TY - JOUR
T1 - Ectoparasitic copepod infestation on a wild population of Neotropical catfish Sciades herzbergii Bloch, 1794
T2 - Histological evidences of lesions on host
AU - Fogel, Deborah
AU - Fuentes, José Luis
AU - Soto, Luz Marina
AU - Lafuente, Wilson
AU - Moncayo-Estrada, Rodrigo
AU - López, Carlos
N1 - Publisher Copyright:
© 2017 The Authors
PY - 2017/12
Y1 - 2017/12
N2 - We analyzed the infestation of the attached copepod species Lepeophtheirus sp on a wild population of Sciades herzbergii. The infestation and occurrence of attached copepods were related to body size, maturity and sex of host and the presence of lesions on fish skin were described. In 61 fish specimens (37 males and 24 females), total of 218 ectoparasitic copepods, including 204 mature and 14 immature stages were found. Copepods were attached to different regions of fish body without any regular pattern. The prevalence of infestation was 80.3% and intensity between 1 and 15 copepods/fish. No significant differences were found between sex or maturity and the presence of attached Lepeophtheirus sp. However, a contingency table including both sex and maturity status, and the total number of attached copepod per combined category showed a significant association. A positive correlation was found between body length of fish and intensity of infestation. Similarly, when comparing the infested fish according to group size, we found more copepods on larger individual. Attached copepods were associated with the presence of lesions visible to the naked eye. Histological analyses showed changes in cell architecture when sections of copepod-free tissues and attached copepods were compared.
AB - We analyzed the infestation of the attached copepod species Lepeophtheirus sp on a wild population of Sciades herzbergii. The infestation and occurrence of attached copepods were related to body size, maturity and sex of host and the presence of lesions on fish skin were described. In 61 fish specimens (37 males and 24 females), total of 218 ectoparasitic copepods, including 204 mature and 14 immature stages were found. Copepods were attached to different regions of fish body without any regular pattern. The prevalence of infestation was 80.3% and intensity between 1 and 15 copepods/fish. No significant differences were found between sex or maturity and the presence of attached Lepeophtheirus sp. However, a contingency table including both sex and maturity status, and the total number of attached copepod per combined category showed a significant association. A positive correlation was found between body length of fish and intensity of infestation. Similarly, when comparing the infested fish according to group size, we found more copepods on larger individual. Attached copepods were associated with the presence of lesions visible to the naked eye. Histological analyses showed changes in cell architecture when sections of copepod-free tissues and attached copepods were compared.
KW - Damages
KW - Fish
KW - Lepeophtheirus
KW - Parasitism
KW - Sea lice
KW - lesions
UR - http://www.scopus.com/inward/record.url?scp=85036550377&partnerID=8YFLogxK
U2 - 10.1016/j.ijppaw.2017.10.001
DO - 10.1016/j.ijppaw.2017.10.001
M3 - Artículo
C2 - 29379712
SN - 2213-2244
VL - 6
SP - 344
EP - 348
JO - International Journal for Parasitology: Parasites and Wildlife
JF - International Journal for Parasitology: Parasites and Wildlife
IS - 3
ER -