From Oviparity to Marsupialism: Strange Modes of Reproduction in Amphibians
Journal Title: International Journal of Zoology and Animal Biology - Year 2018, Vol 1, Issue 2
Abstract
Amphibians are among the first vertebrates that have conquered the terrestrial environment. Their way of life is characterized by a compulsory aquatic larval phase and an adult terrestrial phase separated by a metamorphosis. Amphibians remain subservient to the aquatic environment throughout their lives. Several adaptive mechanisms regarding reproductive patterns have been established during biological evolution. Some species are oviparous; others are viviparous or direct-developing. Fertilization can be external or internal. Alongside these conventional breeding methods, some amphibians have developed particular forms of marsupialism or transport of eggs and larvae allowing them to at least partially free themselves from the aquatic environment
Authors and Affiliations
Exbrayat JM*
Conservation of Avian Diversity in India
Biodiversity conservation and climate change are most important contemporary issues. There is a pressing need to tackle these issues with utmost sincerity by biologists, nature conservanists, developmental agencies, r...
Occurrence of Methicillin Resistant Staphylococcus Aureus in Emerging Tertiary Care Hospital, Veraval, Gujarat, India
The present study was carried out to monitor the incidence of MRSA as an emerging pathogen in health care setting. In total of 36 clinical samples from men, women and children and also hand swabs of nursing staff and su...
Animal Models in Cancer Chemoprevention
Animal models are currently being used to check the efficacy of chemo preventive/chemotherapeutic agents. This is because the microenvironment of cultivated primary cells isolated from an animal organ/system is markedly...
The Potential use of Semiochemicals in Pest Suppression
Semiochemicals are natural substances produced and used by insects and plants to communicate. The different Semiochemicals based insect management techniques, such as monitoring, mating disruption, mass trapping, attrac...
Preliminary Assessment of Water Spinach (Ipomoea Aquatica) and Morning Glory (Ipomoea Asarifolia) Leaves Meals as Non-Conventional Fish Feed Stuffs
Assessment of nutritional qualities of aquatic weeds grown in Kainji Lake, Nigeria; Water spinach (Ipomoea aquatica) and morning glory (Ipomoea asarifolia) leaf-meals was carried out using standard laboratory methods. T...