Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Alosa fallax fallax"'
Publikováno v:
Scientia Marina, Vol 67, Iss 3, Pp 313-322 (2003)
In order to describe the stages of oogenesis of twaite shad, Alosa fallax fallax, 265 females were collected between March and June 1997, February and June 1998 and January and April 1999 in the Rivers Mira and Guadiana. From the histological study o
Externí odkaz:
https://doaj.org/article/4412e979920d456fa813c478b75a52d9
Autor:
CASWELL P. A., APRAHAMIAN M. W.
Publikováno v:
Knowledge and Management of Aquatic Ecosystems, Vol 0, Iss 362-363, Pp 919-929 (2001)
The spawning habitat of twaite shad comprises a fast-flowing shallow area of unconsolidated gravel/pebble and/or cobble substrate. The River Habitat Survey flow types « smooth flow », « rippled flow » and « unbroken standing waves » were signif
Externí odkaz:
https://doaj.org/article/b4db359f44284cea994326f8de30b98d
Autor:
APRAHAMIAN M. W., APRAHAMIAN C. D.
Publikováno v:
Knowledge and Management of Aquatic Ecosystems, Vol 0, Iss 362-363, Pp 953-972 (2001)
Year class strength (YCS) was estimated for the 25 year period between 1972 and 1996. The index (YCS) was based on the mean number of six year old female fish caught per tide (1972-1991) in a net fishery at the start of the freshwater phase of their
Externí odkaz:
https://doaj.org/article/bd05d7a9aa9f4689868442c3297f571f
Autor:
APRAHAMIAN M. W., LESTER S. M.
Publikováno v:
Knowledge and Management of Aquatic Ecosystems, Vol 0, Iss 362-363, Pp 941-951 (2001)
The mean age of maturity of female Alosa fallax fallax based on annual samples ranged from 4.28 to 5.26 years, with an overall mean ± 95 % CI of 4.80 ± 0.021 years. The mean age at first spawning was determined for the 1973 – 1992 year classes an
Externí odkaz:
https://doaj.org/article/ae395bb515534ef49e6e1d609ec39e3c
Autor:
S. M. Lester, M. W. Aprahamian
Publikováno v:
Knowledge and Management of Aquatic Ecosystems, Vol 0, Iss 362-363, Pp 941-951 (2001)
The mean age of maturity of female Alosa fallax fallax based on annual samples ranged from 4.28 to 5.26 years, with an overall mean ± 95 % CI of 4.80 ± 0.021 years. The mean age at first spawning was determined for the 1973 – 1992 year classes an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7a0bef09a005e403cd1bcc2479a525ea
https://doaj.org/article/ae395bb515534ef49e6e1d609ec39e3c
https://doaj.org/article/ae395bb515534ef49e6e1d609ec39e3c
Autor:
M. W. Aprahamian, P. A. Caswell
Publikováno v:
Knowledge and Management of Aquatic Ecosystems, Vol 0, Iss 362-363, Pp 919-929 (2001)
The spawning habitat of twaite shad comprises a fast-flowing shallow area of unconsolidated gravel/pebble and/or cobble substrate. The River Habitat Survey flow types « smooth flow », « rippled flow » and « unbroken standing waves » were signif
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1c2039737a2da0958556b9969e0d6ae7
https://doi.org/10.1051/kmae:2001027
https://doi.org/10.1051/kmae:2001027
Autor:
M. W. Aprahamian, C. D. Aprahamian
Publikováno v:
Knowledge and Management of Aquatic Ecosystems, Vol 0, Iss 362-363, Pp 953-972 (2001)
Year class strength (YCS) was estimated for the 25 year period between 1972 and 1996. The index (YCS) was based on the mean number of six year old female fish caught per tide (1972-1991) in a net fishery at the start of the freshwater phase of their
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c0210c0d07b209c0872f9edbe46a29da
https://doi.org/10.1051/kmae:2001030
https://doi.org/10.1051/kmae:2001030
Autor:
Simoens, Ilse, Van Thuyne, Gerlinde
Publikováno v:
Simoens, I & Van Thuyne, G 2008, Conservation status of the Natura 2000 species 1103 (Alosa fallax fallax) for the Belgian Atlantic region . in Conservation status of the Natura 2000 habitats and species . Instituut voor Natuur-en Bosonderzoek .
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______1096::f05e324629a96cdbb99667d074c317b7
https://purews.inbo.be/files/274081/178041.pdf
https://purews.inbo.be/files/274081/178041.pdf
Worldwide, river fragmentation is primarily responsible for the decline of populations of migrating fish. In particular, anadromous fish species, which necessarily migrate to fresh water to reproduce, are endangered since many are no longer able to r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od_______232::4a65e7d17944d4b397f95926a3d373cf
http://www.vliz.be/nl/open-marien-archief?module=ref&refid=121728
http://www.vliz.be/nl/open-marien-archief?module=ref&refid=121728
Publikováno v:
Scientia Marina; Vol 67, No 3 (2003); 313-322
In order to describe the stages of oogenesis of twaite shad, Alosa fallax fallax, 265 females were collected between March and June 1997, February and June 1998 and January and April 1999 in the Rivers Mira and Guadiana. From the histological study o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=issn02148358::154b551e8c17a8aef8d040466d5d64b9
http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/481
http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/481