Risk Assessment and Health Status of Shing (Heteropneustes fossilis) and Gulsha (Mystus cavasius) in the Southern Region of Bangladesh
Risk Assessment and Health Status of Shing (Heteropneustes fossilis) and Gulsha (Mystus cavasius) in the Southern Region of Bangladesh
Md. Jahid Hossain1*, Md. Hamidur Rahman2, Kanij Fatema Eti3, Fatema Jahan1, Bably Akter1
A map of the beel pabla showing the data collection area.
A) H. fossilis from Beel Pabla in January had many whitish lesions on an anterior portion of the body and an ulcer near the pectoral fin. B) H. fossilis in June having whitish patches of the body and loss of mucus. C) M. cavasius in January had a reddish lesion near the dorsal fin, a severe ulcer, and reddish color near the anus. D) M. cavasius in June had a swollen abdomen and loss of mucus.
(A)Section of skin and muscle of H. fossilis in January having epidermis lost ( ), dermis with hemorrhage (h), necrosis (n), vacuums (v), and muscle also necrosis (n) with wide vacuums (v). (B)Cross-section of skin and muscle of H. fossilis having epidermis partly missing ( ), dermis with necrosis (n) and hemorrhage (h), and muscle had wide vacuums (v) in January. (C)Photomicrograph of skin and muscle of H. fossilis in April showing epidermis normal, dermis split and necrosis (n) with hemorrhage (h), vacuums (v). (D)Section of skin and muscle of H. fossilis with epidermis and dermis almost normal in April. (E)Cross-section of skin and muscle of H. fossilis in June having epidermis and dermis almost normal and muscle with vacuums (v). (F)Photomicrograph of skin and muscle of H. fossilis in June with epidermis partly lost, dermis separated from muscle. H and E × 120.
(A)Section of skin and muscle of Mystus cavasius in January showing epidermis totally and dermis partly lost ( ), muscle with necrosis (n), vacuums (v), and hemorrhage (h). (B)Cross-section of skin and muscle of Mystus cavasius in January with epidermis lost ( ), dermis normal, and muscle with necrosis (n) and vacuums (v). (C)Photomicrograph of skin and muscle of Mystus cavasius in April having epidermis and dermis almost normal except vacuums (v) and necrosis (n). (D)Section of skin and muscle of Mystus cavasius with epidermis and dermis almost normal except vacuums (v) and necrosis (n) in April. (E)Cross-section of skin and muscle of Mystus cavasius in June having epidermis lost ( ), dermis separated from muscle with vacuums (v), and necrosis (n). (F)Photomicrograph of skin and muscle of Mystus cavasius in June with epidermis totally and dermis partly lost ( ). H and E × 120.
(A) Section of the gill of H. fossilis in January had lamellar missing ( ), hypertrophy (hy), and vacuums (v). (B)Cross-section of the gill of H. fossilis with hemorrhage (h), necrosis (n), and vacuums (v) in January. (C)Photomicrograph of the gill of H. fossilis in April with lamellar missing ( ). (D)Section of the gill of H. fossilis in April with almost normal structure. (E)Cross-section of the gill of H. fossilis in June had almost normal structure except lamellar missing. (F)Photomicrograph of the gill of H. fossilis in June with few lamellar missing ( ) H and E × 120.
(A) Section of the gill of Mystus cavasius in January showing lamellar missing ( ), hypertrophy (hy), and necrosis (n). (B)Cross-section of the gill of Mystus cavasius with lamellar missing ( ) and hemorrhage (h) in January. (C)Photomicrograph of an almost normal gill of Mystus cavasius in April. (D)Section of the gill of Mystus cavasius in April has lamellar missing. (E)A cross-section of the gill of Mystus cavasius in June showed a normal structure with hemorrhage. (F)Photomicrograph of an almost normal gill of Mystus cavasius in June. H and E × 120.
(A) Section of liver of H. fossilis in January having haemorrhage (h), necrosis (n), and vacuums (v). (B)Cross-section of liver of H. fossilis with necrosis (n) and vacuums (v) in January. (C)Photomicrograph of almost normal liver of H. fossilis in April from. (D)Section of liver of H. fossilis in April showing almost normal structure. (E)Cross-section of liver of H. fossilis with mild vacuums (v) in June. (F)Photomicrograph of liver of H. fossilis in June having necrosis (n) and vacuums (v). H and E × 120.
(A)Section of liver of Mystus cavasius in January having vacuums (v). (B)Cross-section of liver of Mystus cavasius with necrosis (n) and vacuums (v) in January. (C)Photomicrograph of liver of Mystus cavasius in April showing almost normal structure. (D)Section of liver of Mystus cavasius in April having more or less normal with vacuums (v). (E)A cross-section of the liver of Mystus cavasius in June showed more or less normal with hemorrhage (h). (F)Photomicrograph of almost normal liver of Mystus cavasius in June. H and E × 120.
