Trophic status and helminth infracommunities of fish populations in Kashmir Himalayan lakes

Abstract

The present study considers the influence of the trophic status of three Kashmir Himalayan lakes on the patterns of helminth infracommunities in populations of three species of fish during 2006 to 2008. Data were collected from three lakes of differing trophic status in the Kashmir Himalayas, namely Anchar, a hyper(eu)trophic lake; Dal, a eutrophic lake; and Manasbal, a meso(eu)trophic lake. Three species of fish examined included the native fish Schizothorax niger Heckel and two exotic species--Carassius carassius (Linnaeus) and Cyprinus carpio Linnaeus. The analysis of data showed a clear habitat effect on the abundance pattern of helminth species, thus revealing lake-specific differences in parasite infracommunities of both S. niger and C. carassius. Helminth infracommunity richness was the highest in host populations from the Anchar lake compared to other two lakes. Low values in the Manasbal lake emphasize the low diversity of their helminth infracommunities. On the other hand, there was no observed pattern of community structure in the case of C. carpio in the three lake sites. However due to bias in sampling there was no distinct effect of fish body size on parasite infracommunity structure, although the present results do show that fish parasite data can be meaningful in diagnosing changes in the trophic condition of eutrophic lakes.

Diversity of parasites in Curimata incompta (Curimatidae), a host from Amazon river system in Brazil

“…However, in both studies, was similar dominance of I. multifiliis and overdispersion of the parasite species, but the diversity and species richness of parasites was higher for C. incompta. Differences in species richness and diversity of parasites may also be a result of the host's individual responses to parasitism and transmission rates, among other factors (Takemoto et al 2009;Tavares-Dias et al 2013;Shah et al 2014). Therefore, biotic factors such as the host immunity may have a differential effect on a fish-parasite environment system.…”

“…Parasites may cause alterations in population dynamics and in the behavior of their hosts, as well as influence the competition capacity in the predator-prey relation. Therefore, knowledge of the parasites' fauna of wild fish constitutes a biodiversity assessment tool, allowing a greater understanding of host biology and its relation to parasites, which can be environmental indicators (Takemoto et al 2009;Tavares-Dias et al 2013;Shah et al 2014). The present study investigated the host-parasite relationship in C. incompta from the Amazon river system (Brazil).…”

Nematofauna of red piranha Pygocentrus nattereri (Kner, 1958) (Characiformes: Serrasalmidae) from Amazonia, Brazil

“…The parasite community structure of fish is mostly influenced by host physiology, ecology and phylogeny (HOSHINO et al, 2016). Differences in species richness and diversity of parasites may also be a result of the host's individual responses to parasitism and transmission rates, among other factors (TAKEMOTO et al, 2009;TAVARES-DIAS et al, 2013;SHAH et al, 2014). Therefore, biotic factors such as the host immunity may have a differential effect on a fish-parasite environment system (NEVES et al, 2016).…”

Comportamiento De Refugio Y Actividad De La Acetilcolinesterasa Cerebral en Gambusia Punctata (Poey, 1854) (Poeciliidae) Por Plomo Biodisponible

“…Para evaluar el valor biológico en los ecosistemas, es necesario establecer un enfoque integrado de monitoreo ambiental sobre los propios parámetros físico-químicos de calidad en forma simultánea con el uso de algunos indicadores biológicos (Costa et al, 2017), como pueden ser el coeficiente de condición (Jurajda, 2009), reproducción mediante el índice gonadosomático (Marcogliese & Pietrock, 2017), tolerancia y resistencia hacia la parasitosis (Sitja, 2008;Shah et al, 2014), citotoxicidad y alteración del sistema inmunológico de los peces (Risjani et al, 2014), entre otros.…”