Maternal and seasonal differences in egg sizes and spawning activity of northwest Atlantic haddock ( Melanogrammus aeglefinus ) in relation to body size and condition
Egg and larval production of 22 captive spawning pairs of northwest Atlantic haddock (Melanogrammus aeglefinus) were monitored. Females spawned an average of nine egg batches (range 316) with a mean batch fecundity of 60 000 eggs and mean total fecundity of 535 000 eggs. Mean spawning duration was...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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crcansciencepubl:10.1139/f04-125 2024-04-28T08:32:44+00:00 Maternal and seasonal differences in egg sizes and spawning activity of northwest Atlantic haddock ( Melanogrammus aeglefinus ) in relation to body size and condition Trippel, Edward A Neil, Steven RE 2004 http://dx.doi.org/10.1139/f04-125 http://www.nrcresearchpress.com/doi/pdf/10.1139/f04-125 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 61, issue 11, page 2097-2110 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2004 crcansciencepubl https://doi.org/10.1139/f04-125 2024-04-02T06:55:55Z Egg and larval production of 22 captive spawning pairs of northwest Atlantic haddock (Melanogrammus aeglefinus) were monitored. Females spawned an average of nine egg batches (range 316) with a mean batch fecundity of 60 000 eggs and mean total fecundity of 535 000 eggs. Mean spawning duration was 37 days with a mean batch interval of 5.4 days. In multiple linear regression, male Fulton's condition factor (range 1.101.55) and mean batch interval explained 56% of variation in fertilization rate (33% and 23%, respectively). Seasonal composite egg diameter spanned 1.371.53 mm among females. Mean egg diameter within females declined seasonally by an average of 10.4% (37% by volume). Females produced 46 larvae per gram body weight. Body weight was the single best predictor of fecundity (r 2 = 0.57), with Fulton's condition factor (range 1.041.76) explaining no significant additional variation over length or weight. Length and condition explained 39% of variation in seasonal composite egg diameter (22% and 17%, respectively) and body weight independently explained 32%. Sex-specific parental condition and body size acted through large egg size and elevated fertility to enhance reproductive output. Male spawning success was more sensitive than egg production to changes in condition. Article in Journal/Newspaper Northwest Atlantic Canadian Science Publishing Canadian Journal of Fisheries and Aquatic Sciences 61 11 2097 2110 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Trippel, Edward A Neil, Steven RE Maternal and seasonal differences in egg sizes and spawning activity of northwest Atlantic haddock ( Melanogrammus aeglefinus ) in relation to body size and condition |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Egg and larval production of 22 captive spawning pairs of northwest Atlantic haddock (Melanogrammus aeglefinus) were monitored. Females spawned an average of nine egg batches (range 316) with a mean batch fecundity of 60 000 eggs and mean total fecundity of 535 000 eggs. Mean spawning duration was 37 days with a mean batch interval of 5.4 days. In multiple linear regression, male Fulton's condition factor (range 1.101.55) and mean batch interval explained 56% of variation in fertilization rate (33% and 23%, respectively). Seasonal composite egg diameter spanned 1.371.53 mm among females. Mean egg diameter within females declined seasonally by an average of 10.4% (37% by volume). Females produced 46 larvae per gram body weight. Body weight was the single best predictor of fecundity (r 2 = 0.57), with Fulton's condition factor (range 1.041.76) explaining no significant additional variation over length or weight. Length and condition explained 39% of variation in seasonal composite egg diameter (22% and 17%, respectively) and body weight independently explained 32%. Sex-specific parental condition and body size acted through large egg size and elevated fertility to enhance reproductive output. Male spawning success was more sensitive than egg production to changes in condition. |
format |
Article in Journal/Newspaper |
author |
Trippel, Edward A Neil, Steven RE |
author_facet |
Trippel, Edward A Neil, Steven RE |
author_sort |
Trippel, Edward A |
title |
Maternal and seasonal differences in egg sizes and spawning activity of northwest Atlantic haddock ( Melanogrammus aeglefinus ) in relation to body size and condition |
title_short |
Maternal and seasonal differences in egg sizes and spawning activity of northwest Atlantic haddock ( Melanogrammus aeglefinus ) in relation to body size and condition |
title_full |
Maternal and seasonal differences in egg sizes and spawning activity of northwest Atlantic haddock ( Melanogrammus aeglefinus ) in relation to body size and condition |
title_fullStr |
Maternal and seasonal differences in egg sizes and spawning activity of northwest Atlantic haddock ( Melanogrammus aeglefinus ) in relation to body size and condition |
title_full_unstemmed |
Maternal and seasonal differences in egg sizes and spawning activity of northwest Atlantic haddock ( Melanogrammus aeglefinus ) in relation to body size and condition |
title_sort |
maternal and seasonal differences in egg sizes and spawning activity of northwest atlantic haddock ( melanogrammus aeglefinus ) in relation to body size and condition |
publisher |
Canadian Science Publishing |
publishDate |
2004 |
url |
http://dx.doi.org/10.1139/f04-125 http://www.nrcresearchpress.com/doi/pdf/10.1139/f04-125 |
genre |
Northwest Atlantic |
genre_facet |
Northwest Atlantic |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 61, issue 11, page 2097-2110 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f04-125 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
61 |
container_issue |
11 |
container_start_page |
2097 |
op_container_end_page |
2110 |
_version_ |
1797589817188417536 |