https://hal-insu.archives-ouvertes.fr/insu-01474123/document

Introducing global peat-specific temperature and pH calibrations based on brGDGT bacterial lipids

The sailfin catfish, a collection of several morphologically similar species belonging to the genus Pterygoplichthys of the Loricariidae from South America, has been widely introduced to tropical and subtropical freshwater environments worldwide and has caused serious ecological impacts. Although listed as one of the most serious invasive species, the taxonomic status of this fish in Taiwan has never been precisely described. In this study, we used morphological traits and mitochondrial DNA sequences to identify the fish which currently occur in Taiwanese rivers. Evidence from both datasets rejected the existence of P. multiradiatus, which was once the most widely applied name in local references. Pterygoplichthys gibbiceps and P. joselimaianus, 2 other species commonly appearing in the aquarium fish trade, were also not detected in the wild. Our results indicated that the fish occurring in Taiwanese rivers should be identified as P. pardalis and P. disjunctivus. Nevertheless, fish collected from the wild present a contiguous variation, among which roughly 28.3% could not be defined as either species and thus were grouped as an intermediate form. Morphological identification did not match the 2 mitochondrial clades. Compared to a native population of a pure-line P. pardalis collected from the Amazon River at Manaus, Brazil, exotic populations showed much wider morphological variations and higher genetic diversities. We put forth 2 hypotheses and 1 speculation to explain the current situation: (1) P. disjunctivus might just be a synonym of P. pardalis; (2) the exotic populations may have originated from hybridization between the 2 species or allopatric populations; and (3) superiority of the hybrid may have helped increase their fitness during invasions.

https://zoolstud.sinica.edu.tw/Journals/50.2/235.pdf

Identification of exotic sailfin catfish species (Pterygoplichthys, Loricariidae) in Taiwan based on morphology and mtDNA sequences.

Summary

This study describes the size at first sexual maturity, length–weight relationships (LWR) in relation to size at first sexual maturity, and Fulton’s condition factor (KF) of Eutropiichthys vacha in the Ganges River, northwestern Bangladesh. Sampling was done using traditional fishing gear including cast nets, square lift nets and conical traps during January and April, and July to December 2010. For each individual, total length (TL) was measured to the nearest 0.01 cm, and total weight (BW) was determined to the nearest 0.01 g. The gonadosomatic index (GSI) was calculated by the equation, GSI (%) = (Gonad weight in g/BW) × 100. The size at first sexual maturity of males and females was estimated by the relationship between gonadosomatic index and total length. A total of 583 specimens (289 males; 294 females) ranging from 8.30 to 27.00 cm TL and 3.16 to 159.50 g BW were analyzed. Sizes at first sexual maturity for male and female E. vacha were 13.15 and 14.00 cm TL, respectively. The analysis of covariance (ancova) revealed significant differences in slope and intercept between early and late phases for males (F = 4.532, P < 0.001) and females (F = 21.984, P < 0.001). The KF was not significantly correlated with TL for males (rs = 0.052; P = 0.378), but was highly correlated for females (rs = −0.165; P = 0.005). This study establishes a strong base for monitoring changes in length at first sexual maturity attributable to high fishing pressures or other reasons within the Ganges and associated river ecosystems.

Gonadosomatic index-based size at first sexual maturity of the catfish Eutropiichthys vacha (Hamilton, 1822) in the Ganges River (NW Bangladesh)

Summary
The present study describes the size at first sexual maturity, fecundity, length–weight (LWRs) and length–length relationships (LLRs) of the pool barb, Puntius sophore, using data obtained from different geographical locations in Bangladesh. A total of 905 specimens were caught by traditional fishing gear from March 2010 to February 2011. Additionally, a total of 121 females were collected from a commercial catch of the Padma River during June–July 2011 to estimate size at first maturity and to determine fecundity. Total length (TL), fork length (FL) and standard length (SL) were measured with digital slide calipers. Individual body weights (BW) were determined for all specimens, and gonad weights (GW) from 121 females were weighed to an accuracy of 0.001 g. The female gonadosomatic index (GSI) was calculated as [GSI (%) = (GW/BW) × 100]. Female size at first maturity was estimated using GSI and TL as indicators, and estimated as 5.00 cm TL in the Padma River. Specimens larger than 5.00 cm TL were used to determine fecundity. Mean total fecundity was 5300 ± 2700, ranging from 1580 to 16590. A positive exponential correlation was recorded between total fecundity and total length (r2 = 0.421). Relative fecundity ranged from 466 to 4036 (mean 1100 ± 580) in the Padma River. The LWR of pooled data for sexes combined was estimated as BW = 0.0155 TL2.98 as ancova revealed no significant differences in LWRs between rivers (P > 0.05). All LLRs were highly correlated (r2 > 0.983; P   0.05). These results will help in further studies on the population assessment of the species.

Size at first sexual maturity, fecundity, length–weight and length–length relationships of Puntius sophore (Cyprinidae) in Bangladeshi waters

Alexander Benjamin Orfinger and Daniel Douglas Goodding (2018) The suckermouth armored catfish genus Pterygoplichthys (Siluriformes: Loricariidae) includes popular aquarium fishes and constitutes one of the most successful freshwater invasive taxa, having achieved global distribution. To date, however, no comprehensive distributional record nor impact assessment exist for the spread of the genus, precluding informed management strategies. To provide these tools, our study aims to (1) provide an annotated checklist of species for this taxonomically confusing genus, (2) survey all available literature on the spread of the genus and summarize and map its invasive distribution, and (3) assess the overall socioeconomic and environmental impact of the genus on a global scale using the Generic Impact Scoring System (GISS). First, we provide an updated annotated species list. We then summarize seventy-one unique invasion records along with twenty-one instances of demonstrated impacts. Species of the genus Pterygoplichthys have now invaded five continents and twenty-one countries, and show an extended range in their native South America. Impact analysis yielded a GISS score of 18 to 19, indicating low to moderate levels of socioeconomic and environmental threats. However, to bolster the confidence in this analysis in future iterations, more research should aim to move beyond just "first records" and instead empirically evaluate species' effects on native ecosystems.

The Global Invasion of the Suckermouth Armored Catfish Genus Pterygoplichthys (Siluriformes: Loricariidae): Annotated List of Species, Distributional Summary, and Assessment of Impacts.

Native to South and Central America, many of the 700 species
of suckermouth armored catfishes (Loricariidae, Siluriformes) are popular with aquarium hobbyists as algae-controlling ornamental fishes and are therefore bred, shipped and sold around the world. They are characterized by bony plates covering the body, a pair of subterminal barbels, sucking lips, usually a spine in front of the adipose fin, and a flat-bottom body shape (Page and Burr, 1991), and are naturally occurring in a variety of freshwater habitats from sea level to 3000 m, often surviving in conditions that exclude other fishes. Members
of the genus Pterygoplichthys differ from most other
loricariids by having a large dorsal fin with 10 or more dorsal fin rays, which gives them their common name �sailfin catfish (Nico and Martin, 2001; Nelson et al., 2004; Page and Robins, 2006). Three species of Pterygoplichthys (Pterygoplichthys multiradiatus, Pterygoplichthys pardalis, and Pterygoplichthys disjunctivus) are closely related in that they lack an elevated supraoccipital process and have the supraoccipital bone posteriorly bordered by three scutes. Among these three species only P. multiradiatus (Hancock, 1898) has a pattern of uncoalesced dark spots on a light background (Page and Robins, 2006)

First record of the South American sailfin catfish Pterygoplichthys multiradiatus in Bangladesh

Summary

The present study aims to estimate the size at first sexual maturity and fecundity for female Gudusia chapra from the lower Ganges River, northwestern Bangladesh. A total of 250 female specimens, 3.60–13.70 cm in standard length (SL) and 1.00–43.60 g in body weight (BW), were collected during March–August 2006. The gonadosomatic index (GSI) for females was calculated by the equation, GSI (%) = (GW/BW) × 100. The size at first sexual maturity of females was estimated by the relationship between their gonadosomatic index and standard length. The specimen larger (≥8.00 cm in SL) than first size at sexual maturity was used for the estimation of fecundity. The size at first sexual maturity for female G. chapra was considered to be 8.00 cm SL in the Ganges River. The mean total fecundity was 20200 ± 6500 and ranged from 10800 to 36200. This study should be useful for fisheries biologists/managers to impose adequate regulations for sustainable-fishery management in the Ganges River and elsewhere in Bangladesh.

Gonadosomatic index-based size at first sexual maturity and fecundity indices of the Indian River shad Gudusia chapra (Clupeidae) in the Ganges River (NW Bangladesh)

It is generally agreed that the pattern of skin diseases differs in different countries, and within various regions of a country depending on social, economic, racial and environmental factors. Many workers have reported various patterns of skin diseases in different countries. So far, no such report is available in our country for Faridpur region. To fill the lacunae we decided to undertake a retrospective study of the skin disease pattern in this tertiary hospital of Faridpur, Bangladesh. All the newly diagnosed cases attending the OPD of Dermatology and Venereology, Faridpur Medical College Hospital, during the period of one year starting from 1st July 2007 to 30th June, 2008 were included in the study. Diagnosi s was done on clinical grounds and laboratory investigations were done whenever required. Eczema (19.2%), fungal infections (17.26%), scabies (15.16%) and pyodermas (7.59%) were the major skin diseases. STD's accounted for (0.73%) of the cases. Genodermatoses (0.01%) formed the minimal number of cases. Eczema was the commonest group of disorders. Out of the infective skin disorders fungal infections were the commonest group. Genodermatoses formed the least number of cases. Key words: Pattern of skin diseases; Infective skin diseases; Non-infective skin diseases DOI: 10.3329/fmcj.v5i1.6807 Faridpur Med. Coll. J. 2010;5(1):14-16

Pattern Of Skin Diseases In Patients Attending OPD Of Dermatology Department At Faridpur Medical College Hospital, Bangladesh

This cross- sectional study was conducted among the truck drivers at Daulatdia Ghat, Goalanda, Rajbari district. The objective of this study was to find out the knowledge and awareness about the risk of HIV/AIDS transmission among the truck drivers .Out of 226 respondents, 37.3% were within the age group 25 to 35 years. Most of the respondents (74%) were married and 44% were educated up to primary level. Half of the respondents (50%) had monthly income from taka 10,000 to taka 15,000 per month. From this study, it was found that 97% respondents had heard the name of HIV/AIDS, 61.8% had known about HIV/AIDS from media and newspaper. In respect of the route of HIV transmission, 39.8% of respondents thought that HIV is transmitted by sexual activities and 58.7% thought the disease is transmitted by syringe, transfusion. About 47.8% respondents thought that HIV can be detected from blood and 76% knew the fate of HIV/AIDS is death. Majority (82.5%) of the respondents obtained correct knowledge about HIV/AIDS transmission and 13.2% of them knew the place where test of HIV can be done.

Knowledge And Awareness About The Risk Of HIV/AIDS Among Truck Drivers Of A Selected Area

Eczematous dermatitis is very common in our country and all over the world. The aim of current study was to assess the burden, frequency and pattern of different eczema at outpatient department of Faridpur Medical College Hospital in the year 2009. Retrospective data were collected from medical records of patient. Patients of all ages & both sexes attending at the dermatology outpatient department of Faridpur Medical College Hospital in the year 2009 suffering from different eczema were included in this study. The frequency of eczema among patients attending at outpatient department of Faridpur Medical College Hospital was 12.8%, and the male to female ratio was almost 1:1. The most affected age group among patients was 0-5 years. Of all cases of eczema, 77.05% were endogenous and 22.52% were exogenous. The most common type of eczema was seborrhoeic dermatitis (27.17% of all cases), followed by contact dermatitis (20.00%) and Hand eczema (14.18%). Seborrhoeic dermatitis is commonest in young adult (21- 45 yrs), whereas atopic dermatitis is common in infant and children (0-10 yrs). Eczema is a public health problem in Faridpur, Bangladesh, and this necessitates prospective studies to determine its incidence and prevalence. Key words: Eczema; Atopic dermatitis; Faridpur DOI: 10.3329/fmcj.v5i2.6822 Faridpur Med. Coll. J. 2010;5(2):53-55

/pdf/pattern-of-different-eczema-among-outdoor-patients-attended-4dt4ykf83f.pdf

Akms Islam

Papers

First record of the South American sailfin catfish Pterygoplichthys multiradiatus in Bangladesh

Gonadosomatic index-based size at first sexual maturity and fecundity indices of the Indian River shad Gudusia chapra (Clupeidae) in the Ganges River (NW Bangladesh)

Pattern Of Skin Diseases In Patients Attending OPD Of Dermatology Department At Faridpur Medical College Hospital, Bangladesh

Knowledge And Awareness About The Risk Of HIV/AIDS Among Truck Drivers Of A Selected Area

Pattern Of Different Eczema Among Outdoor Patients Attended Faridpur Medical College Hospital, Faridpur, Bangladesh