Length-weight Relationship, Body Morphometrics, and Condition Based on Sexual Stage in the Rusty Crayfish, Orconectes rusticus Girard, 1852 (Decapoda, Cambaridae) with Emphasis on Management Implication

Anderson, W. E.; Simon, Thomas P.

doi:10.4172/2150-3508.1000129

Cited by 10 publications

(2 citation statements)

References 21 publications

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“…The relationships between crayfish morphology and waterbody type were analyzed using principal component analysis (PCA) and generalized linear models (GLMs). Previous studies have reported that crayfish morphology is sexually dimorphic (Anderson and Simon 2015;Mazlum et al 2007). Therefore, we compared the morphology of male and female in the tributary and lake populations separately.…”

Section: Discussionmentioning

confidence: 99%

Environmental factors affecting the invasion success and morphological responses of a globally introduced crayfish in floodplain waterbodies

et al. 2019

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Floodplain ecosystems that are characterized by high habitat heterogeneity and hydrological connectivity are considered hotspots for freshwater biodiversity. However, these biodiversity-rich areas have been seriously threatened by biological invasions. The signal crayfish (Pacifastacus leniusculus) is listed as 100 of the world's worst invasive species, and is a major threat to freshwater biodiversity and ecosystem functioning. Here, we examined environmental factors relating to the invasion success of signal crayfish and their morphological responses in floodplain waterbodies. Classification and regression tree analyses showed that most of the influential factors differed between tributary and lake populations. In floodplain tributaries, the occurrence of crayfish was positively related with water temperature and abundance of leaf cover, while crayfish abundance was highest where large-wood was abundant. In floodplain lakes, crayfish were absent at oxygen-poor sites, and abundant at sites with high connectivity to a main channel. These results indicate that conservation practitioners should consider different environmental factors in accordance with strategies for invasive species management (i.e., offensive or defensive management). Furthermore, we demonstrated morphological differences between tributary and lake populations, with tributary crayfish having wider chelae. These morphological differences might have resulted 2 from the physical differences between the two types of waterbodies, facilitating the rapid invasion of signal crayfish to floodplain waterbodies. Our study showed that invasion-risk assessments should consider both environmental factors and morphological responses to new environments to understand invasion ecology and to form effective conservation plans and to prioritize management actions.

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Section: Discussionmentioning

confidence: 99%

Environmental factors affecting the invasion success and morphological responses of a globally introduced crayfish in floodplain waterbodies

et al. 2019

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“…Estimating length–weight relationships (LWRs) is useful when comparing life histories and morphological aspects of a fish population during different periods and regions and is a necessity for fish stock assessments and management (Anderson & Simon, ; Lavergne, Zajonz, & Sellin, ; Li, Jin, Shan, & Dai, ; Philips, ). This study describes the LWRs of four economically important teleost fishes caught in the South China Sea.…”

Section: Introductionmentioning

confidence: 99%

Length-weight relationships of four marine fish species caught in the South China Sea

Hou

Yan

et al. 2017

J Appl Ichthyol

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Length-weight relationships are described for four marine teleost fish species caught in the South China Sea. A total of 625 individuals were collected from April to August 2007 and November 2012 using a bottom trawl (mesh size, 3.9 cm) and longline fishing. The values of parameters a and b ranged from 0.004612 to 0.02137 and 3.019 to 3.371, respectively. The high r 2 values (all >.950) indicate that these relationships are robust and will be appropriate for use in fisheries management of these species.

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The unreliable concept of native range as applied to the distribution of the rusty crayfish (Faxonius rusticus) in North America

Guiașu

Labib

2021

Hydrobiologia

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The concept of native range in invasion biology is difficult to define since, in many cases, this type of range is unknown and cannot be determined. We investigate the uncertainties related to this concept by focusing on the distribution of Faxonius rusticus (Girard, 1852), also known as the rusty crayfish, which is perceived as possibly the worst invasive crayfish species in North America. In this study, we undertake a comprehensive literature review, which includes 430 studies published between 1852 and 2018, in order to analyze the native and introduced ranges of this species. The rusty crayfish was reported to occur in 33 states in the U.S.A. and 3 Canadian Provinces. Ten of these U.S. states and one Canadian Province have been included multiple times in both the native and the non-native ranges of this crayfish. The confusion regarding the limits and history of the native range of the rusty crayfish has implications for the conservation of this species in various jurisdictions. This review also demonstrates that even for intensely studied species perceived as invasive, we often do not have a clear understanding of essential concepts such as native and non-native range.

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Length-weight Relationship, Body Morphometrics, and Condition Based on Sexual Stage in the Rusty Crayfish, Orconectes rusticus Girard, 1852 (Decapoda, Cambaridae) with Emphasis on Management Implication

Cited by 10 publications

References 21 publications

Environmental factors affecting the invasion success and morphological responses of a globally introduced crayfish in floodplain waterbodies

Environmental factors affecting the invasion success and morphological responses of a globally introduced crayfish in floodplain waterbodies

Length-weight relationships of four marine fish species caught in the South China Sea

The unreliable concept of native range as applied to the distribution of the rusty crayfish (Faxonius rusticus) in North America

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