Freshwater Crayfish最新文献

Upper Thermal Tolerances of Two Native and One Invasive Crayfish in Missouri, USA 美国密苏里州两种本地螯虾和一种外来螯虾的最高耐热能力

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Freshwater Crayfish Pub Date : 2023-12-15 DOI: 10.5869/fc.2023.v28-1.27

Jacob T. Westhoff, Hisham A. Abdelrahman, James A. Stoeckel

{"title":"Upper Thermal Tolerances of Two Native and One Invasive Crayfish in Missouri, USA","authors":"Jacob T. Westhoff, Hisham A. Abdelrahman, James A. Stoeckel","doi":"10.5869/fc.2023.v28-1.27","DOIUrl":"https://doi.org/10.5869/fc.2023.v28-1.27","url":null,"abstract":"\u0000 The spread of invasive crayfish requires invaded habitats to be thermally suitable, and differences in\u0000thermal tolerances among species could provide thermal refugia for native crayfish affected by the\u0000invader. We estimated upper thermal tolerances for the invasive Faxonius hylas and native F. peruncus\u0000and F. quadruncus in Missouri, USA, using critical thermal maxima (CTmax) methodology to determine\u0000if there were ecologically exploitable differences in estimates among species and if areas within their\u0000distributional ranges exceed their thermal maximums. Estimates of CTmax did not differ among species\u0000or sexes but differed among groups acclimated to different temperatures. Additionally, crayfish size had\u0000a small, yet significant effect on CTmax estimates with smaller crayfish having lower CTmax estimates than\u0000larger crayfish. The similarity among CTmax estimates indicates that for at least upper thermal tolerance,\u0000areas thermally available to the native species will also be thermally suitable for the invader. We did not\u0000observe water temperatures in the field that exceeded CTmax estimates for any species. However, areas\u0000within the mainstem St. Francis River did have warming tolerance estimates of less than 5°C, indicating\u0000that establishment of the invader in the mainstem could be limited by water temperature.","PeriodicalId":29940,"journal":{"name":"Freshwater Crayfish","volume":"18 7","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138970630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Stream-Dwelling Crayfishes of the North Fork of the White River Drainage of Missouri, with Additional Notes from Arkansas, USA 密苏里州白河流域北叉的溪栖蜡鱼，以及来自美国阿肯色州的补充说明

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Freshwater Crayfish Pub Date : 2023-12-15 DOI: 10.5869/fc.2023.v28-1.11

R. DiStefano, Erica L. Ascani, Robert B. Bratcher, Ashley N. Hrdina, Emile A. Ellingsworth, Brian K. Watson

{"title":"Stream-Dwelling Crayfishes of the North Fork of the White River Drainage of Missouri, with Additional Notes from Arkansas, USA","authors":"R. DiStefano, Erica L. Ascani, Robert B. Bratcher, Ashley N. Hrdina, Emile A. Ellingsworth, Brian K. Watson","doi":"10.5869/fc.2023.v28-1.11","DOIUrl":"https://doi.org/10.5869/fc.2023.v28-1.11","url":null,"abstract":"\u0000 Comprehensive surveys are critical to conserve and monitor crayfish communities, imperiled species, and detect crayfish invasions. The Missouri portion of the North Fork White River drainage (MONFWR) was never comprehensively surveyed, but adjacent drainage surveys suggested it could harbor species of conservation concern (SOCC). We surveyed the MONFWR to determine crayfish species richness, distributions of potential SOCC, and potential invasive species. We included recent sampling of the Arkansas portion of the drainage for a more holistic assessment of the entire drainage. We examined potential changes in crayfish communities after three decades at 22 previously sampled MONFWR locations. We also collected the first habitat association data for the endemic, Faxonius longidigitus. We detected eight taxa; none that were not known from the drainage. Faxonius neglectus chaenodactylus and Cambarus hubbsi were SOCC; F. n. chaenodactylus was common and abundant in the MONFWR; C. hubbsi was detected at only one site in Arkansas. Faxonius neglectus neglectus and Faxonius virilis were each detected only once and are likely introduced. Intermittent streams harbored diversity and abundance rivaling perennial segments. We observed no notable temporal differences between 22 historical and current samples. Faxonius longidigitus, detected at few sites in low numbers, was associated with deeper waters and larger substrates.","PeriodicalId":29940,"journal":{"name":"Freshwater Crayfish","volume":"265 29‐32","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138996961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of Three Monitoring Methods for the Native European Crayfish Austropotamobius torrentium 评估针对欧洲本地螯虾 Austropotamobius torrentium 的三种监测方法

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Freshwater Crayfish Pub Date : 2023-12-15 DOI: 10.5869/fc.2023.v28-1.1

Samuel Auer, Wolfram Graf, Anne Hartmann, P. Leitner, Daniela Sint, Michale Traugott, Stefan Auer

{"title":"Evaluation of Three Monitoring Methods for the Native European Crayfish Austropotamobius torrentium","authors":"Samuel Auer, Wolfram Graf, Anne Hartmann, P. Leitner, Daniela Sint, Michale Traugott, Stefan Auer","doi":"10.5869/fc.2023.v28-1.1","DOIUrl":"https://doi.org/10.5869/fc.2023.v28-1.1","url":null,"abstract":"\u0000 For the stone crayfish, a threatened species listed in the Habitats Directive in Annex II and V, three\u0000monitoring methods were evaluated: hand capture by day, hand capture by night and eDNA sampling\u0000respectively. The lack of a standardized sampling method in Austria and the simultaneous obligation to\u0000monitor and report on the status of protected species requires therefore an evaluation of the different\u0000techniques. However, data show that day sampling massively favored the observation of juveniles\u0000whereas night sampling obtained higher shares of adults and males. Moreover, organic layer primarily\u0000determines the applicability of hand capturing methods. If the share of organic layer exceeded 40%, night\u0000sampling was more effective. In brooks with low amount of organic layer, no notable divergences were\u0000found. eDNA sampling provided reliable presence-absence data but cannot fully replace hand capturing\u0000methods. Data indicate that eDNA detectability depends probably on the discharge level. Below 1.5\u0000L·s-1 eDNA detection failed but provided reliable results in sections with a higher discharge regime.\u0000In summary, all three methods are appropriate for crayfish surveillance programs, but must be applied\u0000according to the sampling design appropriate for the research questions and with an awareness of their\u0000strengths and weaknesses.","PeriodicalId":29940,"journal":{"name":"Freshwater Crayfish","volume":"118 4","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138999420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermal Tolerance of the Piedmont Blue Burrower Cambarus harti and Sympatric Native and Invasive Crayfish Species of the Southeastern United States 美国东南部皮埃蒙特蓝色穴居螯虾 Cambarus harti 和同域本地及外来入侵螯虾物种的热耐受性

IF 0.8

Freshwater Crayfish Pub Date : 2023-12-15 DOI: 10.5869/fc.2023.v28-1.37

Kaelyn L. Fogelman, Kayla Boyd, Hisham A. Abdelrahman, C. Figiel, James A. Stoeckel

{"title":"Thermal Tolerance of the Piedmont Blue Burrower Cambarus harti and Sympatric Native and Invasive Crayfish Species of the Southeastern United States","authors":"Kaelyn L. Fogelman, Kayla Boyd, Hisham A. Abdelrahman, C. Figiel, James A. Stoeckel","doi":"10.5869/fc.2023.v28-1.37","DOIUrl":"https://doi.org/10.5869/fc.2023.v28-1.37","url":null,"abstract":"\u0000 The southeast United States is the epicenter of global crayfish biodiversity, but these species are among\u0000some of the most threatened in the world. Life history and biological trait data deficiencies, particularly\u0000of burrowing crayfish species, hampers efforts for accurately assessing imperilment rates and informing\u0000conservation efforts. Rising temperatures are a threat to aquatic ectotherms and it is important to evaluate\u0000crayfish tolerances to determine if they are at or near their upper thermal limits. We conducted dynamic\u0000temperature ramps to evaluate the temperatures at which ecological death (critical thermal maximum;\u0000CTM) and physiological death (upper thermal limit; UTL) occurred for the imperiled and narrowly\u0000endemic primary burrower Cambarus harti and three common, sympatric species C. latimanus, C. striatus,\u0000and Procambarus clarkii. All species differed in CTM with C. latimanus being the most sensitive (35.0°C),\u0000C. striatus (37.0°C) and C. harti (37.8°C) having intermediate tolerance, and P. clarkii being the most\u0000tolerant (39.0°C). The UTL of all species ranged from 39.4 – 39.8°C. We found no evidence that C. harti,\u0000a rare primary burrower, will require more restrictive acute thermal guidelines for protection compared\u0000to more common sympatric secondary burrowers.","PeriodicalId":29940,"journal":{"name":"Freshwater Crayfish","volume":"86 12","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138999509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recent Range Records of Crayfish (Faxonius) From Far North Ontario, Canada 加拿大安大略省极北地区小龙虾（Faxonius）的最新分布记录

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Freshwater Crayfish Pub Date : 2023-12-15 DOI: 10.5869/fc.2023.v28-1.63

Jane Devlin, D. Beresford

引用次数: 0

Observations on the Morphology of Museum Specimens of the European Astacidae: Austropotamobius fulcisianus (Ninni, 1886) and Austropotamobius torrentium (von Paula Schrank, 1803) (Crustacea: Decapoda) 欧洲魟科博物馆标本形态观察：Austropotamobius fulcisianus (Ninni, 1886) 和 Austropotamobius torrentium (von Paula Schrank, 1803) (Crustacea: Decapoda)

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Freshwater Crayfish Pub Date : 2023-12-15 DOI: 10.5869/fc.2023.v28-1.45

Tadashi Kawai, G. Innocenti, Elena Tricarico

引用次数: 0

The Life History of the Rusty Crayfish (Faxonius rusticus) in a Small Southern Ontario Stream 南安大略小溪中生锈小龙虾(Faxonius rusticus)的生活史

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Freshwater Crayfish Pub Date : 2022-12-31 DOI: 10.5869/fc.2022.v27-1.17

P. Hamr, N. Verhoeff

{"title":"The Life History of the Rusty Crayfish (Faxonius rusticus) in a Small Southern Ontario Stream","authors":"P. Hamr, N. Verhoeff","doi":"10.5869/fc.2022.v27-1.17","DOIUrl":"https://doi.org/10.5869/fc.2022.v27-1.17","url":null,"abstract":"\u0000 An intensive, long-term study of the life history of O. rusticus was conducted in Fleetwood Creek, a small stream in Southern Ontario, Canada. The reproductive biology as well as molting cycle were investigated and the larval development and morphology was documented in detail for the first time in this important invasive species. Despite recent climate change effects, such as higher maximum temperatures as well as significant short term temperature fluctuations, the overall life cycle does not appear significantly different from previous studies conducted in the 1980s and 1990s but the crayfish activity appeared to be affected by temperature fluctuations associated with climate change. Mating and spawning occurred in the first week of April. The onset of mating and spawning occurred at temperatures of 9-10°C which was somewhat higher than previously reported for this species in this region of Ontario. Abdominal eggs were carried for approximately 7-weeks and larval stages remain attached to their mothers between 12 and 15 days. Free-living young were first observed in early June. Maturity is attained within the first summer, at 19-20 mm carapace length, in at least 30% of the young-of-the-year and most individuals of both sexes are mature at 25 mm carapace length. Monitoring was conducted weekly and daily during molting and spawning periods in spring 2021 and 2022, which makes this study unique with respect to most other life history field studies.","PeriodicalId":29940,"journal":{"name":"Freshwater Crayfish","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47504619","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

How Well Do Protected Areas Safeguard Endangered White-Clawed Crayfish in Croatia? 克罗地亚的保护区如何保护濒危的白爪小龙虾？

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Freshwater Crayfish Pub Date : 2022-12-31 DOI: 10.5869/fc.2022.v27-1.69

I. Maguire, Leona Lovrenčić, M. Temunović

引用次数: 0

First Records of White River Crayfish (Procambarus acutus) in Canada on Pelee Island, Ontario, with notes on other crayfish species present and their habitats 加拿大安大略省贝利岛白河小龙虾（Procambarus acute us）的首次记录，以及对其他小龙虾物种及其栖息地的注释

IF 0.8

Freshwater Crayfish Pub Date : 2022-12-31 DOI: 10.5869/fc.2022.v27-1.9

T. Hossie, P. Hamr

{"title":"First Records of White River Crayfish (Procambarus acutus) in Canada on Pelee Island, Ontario, with notes on other crayfish species present and their habitats","authors":"T. Hossie, P. Hamr","doi":"10.5869/fc.2022.v27-1.9","DOIUrl":"https://doi.org/10.5869/fc.2022.v27-1.9","url":null,"abstract":"\u0000 Freshwater crayfish rank among the most imperilled groups and play several critical roles in freshwater ecosystems, yet survey efforts remain limited throughout much of Canada and North America. Inadequate survey and monitoring efforts render our ecosystems vulnerable to the introduction and spread of harmful invasive species which can be difficult or impossible to control following establishment. During surveys targeting salamander larvae across Pelee Island, Ontario we incidentally captured crayfish and identified them to species. Three species were detected including two native species known only from collections in the 1960s (Creaserinus fodiens, Faxonius immunis) as well as the non-native White River Crayfish (Procambarus acutus) which has not been documented previously in Canada. Our oldest record of P. acutus is from 2015, and the species currently appears to be widespread and well established on Pelee Island and has also recently been recorded in Six Mile Lake on the Canadian Shield. We provide preliminary data on the aquatic habitats where each species was found on Pelee Island and strongly encourage additional monitoring efforts combined with targeted education efforts to prevent the spread of P. acutus to the Ontario mainland.","PeriodicalId":29940,"journal":{"name":"Freshwater Crayfish","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47267561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Morphological Observation of Museum Specimens of Astacus astacus and Pontastacus leptodactylus 石竹和细趾蓬竹博物馆标本的形态观察

IF 0.8

Freshwater Crayfish Pub Date : 2022-12-31 DOI: 10.5869/fc.2022.v27-1.49

T. Kawai, J. Patoka

引用次数: 0