Reproductive biology of anadromous arctic char, Salvelinus alpinus (L.)? in the Cumberland Sound area of Baffin Island
The ovaries of anadromous arctic char, Salvelinus alpinus (L.), captured during 1973 from four high arctic rivers on Baffin Island started to increase in weight early in July and were at their heaviest in mid‐September just before spawning. At this time, 40 cm (615 g) char from two rivers contained...
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crwiley:10.1111/j.1095-8649.1975.tb04584.x 2024-06-02T08:01:30+00:00 Reproductive biology of anadromous arctic char, Salvelinus alpinus (L.)? in the Cumberland Sound area of Baffin Island Moore, J. W. 1975 http://dx.doi.org/10.1111/j.1095-8649.1975.tb04584.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1975.tb04584.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1975.tb04584.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Biology volume 7, issue 2, page 143-151 ISSN 0022-1112 1095-8649 journal-article 1975 crwiley https://doi.org/10.1111/j.1095-8649.1975.tb04584.x 2024-05-03T11:25:53Z The ovaries of anadromous arctic char, Salvelinus alpinus (L.), captured during 1973 from four high arctic rivers on Baffin Island started to increase in weight early in July and were at their heaviest in mid‐September just before spawning. At this time, 40 cm (615 g) char from two rivers contained ovaries weighing 17.0 g (dry) which differed significantly from the 22.5 g gonads of comparable char from the other two areas. Gonadal development in male fish began in June and the diameter of testes at full maturity (3.0–4.0 cm) was similar regardless of river system. Fecundity of comparable fish varied significantly among the rivers with char 40 cm in length containing 1400–2400 eggs while the corresponding values for 60 cm (i.e. 2050 g) char ranged from 4000–5500. The diameter of both immature and mature eggs was similar regardless of system. Values for immature eggs averaged 0.64 mm in 40 cm fish and 1.60 mm in 60 cm specimens. Diameter of mature eggs, on the other hand, was considerably greater (3.2 and 4.3 mm, respectively). Maturity was first reached at age 10 (i.e. 35 cm) in both males and females and maturing fish of both sexes were not always restricted to fresh water. Redd construction occurred at a depth of one to at least 11 m at a temperature of 0.5–4.0° C. The percentage of eggs retained in the body cavity after spawning varied from 0.22–1.50 and the mortality rate of spawned eggs was extremely low. Article in Journal/Newspaper Arctic Baffin Island Baffin Cumberland Sound Salvelinus alpinus Wiley Online Library Arctic Baffin Island Cumberland Sound ENVELOPE(-66.014,-66.014,65.334,65.334) Journal of Fish Biology 7 2 143 151 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
The ovaries of anadromous arctic char, Salvelinus alpinus (L.), captured during 1973 from four high arctic rivers on Baffin Island started to increase in weight early in July and were at their heaviest in mid‐September just before spawning. At this time, 40 cm (615 g) char from two rivers contained ovaries weighing 17.0 g (dry) which differed significantly from the 22.5 g gonads of comparable char from the other two areas. Gonadal development in male fish began in June and the diameter of testes at full maturity (3.0–4.0 cm) was similar regardless of river system. Fecundity of comparable fish varied significantly among the rivers with char 40 cm in length containing 1400–2400 eggs while the corresponding values for 60 cm (i.e. 2050 g) char ranged from 4000–5500. The diameter of both immature and mature eggs was similar regardless of system. Values for immature eggs averaged 0.64 mm in 40 cm fish and 1.60 mm in 60 cm specimens. Diameter of mature eggs, on the other hand, was considerably greater (3.2 and 4.3 mm, respectively). Maturity was first reached at age 10 (i.e. 35 cm) in both males and females and maturing fish of both sexes were not always restricted to fresh water. Redd construction occurred at a depth of one to at least 11 m at a temperature of 0.5–4.0° C. The percentage of eggs retained in the body cavity after spawning varied from 0.22–1.50 and the mortality rate of spawned eggs was extremely low. |
format |
Article in Journal/Newspaper |
author |
Moore, J. W. |
spellingShingle |
Moore, J. W. Reproductive biology of anadromous arctic char, Salvelinus alpinus (L.)? in the Cumberland Sound area of Baffin Island |
author_facet |
Moore, J. W. |
author_sort |
Moore, J. W. |
title |
Reproductive biology of anadromous arctic char, Salvelinus alpinus (L.)? in the Cumberland Sound area of Baffin Island |
title_short |
Reproductive biology of anadromous arctic char, Salvelinus alpinus (L.)? in the Cumberland Sound area of Baffin Island |
title_full |
Reproductive biology of anadromous arctic char, Salvelinus alpinus (L.)? in the Cumberland Sound area of Baffin Island |
title_fullStr |
Reproductive biology of anadromous arctic char, Salvelinus alpinus (L.)? in the Cumberland Sound area of Baffin Island |
title_full_unstemmed |
Reproductive biology of anadromous arctic char, Salvelinus alpinus (L.)? in the Cumberland Sound area of Baffin Island |
title_sort |
reproductive biology of anadromous arctic char, salvelinus alpinus (l.)? in the cumberland sound area of baffin island |
publisher |
Wiley |
publishDate |
1975 |
url |
http://dx.doi.org/10.1111/j.1095-8649.1975.tb04584.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1975.tb04584.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1975.tb04584.x |
long_lat |
ENVELOPE(-66.014,-66.014,65.334,65.334) |
geographic |
Arctic Baffin Island Cumberland Sound |
geographic_facet |
Arctic Baffin Island Cumberland Sound |
genre |
Arctic Baffin Island Baffin Cumberland Sound Salvelinus alpinus |
genre_facet |
Arctic Baffin Island Baffin Cumberland Sound Salvelinus alpinus |
op_source |
Journal of Fish Biology volume 7, issue 2, page 143-151 ISSN 0022-1112 1095-8649 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1095-8649.1975.tb04584.x |
container_title |
Journal of Fish Biology |
container_volume |
7 |
container_issue |
2 |
container_start_page |
143 |
op_container_end_page |
151 |
_version_ |
1800745889423163392 |