Morphometry of non-native black bullhead Ameiurus melas from Slovakia

2010 ◽  
Vol 5 (6) ◽  
pp. 888-893 ◽  
Author(s):  
Andrea Novomeská ◽  
Vladimír Kováč ◽  
Stanislav Katina
Keyword(s):  
Phenotypic Plasticity ◽  
Size Range ◽  
Morphological Variability ◽  
External Morphology ◽  
Ontogenetic Changes ◽  
Geometrical Analysis ◽  
Native Population ◽  
Morphometric Characters ◽  
Black Bullhead ◽  
Ameiurus Melas

AbstractThe study on the external morphology of the non-native black bullhead (Ameiurus melas) was carried out on a population from Slovakia, based on triple regression and geometrical analysis. The breakpoints distribution in distance-based morphometric characters indicated that black bullhead reached its definitive phenotype early in ontogeny. Ontogenetic changes in external morphology occurred continuously throughout the whole size-range of the sample examined, and inter-individual morphological variation was very low. Such uniformity may reflect the possible founder effect and/or little phenotypic plasticity of this non-native population. No sexual dimorphism was observed. This is the first detailed study on external morphology of the species, and as such it contributes to the assessment of phenotypic plasticity and/or overall morphological variability of black bullhead’s invasive populations.

Morphological variability of black bullhead Ameiurus melas in four non-native European populations

2013 ◽  
Vol 82 (4) ◽  
pp. 1103-1118 ◽  
Author(s):  
A. Novomeská ◽  
S. Katina ◽  
G. H. Copp ◽  
G. Pedicillo ◽  
M. Lorenzoni ◽  
...  
Keyword(s):  
Morphological Variability ◽  
Black Bullhead ◽  
European Populations ◽  
Ameiurus Melas

When did the black bullhead, Ameiurus melas (Teleostei: Ictaluridae), arrive in Poland?

2010 ◽  
Vol 18 (3) ◽  
Author(s):  
Michał Nowak ◽  
Ján Koščo ◽  
Paweł Szczerbik ◽  
Dominika Mierzwa ◽  
Włodzimierz Popek
Keyword(s):  
Black Bullhead ◽  
Ameiurus Melas

scholarly journals The first record of black bullhead Ameiurus melas (Pisces, Ictaluridae) in Serbian waters

2005 ◽  
Vol 57 (4) ◽  
pp. 307-308 ◽  
Author(s):  
G. Cvijanovic ◽  
Mirjana Lenhardt ◽  
Aleksandar Hegedis
Keyword(s):  
Standard Length ◽  
First Record ◽  
Side Channel ◽  
Gill Nets ◽  
Black Bullhead ◽  
Ameiurus Melas

On the 14th of June, 2005, in the Danube side channel "Jojkic" (N 44?50'33.1??, E 20?27'46.1??) near Belgrade, we recorded the presence of A. melas, ranging in weight (W) from 11.2 g to 135.6 g, and standard length (Ls) from 70 mm to 173 mm. Specimens were obtained from professional fishermen, who caught them with gill nets, as well from sport fishermen using fishing roads. Also, on 28th of May, 2005, on the lake "Savsko jezero" (N 44?47'20.1??, E 20?24'54.6??), we collected two specimens with gill nets. They were held in an aquarium until the 20th of June, when they were analyzed. Their weight (W) was 48.8 g and 97.5 g, their standard length (Ls) 145 mm and 183 mm, respectively.

Additional information on Meloidogyne polycephannulata and its proposal as a junior synonym of M. incognita

Nematology ◽  
2019 ◽  
Vol 21 (2) ◽  
pp. 129-146
Author(s):  
Jessica M.S. Monteiro ◽  
Vanessa S. Mattos ◽  
Marcilene F.A. Santos ◽  
Ana C.M.M. Gomes ◽  
Valdir R. Correa ◽  
...  
Keyword(s):  
Morphological Variability ◽  
Junior Synonym ◽  
Valid Species ◽  
Bootstrap Support ◽  
Nominal Species ◽  
Aflp Data ◽  
Morphometric Characters ◽  
Additional Information ◽  
Phylogenetic Studies ◽  
Type Population

Summary The type population of Meloidogyne polycephannulata is synonymised with M. incognita based on morphological and morphometric characters, as well as biochemical, molecular and phylogenetic studies. Morphological variability and a wide host range were reported for M. incognita during its first description and later re-description. Meloidogyne polycephannulata was described in Brazil from specimens collected in a carrot field (type population). The esterase phenotype (Est) characterised for this species was identical to the phenotype Est I2 of M. incognita, the most ubiquitous phenotype used for diagnostics. Morphological and morphometric characters of the descriptions of the two nominal species showed major similarities, as well as variability within the range of variation detected in M. incognita. In PCR assays, three SCAR markers species-specific for M. incognita (incK14 F/R, Mi/FR and incB06 F/R) amplified the same fragments of 399 bp, 955 bp and 1200 bp, respectively, for populations in both species. In phylogenetic studies based either on concatenated sequences of ITS1-5.8S-ITS2, D2-D3 rRNA, mitochondrial COII regions or on RAPD and AFLP data, the populations of both species grouped in the same clade with high bootstrap support. Altogether, these results provide congruent evidence that the M. polycephannulata type isolate deposited at the Embrapa Cryopreserved National Collection of Root-knot Nematodes is not a valid species but rather a junior synonym of M. incognita.

Morphological variation in Xenoxybelis boulengeri (Procter, 1923) (Serpentes, Xenodontinae, Philodryadini)

Zootaxa ◽  
2008 ◽  
Vol 1743 (1) ◽  
pp. 53 ◽  
Author(s):  
ANA LÚCIA DA COSTA PRUDENTE ◽  
MÁRCIO ANDRÉ AMORIM DA SILVA ◽  
WÁLDIMA ALVES DA ROCHA ◽  
FRANCISCO LUÍS FRANCO
Keyword(s):  
Morphological Variation ◽  
Rare Species ◽  
Original Description ◽  
External Morphology ◽  
Time Analysis ◽  
Morphometric Characters ◽  
Permit Allocation ◽  
Scientific Collections ◽  
First Time ◽  
Molecular Characters

The genus Xenoxybelis contains two species, X. argenteus and X. boulengeri, characterized by semi-arboreal habits and an extremely thin rostral area, classified in the subfamily Xenodontinae (Colubridae). Xenoxybelis boulengeri is considered a rare species and is poorly represented in scientific collections. Its external morphology is known only from the original description and seven other specimens. In this study, twenty additional specimens were examined from the Brazilian states of Acre, Amazonas and Rondônia. Variation in meristic and morphometric characters are described, and new characters are incorporated in a revised diagnosis of the species. Illustrations and a description of the hemipenes of X. boulengeri are presented for the first time. Analysis of morphological and molecular characters permit allocation of Xenoxybelis to the tribe Phylodryadini, together with Ditaxodon, Philodryas, Pseudablabes and Tropidodryas.

Boom-bust like dynamics of invasive black bullhead (Ameiurus melas) in Lake Sava (Serbia)

2019 ◽  
Vol 26 (2) ◽  
pp. 153-164 ◽  
Author(s):  
Milica Jaćimović ◽  
Mirjana Lenhardt ◽  
Jasmina Krpo-Ćetković ◽  
Ivan Jarić ◽  
Zoran Gačić ◽  
...  
Keyword(s):  
Black Bullhead ◽  
Ameiurus Melas

Scavenging behaviour and size‐dependent carcass consumption of the black bullhead ( Ameiurus melas )

2020 ◽  
Vol 97 (4) ◽  
pp. 1113-1119
Author(s):  
Bálint Preiszner ◽  
István Czeglédi ◽  
Gergely Boros ◽  
András Liker ◽  
Bernadett Kern ◽  
...  
Keyword(s):  
Black Bullhead ◽  
Size Dependent ◽  
Ameiurus Melas

scholarly journals Feeding activity of the cayenne pompano Trachinotus cayennensis (Cuvier 1832) (Perciformes, Carangidae) in estuaries on the western coast of the state of Maranhão, Brazil

2019 ◽  
Vol 79 (2) ◽  
pp. 311-320
Author(s):  
A. C. L. Castro ◽  
J. W. J. Azevedo ◽  
H. R. S. Ferreira ◽  
L. S. Soares ◽  
J. R. Pinheiro-Júnior ◽  
...  
Keyword(s):  
Size Range ◽  
Eating Habits ◽  
Feeding Activity ◽  
The State ◽  
Western Coast ◽  
Ontogenetic Changes ◽  
Importance Index ◽  
Size Groups ◽  
Subsequent Calculation ◽  
Feeding Plasticity

Abstract The present paper addresses the feeding activity of Trachinotus cayennensis, collected in Lençóis Bay (1°18’S – 1°19’S; 44°51’W – 44°53’W) on the western coast of the state of Maranhão, Brazil. Sampling was conducted between June 2012 and June 2013 using driftnets with stretch mesh sizes from 95 to 100 mm. A total of 205 individuals (114 females and 91 males) were analyzed. Statistically significant differences in the sex ratio were found in June, September and December 2012. Food items were analyzed based on frequency of occurrence and volumetric method, with the subsequent calculation of the alimentary importance index. Three size groups were defined to determine possible ontogenetic changes in eating habits based on the size range of the individuals collected: I (˂ 29 cm), II (29.1 to 37.0) and III (≥ 37.1). Eleven food item categories were identified: mollusks, polychaetes, crustaceans, nematodes, insects, algae, bryozoans, ophiuroids, fishes, vegetal matter and sediments. The variety of items in the diet of T. cayennensis indicates considerable feeding plasticity and opportunistic behavior. Seasonal variations influenced the feeding pattern of the species, with greater feeding activity in the dry season. The considerable availability of resources in estuarine habitats of the western coast of Maranhão constitutes another factor that influences the feeding behavior of this species.

Morphological Variability and Molecular Identification ofUncinariaspp. (Nematoda: Ancylostomatidae) from Grizzly and Black Bears: New Species or Phenotypic Plasticity?

2015 ◽  
Vol 101 (2) ◽  
pp. 182-192 ◽  
Author(s):  
Stefano Catalano ◽  
Manigandan Lejeune ◽  
Bradley van Paridon ◽  
Christopher A. Pagan ◽  
James D. Wasmuth ◽  
...  
Keyword(s):  
New Species ◽  
Phenotypic Plasticity ◽  
Molecular Identification ◽  
Morphological Variability ◽  
Black Bears

Bioaccumulation of PCBs from Sediments by Oligochaetes and Fishes: Comparison of Laboratory and Field Studies

1992 ◽  
Vol 49 (10) ◽  
pp. 2080-2085 ◽  
Author(s):  
Gerald T. Ankley ◽  
Philip M. Cook ◽  
Anthony R. Carlson ◽  
Daniel J. Call ◽  
Julie A. Swenson ◽  
...  
Keyword(s):  
Pimephales Promelas ◽  
Field Studies ◽  
The Other ◽  
Fathead Minnows ◽  
Lumbriculus Variegatus ◽  
Tissue Concentrations ◽  
Test Species ◽  
Black Bullhead ◽  
Study Laboratory ◽  
Ameiurus Melas

Fathead minnows (Pimephales promelas) and oligochaetes (Lumbriculus variegatus) were exposed in the laboratory to sediment samples from the lower Fox River/Green Bay, and their bioaccumulation of PCBs was compared with PCB concentrations in synoptic collections of fish (black bullhead, Ameiurus melas) and oligochaetes (primarily Limnodrilus sp.) from the field. Total PCBs and PCB homologues (expressed as lipid-normalized tissue concentrations/organic carbon-normalized sediment concentrations) were qualitatively and quantitatively similar in the laboratory-exposed and field-collected oligochaetes. PCB concentrations in A. melas generally were greater than in any of the other test species, due possibly to differences in exposure (e.g. biomagnification) compared with the other organisms. PCB concentrations in P. promelas were consistently smaller than in any of the other species investigated. These results indicate that, under the exposure regime used in this study, laboratory tests with L. variegatus can provide a reasonable quantitative estimate of the bioaccumulation of PCBs in field populations of oligochaetes. However, the use of P. promelas in laboratory sediment tests may result in significant underprediction of the exposure of indigenous benthic invertebrates and fishes to bioaccumulable contaminants.

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