The life cycle of<i>Pteronarcys scotti</i>(Plecoptera: Pteronarcyidae) from the Southern appalachians, U.S.A.

Folsom, Todd C.; Manuel, Kenneth L.

doi:10.1080/01650428309361149

Cited by 7 publications

(4 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Two-to 3-yr life cycles with a 9-10-mo egg diapause occur in other Pteronarcys such as P. dorsata (Barton 1980), P. proteus (Holdsworth 1941a, 1941b, and P scotti in the southern Appalachian Mountains (Folsom and Manuel 1983). However, Lechleitner and Kondratieff (1983) detailed a 1-yr life histoiy for P. dorsata in Virginia.…”

Section: Pteronarcyidaementioning

confidence: 99%

Life histories of stoneflies (Plecoptera) in the Rio Conejos of southern Colorado

DeWalt¹,

Stewart²

1995

The Great Basin Naturalist

View full text Add to dashboard Cite

Thirty-one stonefly species representing eight famihes were collected during the March 1987 to May 1990 study period. Genera represented by more than one species included Capnia. Utacapnia, Taenionema. Siiuallia, Triznaka, Isogenoides, and Isoperla. Peak species richness was recorded on or near the summer solstice in 1988 and 1989. Climatic differences between years were reflected in nymphal development and emergence phenology of most species. New or important corroborative life histoiy data are presented for 1 1 stonefly species of this assemblage. The hyporheic nymphal development of most chloroperlid species limited the number of early instars sampled and our capacity' to inteipret voltinism. Limited nymphal data suggested a univoltine-slow cycle for Phimiperia diversa (Prison). Adults of Suwallia pallidula (Banks) and S\ uardi (Banks) were present for an extended summer period, but the bulk of their respective emergence times was temporally separated. Isogenoides zionensis Hanson, Pteronarcella hadia (Hagen), and Pteronarcijs califomica Newport were all showTi for the first time to have a 9-10-mo egg diapause, and all three species have a semivoltine life cycle. Skwcda americana (Klapalek) and Isoperla ftdva Claassen were further confimied to have univoltine-slow cycles. Univoltine-fast and univoltine-slow life cycles are reported for the first time in /. phalerata and /. qiiinquepunctata, respectively. Regression analysis revealed that si.x of the eight abimdant species had extended emergence patterns (slopes of <5%/d), while only two had synchronous patterns. Warmer spring and summer temperatures in 1989 increased the slopes for five of the eight species studied, but did not change their synchrony designation.

show abstract

Section: Pteronarcyidaementioning

confidence: 99%

Life histories of stoneflies (Plecoptera) in the Rio Conejos of southern Colorado

DeWalt¹,

Stewart²

1995

The Great Basin Naturalist

View full text Add to dashboard Cite

show abstract

“…The presence of F-6 instars in spring suggests that egg development occurs in a direct manner (without diapause) and that these larvae hatch in the previous year (Folsom & Manuel, 1983). However, this is a hypothesis that will require confirmation.…”

Section: Discussionmentioning

confidence: 99%

“…Accurate identification of the last instars (F-0-F-3) is of utmost importance for understanding the complex life cycles of Odonata. Nevertheless, it is equally important to sample smaller larvae (i.e., F-6 and below) to derive accurate voltinism patterns (Aoki, 1999;Folsom & Manuel, 1983).…”

Section: Discussionmentioning

confidence: 99%

Life cycle and seasonal regulation of Onychogomphus forcipatus unguiculatus in the Seybouse River, Algeria (Insecta: Odonata)

Samraoui,

Touati,

Ferreras-Romero

et al. 2024

IJO

View full text Add to dashboard Cite

Understanding the seasonal regulation and life cycle patterns of Odonata is critical to identifying the factors that influence their voltinism. While the life history and seasonal regulation of Odonata, particularly gomphids, has been studied extensively, few studies have focused on North African gomphids. This study aims to contribute to the understanding of the life cycle of Onychogomphus forcipatus unguiculatus (Vander Linden, 1823), a western Mediterranean gomphid, on the Seybouse River in northeastern Algeria and discuss its seasonal regulation. Our results imply that a generation of O. f. unguiculatus requires two years to develop. The appearance of small (F-6) larvae in early spring can be attributed to the hatching of eggs in the previous year, followed by their overwintering in interstitial habitats. This abrupt appearance of small larvae is the result of their unique life history strategy of developing and surviving in specialized habitats during winter, then continuously growing and developing. The senior cohort overlaps with its junior counterpart, overwintering primarily in instars F-1, F-2, and, to a lesser extent, F-3, before beginning to emerge in late spring and early summer. By examining the voltinism and life cycle patterns of O. f. unguiculatus, this study contributes to our understanding of the reproductive strategies and population dynamics of this western Mediterranean gomphid, as well as of factors affecting the phenology and ecology of Odonata, particularly in North Africa, and in this manner contributes to overall efforts to protect and manage freshwater ecosystems in this region.

show abstract

“…Beginning 15 September, all stoneflies were sexed before tagging. Females nymphs of this species have a genital notch on the eighth sternite (Branham & Hathaway, 1975;Folsom & Manuel, 1983) and males>32 mm long have a distinctive bulbous lobe on the tenth (terminal) tergite.…”

Section: Methodsmentioning

confidence: 96%

Movement patterns and ecology of Pteronarcys nymphs (Plecoptera)

Freilich

1991

Freshwater Biology

View full text Add to dashboard Cite

1. Individually tagged Pteronarcys californica (Newport) nymphs were caught and recaptured over a 3-nionth period to determine their movement patterns and home range size. Sex/age structure, population density, and food habits (from gut contents) were also recorded. More than l(KM)nymphs were tagged of which 256(25%) were recaptured at least onee. Tagged insects were confined to contiguous fast water, cobble riffles. Low velocity, silt-bottomed pools acted as barriers.2. This stonefly has a 3-year life cycle although only the two oldest nymphal size-elasses were tagged. Females were larger than males at all ages. The population sex ratio was skewed 60:40 towards females. Densities averaged 1.7 m~'±0.17 SE (range 0-19 m^).3. Most movements were short, indicating that a majority of the stoneflies stayed within a few metres of their first capture point (mean 1.8 m downstream ±0.51 SE, range 44 m downstream to 40 m upstream). Significant patch size is a stream reach 24 m long that would contain 85% of the average individual's movements. Time between captures averaged 16 d ±0.734 SE (maximum 81 d). Eight individuals were notable for extremely rapid upstream movements ranging from 6 to 22 m d~'. 4. Frequency of movements up and downstream differed significantly between the sexes. Pteronarcys distribution was elumped with certain quadrats representing 'zones of attraction.' The stoneflies moved rapidly between zones, then stayed many days in those areas. Movements differed significantly from random walk models. 5. Guts contained 75% diatoms, 15% vascular plant material, and 8% animal remains. Females ate significantly more diatoms than males on a volumetric basis.

show abstract

The life cycle ofPteronarcys scotti(Plecoptera: Pteronarcyidae) from the Southern appalachians, U.S.A.

Cited by 7 publications

References 4 publications

Life histories of stoneflies (Plecoptera) in the Rio Conejos of southern Colorado

Life histories of stoneflies (Plecoptera) in the Rio Conejos of southern Colorado

Life cycle and seasonal regulation of Onychogomphus forcipatus unguiculatus in the Seybouse River, Algeria (Insecta: Odonata)

Movement patterns and ecology of Pteronarcys nymphs (Plecoptera)

Contact Info

Product

Resources

About