Výsledky vyhledávání - "Alex E. Peden"

Meristic Variation of Lycodapus mandibularis (Pisces: Zoarcidae) and Oceanic Upwelling on the West Coast of North America

Autor: Alex E. Peden

Publikováno v: Journal of the Fisheries Research Board of Canada. 36:69-76

Total vertebral counts of Lycodapus mandibularis populations in Georgia Strait, British Columbia, are significantly lower than those of southern populations off Oregon and California. The highest temperatures and lowest salinities at 200 m or deeper,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c73cc7ddbb8e5f2a88dbbd805b4a404e
https://doi.org/10.1139/f79-009

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Meristic variation of four fish species exhibiting lowest median counts in Georgia Strait, British Columbia

Autor: Alex E. Peden

Publikováno v: Canadian Journal of Zoology. 59:679-683

In contrast with other fish species, Lycodapus mandibularis (Zoarcidae), Lycodes diapterus (Zoarcidae), Nectoliparis pelagicus (Liparidae), and Lipariscus nanus (Liparidae) share ecological similarities that apparently produce low fin ray and vertebr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e03f9d2c88e0f38c8aed1abcc95a1265
https://doi.org/10.1139/z81-097

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Life history and status of the shorthead sculpin (Cottus confusus: Pisces, Cottidae) in Canada and the sympatric relationship to the slimy sculpin (Cottus cognatus)

Autor: Grant W. Hughes, Alex E. Peden

Publikováno v: Canadian Journal of Zoology. 62:306-311

Cottus confusus inhabits downstream portions of the Flathead River in Canada and the population may be seriously threatened. Cottus cognatus occupies habitats farther upstream than C. confusus but few differences in other ecological factors were foun

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::291f35efcfa3c466d1fd50c307b8e8d4
https://doi.org/10.1139/z84-047

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Distribution, morphological variation, and systematic relationship of Pholis laeta and P. ornata (Pisces: Pholididae) with a description of the related form P. nea n. sp

Autor: Grant W. Hughes, Alex E. Peden

Publikováno v: Canadian Journal of Zoology. 62:291-305

Although Pholis laeta and P. ornata are generally recorded in the literature as being distributed between California and Asiatic waters, we could not find verifiable specimens or records of P. ornata from Alaskan or western Pacific waters. A populati

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::11da068d62d7b96dfb6f5c793d1c9b0d
https://doi.org/10.1139/z84-046

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A systematic review of the fish genus Lycodapus (Zoarcidae) with descriptions of two new species

Autor: M. Eric Anderson, Alex E. Peden

Publikováno v: Canadian Journal of Zoology. 56:1925-1961

Six of 11 nominal species of Lycodapus, L. australis Norman, L. derjugini Andriashev, L. dermatinus Gilbert, L. fierasfer Gilbert, L. mandibularis Gilbert, and L. parviceps Gilbert, are recognized. Original descriptions and the disintegrated type do

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::83d51f313c60c69fbe22c914fe979b16
https://doi.org/10.1139/z78-262

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Morphologically distinct populations of the shorthead sculpin, Cottus confusus, and mottled sculpin, Cottus bairdi (Pisces, Cottidae), near the western border of Canada and the United States

Autor: W. E. Roberts, Grant W. Hughes, Alex E. Peden

Publikováno v: Canadian Journal of Zoology. 67:2711-2720

Previously known within Canada from the Flathead River, nominal Cottus confusus also occur in the Kettle, Columbia, and Slocan rivers of British Columbia. The latter populations are similar to those from Washington, and possess a post-maxillary pore,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d8b6511e44921c5e6c50666ceab1f0de
https://doi.org/10.1139/z89-384

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Differences in copulatory behavior as partial isolating mechanisms in the poeciliid fish Gambusia

Autor: Alex E. Peden

Publikováno v: Canadian Journal of Zoology. 53:1290-1296

Differences between species were found in the direction of gonopodial thrust of male Gambusia during copulation. Males of species such as G. heterochir, G. marshi, and G. regani direct their gonopodia posteriorly in the same direction as the orientat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b7e2bb136e3286bac0148493f1b54a6e
https://doi.org/10.1139/z75-154

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Sympatry in four species of Rhinichthys (Pisces), including the first documented occurrences of R. umatilla in the Canadian drainages of the Columbia River

Autor: Grant W. Hughes, Alex E. Peden

Publikováno v: Canadian Journal of Zoology. 66:1846-1856

Four species of Rhinichthys (R. cataractae, R. falcatus, R. osculus, and R. umatilla) are recognized in Canadian sections of the Columbia River, with sympatry occuring between all species except R. falcatus and R. osculus. Species status of the latte

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bae480dfeae3862c792580e97aad205e
https://doi.org/10.1139/z88-267

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Redescription of a North Pacific Prickleback, Alectridium auranticum

Autor: Alex E. Peden

Publikováno v: Journal of the Fisheries Research Board of Canada. 24:1-8

Alectridium auranticum Gilbert and Burke, which was previously known from a single specimen and synonymized with Alectrias alectrolophus (Pallas), is redescribed. Many new specimens indicate that the species is readily distinguishable from the other

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::191dfa7f7d6b658f8df18a171afef08e
https://doi.org/10.1139/f67-001

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