Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 6 de 6
Filtrar
Mais filtros










Base de dados
Intervalo de ano de publicação
1.
Zootaxa ; 4608(1): zootaxa.4608.1.5, 2019 May 17.
Artigo em Inglês | MEDLINE | ID: mdl-31717162

RESUMO

A complete list of free-living nematodes found in Lake Baikal is presented. A total of 112 species of roundworms from 32 genera, 16 families and 8 orders are listed. The locations and depths of nematode finds in Baikal are indicated, information on their distribution is summarized, and zoogeographical characteristics for each species are given.


Assuntos
Nematoides , Animais , Lagos
2.
Zootaxa ; 4459(3): 525-534, 2018 Aug 15.
Artigo em Inglês | MEDLINE | ID: mdl-30314123

RESUMO

Two new nematode species found in Lake Baikal (Russia) are described and illustrated. Prodorylaimus baikalensis sp. n. is morphologically close to P. irminii Vinciguerra Orselli, 2011 and P. obesus Ahmad Jarajpuri, 1982. From the first species it differs by the shorter and thinner body, longer tail, longer odontostyle and greater number of ventromedian supplements. From the second species it differs by the longer and more slender tail, shorter odontophore, longer female prerectum and greater number of ventromedian supplements in males. Mononchus minutus sp. n. is similar to M. niddensis Skwarra, 1921 and M. agilis Gagarin Mataphonov, 2004. The new species differs from M. niddensis by the shorter body, more slender tail, longer buccal cavity, longer spicules and smaller number of ventromedian supplements in males. From M. agilis it differs by the shorter and thinner body, shorter tail, longer spicules and smaller number of ventromedian supplements in males.


Assuntos
Nematoides , Animais , Feminino , Lagos , Masculino , Federação Russa
3.
Zootaxa ; 4353(1): 133-145, 2017 Nov 22.
Artigo em Inglês | MEDLINE | ID: mdl-29245528

RESUMO

Two new nematode species found in Lake Baikal (Russia) are described and illustrated. Tobrilus saprophagus sp. n. is morphologically close to T. bekmanae Tsalolikhin, 1975 and T. securus Gagarin & Naumova, 2011. The new species differs from T. bekmanae by the less slender tail (♂ c' = 2.9-3.9, ♀ c' = 3.5-6.8 vs ♂ c' = 6, ♀ c' = 9 in T. bekmanae), narrower labial region (24-30 µm vs 35-38 µm in T. bekmanae), shorter outer labial setae (10-12 µm vs 13-18 µm in T. bekmanae) and shorter stoma (25-32 µm vs 40-56 µm in T. bekmanae). T. saprophagus sp. n. differs from T. securus by the shorter and less slender tail (♂ c = 11.5-16.1, c' = 2.9-3.9, ♀ c = 8.8-13.1, c' = 3.5-6.8 vs ♂ c = 6.7-8.4, c' = 6.3-9.3, ♀ c = 7.1-8.4, c' = 6.6-7.7 in T. securus), longer outer labial setae (10-12 µm vs 6.5-9.0 µm in T. securus) and shorter spicules (45-48 µm vs 52-58 µm in T. securus). Epitobrilus interstitialis sp. n. is close to E. steineri (Micoletzky, 1925), but differs by the longer body (3.88-5.97 mm vs 2.14-3.35 mm), longer tail (250-335 µm vs 160-199 µm for males), longer outer labial setae (27-40 µm vs 22-25 µm) and longer spicules (73-78 µm vs 51-71 µm). Diagnostic morphological characters of males of valid species of the genus Epitobrilus Tsalolikhin, 1981 are given. Tobrilus (Epitobrilus) medius G. Schneider, 1916 (apud Tsalolikhin, 1980) is synonymized with the species Eutobrilus peregrinator Tsalolikhin, 1983.


Assuntos
Nematoides , Animais , Lagos , Masculino , Federação Russa
4.
Zootaxa ; 4196(1): zootaxa.4196.1.5, 2016 Nov 20.
Artigo em Inglês | MEDLINE | ID: mdl-27988683

RESUMO

Two new nematode species found in Lake Baikal (Russia) are described and illustrated. Tobrilus methanus sp. n. is morphologically close to T. modestus Gagarin, 1996 and T. incognitus Tsalolikhin, 1972. The new species differs from T. modestus by the thinner body (a = 20-29 vs a = 15.5-18.5), longer pharynx (b = 3.4-4.4 vs b = 5.0-6.2), comparatively longer tail (c' = 3.4-5.0 vs c' = 2.0-2.5), less number of supplementary organs (6 vs 7-8) and presence of subterminal seta. T. methanus sp. n. differs from T. incognitus by the thicker body (a = 20-29 vs a = 35-37), longer pharynx (b = 3.4-4.4 vs b = 5.1-5.8), shorter outer labial setae (3-4 µm long vs 10 µm long) and presence of crystalloids. Tripyla posolskii sp. n. is close to T. dybowskii Tsalolikhin, 1976, but differs by the shorter body (L = 1548-2078 µm vs L = 2400-3530 µm), shorter tail (c = 4.7-7.2, c' = 5.8-7.9 vs c = 2.8-4.8, c' = 7.3-11.9) and shorter spicules (47-57 µm long vs 85-92 µm long). A key for the identification of valid species of the genus Tobrilus from Lake Baikal is given.


Assuntos
Nematoides/anatomia & histologia , Nematoides/classificação , Distribuição Animal , Animais , Feminino , Lagos , Masculino , Nematoides/fisiologia , Federação Russa , Especificidade da Espécie
5.
Zootaxa ; 4098(3): 582-92, 2016 Apr 07.
Artigo em Inglês | MEDLINE | ID: mdl-27394603

RESUMO

Two new nematode species found in Lake Baikal (Russia) are described and illustrated. Ethmolaimus riparius sp. n. is morphologically close to E. pilosus Shoshin, 1998 and E. lanatus Shoshin, 1998. The new species differs from E. pilosus by the longer and thinner body (L = 1228-1501 µm, a = 26-34 vs L = 720-1070 µm, a = 19-23), larger stoma (26-32 µm long vs 19-24 µm long), longer spicules and gubernaculum (45-50 µm long and 21-25 µm long vs accordingly 32-37 µm long and 8 µm long). E. riparius sp. n. differs from E. lanatus by the longer body (L = 1228-1501 µm vs L = 680-1180), shorter cephalic setae (its length is equal 1.1-1.4 labial region diameter vs 1.6-2.1 labial region diameter) and longer spicules and gubernaculum (45-50 µm long and 21-25 µm long vs accordingly 25-30 µm long and 7-8 µm long). Paramononchus major sp. n is close to P. orientalis Gagarin & Naumova, 2012, but differs from it by the longer body (L = 5926-7820 µm vs L = 3081-3778 µm), longer spicules (410-475 µm long vs 208-238 µm long) and larger number of precloacal supplements (52-61 vs 21-24). Keys for the identification of valid species of the genera Ethmolaimus and Paramononchus are given.


Assuntos
Adenofórios/classificação , Lagos/parasitologia , Adenofórios/anatomia & histologia , Adenofórios/crescimento & desenvolvimento , Estruturas Animais/anatomia & histologia , Estruturas Animais/crescimento & desenvolvimento , Animais , Tamanho Corporal , Ecossistema , Feminino , Masculino , Tamanho do Órgão , Federação Russa
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...