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175 results for “Tilapia”
Data from: On the occurrence of three non-native cichlid species including the first record of a feral population of Pelmatolapia (Tilapia) mariae (Boulenger, 1899) in Europe
Thermally influenced freshwater systems provide suitable conditions for non-native species of tropical and subtropical origin to survive and form proliferating populations beyond their native ranges. In Germany, non-native convict cichlids (Amatitlania nigrofasciata) and tilapia (Oreochromis sp.) have established populations in the Gillbach, a small stream that receives warm water discharge from a local power plant. Here, we report on the discovery of spotted tilapia (Pelmatolapia mariae) in the Gillbach, the first record of a reproducing population of this species in Europe. It has been hypothesized that Oreochromis sp. in the Gillbach are descendants of aquaculture escapees and our mtDNA analysis found both O. mossambicus and O. niloticus maternal lineages, which are commonly used for hybrids in aquaculture. Convict cichlids and spotted tilapia were most probably introduced into the Gillbach by aquarium hobbyists. Despite their high invasiveness worldwide, we argue that all three cichlid species are unlikely to spread and persist permanently beyond the thermally influenced range of the Gillbach river system. However, convict cichlids from the Gillbach are known to host both native and non-native fish parasites and thus, non-native cichlids may constitute threats to the native fish fauna. We therefore strongly recommend continuous monitoring of the Gillbach and similar systems.
FIGURE 2 in Description of a new species of Tilapia Smith, 1840 (Teleostei: Cichlidae) from Ghana
FIGURE 2. Scatter plot of scores of Principal Component II vs. Principal Component III, 95% confidence interval visualized as ellipses. Dots = "T." busumana; squares = "T. " sp.; 1-2 (squares) = MRAC 78-15-P-1-2 ("T. " sp. aff. busumana "Birim"), 3-5 (dots) = BMNH 1903.4.24.36-41 (syntypes Chromis busumanus Günther, 1903). The specimen (marked with the number 3) outside the 95% confidence interval is one of the syntypes, which is in poor condition.
FIGURE 3 in Description of a new species of Tilapia Smith, 1840 (Teleostei: Cichlidae) from Ghana
FIGURE 3. Preserved holotype of Tilapia pra sp. nov. (ZSM 36123), 83.5 mm SL; Ghana: Anum River, tributary to Pra, at Anumso village.
FIGURE 1 in Description of a new species of Tilapia Smith, 1840 (Teleostei: Cichlidae) from Ghana
FIGURE 1. Scatter plot of scores of Principal Component II vs. Principal Component III; 95% confidence intervals outlined as ellipses. Dots = "T." busumana; crosses = T. pra sp. nov.; squares = "T." sp. Numbered specimens are: 1-3 (dots) = BMNH 1903.4.24.36-41 (syntypes Chromis busumanus Günther, 1903); 4-5 (squares) = MRAC 78-15-P-1-2 ("T." sp. aff. busumana "Birim"), 6 (cross) = ZSM 36123 (holotype Tilapia pra sp. nov.) and 7 (square) = ZSM 39002 ("T." sp. aff. busumana "Tano"). The specimen of "T." sp. aff. busumana "Tano" has a very short caudal peduncle (9.3% of SL) and differs in mouth shape compared to all other specimens.
FIGURE 7 in Description of a new species of Tilapia Smith, 1840 (Teleostei: Cichlidae) from Ghana
FIGURE 7. Distribution of Tilapia pra sp. nov. (filled stars) and "T." busamana (Lake Bosumtwi) (open star) marked. (Map modified from Dankwa et al., 1999).
FIGURE 8. a in Description of a new species of Tilapia Smith, 1840 (Teleostei: Cichlidae) from Ghana
FIGURE 8. a) "Tilapia" sp. aff. busumana "Birim" (Foto: Horst Linke); b) "Tilapia" busumana (Foto: Anton Lamboj); c) "Tilapia " sp. aff. busumana "Tano" ZSM 39002.
FIGURE 5. a in Description of a new species of Tilapia Smith, 1840 (Teleostei: Cichlidae) from Ghana
FIGURE 5. a. Lower pharyngeal jaw of Tilapia pra sp. nov. (ZSM 36125, paratype). b. Bicuspid tooth of outer row of lower pharyngeal jaw of T. pra sp. nov. (ZSM 36125, paratype).
FIGURE 7 in Description of a rheophilic Tilapia species Smith, 1840 (Teleostei: Cichlidae) from Guinea with comments on Tilapia rheophila Daget, 1962
FIGURE 7. Map of western region of Guinea. Large black stars marking the two type locations of T. konkourensis sp. nov.; large open black star is type location as well as location of T. rheophila; small stars are locations of T. rheophila, filled star is type location of T. rheophila; filled polygon marks the location of T. sp. aff. louka "Samou". Map based on a free download from http://www.dmaps.com/carte.php?lib=guinea_Lankarte&num_car=3419&lang=de.
FIGURE 2 in Description of a rheophilic Tilapia species Smith, 1840 (Teleostei: Cichlidae) from Guinea with comments on Tilapia rheophila Daget, 1962
FIGURE 2. Bivariate plot of Principal Component II (morphometrics) vs. Principal Component I (meristics); visualized as convex hulls. Red crosses = T. konkourensis sp. nov. (n=3); pink filled squares = T. rheophila (n=18); Bold symbols refer to type specimens.
FIGURE 6 in Description of a rheophilic Tilapia species Smith, 1840 (Teleostei: Cichlidae) from Guinea with comments on Tilapia rheophila Daget, 1962
FIGURE 6. Outer shape and number of cusps of posterior pharyngeal teeth of lower pharyngeal jaw of A = T. louka (MRAC 92-59-P-3337-403), B = T. konkourensis sp. nov. (MRAC 81-20-P-52), C and D = T. rheophila (MRAC 81-20-P-53-54).
FIGURE 4 in Description of a rheophilic Tilapia species Smith, 1840 (Teleostei: Cichlidae) from Guinea with comments on Tilapia rheophila Daget, 1962
FIGURE 4. Outer shape of lower jaw teeth. A = T. louka (MRAC 92-59-P-3337-403), B = T. konkourensis sp. nov. (MRAC 81-20-P-51) and C = T. rheophila (MRAC 81-20-P-53-54).
FIGURE 1 in Description of a rheophilic Tilapia species Smith, 1840 (Teleostei: Cichlidae) from Guinea with comments on Tilapia rheophila Daget, 1962
FIGURE 1. Bivariate plot of Principal Component III (morphometrics) vs. Principal Component I (meristics); visualized as convex hulls. Red crosses = T. konkourensis sp. nov. (n=3); pink filled squares = T. rheophila (n=18); blue open suares = T. louka (n=34); green cross = T. sp. aff. louka "Samou" (n=1) and black dots = all remaining Tilapia (Coptodon) (n=444). Total number of specimens in the plot (n=500).
FIGURE 3. A in Description of a rheophilic Tilapia species Smith, 1840 (Teleostei: Cichlidae) from Guinea with comments on Tilapia rheophila Daget, 1962
FIGURE 3. A. Preserved holotype of Tilapia konkourensis sp. nov. (MRAC 81-20-P-51), 85.1 mm SL; Guinea: route Korela- Kondoya, River Konkouré. B. Drawing (by R. Kühbandner) of holotype of Tilapia konkourensis sp. nov. (MRAC 81-20-P-51), 85.1 mm SL; Guinea: route Korela-Kondoya, River Konkouré. C. Preserved paratype of Tilapia konkourensis sp. nov. (MRAC 81-20-P-52), 68.7 mm SL; Guinea: route Korela-Kondoya, River Konkouré.
FIGURE 5 in Description of a rheophilic Tilapia species Smith, 1840 (Teleostei: Cichlidae) from Guinea with comments on Tilapia rheophila Daget, 1962
FIGURE 5. Outer shape of lower pharyngeal bone of the holotype of T. konkourensis sp. nov. (MRAC 81-20-P-51).
FIGURE 3 in Checklist of the ancyrocephalids (Monogenea) parasitizing Tilapia species in Cameroon, with the description of three new species
FIGURE 3. Hard parts of Cichlidogyrus berminensis n. sp. Ap, accessory piece; He, heel; Pe, penis. DA, dorsal anchor. DB, dorsal transverse bar. VA, ventral anchor. VB, ventral transverse bar. I–VII, uncinuli (scale bar = 30 µm).
FIGURE 5 in Checklist of the ancyrocephalids (Monogenea) parasitizing Tilapia species in Cameroon, with the description of three new species
FIGURE 5. Hard parts of Scutogyrus vanhovei n. sp. Ap, accessory piece; He, heel; Pe, penis. DA, dorsal anchor. DB, dorsal transverse bar. VA, ventral anchor. VB, ventral transverse bar. I–VII, uncinuli (scale bar = 30 µm).
FIGURE 2 in Checklist of the ancyrocephalids (Monogenea) parasitizing Tilapia species in Cameroon, with the description of three new species
FIGURE 2. Measurements used to study the new species. A, anchor: a, anchor total length; b, anchor blade length; c, anchor shaft length; d, anchor guard length; e, anchor point length. DB, dorsal transverse bar: h, length of dorsal bar auricle; w, dorsal bar maximum width; x, dorsal bar length; y, distance between auricles; z, dorsal bar length Scutogyrus species. MCC, male copulatory complex: Ap, accessory piece length, Pe, penis total length; He, heel length. U, uncinuli length. VB, ventral transverse bar: w, ventral bar maximum width (Cichlidogyrus and Scutogyrus); x, length of one ventral bar branch. Vg, vagina: x, total length, w, maximum width.
FIGURE 1. A in Checklist of the ancyrocephalids (Monogenea) parasitizing Tilapia species in Cameroon, with the description of three new species
FIGURE 1. A: Cameroon within Africa. B: Area of study in Cameroon. C: Sampling locations: 1 Wum lake; 2 Lake Ejagham, 3 Cross River (Mamfé), 4 Lake Bermin, 5 Lake Barombi Kotto, 6 Lake Mboandong, 7 Wouri river, 8 Lake Ossa (general direction of Cameroonese Volcanic Line in transparent grey).
FIGURE 4 in Checklist of the ancyrocephalids (Monogenea) parasitizing Tilapia species in Cameroon, with the description of three new species
FIGURE 4. Hard parts of Cichlidogyrus gillesi n. sp. Ap, accessory piece; He, heel; Pe, penis. DA, dorsal anchor. DB, dorsal transverse bar. VA, ventral anchor. VB, ventral transverse bar. Vg, vagina. I–VII, uncinuli (scale bar = 30 µm).
Coding and noncoding genes involved in atrophy and compensatory muscle growth in Nile Tilapia
<p><strong>Electronic Supplementary Material</strong><strong>: </strong>Supplementary Table S1;Supplementary Table S2;Supplementary Table S3</p>
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