000 02606cam  2200385zi 4500
006m     o  d f      
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008190503s1980    nkca|||#ob   f000 0 eng d
040 |aCaOODSP|beng|erda|cCaOODSP
041 |aeng|bfre
043 |an-cn-nk
0861 |aFs70-8/80-43E-PDF
1001 |aWaddy, S. L., |eauthor.
24510|aDetermining size at maturity and predicting egg extrusion from cement gland development in Homarus americanus / |cS.L. Waddy and D.E. Aiken.
264 1|aSt. Andrews, New Brunswick : |bFisheries and Environmental Sciences, Department of Fisheries and Oceans, Biological Station, |c[1980].
300 |a1 online resource (6 pages, 2 unnumbered pages) : |billustrations.
336 |atext|btxt|2rdacontent
337 |acomputer|bc|2rdamedia
338 |aonline resource|bcr|2rdacarrier
4901 |aCAFSAC research document ; |v80/43
500 |aCaption title.
500 |aDigitized edtion from print [produced by Department of Fisheries and Oceans].
500 |a"This paper not to be cited without prior reference to the authors."
504 |aIncludes bibliographical references (pages 4-5).
5203 |a"In mature female Homarus, the abdominal cement glands wax and wane with ovarian development and oviposition. As the ova become mature, the glands become progressively more engorged. A simple technique for evaluating this cement gland development has been developed and related to ovarian maturity and egg extrusion. Both macroscopic and microscopic methods of assessing degree of cement gland development on the pleopod endopodites have been described. The technique enables field biologists to examine pleopods in situ to differentiate between a mature and an immature female prior to the spawning season and to determine whether a mature female will spawn in the current season. This will allow an accurate assessment of stage of maturation of any female prior to or during the egg-laying season and should greatly simplify determinations of size at maturity and numbers of mature females in the population."--Abstract.
546 |aIncludes abstract in French.
7001 |aAiken, D. E., |eauthor.
7101 |aCanada. |bDepartment of Fisheries and Oceans.
830#0|aCAFSAC research document (Canadian Atlantic Fisheries Scientific Advisory Committee)|v80/43|w(CaOODSP)9.869616
85640|qPDF|s734 KB|uhttps://publications.gc.ca/collections/collection_2019/mpo-dfo/Fs70-8-80-43-eng.pdf