Pub Date : 2020-06-18DOI: 10.1080/13887890.2020.1755377
Tosaphol Saetung, Noppadon Makbun, M. Sartori, B. Boonsoong
Within the damselfly subfamily Platycnemidinae, eight species are currently recognized in South-East Asia. The final stadium larvae of only three of them have been so far described. The final stadium larva of Copera chantaburii is described and illustrated for the first time, based on reared specimens, and new provincial records both of larvae and adults of C. chantaburii are also provided. The larva of C. chantaburii can be distinguished from known species by the following combination of characters: square or almost horizontal rectangular shape of the outer lobe of the labial palp and fimbriated caudal lamellae that are stout at the base and narrow to an acute tip. The final stadium larva of Pseudocopera ciliata is redescribed with possibly diagnostic characters, such as the shape of the distal margin of the labial palp, the ratio of the length of caudal lamellae length and body length, setae on the margin of caudal lamellae and the setae on the terminal filament of the caudal lamellae.
{"title":"The subfamily Platycnemidinae (Zygoptera: Platycnemididae) in Thailand, with description of the final stadium larva of Copera chantaburii Asahina, 1984","authors":"Tosaphol Saetung, Noppadon Makbun, M. Sartori, B. Boonsoong","doi":"10.1080/13887890.2020.1755377","DOIUrl":"https://doi.org/10.1080/13887890.2020.1755377","url":null,"abstract":"Within the damselfly subfamily Platycnemidinae, eight species are currently recognized in South-East Asia. The final stadium larvae of only three of them have been so far described. The final stadium larva of Copera chantaburii is described and illustrated for the first time, based on reared specimens, and new provincial records both of larvae and adults of C. chantaburii are also provided. The larva of C. chantaburii can be distinguished from known species by the following combination of characters: square or almost horizontal rectangular shape of the outer lobe of the labial palp and fimbriated caudal lamellae that are stout at the base and narrow to an acute tip. The final stadium larva of Pseudocopera ciliata is redescribed with possibly diagnostic characters, such as the shape of the distal margin of the labial palp, the ratio of the length of caudal lamellae length and body length, setae on the margin of caudal lamellae and the setae on the terminal filament of the caudal lamellae.","PeriodicalId":50297,"journal":{"name":"International Journal of Odonatology","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2020-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/13887890.2020.1755377","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41931566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-06-17DOI: 10.1080/13887890.2020.1768156
Kudzai Mafuwe, S. Moyo
We examined the diversity and potential drivers of dragonfly distribution in a biodiversity hotspot of Southern Africa (Eastern Highlands, Zimbabwe) by surveying 30 sites (13 lentic and 17 lotic habitats) located within this region. Additionally, we identified the anthropogenic factors that may threaten Odonata diversity and abundance. Our results revealed that 27 odonate species are associated with dams and ponds, one species is associated with streams and four species are associated with swamp forests. Considering odonate diversity between protected and unprotected areas, we found significantly higher diversity of odonates in streams in protected areas compared to non-protected areas. Broadly, we found anthropogenic activities (e.g. commercial exotic tree plantations, mining activities, vegetation clearing) possibly affect Odonata diversity (by decreasing abundance and diversity) compared to those within protected and undisturbed habitats. Our results reveal that several human activities like human encroachment into riverine habitats potentially threaten the existence of freshwater species in this biodiversity hotspot and biodiversity hotspots elsewhere.
{"title":"Dragonfly (Odonata) community structure in the Eastern Highlands Biodiversity Hotspot of Zimbabwe: potential threats of land use changes on freshwater invertebrates","authors":"Kudzai Mafuwe, S. Moyo","doi":"10.1080/13887890.2020.1768156","DOIUrl":"https://doi.org/10.1080/13887890.2020.1768156","url":null,"abstract":"We examined the diversity and potential drivers of dragonfly distribution in a biodiversity hotspot of Southern Africa (Eastern Highlands, Zimbabwe) by surveying 30 sites (13 lentic and 17 lotic habitats) located within this region. Additionally, we identified the anthropogenic factors that may threaten Odonata diversity and abundance. Our results revealed that 27 odonate species are associated with dams and ponds, one species is associated with streams and four species are associated with swamp forests. Considering odonate diversity between protected and unprotected areas, we found significantly higher diversity of odonates in streams in protected areas compared to non-protected areas. Broadly, we found anthropogenic activities (e.g. commercial exotic tree plantations, mining activities, vegetation clearing) possibly affect Odonata diversity (by decreasing abundance and diversity) compared to those within protected and undisturbed habitats. Our results reveal that several human activities like human encroachment into riverine habitats potentially threaten the existence of freshwater species in this biodiversity hotspot and biodiversity hotspots elsewhere.","PeriodicalId":50297,"journal":{"name":"International Journal of Odonatology","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2020-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/13887890.2020.1768156","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46036492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-06-16DOI: 10.1080/13887890.2020.1733328
G. Rüppell, Dagmar Hilfert-Rüppell, B. Schneider, Hanna Dedenbach
Frogs are important predators of Odonata. We investigated frogs catching Odonata prey by means of slow-motion filming in the field in order to understand the prey–predator interactions. In particular, we aimed to analyse kinematics of captures, and of Odonata fleeing, through evaluation of frame-by-frame filming; 122 (20%) of 613 events were analysed. While dragonflies were ovipositing, frogs were sitting and waiting motionless, or they sneaked slowly towards the intended prey. The speed of the lashing tongue was much higher than the start and flight velocities of Odonata during escape attempts. The reaction time of Odonata was around 45×10–3 s, and it was not correlated to capture rate. The fleeing behaviour of Odonata cannot be considered to be stereotypical. The usual fleeing measure was to evade sideways to the jump direction of the frog, with the individual turning their body to one side and flying away from the frog. Perched odonates escaped by overturning to one side, sometimes falling into the water, or by flying in a loop. To escape, individuals were observed flying backward with the head down, in two cases. From the video clips, capture rates were counted. Large Anisoptera escaped more often than small Zygoptera. Anax imperator females mostly escaped after capture by fighting with strong wing beats, even when pulled under water by the frog.
{"title":"On the firing line – interactions between hunting frogs and Odonata","authors":"G. Rüppell, Dagmar Hilfert-Rüppell, B. Schneider, Hanna Dedenbach","doi":"10.1080/13887890.2020.1733328","DOIUrl":"https://doi.org/10.1080/13887890.2020.1733328","url":null,"abstract":"Frogs are important predators of Odonata. We investigated frogs catching Odonata prey by means of slow-motion filming in the field in order to understand the prey–predator interactions. In particular, we aimed to analyse kinematics of captures, and of Odonata fleeing, through evaluation of frame-by-frame filming; 122 (20%) of 613 events were analysed. While dragonflies were ovipositing, frogs were sitting and waiting motionless, or they sneaked slowly towards the intended prey. The speed of the lashing tongue was much higher than the start and flight velocities of Odonata during escape attempts. The reaction time of Odonata was around 45×10–3 s, and it was not correlated to capture rate. The fleeing behaviour of Odonata cannot be considered to be stereotypical. The usual fleeing measure was to evade sideways to the jump direction of the frog, with the individual turning their body to one side and flying away from the frog. Perched odonates escaped by overturning to one side, sometimes falling into the water, or by flying in a loop. To escape, individuals were observed flying backward with the head down, in two cases. From the video clips, capture rates were counted. Large Anisoptera escaped more often than small Zygoptera. Anax imperator females mostly escaped after capture by fighting with strong wing beats, even when pulled under water by the frog.","PeriodicalId":50297,"journal":{"name":"International Journal of Odonatology","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2020-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/13887890.2020.1733328","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44558319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-04-02DOI: 10.1080/13887890.2019.1700174
J. Ehlert, Ângelo Parise Pinto
Taxonomic, morphological and distributional data on three species of the rare South American corduliid genus Lauromacromia Geijskes, 1970 are updated based on specimens collected recently and old specimens deposited in natural history collections. The female of the poorly known Lauromacromia luismoojeni (Santos, 1967), an endemic species from the Brazilian Cerrado, is illustrated, described and diagnosed for the first time, based on a single specimen from the municipality of Mineiros, state of Goiás. This species was previously known from two males from two different localities: the original description from Distrito Federal, and an additional record from the state of Mato Grosso do Sul. New state records to Brazil are given for L. dubitalis (Fraser, 1939) (Amazonia domain of the state of Amapá), L. luismojenni (Cerrado domain of the state of Goiás), and for L. picinguaba Carvalho et al., 2004 (Atlantic Forest domain of the state of Paraná). Finally, the current knowledge about the genus is discussed.
{"title":"Additions to the dragonfly genus Lauromacromia, with description of the female of Lauromacromia luismoojeni and new distributional records (Odonata: Corduliidae s.l.)","authors":"J. Ehlert, Ângelo Parise Pinto","doi":"10.1080/13887890.2019.1700174","DOIUrl":"https://doi.org/10.1080/13887890.2019.1700174","url":null,"abstract":"Taxonomic, morphological and distributional data on three species of the rare South American corduliid genus Lauromacromia Geijskes, 1970 are updated based on specimens collected recently and old specimens deposited in natural history collections. The female of the poorly known Lauromacromia luismoojeni (Santos, 1967), an endemic species from the Brazilian Cerrado, is illustrated, described and diagnosed for the first time, based on a single specimen from the municipality of Mineiros, state of Goiás. This species was previously known from two males from two different localities: the original description from Distrito Federal, and an additional record from the state of Mato Grosso do Sul. New state records to Brazil are given for L. dubitalis (Fraser, 1939) (Amazonia domain of the state of Amapá), L. luismojenni (Cerrado domain of the state of Goiás), and for L. picinguaba Carvalho et al., 2004 (Atlantic Forest domain of the state of Paraná). Finally, the current knowledge about the genus is discussed.","PeriodicalId":50297,"journal":{"name":"International Journal of Odonatology","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2020-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/13887890.2019.1700174","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45383996","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-04-02DOI: 10.1080/13887890.2020.1739150
A. Bálazs, Z. Fric, O. Holuša
In 2017, we investigated the population dynamics and flying activity of the south-east European endemic dragonfly species Cordulegaster heros Theischinger, 1979. This research was conducted in the southern part of Central Slovakia in the Revúcka vrchovina Upland at a submountainous stream called Drienok. The mark-release-recapture method was applied to study the population. Cordulegaster heros was observed 775 times during the midsummer season. We found out that the species has bimodal diurnal activity pattern with a highest peak from 17:00 until 19:00 hours, but the species had a short peak before noon as well. The differences between sexes in the sense of entering new individuals to the population were low during the main flying period. Estimated population size for males surpassed the population size of females. Probability of capture decreased by the end of the flying season without differences in sexes. This article is the first on the flying activity and population dynamics of Cordulegaster heros.
{"title":"Flying activity and population dynamics of Cordulegaster heros Theischinger, 1979 (Insecta: Odonata: Cordulegastridae) in Slovakia","authors":"A. Bálazs, Z. Fric, O. Holuša","doi":"10.1080/13887890.2020.1739150","DOIUrl":"https://doi.org/10.1080/13887890.2020.1739150","url":null,"abstract":"In 2017, we investigated the population dynamics and flying activity of the south-east European endemic dragonfly species Cordulegaster heros Theischinger, 1979. This research was conducted in the southern part of Central Slovakia in the Revúcka vrchovina Upland at a submountainous stream called Drienok. The mark-release-recapture method was applied to study the population. Cordulegaster heros was observed 775 times during the midsummer season. We found out that the species has bimodal diurnal activity pattern with a highest peak from 17:00 until 19:00 hours, but the species had a short peak before noon as well. The differences between sexes in the sense of entering new individuals to the population were low during the main flying period. Estimated population size for males surpassed the population size of females. Probability of capture decreased by the end of the flying season without differences in sexes. This article is the first on the flying activity and population dynamics of Cordulegaster heros.","PeriodicalId":50297,"journal":{"name":"International Journal of Odonatology","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2020-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/13887890.2020.1739150","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45208608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-04-02DOI: 10.1080/13887890.2020.1752829
Jareth Román-Heracleo, R. Novelo-Gutiérrez, M. Springer
The larva of Psaironeura is formally described for the first time, based upon reared specimens of Psaironeura angeloi from the Tirimbina Biological Reserve, Sarapiquí, Heredia Province, Costa Rica. Detailed illustrations are also provided. The larva is characterized by a slender dark brown body, premental setae 2+1, six palpal setae, male cerci globose, and caudal lamellae markedly slender, 3.5–4 times longer than wide, with tips bi- or trilobated.
{"title":"First description of the larva of Psaironeura, based on specimens of P. angeloi from Costa Rica (Odonata: Coenagrionidae: Protoneurinae), with a key to the genera of Central American Protoneurinae","authors":"Jareth Román-Heracleo, R. Novelo-Gutiérrez, M. Springer","doi":"10.1080/13887890.2020.1752829","DOIUrl":"https://doi.org/10.1080/13887890.2020.1752829","url":null,"abstract":"The larva of Psaironeura is formally described for the first time, based upon reared specimens of Psaironeura angeloi from the Tirimbina Biological Reserve, Sarapiquí, Heredia Province, Costa Rica. Detailed illustrations are also provided. The larva is characterized by a slender dark brown body, premental setae 2+1, six palpal setae, male cerci globose, and caudal lamellae markedly slender, 3.5–4 times longer than wide, with tips bi- or trilobated.","PeriodicalId":50297,"journal":{"name":"International Journal of Odonatology","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2020-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/13887890.2020.1752829","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45498231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-04-02DOI: 10.1080/13887890.2020.1739567
Fredy Palacino-Rodríguez, Mariano Altamiranda-Saavedra, Diego Andrés Palacino, Andrea Carolina Penagos
The behavior of Mesamphiagrion laterale (Selys, 1876) is described based upon 2430 hours of observation. A total of 2820 individuals were observed for 270 days from 2014 to 2015 using mark-recapture. Probabilities of resight, highest reproductive activity, time-perch and time of perch-temperature were statistically analyzed. Mesamphiagrion laterale is not a territorial species, the individuals perch on grass, trees, garbage, ground, and rocks, they feed on hemipterans, mosquitoes, spiders and other damselflies, and are prey to spiders and birds. Conspecific siege and interspecific interactions by perch were observed. No courtship was observed. During tandem, which lasted for 3–90 min, the ventral side of the male’s abdominal segment 2 was in contact with the female’s abdominal segments 8–10 until a wheel was formed. We observed three tandem pair combinations: sexually mature males and females, immature males with mature females, and immature males and females. While copulation lasted from 7 to 20 min, oviposition lasted from 12 to 15 min. Irrespective of male presence, oviposition occurred in submerged or emerged areas of Eichornia crassipes. We recorded the highest reproductive activity between 12:00 and 12:35 (Colombia Time-COT, UTC-5). Above 20°C, a larger perching area close to the water allows more reproductive events. However, a more extensive canopy cover impedes achieving optimal reproductive temperatures. Species interactions within this community may be explained by temporal and spatial niche partitioning.
{"title":"Ecology of Mesamphiagrion laterale (Odonata: Coenagrionidae): abundance, reproduction and interactions with co-occurring species","authors":"Fredy Palacino-Rodríguez, Mariano Altamiranda-Saavedra, Diego Andrés Palacino, Andrea Carolina Penagos","doi":"10.1080/13887890.2020.1739567","DOIUrl":"https://doi.org/10.1080/13887890.2020.1739567","url":null,"abstract":"The behavior of Mesamphiagrion laterale (Selys, 1876) is described based upon 2430 hours of observation. A total of 2820 individuals were observed for 270 days from 2014 to 2015 using mark-recapture. Probabilities of resight, highest reproductive activity, time-perch and time of perch-temperature were statistically analyzed. Mesamphiagrion laterale is not a territorial species, the individuals perch on grass, trees, garbage, ground, and rocks, they feed on hemipterans, mosquitoes, spiders and other damselflies, and are prey to spiders and birds. Conspecific siege and interspecific interactions by perch were observed. No courtship was observed. During tandem, which lasted for 3–90 min, the ventral side of the male’s abdominal segment 2 was in contact with the female’s abdominal segments 8–10 until a wheel was formed. We observed three tandem pair combinations: sexually mature males and females, immature males with mature females, and immature males and females. While copulation lasted from 7 to 20 min, oviposition lasted from 12 to 15 min. Irrespective of male presence, oviposition occurred in submerged or emerged areas of Eichornia crassipes. We recorded the highest reproductive activity between 12:00 and 12:35 (Colombia Time-COT, UTC-5). Above 20°C, a larger perching area close to the water allows more reproductive events. However, a more extensive canopy cover impedes achieving optimal reproductive temperatures. Species interactions within this community may be explained by temporal and spatial niche partitioning.","PeriodicalId":50297,"journal":{"name":"International Journal of Odonatology","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2020-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/13887890.2020.1739567","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46948675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-04-02DOI: 10.1080/13887890.2020.1737585
F. Lozano, A. Palacio, L. Ramos, J. Muzón
An updated checklist of the 282 species of Odonata known to occur in Argentina is presented along with distributional information by province and ecoregion. Ten new records for the country and 87 new provincial records are provided. At present, 17 species of Odonata are considered endemic to Argentina, and distribution maps for each of them are provided. Information on larvae and conservation status according to the IUCN Red List of Threatened species is also provided; there are still 98 larvae unknown and 169 species unassessed.
{"title":"The Odonata of Argentina: state of knowledge and updated checklist","authors":"F. Lozano, A. Palacio, L. Ramos, J. Muzón","doi":"10.1080/13887890.2020.1737585","DOIUrl":"https://doi.org/10.1080/13887890.2020.1737585","url":null,"abstract":"An updated checklist of the 282 species of Odonata known to occur in Argentina is presented along with distributional information by province and ecoregion. Ten new records for the country and 87 new provincial records are provided. At present, 17 species of Odonata are considered endemic to Argentina, and distribution maps for each of them are provided. Information on larvae and conservation status according to the IUCN Red List of Threatened species is also provided; there are still 98 larvae unknown and 169 species unassessed.","PeriodicalId":50297,"journal":{"name":"International Journal of Odonatology","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2020-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/13887890.2020.1737585","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49658275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-04-02DOI: 10.1080/13887890.2020.1760949
X. Chen, Xin Yu
The final stadium larva of Calicnemia gulinensis is described here for the first time. The larva can be distinguished from other known species of the genus Calicnemia by the arrangement of setae on premental edges and the number of setae on labial palpi. The important morphological characters of the caudal gills and the possible functional adaptation are discussed briefly.
{"title":"A description of the final stadium larva of Calicnemia gulinensis Yu & Bu, 2008 (Odonata: Platycnemididae)","authors":"X. Chen, Xin Yu","doi":"10.1080/13887890.2020.1760949","DOIUrl":"https://doi.org/10.1080/13887890.2020.1760949","url":null,"abstract":"The final stadium larva of Calicnemia gulinensis is described here for the first time. The larva can be distinguished from other known species of the genus Calicnemia by the arrangement of setae on premental edges and the number of setae on labial palpi. The important morphological characters of the caudal gills and the possible functional adaptation are discussed briefly.","PeriodicalId":50297,"journal":{"name":"International Journal of Odonatology","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2020-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/13887890.2020.1760949","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45864640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-03-02DOI: 10.1080/13887890.2020.1718784
S. Manasov, F. Suhling
We investigated the effects of the presence of bladderwort plants on survival of early instar larvae of one coenagrionid and two libellulids in laboratory experiments. In all three species survival was reduced compared to treatments with a non-carnivorous submerged plant, with effective mortality that could be related to bladderwort being 19–45% dependent on the prey species. Individuals of all species were found in capture bladders. We also recorded the microhabitat use of the early instar larvae and found that the species with highest use of vegetation had highest mortality due to bladderwort. We conclude that bladderwort may have effects on odonate larvae that translate into natural conditions and we discuss factors that may affect predation by bladderwort on odonates in the field.
{"title":"Hiding among traps? Mortality of early instar odonate larvae in the presence of bladderwort plants","authors":"S. Manasov, F. Suhling","doi":"10.1080/13887890.2020.1718784","DOIUrl":"https://doi.org/10.1080/13887890.2020.1718784","url":null,"abstract":"We investigated the effects of the presence of bladderwort plants on survival of early instar larvae of one coenagrionid and two libellulids in laboratory experiments. In all three species survival was reduced compared to treatments with a non-carnivorous submerged plant, with effective mortality that could be related to bladderwort being 19–45% dependent on the prey species. Individuals of all species were found in capture bladders. We also recorded the microhabitat use of the early instar larvae and found that the species with highest use of vegetation had highest mortality due to bladderwort. We conclude that bladderwort may have effects on odonate larvae that translate into natural conditions and we discuss factors that may affect predation by bladderwort on odonates in the field.","PeriodicalId":50297,"journal":{"name":"International Journal of Odonatology","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2020-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/13887890.2020.1718784","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48858824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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