Bert’s Predaceous Diving Beetle appears to require a very specific habitat within springs and seepages in an undisturbed area with mosses over fine particulate soil (necessary for pupation) and the appropriate fine–grained substrate of sand and other fine particulates. Bert’s Predaceous Diving Beetle (Sanfilippodytes bertae), Roughley and Larson 2000, Coleoptera: Dytiscidae) is described from the springs and seepages in the arid grasslands of southern Alberta. By Alberta Sefa W9266514 Comparing two organisms about their reproduction Diving Beetle and Methanopyrus Kandleri reproduction For the reproductive processes, Diving beetle have four stages in their cycle: egg, larva,pupa and adult. Criterion B (Small Distribution Range and Decline or Fluctuation): Meets Endangered B1ab(iii)+2ab(iii). The Great diving beetle is a large and voracious predator of ponds and slow-moving waterways. This species is named in honour of Mrs. Bertha (Bert) F. Carr of Calgary who helped collect the type series. The “oasis” view from bottom of the cliff area, facing the location of the spring (facing west). Springs and seepages are biologically, chemically and physically complex and fragile. Legs yellowish. The great diving beetle, true to its name, is a rather large insect. Williams. Adult specimens are less than 3 mm in length, rather broadly oval in shape (length:width = 1.84 to 1.94). The larvae can grow up to 60 millimetres (2.4 in) in length, while the adults are generally 27–35 millimetres (1.1–1.4 in). It is limited to springs and seepage areas along steep cliff edges or river bends. Field work by entomologists studying springs has been extensive involving the visitation of many hundreds of sites in the prairie region alone, and although not all of the habitat of S. bertae has been surveyed, enough has been surveyed to allow some reliable conclusions to be drawn. They did refer us to spring or seep sites in the area said to be located on the hills behind the town of Spring Point, at the intersection of Spring Point R and Hwy 785. All beetles undergo complete and radical metamorphosis with four discrete and distinctive stages – egg, larval, pupal and adult stages. Nilsson, A.N. ** Formerly described as “Not In Any Category”, or “No Designation Required.”*** Formerly described as “Indeterminate” from 1994 to 1999 or “ISIBD” (insufficient scientific information on which to base a designation) prior to 1994. (Photo courtesy of Jennie Knopp. Bert’s Predaceous Diving Beetle might serve as an indicator species for other unusual or significant species. Ventral surface largely brown, except pronotum laterally, metasternum medially, posterior margin of metacoxal plates and abdominal sterna laterally, yellowish. The historical distribution of Bert’s Predaceous Diving Beetle is one or two point source sampling locations along the north banks of the Oldman River at the crossing of Hwy 2, east of Fort MacLeod in southern Alberta. They and their larvae (“water tigers”) are general predators on other small aquatic life forms. Sanfilippodytes bertae appears to require a very specific habitat within springs and seepages in an undisturbed area with mosses over fine particulate soil (necessary for pupation) and the appropriate fine–grained substrate of sand and other fine particulates. Bert’s Predaceous Diving Beetle (Sanfilippodytes bertae Roughley and Larson 2000) belongs to the Order Coleoptera, Family Dytiscidae. Alberta Environment. Environment Canada. Four field sampling sessions occurred in the spring (April 1–6), summer (July 1–4 and July 16–17) and fall (Sept. 1–6) of 2007. Although groundwater withdrawals represent only 3% of all water withdrawals in Alberta, many Albertans depend on well water and groundwater for human consumption. It is unclear whether a constant flow of water out of the spring or seep is required to maintain the populations. Giant Predaceous Diving Beetles. Examination of specimens in 42 collections and extensive field work prior to this had revealed only 2 localities. Entries are listed below in alphabetical order. Field surveys of springs and seeps in the region surrounding the first sampling locale recovered one specimen from the output point source of a spring which was the headwater of a tributary to the Oldman River, near Head–Smashed–In Buffalo Jump (Locality 3, the “oasis”). Male aedeagus. In terms of life history pattern, and based on collecting effort, this species appears to fall into one of five quite different categories of life history of temperate species outlined by Nilsson et al. * Formerly described as “Vulnerable” from 1990 to 1999, or “Rare” prior to 1990. Trend in [area and/or quality] of habitat Both general habitat. Insects are typically drawn to a given area by available food supply, weather, environmental factors (pollution, etc...), water supply, mating patterns, etc... and can be territorial. Is there sufficient habitat for immigrants in Canada? South bank of the Oldman River immediately east of the Highway 2 bridge (in background), west of Fort MacLeod (facing west). This particular spring runs out of the grassy land above the depression which leads into the oasis. These prey on various live animals including minnows. The result is extensive fouling and trampling of spring habitat, and this has continued up to the present and the number of undisturbed springs has continuously declined (Roughly and Larson 1991, p. 137). 1986. The Committee on the Status of Endangered Wildlife in Canada (COSEWIC) was created in 1977 as a result of a recommendation at the Federal–Provincial Wildlife Conference held in 1976. These are: 1) the northwest bank of the Oldman River immediately upstream of the Highway 2 crossing west of Fort MacLeod, Alberta; 2) Fort MacLeod; and 3) the newly discovered locality near Head–Smashed–In Buffalo Jump. Jennie A. Knopp has a B.Sc. The Wildlife Trusts: Protecting Wildlife for the Future. The Great diving beetle is a very large diving beetle that can be found in ponds and slow-moving water. Almost certainly this locality shares the groundwater system with the UNESCO site. Family : Belostomatidae (giant water bugs) in the order Hemiptera (true bugs) Description : “Giant water bug” perfectly describes the members of this family, as these hefty aquatic insects can reach 2 inches in length. This appears to be a female, based on characters of a male I have photographed previously. The research of the senior report writer has included the examination of 42 collections (listed by Larson et al. Are there extreme fluctuations in extent of occurrence? Sanfilippodytes bertae specimen showing dorsal features collected near Fort MacLeod, Figure 2. The great diving beetle ( Dytiscus marginalis) is an aquatic diving beetle native to Europe and northern Asia, and is particularly common in England . Holotype. There have been no life history studies published concerning S. bertae (Roughley and Larson 2000) or any other species within the genus Sanfilippodytes (Franciscolo 1979, Larson 2000). Blackish-green in colour, it can be spotted coming to the surface to replenish the air supply it stores beneath its wing cases. Intraspecific variation and intersexual correlation in secondary sexual characteristics of three diving beetles (Coleoptera: Dytiscidae). They are brownish with oval, flattened, beetle-like bodies. Registered charity number 207238. Regardless of destruction by cattle, the cumulative impacts of an already highly altered ecosystem, the demands of a growing economy, continued development (Figures 14, figure 1515) and the effects of climate change pose serious concerns of lowering groundwater tables and in turn the existence of the springs and see pages required by Bert’s Predaceous Diving Beetle. 182–183) including 8 species in Canada, four of which occur in Alberta (in addition to S. bertae, S. compertus (Brown 1942), S. edwardsi (Wallis, 1933), and S. pseudovilis (Young 1953)0.For a key to the Canadian species see Larson et al. Carr. The species is only known from this locale and now the recently discovered locale at the oasis (Figure 5). Giant Diving Beetle Found washed up on the shore at Topsail Beach, still very much alive and kicking. The path of the outflow of the oasis could not be followed to its termination, but it would appear from aerial photos that it does not connect as tributary to the Oldman River. They are found in aquatic environments and both larvae and adult prey on aquatic insects and fish.I found this particular one, already deceased, on the ground beside one of the watering troughs on a recent ranch visit. With respect to locality #1, a key element is that the springs and seepage areas flowed out of the near–vertical river banks at about the level of the high water (vernal flood) mark. 2000) of which the report writer is a co–author. Cattle droppings within the oasis habitat, Figure 12. Bert, along with her husband, John, has been a tremendous source of specimens, information and inspiration for this project. Tried to find some photos online but no luck. Information on collections at the J.B. Wallis Entomology Collection at University of Manitoba and photos of the specimen were kindly provided by Rob E. Roughley, curator. Current location of captures near Head–Smashed–In Buffalo Jump, Alberta (facing west), Figure 7. ), Figure 2. This report may be cited as follows: COSEWIC. Of these 50 sites, only seven had water present. Ranches, agriculture, feedlots, oil and gas, wind turbines and recreational sites dominate the landscape, with few natural areas remaining. The habitat of Bert’s Predaceous Diving Beetle is limited to springs and seepage areas in the watershed region of the Oldman River in southern Alberta. 2001. Other potential threats along the Oldman River Basin (along with the associated coulees, springs and seeps) include: high water withdrawals and demands for agricultural irrigation; increasing water demands resulting from a booming economy and subsequent rapid growth; impoundments which would drown the habitat; municipal and industrial development including oil and gas; increasing demands for water for use in industry and domestic use; groundwater withdrawals; ranching practices; feedlots; human recreation and climate change. Small undisturbed remnants of the above–described spring and seep habitat are very scarce in southern Alberta and many have been destroyed by cattle. Bert’s Predaceous Diving Beetle is indicative of the remaining, reasonably uncompromised, spring and seepage habitat found in southern Alberta. Nilsson. The adult appearance is typical of the genus except in elytral markings. Because the species is apparently endemic to Canada, rescue from outside cannot be anticipated. Of all potential habitats identified on maps and aerial photos, only nine sites contained water or springs and seeps. 2000), the egg, larval and adult stages are aquatic and are found in the hydrosphere. Although this region of southern Alberta appears stable due to the private ownership of most of the land (unlikely to have major developments unless the land is sold to developers), an oil and gas industry – and the rapid growth of towns, cities and infrastructure required to support immigration to the area during the development of this industry – may be a very real possibility in the future. Only 42 specimens of this species were known previously (collected in 1984) from potentially two locales near Fort MacLeod. 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