Cichlid

Speciation and Evolution of Cichlids in East Africa Dr. Hoeh WIC Matthew S. Holcomb March 2, 2015   Introduction The East-African cichlids are a rather interesting and diverse group of fish, and have caught the eye of many scientists particularly because of the speed, diversity, and convergent patterns of their radiation (Yong-Hwee et al. 2012). For instance, there are 500+ species in just one lake, Lake Victoria, and an estimated 2,000+ species in total. The fish in lake Victoria, which is estimated

Feeding your Cichlids the right kind of food is very important if you want them to be as healthy as possible and to show their naturally brilliant colors. Often times, if not almost exclusively, Cichlids' color appears washed out because of a poor or incorrect diet. Not all fish foods are created equally, and therefore, it becomes necessary to use discretion when selecting the food you will feed them. You want to avoid foods that have any mammalian fat, and those containing high amounts of protein

young compared to the surrounding lakes in the region. Despite this, the haplochromine cichlid fish that inhabit this lake have shown rapid evolution. The lake was formed by a combination of tectonic movement and river water reversal of an “ancient drainage system” in the Pleistocene. The lake is also shallow compared to others in the area (a maximum depth of 69 meters), so it is unlikely that the resident cichlids could have survived in pools during the lake’s desiccation in the late Pleistocene (Coyne

Setting Up Your Aquarium Aquarium Size Matters When it comes to keeping African Cichlids you want to make sure that you have an aquarium that is big enough for the fish. A basic 20 gallon/~75 liter tank is not quite big enough to successfully keep your fish. While I have read that a 25 gallon/~95 liter tank is sufficient, I would not go with anything less then 29 gallons/~110 liters. The first cichlid tank I setup over 20 years ago was a 30 gallon/~113 liter flat back hexagon tank. The aquarium

Phenotypic Plasticity Phenotypic plasticity is when a genotype of an organism displays different phenotypes due to the conditions of the environment. It is important to understand why different organisms respond differently to changes in the environment and the ways they adapt to these changes. This paper focuses on whether these adaptations are due to either phenotypic plasticity or local adaptation. Since nothing is ever perfect, the paper also concentrates on the constraints of phenotypic plasticity

Name: Chloe Mulqueen Lecturer: Grace McCormack ID: 14470708 Module: Evolutionary Biology ZO317 Sexual selection in fish inhabiting great lakes Sexual selection can best be described by the definition given by Darwin himself. Sexual selection is “the advantage which certain individuals have over other individuals of the same species

As years go by, the population of humans increase, with the expansion of humans more land is needed to provide shelter and other necessities. Yet, humans do not comprehend that they also must consider the animals and plants lifestyle. Nowadays, people do not recognize the damages they do to society. As each year passes, each person’s changes the way they think and contributes a domino effect. When trees are cut down and other landmarks are used to build supermarkets or hotels, humans are taking away

Fishkeeping. Often portrayed in the media as one of two extremes: incredible, aquarium-worthy tanks with intricate setups and many species, or a lone goldfish in a bowl. While neither are particularly accurate, it shows what the general, uninformed public sees as fishkeeping. In reality, there are two types-freshwater and saltwater, with each requiring commitment and care. There are, however, major differences. Freshwater tanks require far less maintenance, and are nowhere near as delicate as a saltwater

Ultrastructural data on the spore of Myxobolus dermatobius Ishii, 1915 (Myxosporea: Myxobolidae) infecting eye of Nile-tilapia (Oreochromis niloticus) in Egypt NOSSEUR M . EL-SAYED Department of Parasitology , Faculty of Veterinary Medicine, Zagazig University, Egypt. E- mail:nosseur@gmail.com Abstract A total of 1000 cultured Nile-tilapia (Oreochromis niloticus) were collected from different governmental and private fish farms and examined for detection of myxosporean parasites infection

As Elmer introduced in one of his articles cichlids are one of the most species-rich vertebrates families which is reflected in the morphological adaptations. By analyzing transcriptome researchers can tell when and where each gene is turned on or turned off in the cells. It can also illustrate the gene expression by counting the number of transcripts. Researching about transcriptome is important toward health and the causes of many disease cause by different type of cells. Also gene duplication