Evolution has been shown to be a critical determinant of ecological processes in some systems, but its importance relative to traditional ecological effects is not well known. In addition, almost nothing is known about the role of coevolution in shaping ecosystem function. Here, we experimentally evaluated the relative effects of species invasion (a traditional ecological effect), evolution and...

The impacts of predation and competition on life history, behavioral, and morphological traits are well established for many organisms, but effects on locomotor performance have received relatively little attention. We examined variation in sprint speed and critical swimming speed (U(crit), a measure of stamina) in the Trinidadian killifish (Rivulus hartii) across a gradient of ecological commu...

Decades of theory and recent empirical results have shown that evolutionary, population, community and ecosystem properties are the result of feedbacks between ecological and evolutionary processes. The vast majority of theory and empirical research on these eco-evolutionary feedbacks has focused on interactions among population size and mean traits of populations. However, numbers and mean tra...

Deploying mosquito predators such as the guppy (Poecilia reticulata) into bodies of water where mosquitoes breed is a common strategy for limiting the spread of disease-carrying mosquitoes. Here, we draw on studies from epidemiology, conservation, ecology and evolution to show that the evidence for the effectiveness of guppies in controlling mosquitoes is weak, that the chances of accidental gu...

Histological, morphological, genetic, and phylogenetic analyses of a Cryptosporidium molnari-like isolate from a guppy (Poecilia reticulata) identified stages consistent with those of C. molnari and revealed that C. molnari is genetically very distinct from all other species of Cryptosporidium. This study represents the first genetic characterization of C. molnari.

Tujuan penelitian ini adalah untuk mengetahui pengaruh pemberian tepung bunga marigold pada pakan komersil terhadap kecerahan warna ikan guppy. Penelitian dilaksanakan selama 50 hari, dengan metode eksperimental menggunakan Rancangan Acak Lengkap (RAL) yang terdiri atas 4 perlakuan dan 3 kali ulangan, yaitu: P1 (kontrol), P2 (tepung 0,5%), P3 1%), P4 (Tepung 1,5%). diawali pembuatan marigold, d...

Kualitas air merupakan faktor penting dalam pemeliharaan tanaman maupun ikan. Salah satu usaha untuk meningkatkan kualitas khususnya pada sistem akuaponik yaitu menggunakan probiotik. Probiotik EM4 Perikanan dan Tambak memiliki banyak kegunaan, seperti bakteri pengurai bahan organik, menekan pertumbuhan patogen penyakit, menstimulasi enzim pencernaan demi menjaga lingkungan kolam tambak. Ikan g...