Population Dynamics and Productivity of the Crayfish, Orconectes virilis, in a Marl Lake

Momot, Walter T.

doi:10.2307/2423370

Cited by 97 publications

(51 citation statements)

References 24 publications

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“…Em estudos com lagostins a proporção sexual de 1:1 tem sido verificada para diversas espécies (MOMOT 1967, PRINS 1968, ABRAHAMSSON 1971, PRICE & PAYNE 1984. Entretanto, segundo os autores, esta proporção é alterada nos grupos etários maiores devido à maior mortalidade de fêmeas, que pode ter como causa o stress provocado pela postura e incubação dos ovos.…”

Section: Discussionunclassified

“…Entretanto os autores registraram a menor fêmea ovígera com 26,5 mm de comprimento. No lagostim Cambaridae de água doce da América do Norte , Orconectes virilis (Hagen, 1870), a reprodução inicia no segundo ano de vida (MOMOT 1967). Já nos lagostins Astacidae, Astacus astacus (Linnaeus, 1758) e Pacifastacus leniusculus (Dana, 1852), a maturação sexual de fêmeas ocorre aos quatro anos de idade (ABRAHAMSSON 1971, ABRAHAMSSON & GOLDMAN 1970.…”

Section: Discussionunclassified

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Estrutura populacional e biologia reprodutiva de Parastacus defossus (Crustacea: Decapoda: Parastacidae)

Noro

Buckup

2008

Rev. Bras. Zool.

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Este trabalho descreve a estrutura populacional e aspectos da biologia reprodutiva de Parastacus defossus Faxon, 1898, uma espécie com hábito fossorial que passa sua vida no interior de galerias subterrâneas. Aproximadamente 30 exemplares foram coletados mensalmente, de janeiro de 2003 a agosto de 2005 na região do Lami, Município de Porto Alegre, Rio Grande do Sul, Brasil. Registrou-se o comprimento mínimo, máximo e médio da carapaça de machos, fêmeas, juvenis e animais com ootestículo. Analisou-se a distribuição de freqüência por classes de tamanho, a proporção sexual, o recrutamento e o período reprodutivo. Foram amostrados um total de 766 exemplares, 315 machos (41,12%), 278 fêmeas (36,30%), 166 juvenis (21,67%) e sete animais com ootestículo (0,91%). Machos e fêmeas estiveram presentes durante todos os meses de amostragem e em todas as classes de tamanho, sendo que a maior freqüência de indivíduos foi registrada nas classes de tamanho ente 24 a 30 mm. A maior freqüência de juvenis foi observada na primavera/2003 e verão/2005. Diferenças significativas no tamanho de machos e fêmeas foram registradas apenas nas classes de tamanho entre 26-30 mm. A proporção sexual no período amostral foi de 1:0,88 (x² = 2,3; p > 0,05) e entre as classes de tamanho foram constatadas diferenças significativas nas classes de tamanho 26-28 mm (x² = 5,43; p < 0,05) e 28-30 mm (x² = 4,77; p < 0,05) de comprimento de carapaça, nas quais os machos foram mais freqüentes. Das 278 fêmeas coletadas, apenas 17 estavam ovígeras (6,11%), sendo a estação reprodutiva bem definida na primavera.

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Section: Discussionunclassified

Estrutura populacional e biologia reprodutiva de Parastacus defossus (Crustacea: Decapoda: Parastacidae)

Noro

Buckup

2008

Rev. Bras. Zool.

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“…) (Momot, 1967;Weagle and Ozburn, 1972;Corey, 1987), high aggressiveness (Bovbjerg, 1970), extensive burrowing activity (Hazlett et al, 1974;Hazlett and Rittschof, 1985), and ability to withstand low temperatures (Williams et al, 2011). Indeed, virile crayfish showed the potential to rapidly invade new waterbodies and outcompete native congeners in North America (Phillips et al, 2009;Swecker et al, 2010).…”

Section: Figure 10mentioning

confidence: 99%

Continental-wide distribution of crayfish species in Europe: update and maps

Kouba

Petrusek

Kozák

2014

Knowl. Managt. Aquatic Ecosyst.

265

312

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Key-words: crayfish distribution, indigenous species, invasive species, native range, mapsRecently published astacological studies substantially improved available data on distribution of crayfish in various European regions. At the same time, spread of invasive species has been recorded, additional nonindigenous species became established in various countries, and losses of populations of native species due to crayfish plague and other negative factors were observed. We overview recent advances in this knowledge, and provide updated colour maps of the distribution of all crayfish species present in Europe. These maps are originally based on the data from the Atlas of Crayfish in Europe published in 2006 as a result of the CRAYNET project, and were further updated from more recently published reports, grey literature, and especially thanks to contributions and feedback of over 70 specialists from 32 countries. Separate maps are available for all indigenous crayfish species in Europe as well as for three most widespread non-indigenous crayfish species. Additionally, two maps give locations of known findings of crayfish species introduced to Europe after 1980. These newly established alien species have so far restricted distributions; however, the frequency of recent reports suggests that findings of such species resulting from releases of aquarium pets will further increase. RÉSUMÉ Répartition à l'échelle continentale des espèces d'écrevisses en Europe : mises à jour et cartes Mots-clés :distribution des écrevisses, espèces indigènes, espèces envahissantes, Les études astacologiques récemment publiées ont sensiblement amélioré les données disponibles sur la distribution des écrevisses dans les différentes régions européennes. Dans le même temps, la propagation des espèces envahissantes a été enregistrée, des espèces non indigènes supplémentaires se sont établies dans différents pays, et des pertes de populations d'espèces indigènes en raison de la peste des écrevisses et d'autres facteurs négatifs ont été observées. Nous synthétisons les progrès récents dans la connaissance, et fournissons des cartes en couleur mises à jour de la distribution de toutes les espèces d'écre-visses présentes en Europe. Ces cartes sont à l'origine basées sur les données de l'Atlas des écrevisses en Europe publié en 2006 à la suite du projet CRAYNET, et ont ensuite été mises à jour à partir des études publiées plus récemment, de la

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“…Field studies, in contrast, have focused predominantly on ecological aspects of crayfish biology, including life history strategies (Momot, 1967;Hamr & Berrill, 1984;Flinders & Magoulick, 2006), population distributions (Berrill, 1978;Guiasu et al, 1996;Usio & Townsend, 2000), habitat use (Englund & Kupa, 2000;Renz & Breithaupt, 2000), and the impact of crayfish on benthic communities (Momot et al, 1978;Creed, 1994;Parkyn et al, 2001). Initial behavioural work has characterized movement patterns Gherardi et al, 1998, diel activity (Hazlett et al, 1979;, and mating behaviour of crayfish (Berrill & Arsenault, 1982Kawai & Saito, 2001).…”

Section: Introductionmentioning

confidence: 99%

Activity patterns, behavioural repertoires, and agonistic interactions of crayfish: A non-manipulative field study

Davis

Huber

2007

Behav

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SummaryAgonistic behaviour of crayfish has been studied extensively in laboratory settings where pairs or groups of individuals are allowed to interact within an experimental arena. Crayfish agonistic behaviour within its natural context, however, has received little attention to date. The present, non-manipulative field study explored activity patterns, behavioural repertoires, and agonistic encounters of rusty crayfish (Orconectes rusticus) during the summer months using continuous, 24-hour, underwater video recording at a series of representative field sites. Following the filming, crayfish within the vicinity of the camera site were captured and measured. Individual densities were high, reaching a maximum of 68 individuals/m 2 at some sites. Large crayfish predominantly inhabited deeper sections of the river and were mostly active at night, whereas small crayfish generally utilized the shallows and were active outside their burrows during day and dusk. Time outside their shelter was mainly used for feeding. Individuals frequently returned to the same shelter they had emerged from. Agonistic encounters were common events and generally occurred in the context of shelter acquisition or defense. Dyadic fighting progressed with escalating sequences of stereotyped aggressive acts. Furthermore, high intensities with unrestrained use of claws were seen in encounters between size-matched opponents. The results of this study allow us to root laboratory findings of crayfish aggression within a comprehensive, ethological framework and to consider ultimate consequences for individual fighting decisions and strategies.

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Population Dynamics and Productivity of the Crayfish, Orconectes virilis, in a Marl Lake

Cited by 97 publications

References 24 publications

Estrutura populacional e biologia reprodutiva de Parastacus defossus (Crustacea: Decapoda: Parastacidae)

Estrutura populacional e biologia reprodutiva de Parastacus defossus (Crustacea: Decapoda: Parastacidae)

Continental-wide distribution of crayfish species in Europe: update and maps

Activity patterns, behavioural repertoires, and agonistic interactions of crayfish: A non-manipulative field study

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