusc, Octopus Dofleini." Journal of Experimental Biology 130, no. 1 (July 1, 1987): 87–106. http://dx.doi.org/10.1242/jeb.130.1.87.

Full text
Abstract:
Simultaneous measurements of blood pressure and blood flow were made in the dorsal aorta of the cephalopod Octopus dofleini Wülker. In resting animals the heart rate varied from 8.5 to 14 beats min−1, while aortic pressure typically ranged from about 2.5 kPa at end diastole to 5.5 kPa at peak systole. Blood flow rate varied with pressure, averaging 0.9 ml s−1, with peak flow rates of 1.4–2.8 ml s−1. A slow asymptotic decline in both pressure and flow during the 2- to 4-s diastolic period indicated that the aorta functions as an elastic reservoir, as previously predicted. Aortic impedance spectra were derived from digitized pressure and flow data. The impedance amplitude decreased continuously with increasing frequency, while the impedance phase was always negative. These results are consistent with a two-element Windkessel model of the arterial system. The apparent pressure wave velocity, determined from transit times of pressure pulses in vivo, was > 10 m s−1. This was much higher than the intrinsic wave velocity we predicted from in vitro measurements of aortic elasticity. This anomaly occurred because the length of the aorta represented less than 1 % of the wavelength of the fundamental pulse frequency, due to the low heart rate in this species. Consequently, arterial haemodynamics in O. dofleini are dominated by strong wave reflections, but do not exhibit other wave propagation effects which are typical of mammalian circulatory systems. Thus, the simple Windkessel model adequately describes the arterial circulation of this species of cephalopod.
APA, Harvard, Vancouver, ISO, and other styles
7

Anderson, Roland C., Ronald Shimek, James A. Cosgrove, and Steve Berthinier. "Giant Pacific Octopus, Enteroctopus dofleini, Attacks on Divers." Canadian Field-Naturalist 121, no. 4 (October 1, 2007): 423. http://dx.doi.org/10.22621/cfn.v121i4.517.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Rigby, P. Robin, and Yasunori Sakurai. "Multidimensional Tracking of Giant Pacific Octopuses in Northern Japan Reveals Unexpected Foraging Behaviour." Marine Technology Society Journal 39, no. 1 (March 1, 2005): 64–67. http://dx.doi.org/10.4031/002533205787521730.

Full text
Abstract:
Most marine populations are in decline (Pauly, 2000; Leon, 2003) and reports of stable or increasing stocks are viewed with some scepticism (Myers and Worm, 2003). Compensation for decreasing fish stocks by cephalopod populations has been theorized and reported (O'Dor, 1998; Chotiyaputta et al., 2002). Around Hokkaido Island (northern Japan), catch per unit effort (CPUE) of Enteroctopus dofleini is relatively stable (Hokkaido Fisheries Annual Report, 1986-2001). Decreasing inter-specific competition for food, reduced predation pressure by large fishes and a prevailing temperature regime are possible factors in the stability of the E dofleini catch rate; but so is the flexible behaviour of octopuses. Neural and behaviour studies (Young, 1961; Mather, 1994; Yamazaki et al., 2002) have alluded to the benefits of the adaptability of octopus behaviour, but no suggestions are as succinct as our findings during a recent radio acoustic tagging study where tagged octopuses stayed in smaller home ranges for longer periods of time than expected (Mather et al., 1985) while feeding off of a gill net. We propose that these findings have direct implications to understanding of the ecology of the species and are an example of why in situ monitoring provided by Radio Acoustic Positioning (RAP) technology is an essential part of the planning, and implantation of regional management plans and the development and monitoring of marine protected areas.
APA, Harvard, Vancouver, ISO, and other styles
9

Seeley, Kathryn E., Leigh A. Clayton, Catherine A. Hadfield, Dillon Muth, Joseph L. Mankowski, and Kathleen M. Kelly. "RETROSPECTIVE REVIEW OF MORTALITY IN GIANT PACIFIC OCTOPUS (ENTEROCTOPUS DOFLEINI)." Journal of Zoo and Wildlife Medicine 47, no. 1 (March 2016): 271–74. http://dx.doi.org/10.1638/2014-0134.1.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Lamy, Josette, Michele Leclerc, Pierre Yves Sizaret, Jean Lamy, Karen I. Miller, Reginald McParland, and K. E. Van Holde. "Octopus dofleini hemocyanin: structure of the seven-domain polypeptide chain." Biochemistry 26, no. 12 (June 16, 1987): 3509–18. http://dx.doi.org/10.1021/bi00386a039.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Octopus dofleini"

1

Cosgrove, James Albert. "Aspects of the natural history of Octopus dofleini, the giant Pacific octopus." Thesis, 1987. http://hdl.handle.net/1828/12155.

Full text
Abstract:
A two part project spanning four and one half years was designed to investigate a number of aspects of the natural history of Octopus dofleini in the Northeast Pacific. The tag-release recapture (Part I) involved weekly SCUBA dives, during daylight hours, at three sites on Southern Vancouver Island, British Columbia, Canada. A total of 320 octopuses were sighted during 616 dives (Part I) and 151 of those octopuses were tagged or recaptured. The ratio of dives per octopus sighted was 1.93:1 and the ratio of dives per octopus tagged or recaptured was 4.08:1. A total of 98 octopuses were tagged (Part I) and 30 of those octopuses were recaptured two or more times for a recapture rate of 30.61%. Statistical analysis of data weighted to provide uniform effort showed Site 1 (Tanner Rock) to have a significantly greater number of large octopuses while Site 2 (Tozier Rock) had a significantly greater number of very small octopuses. An analysis of the data on octopus sex ratios found no significant difference between the number of males and females at each site even though there had been a significant difference in the ratio within Site 2. Analysis of data on annual distribution of octopus body weight combined with the results from the recapture of individual octopuses led to the proposal of a four year lifespan for female Octopus dofleini and an undetermined, but longer, lifespan for males of the species. An examination of the data on octopus movement showed that a peak number of small octopuses (approximately 250 g) appeared at the sites in February. The evidence showed that over the next 19 to 22 months the octopuses grew from approximately 250 grams to a pre adult body weight of 13.8 kg for males (in September) and 14.7 kg for females (in December). No octopuses between 16 and 19.5 kg were captured suggesting a movement of octopuses of that body weight away from the sites. Small numbers of octopuses weighing between 19.5 kg and 28 kg were captured mainly during the first half of the year. An analysis of octopus position data showed that Octopus dofleini does not maintain a constant distance from its nearest neighbour. Nearest neighbour distance was not significantly influenced by the size or sex of the neighbour nor by changes in water temperature. A highly significant correlation was found between estimated den volume and octopus body weight. There were no significant relationships between den surroundings, number of exits, den type and den depth when compared to den usage suggesting that Octopus dofleini is an opportunistic animal using whatever shelter of appropriate volume it discovers. The major food item at all sites as determined by midden heap contents was the Red Rock Crab, Cancer productus. An examination of the physical condition of each octopus captured revealed 21.2% of the animals had either scars or amputated arms or both. Correlations examining the relationships between water temperature and growth rate, body weight, sex and nearest neighbour distance were nonsignificant. Part 11 of the project was the physical measuring and describing of each den at each site. During the 126 SCUBA dives done another 127 octopuses were sighted. As octopuses were captured only when it was necessary to examine the inside of the den there were only 11 octopuses captured during the second part of the project. In total, 447 octopuses were sighted during 742 dives. This results in an effort per octopus sighted of 1.66 dives per octopus.
Graduate
APA, Harvard, Vancouver, ISO, and other styles
2

Lang, Walter H. "CDNA cloning and sequencing of Octopus dofleini hemocyanin /." 1990. http://hdl.handle.net/1957/14155.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Books on the topic "Octopus dofleini"

1

Mike, Bostock, ed. Gentle giant octopus. London: Walker Books, 1998.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Mike, Bostock, ed. Gentle giant octopus. London: Walker, 2000.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Wallace, Karen. Gentle giant octopus. Cambridge, Mass: Candlewick Press, 1998.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Lang, Walter H. CDNA cloning and sequencing of Octopus dofleini hemocyanin. 1990.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

Wallace, Karen. Gentle Giant Octopus: Read and Wonder. Candlewick, 2002.

Find full text
APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Octopus dofleini"

1

Takagi, Takashi. "Amino Acid Sequence of the C-Terminal Domain of Octopus (Paroctopus dofleini dofleini) Hemocyanin." In Invertebrate Oxygen Carriers, 259–62. Berlin, Heidelberg: Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-642-71481-8_46.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Lamy, J., J. N. Lamy, M. Leclerc, S. Compin, K. I. Miller, and K. E. van Holde. "Preliminary Results on the Structure of Octopus Dofleini Hemocyanin." In Invertebrate Oxygen Carriers, 231–34. Berlin, Heidelberg: Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-642-71481-8_40.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Miller, Karen I., and K. E. van Holde. "Oxygen-Linked Dissociation and Oxygen Binding by Subunits of Octopus Dofleini Hemocyanin." In Invertebrate Oxygen Carriers, 417–20. Berlin, Heidelberg: Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-642-71481-8_69.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Octopus dofleini' for particular source types:
Journal articles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography