Figure 4 - uploaded by Robert G. Forsyth
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Succinea strigata. a: Approximately 3.1km 340° True from Vents River mouth (RBCM 004-00128-005). b: Irons Creek (RBCM 004-00127-005).
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Context 1
... photographs were taken using a Nikon ® Coolpix 950™ digital camera. Figure 4 was photographed through a Russian-built compound microscope (МБС-10) manu- ally held to one eyepiece with the camera's focus set to infinity. This report uses the same nomenclature as appears in Land Snails of British Columbia (Forsyth 2004). ...
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High river temperatures have been linked to pre‐spawning mortalities in salmon returning to their natal streams. As a first step in predicting these temperatures, flow and temperature models were developed for the Fraser and Thompson Rivers in British Columbia. The flow model is essentially pre‐calibrated while the temperature model was calibrated...
Citations
... Novisuccinea strigata (L. Pfeiffer, 1854) is an arctic- boreal terrestrial snail that occupies a wide variety of mesic to xeric habitats including grassy slopes, coastal tundra, and coniferous, mixed-wood or regenerative forests (Dall, 1905;Kalas, 1981;Forsyth, 2005). It has a broad range that extends from eastern Siberia across the Bering Strait through Alaska and northern Canada (Dall, 1905;Pilsbry, 1948;Likharev & Rammel'meier, 1962). ...
... It has a broad range that extends from eastern Siberia across the Bering Strait through Alaska and northern Canada (Dall, 1905;Pilsbry, 1948;Likharev & Rammel'meier, 1962). In Canada, this species is known to occur in northern British Columbia (Forsyth, 2005), the Yukon Territory (Dall, 1905;Pilsbry, 1948;La Rocque, 1953) and the Northwest Territories (Dall, 1905;Pilsbry, 1948). However, a record from southern Saskatchewan by Russell (1934) seems very unlikely. ...
... I first encountered this species during fieldwork in northern British Columbia in September 2004 for the Royal British Columbia Museum, Victoria (RBCM). This species was collected at six sites along the Alaska Highway, which have been documented and mapped elsewhere (Forsyth 2005). The sites were mesic, with abundant understory, and either mixed forests domi- nated by spruce or regenerating areas with mostly broadleaf shrubs and trees (Forsyth, 2005). ...
Novisuccinea strigata (L. Pfeiffer, 1855) is an arctic-boreal terrestrial mollusc that is both amphiberingian and occurring across a large area of northwestern Canada, including northern British Columbia, Yukon, and the Northwest Territories. The shell, jaw, and reproductive anatomy is described from specimens collected near the Hyland River, on the Liard Plain for northern British Columbia. Reproductive anatomy, and most notably the twisting of the free oviduct around the duct of the bursa copulatrix, indicates that this species properly belongs to the genus Novisuccinea as redefined by some American workers.
... Miembros de la familia viven en hábitats de agua dulce con condiciones húmedas por debajo de rocas, sobre árboles y en la hojarasca de bosques mixtos o arbustos de hoja ancha (Forsyth, 2005;Arroyo-Cabrales et al. 2008; Naranjo-García y Fahy, 2010). ...
Se realizó una reconstrucción paleo-ambiental de cinco estratos lacustres del Rancho Buena Fe, Parras, Coahuila, México mediante la interpretación de los requerimientos ecológicos sobre los factores de sedimentación, clima y vegetación de la malacofauna del Pleistoceno-tardío y el Holoceno. De la malacofauna, compuesta de gasterópodos y bivalvos de agua dulce y terrestres, se identificaron 19 especies: Deroceras laeve, Cochlicopa lubrica, Carychium exiguum, Euconulus sp., Zonitoides arboreus, Fossaria obrussa, Lymnaea humilis, Gyraulus parvus, Ferrissia fragilis, Hawaiia minuscula, Gastrocopta cristata, Pupilla hebes, Physa acuta, Pisidium compressum, Pisidium casertanum, Succinea sp., Vallonia gracilicosta, Gastrocopta tappaniana y Glyphyalinia indentata. El alto porcentaje de las especies de la malacofauna del bosque durante el Pleistoceno-tardío indicó la existencia de un lago permanente, poco profundo de aguas tranquilas, con árboles bordeando la orilla, con sábanas y pastizales presentes solo en parches. Se sugiere una temperatura moderada e inferior a la que existe actualmente, con una mayor precipitación pluvial. La malacofauna acuática del Holoceno revela el aspecto de un lago efímero con aguas tranquilas, fluctuaciones estacionales y un cambio climático en donde los inviernos se volvieron menos severos y los veranos secos y calientes, con prolongados periodos de sequía los cuales causaron la evaporación total del lago en el área de estudio.
... The hills where they live are relatively dry and hot (Thompson, 1968). Some me mbers of this family inhabit under rocks, leaf litter in mixed forests or broadleaf shrubs and trees (Forsyth, 2005); they live under humid conditions (Arroyo-Cabrales et al., 2008). The genus has a wide distribution in North America, from peninsular Florida to South Carolina and west of Mexico. ...
Paleontological work carried out in the Late Pleistocene floodplain and bar fluvial deposits of northwestern Oaxaca, southern Mexico, resulted in collecting cranial and poscranial material of mammals identified as Glyptotherium, Hemiauchenia, Camelops, Odocoileus, two Equus species, Cuvieronius, Mammuthus and Bison. The presence of Bison in all the localities indicates a Rancholabrean North American Land Mammal age for the faunal assemblage. Also, many mollusk specimens were collected and belong to five families of terrestrial gastropods, three families of freshwater gastropods, and one family of freshwater bivalves. Additionally, several fragments of Rodentia indet., sigmodontine rodents, and scincomorph lizards were also recovered through the screen-washing of sediments. This faunal association was designed herein as the Viko vijin (cold epoch or period in Mixteca language) Local Fauna (L. F.) and shares nine mammalian taxa with the Rancholabrean local faunas of Terapa (Sonora, NW Mexico), Chapala (Jalisco), El Cedazo (Aguascalientes) and Tequixquiac (Mexico), central Mexico. Likewise, five of the eight mollusk families identified are also present in the Late Pleistocene Rancho La Amapola, San Luis Potosi, Central Mexico. The presence of the llama Hemiauchenia in Oaxaca represents the southern-most record of this genus during the Late Pleistocene in North America, while Late Pleistocene scincomorph lizards are recorded for first time in Oaxaca. Similarly, the records of the mollusk families Bulimulidae, Polygyridae and Urocoptidae in the Mixteca Alta Oaxaquenit are the first for Mexico and allow extend their geographic ranges from southern USA to southern Mexico during the Late Pleistocene.
... Jackiewicz (1993) reported that colour patterns on the mantle show great diversity, being similar in some species only. Forsyth (2005) mentioned that Succinea strigata could be distinguished from the other species of the family by its shell, jaw and external pigmentation. appendix is observed after the removal of the penial sheath (Fig. 6C). ...
Identification of Oxyloma sarsi is confused by the similarity of its shell to those of other succineid species. In this paper, morphological criteria (shape, colour and size of the shells (measurements), the reproduction system and the structure of the radula) for identification of O. sarsi are reconsidered. New data dealing with morphological identification of O. sarsi are presented: body pigmentation, the shape and size of the ‘jaw’, and the parameters of the reproductive system (length of the vagina and oviductus).
We present new Late Pleistocene and
Holocene records of a land and freshwater malacofauna assemblage from
the mammoth bearing site El Molino in
Parras, Coahuila, northern Mexico. We
identified 19 mollusk taxa, 14 species
were found within the Late Pleistocene
sediments and 10 species in the different
strata belonging to the Holocene. The
gastropods Gastrocopta tappaniana, Pupilla
hebes and Habroconus sp. are new Late
Pleistocene records for Mexico, the first
two being previously recorded for United
States Pleistocene deposits. New Mexican
Holocene fossil records include Euglesa
casertana, Galba humilis, Gastrocopta cristata,
Zonitoides arboreus, Hawaiia minuscula, and
Deroceras laeve. The habitat requirements
of the El Molino site malacofauna assemblage provides additional information on
the environmental changes that occurred
during the Pleistocene-Holocene transition. Woodland associated, hygrophilic
and hydrophilic malacofauna suggest a
humid forested and grassland habitat
during the Late Pleistocene, which subsequently changed to xeric conditions with
the colonization of xerophytic and aridity-tolerant aquatic species during and
after the Pleistocene-Holocene transition
at the study area.
