The life history of the spiny dogfish (Squalus acanthias) and the vitamin A. values of dogfish liver oil
The Life-History of the Spiny Dogfish (Squalus acanthias) and the Vitamin A Values of Dogfish Liver Oil Abstract -- Introduction -- Materials and methods -- General life-history of Squalus acanthias. Sizes of dogfish caught and onset of sexual maturity -- Sex ratio -- Growth and reproduction. Embryo...
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Department of Natural Resources
1944
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Online Access: | http://collections.mun.ca/cdm/ref/collection/cns2/id/127673 |
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ftmemorialunivdc:oai:collections.mun.ca:cns2/127673 2023-12-31T10:19:30+01:00 The life history of the spiny dogfish (Squalus acanthias) and the vitamin A. values of dogfish liver oil Research bulletin (fisheries) (Newfoundland. Department of Natural Resources) no. 15 Templeman, Wilfred, 1908- Newfoundland. Department of Natural Resources 1944 1 digital resource (102 pages) illustrations (black and white) maps (black and white) image/jpeg; application/pdf http://collections.mun.ca/cdm/ref/collection/cns2/id/127673 eng eng Department of Natural Resources St. John's, Newfoundland and Labrador (69.34 MB) -- https://dai.mun.ca/PDFs/cns/TheLifeHistoryoftheSpinyDogfishSqualusacanthiasandtheVitaminAValuesofDogfishLiverOil.pdf Centre for Newfoundland Studies - Digitized Books 2 2 QL 615 N2 A1 no.15 http://collections.mun.ca/cdm/ref/collection/cns2/id/127673 Print text held in the Centre for Newfoundland Studies. Memorial University of Newfoundland. Centre for Newfoundland Studies Dogfish Text Book 1944 ftmemorialunivdc 2023-12-04T11:29:30Z The Life-History of the Spiny Dogfish (Squalus acanthias) and the Vitamin A Values of Dogfish Liver Oil Abstract -- Introduction -- Materials and methods -- General life-history of Squalus acanthias. Sizes of dogfish caught and onset of sexual maturity -- Sex ratio -- Growth and reproduction. Embryos in uteri -- Growth curve of young -- Growth. Growth of male and female embryos in uteri -- Growth of male and female dogfish after birth -- Calculations of growth of dogfish from European data -- Application of European data to growth of Squalus acanthias on the North American coast -- Other criteria of dogfish growth -- Weight -- Reproduction. Length of female dogfish versus total number of large yellow eggs in both ovaries -- Length of female dogfish versus total number of tiny embryos in both uteri -- Length of female dogfish versus total number of large embryos in both uteri. Discussion -- Relation of length of parent dogfish to size of large embryos, of tiny embryos, of ovarian eggs and of uterine eggs -- Number of large yellow eggs in each ovary and the number of young in each uterus -- Development of ovarian eggs -- The egg-case and its contents -- Relations between length of adult, embryo size and yolk-sac size -- Sources of food, water, etc., in Squalus embryos -- The food of the dogfish -- Relation of sexual maturity of male dogfish to length of claspers -- Relation of sexual maturity of female dogfish to the length and to the width of the uterus -- Dogfish appearances and migrations. Earliest date of capture of dogfish in Newfoundland and Labrador, 1942 -- Months during which dogfish are present -- Months during which dogfish are usually plentiful -- Additional information on movements of dogfish -- Indications of movements of mature and of immature male and female dogfish as shown by our captures off St. John's -- Tagging -- Minimizing the dogfish pest -- Quantities of dogfish present and their uses. Abundance -- Dogfish as human food -- Other uses of dogfish flesh -- Dogfish livers and liver oil. ... Book Newfoundland Newfoundland studies spiny dogfish Squalus acanthias Memorial University of Newfoundland: Digital Archives Initiative (DAI) |
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Open Polar |
collection |
Memorial University of Newfoundland: Digital Archives Initiative (DAI) |
op_collection_id |
ftmemorialunivdc |
language |
English |
topic |
Dogfish |
spellingShingle |
Dogfish Templeman, Wilfred, 1908- The life history of the spiny dogfish (Squalus acanthias) and the vitamin A. values of dogfish liver oil |
topic_facet |
Dogfish |
description |
The Life-History of the Spiny Dogfish (Squalus acanthias) and the Vitamin A Values of Dogfish Liver Oil Abstract -- Introduction -- Materials and methods -- General life-history of Squalus acanthias. Sizes of dogfish caught and onset of sexual maturity -- Sex ratio -- Growth and reproduction. Embryos in uteri -- Growth curve of young -- Growth. Growth of male and female embryos in uteri -- Growth of male and female dogfish after birth -- Calculations of growth of dogfish from European data -- Application of European data to growth of Squalus acanthias on the North American coast -- Other criteria of dogfish growth -- Weight -- Reproduction. Length of female dogfish versus total number of large yellow eggs in both ovaries -- Length of female dogfish versus total number of tiny embryos in both uteri -- Length of female dogfish versus total number of large embryos in both uteri. Discussion -- Relation of length of parent dogfish to size of large embryos, of tiny embryos, of ovarian eggs and of uterine eggs -- Number of large yellow eggs in each ovary and the number of young in each uterus -- Development of ovarian eggs -- The egg-case and its contents -- Relations between length of adult, embryo size and yolk-sac size -- Sources of food, water, etc., in Squalus embryos -- The food of the dogfish -- Relation of sexual maturity of male dogfish to length of claspers -- Relation of sexual maturity of female dogfish to the length and to the width of the uterus -- Dogfish appearances and migrations. Earliest date of capture of dogfish in Newfoundland and Labrador, 1942 -- Months during which dogfish are present -- Months during which dogfish are usually plentiful -- Additional information on movements of dogfish -- Indications of movements of mature and of immature male and female dogfish as shown by our captures off St. John's -- Tagging -- Minimizing the dogfish pest -- Quantities of dogfish present and their uses. Abundance -- Dogfish as human food -- Other uses of dogfish flesh -- Dogfish livers and liver oil. ... |
author2 |
Newfoundland. Department of Natural Resources |
format |
Book |
author |
Templeman, Wilfred, 1908- |
author_facet |
Templeman, Wilfred, 1908- |
author_sort |
Templeman, Wilfred, 1908- |
title |
The life history of the spiny dogfish (Squalus acanthias) and the vitamin A. values of dogfish liver oil |
title_short |
The life history of the spiny dogfish (Squalus acanthias) and the vitamin A. values of dogfish liver oil |
title_full |
The life history of the spiny dogfish (Squalus acanthias) and the vitamin A. values of dogfish liver oil |
title_fullStr |
The life history of the spiny dogfish (Squalus acanthias) and the vitamin A. values of dogfish liver oil |
title_full_unstemmed |
The life history of the spiny dogfish (Squalus acanthias) and the vitamin A. values of dogfish liver oil |
title_sort |
life history of the spiny dogfish (squalus acanthias) and the vitamin a. values of dogfish liver oil |
publisher |
Department of Natural Resources |
publishDate |
1944 |
url |
http://collections.mun.ca/cdm/ref/collection/cns2/id/127673 |
genre |
Newfoundland Newfoundland studies spiny dogfish Squalus acanthias |
genre_facet |
Newfoundland Newfoundland studies spiny dogfish Squalus acanthias |
op_source |
Print text held in the Centre for Newfoundland Studies. Memorial University of Newfoundland. Centre for Newfoundland Studies |
op_relation |
(69.34 MB) -- https://dai.mun.ca/PDFs/cns/TheLifeHistoryoftheSpinyDogfishSqualusacanthiasandtheVitaminAValuesofDogfishLiverOil.pdf Centre for Newfoundland Studies - Digitized Books 2 2 QL 615 N2 A1 no.15 http://collections.mun.ca/cdm/ref/collection/cns2/id/127673 |
_version_ |
1786825882845839360 |