Structure, behavior, and the life cycle of an aquatic firefly, Luciola substriata, in China

2005 ◽  
Vol 137 (1) ◽  
pp. 83-90 ◽  
Author(s):  
Fu Xinhua ◽  
Ohba Nobuyoshi ◽  
Fredric V. Vencl ◽  
Lei Chaoliang
Keyword(s):  
Aquatic Vegetation ◽  
Lymnaea Stagnalis ◽  
Procambarus Clarkii ◽  
Mainland China ◽  
Pupal Stage ◽  
Eriocheir Sinensis ◽  
Light Spectrum ◽  
Prepupal Stage ◽  
Egg Incubation ◽  
First Time

AbstractThe aquatic firefly Luciola substriata Gorham, 1880 (Coleoptera: Lampyridae) was first discovered in mainland China in 2000. The larvae of L. substriata inhabit ponds and lakes rich in aquatic vegetation. We recorded L. substriata feeding on two species of aquatic snails, Lymnaea stagnalis (L., 1758) (Basommatophora: Lymnaeidae) and Gyraulus convexiusculus (Hutton, 1849) (Basommatophora: Planorbidae). Three predators of fireflies were also recorded for the first time: the red swamp crayfish, Procambarus clarkii (Girard, 1852) (Decapoda: Cambaridae), the crab Eriocheir sinensis H. Milne-Edwards, 1853 (Decapoda: Varunidae), and the grass carp, Ctenopharyngodon idellus (Valenciennes in Cuvier et Valenciennes, 1844) (Cypriniformes: Cyprinidae). Egg incubation averaged 11 days at an ambient temperature of 20–25 °C. The prepupal stage of L. substriata lasted 6.2 days, and the pupal stage lasted 4.4 days. The imaginal period lasted from May to September. Courtship light-flashing activity peaked 1 h after sunset. The light spectrum of responsiveness of L. substriata was 425–603 nm, with a peak responsive emission at 504 nm. In addition, we have described and illustrated the morphology of L. substriata.

Life cycle and behaviour of the aquatic firefly Luciola leii (Coleoptera: Lampyridae) from Mainland China

2006 ◽  
Vol 138 (6) ◽  
pp. 860-870 ◽  
Author(s):  
Xinhua Fu ◽  
Ohba Nobuyoshi ◽  
Fredric V. Vencl ◽  
Chaoliang Lei
Keyword(s):  
Short Range ◽  
Lymnaea Stagnalis ◽  
Mainland China ◽  
Pupal Stage ◽  
Central China ◽  
Male Courtship ◽  
Long Distance ◽  
Radix Auricularia ◽  
Distance Signal ◽  
Interflash Interval

AbstractThe aquatic larvae of the firefly Luciola leii Fu and Ballantyne occur on the substrate of rice fields and ditches in Hubei Province of central China. The behaviour and ecology of L. leii are described. We recorded L. leii larvae attacking four species of aquatic snails: Lymnaea stagnalis (L.) (Basommatophora: Lymnaeidae), Gyraulus convexiusculus (Hutton) (Basommatophora: Planorbidae), Radix auricularia (L.) (Lymnaeidae), and Bellamya purificata Heude (Mesogastropoda: Viviparidae). At dusk, flying males produced two types of advertising flashes. One type consisted of a train of 8 rapid, green flashes followed by 2–3 slow, prolonged flashes produced by patrolling males as a long-distance signal. The duration of flashes in the patrolling pattern was 530 ms and the interflash interval was 80 ms. The other type was a short-range signal consisting of a green glow, which was emitted by flying males that had located a female. Once a female had been located, the male landed and switched to a courting pattern. The male courtship pattern consisted of single flashes of about 400 ms duration, delivered every 1.8 s. Females produced single answering flashes of 910 ms duration, with a latency of approximately 630 ms after the male flash. Luciola leii was univoltine. Females oviposited 1 to 7 times (mean = 4.78). Females laid, on average, 187.19 eggs. The eggs hatched at 21.52 days. Eggs became luminescent 4 or 5 days before hatching. The larval stage had six instars. Mature larvae climbed onto land to construct pupal cells at the end of April of the next year. The pupal stage lasted, on average, 4.88 days. The imago lasted 10.13 days. No predators of larvae were observed. The spider Tetragnatha praedonia Koch (Araneae: Tetragnathidae) was frequently observed to capture adult male fireflies in its web.

scholarly journals Genomic analysis of Landes goose origin goose hemorrhagic polyomavirus, China

2021 ◽  
Author(s):  
Ling Luo ◽  
Xinglong Yu ◽  
Xiang Qu ◽  
Fei Zhao ◽  
Yan Ding ◽  
...  
Keyword(s):  
Causative Agent ◽  
Mainland China ◽  
Evolutionary Relationship ◽  
Genomic Analysis ◽  
Laboratory Diagnostics ◽  
First Time ◽  
Landes Geese ◽  
Hatching Rates

A goose hemorrhagic polyomavirus (GHPV) outbreak occurred in a Goose Farm in Hunan, China, between January and July 2021. Approximately 1,500 breeding goose died, and hatching rates dropped from the previous 85% to about 50% in this outbreak. GHPV HUN-01, isolated from the liver of infected Landes geese, shared a close evolutionary relationship with the Toulouse Goose 2000 and 14234 strain, isolated from geese in France and Hungary. The isolation of GHPV from the livers of dead embryos also demonstrates that the virus can be transmitted vertically. In conclusion, clinical and laboratory diagnostics of the diseased geese in this outbreak were consistent with GHPV being the causative agent. We learned that this is the first time that GHPV has been isolated from geese in mainland China.

scholarly journals Taxonomic study of the genus Lateantenna Amsel, 1968 (Lepidoptera: Blastobasidae) from Mainland China, with descriptions of four new species

2019 ◽  
Vol 30 (1) ◽  
pp. 1-19 ◽  
Author(s):  
Kaijian Teng ◽  
S. Wang
Keyword(s):  
New Species ◽  
Male Genitalia ◽  
Mainland China ◽  
Taxonomic Study ◽  
First Time

The ten species of the genus Lateantenna Amsel, 1968 known from China are reviewed. Four new species are described: L. semicircularis sp. n. and L. zhejiangensis sp. n. from Zhejiang, L. lunata sp. n. from Yunnan and Hainan, and L. triangulata sp. n. from Yunnan. Lateantenna eurotella (Adamski, 2010) and L. ianella (Adamski, 2003) are newly recorded for China. The females of L. camelliae (Chen & Wu, 2013) and L. ianella (Adamski, 2003) are described for the first time. Photographs of adults and genitalia are provided. Based on male genitalia, a key to the species of Mainland China is provided. Two maps showing the distribution of these species are also included.

Temperature and Time of Development of the Two Sexes in Drosophila

1926 ◽  
Vol 4 (2) ◽  
pp. 186-195 ◽  
Author(s):  
GERT BONNIER
Keyword(s):  
Statistical Significance ◽  
Pupal Stage ◽  
The Other ◽  
Female Development ◽  
Short Intervals ◽  
Influence Of Temperature On ◽  
The Times ◽  
The Moment ◽  
First Time ◽  
Insight Into

1. The time of development at 25°C. up to the moment of pupation is found to be for females and males respectively 116.62 ± 0.19 and 116.78 ± 0.20 hours. During the pupal stage the two times are 111.36 ± 0.15 and 115.46 ± 0.13 hours. 2. At 30° C. the corresponding figures are (in the same order): 99.95 ± 0.49, 103.37 ± 0.43, 78±15 ± 0.50 and 84.26 ± 0.34 hours. 3. These figures show that there is a statistical significance in the differences of the times of development of the two sexes for both the periods at 30°C. but only for the pupal stage at 25° C. It is pointed out that the fact that the longer time of male development as compared with female development at 25° C. is confined to the pupal stage, may be correlated with the other fact that the essential parts of the secondary sexual characters are developed during this stage. 4. It is shown that there is a negative correlation between the pre-pupal and pupal times of development, indicating that the longer the first time is, the shorter is, as a rule, the other time and vice versa. 5. With the aid of statistical methods it is shown that the shortening of the time of development at 30°C. as compared with the time at 25° C. is much more pronounced for the pupal than for the pre-pupal stage. 6. This last fact is discussed and it is emphasised that the ordinary methods of studying the influence of temperature on development are too rough to be of more than of a descriptive value, the only way of getting a deeper insight into the processes of development by temperature studies being the separate studies of a number of short intervals.

Two new species of the genus Hamodes Guenée, 1852 (Lepidoptera: Erebidae: Erebinae) from China, with notes on a new record in mainland China

Zootaxa ◽  
2019 ◽  
Vol 4590 (5) ◽  
pp. 594
Author(s):  
FU-HONG WEI ◽  
MIN WANG
Keyword(s):  
New Species ◽  
Male Genitalia ◽  
New Record ◽  
Southern China ◽  
Mainland China ◽  
Two New Species ◽  
First Time

Two new species of the genus Hamodes Guenée, 1852, H. pseudobutleri sp. nov. and H. hainana sp. nov. are described from Southern China. Compared with the already known species H. butleri, the new species have a wider submarginal line on forewing and medial line on hindwing respectively; and in male genitalia, H. pseudobutleri sp. nov. has a shorter and curved saccular process, while H. hainana sp. nov. has a stouter saccular process. In addition, H. pendleburyi Prout, 1932 is recorded in mainland China for the first time. Adults and their genitalia are illustrated.

scholarly journals Brought more than twice: the complex introduction history of the red swamp crayfish into Europe

2019 ◽  
pp. 2 ◽  
Author(s):  
Francisco J. Oficialdegui ◽  
Marta I. Sánchez ◽  
Christophe Lejeusne ◽  
Nic Pacini ◽  
Miguel Clavero
Keyword(s):  
Western Europe ◽  
Procambarus Clarkii ◽  
Western United States ◽  
Lake Naivasha ◽  
Wild Populations ◽  
Pet Trade ◽  
Introduction History ◽  
Red Swamp Crayfish ◽  
History Of ◽  
First Time

One of the biggest challenges in understanding and managing biological invasions is the identification of the routes of introduction. This information is often incomplete because of unnoticed, unreported and, sometimes, illegal translocations. Reports on the introduction of the red swamp crayfish (Procambarus clarkii) into Europe describe that it was introduced for the first time to southern Spain (1973 and 1974) from Louisiana; from there, it rapidly spread throughout several European countries. While other importation events and pathways of introduction have been suggested in the literature, there is no evidence that these led to wild populations in Europe. Our present study suggests two additional introduction routes into Europe from non-European areas where the red swamp crayfish had previously been reported. By using mtDNA, we found a shared haplotype between the Lake Naivasha in Kenya and Western Europe, as well as another between either western United States or Asia, and Malta. These findings support historical reports found in the literature for the former case and also point towards pet trade as driver of new introductions for the latter, thus highlighting the complex introduction history of the red swamp crayfish populations in Europe.

A new species of Sonotetranychus (Acariformes: Tetranychidae) from China

2017 ◽  
Vol 22 (9) ◽  
pp. 1378
Author(s):  
Tianci Yi ◽  
Zhi-Qiang Zhang
Keyword(s):  
New Species ◽  
Mainland China ◽  
The World ◽  
First Time ◽  
A New Species

The genus Sonotetranychus Tuttle, Baker & Abbatiello is recorded from mainland China for the first time. Sonotetranychus neosalicis sp. nov. is described from females collected on the leaves of Salix chaenomeloides Kimura (Salicaceae) in Nanchang, Jiangxi, China. This new species can be distinguished from other members of Sonotetranychus by femora I–IV with 8-6-3-2 tactile setae, genu III with three tactile setae, tibiae III–IV with 5-5 tactile setae and transverse striae between dorsal setae e. The key to Sonotetranychus species of the world is updated. 

Description of a new species of Micrencaustes (subgenus Mimencaustes Heller) (Coleoptera: Erotylidae: Encaustini) from China

Zootaxa ◽  
2006 ◽  
Vol 1176 (1) ◽  
pp. 53 ◽  
Author(s):  
JING LI ◽  
GUO-DONG REN
Keyword(s):  
New Species ◽  
Mainland China ◽  
Type Specimens ◽  
Chinese Academy Of Sciences ◽  
Academy Of Sciences ◽  
First Time ◽  
Beijing China ◽  
One New Species ◽  
A New Species

The subgenus Mimencaustes Heller is recorded from mainland China for the first time. One new species, Micrencaustes (Mimencaustes) acridentata sp. nov., is described in this paper. Type specimens are deposited in the Institute of Zoology, Chinese Academy of Sciences, Beijing, China and the Museum of Hebei University, Baoding, China.

Hong Kong unrest runs serious risk of escalation

2019 ◽  
Keyword(s):  
Hong Kong ◽  
Mainland China ◽  
Content Type ◽  
Mainland Chinese ◽  
The Public ◽  
Public Property ◽  
Chinese Military ◽  
Serious Injuries ◽  
First Time ◽  
The City

Significance The strike is a major escalation of the months-long anti-government protest movement, causing serious economic disruption for the first time and setting a precedent. The government’s suspension of a controversial bill allowing extradition to mainland China has failed to satisfy activists and a significant section of the public. Police today continue to clash with protesters in several locations around the city, resulting in arrests, serious injuries and destruction of public property. Impacts Use of mainland Chinese military riot police is now realistic. The longer protests continue, the more opportunities there are for miscalculation or radical tactics on both sides that deepen animosities. Limited mainland intervention as a last resort still seems more likely than a risky attempt to intimidate using overwhelming force.

A field trial of the synthetic oviposition pheromone with Culex quinquefasciatus say (Diptera: Culicidae) in Kenya

1988 ◽  
Vol 78 (3) ◽  
pp. 463-470 ◽  
Author(s):  
W. A. Otieno ◽  
T. O. Onyango ◽  
M. M. Pile ◽  
B. R. Laurence ◽  
G. W. Dawson ◽  
...  
Keyword(s):  
Growth Regulator ◽  
Culex Quinquefasciatus ◽  
Pupal Stage ◽  
Insect Growth Regulator ◽  
Breeding Sites ◽  
Insect Growth ◽  
Gravid Females ◽  
A Site ◽  
Effervescent Tablet ◽  
First Time

AbstractThe synthetic attractant pheromone 6-acetoxy-5-hexadecanolide in a formulation of 20 mg containing 5 mg of the active (−)-(5R,6S)-isomer in an effervescent tablet produced a high, positive overall response by gravid females of Culex quinquefasciatus Say when the mosquitoes were exposed to the pheromone in established breeding sites in western Kenya. Significantly more females (82%) oviposited around the pheromone source compared to a control. The activity of the pheromone persisted in the established breeding place for four days after application. The addition of the insect growth regulator S-31183 (2-[1-methyl-2-(4-phenoxyphenoxy)ethoxy]pyridine) to the formulation did not affect the activity of the pheromone. Newly-made breeding sites exposed domestically were not attractive initially for oviposition by gravid females but, after 18 days, they became more attractive. Trays treated with synthetic pheromone diverted females from similar unbaited trays exposed within 10 m. A sample of larvae taken from a site treated with pheromone and insect growth regulator showed 100% mortality by the pupal stage. Thus, the efficacy of the pheromone has been demonstrated for the first time in the field and the possibility of using this material in combination with a ‘safe’ insecticide confirmed.

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