Development of hypobranchial muscles with special reference to the evolution of the vertebrate neck
Background The extant vertebrates include cyclostomes (lamprey and hagfish) and crown gnathostomes (jawed vertebrates), but there are various anatomical disparities between these two groups. Conspicuous in the gnathostomes is the neck, which occupies the
Noritaka Adachi +4 more
doaj +1 more source
Introduction to Zoology. T. H. Savory. New York: Philosophical Library, 1968. viii, 239 pp. $6.00. [PDF]
Excerpt: This book would delight the traditional zoologist as its emphasis is on systematics and evolution. primarily based on morphology. By the author\u27s own admission he neglects areas concerning histology, embryology, physiology and genetics, while
Nelson, Sigurd, Jr.
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Morphological responses to feeding in ticks (Ixodes ricinus)
Background Ticks can survive long periods without feeding but, when feeding, ingest large quantities of blood, resulting in a more than 100-fold increase of body volume.
J. Matthias Starck +6 more
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Plant genetic reseources: effective utilization [PDF]
Characterizing better understanding the genome organization and differentiating identity of genotypes based on their morphology and genome characteristics are vital determinants in their commercialization, management of germplasm repositories, and ...
Budak, Hikmet
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Marine nematode taxonomy in the DNA age: the present and future of molecular tools to access their biodiversity [PDF]
Molecular taxonomy is one of the most promising yet challenging fields of biology. Molecular markers such as nuclear and mitochondrial genes are being used in a variety of studies surveying marine nematode taxa.
da Silva, Maria Cristina +7 more
core +2 more sources
Cell interactome in sarcopenia during aging
Background The diversity between the muscle cellular interactome of dependent and independent elderly people is based on the interrelationships established between different cellular mechanisms, and alteration of this balance modulates cellular activity ...
Laura González‐Blanco +10 more
doaj +1 more source
Intermittent reproduction, mortality patterns and lifetime breeding frequency of females in a population of the adder (Vipera berus) [PDF]
Female adders (Vipera berus) are “capital breeders” that exhibit delayed maturity and intermittent reproductive frequency. We studied the attainment of sexual maturity, the initiation of annual breeding in mature females, the energy and mortality costs ...
Dirk Bauwens, Katja Claus
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Gonad development and reproduction in the monoecious species Chlorophthalmus agassizi (Actinopterygii: Aulopiformes: Chlorophthalmidae) from the Sardinian Waters (Central-Western Mediterranean) [PDF]
Background. The shortnose greeneye, Chlorophthalmus agassizi Bonaparte, 1840, is a species with a circumglobal distribution and is among the most abundant commercial fishes in some Mediterranean areas.
Cabiddu S, Cau A, Follesa MC, Porcu C
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Background Metatarsalgia of the lesser toes is a common cause of consultation in the podiatric clinic. However, there continues to be a controversy with respect to which is the best surgical technique, and there is few information in the literature ...
Miguel Lopez-Vigil +4 more
doaj +1 more source
Ecosystem size predicts eco-morphological variability in a postglacial diversification [PDF]
Identifying the processes by which new phenotypes and species emerge has been a long-standing effort in evolutionary biology. Young adaptive radiations provide a model to study patterns of morphological and ecological diversification in environmental ...
Adams, Colin E. +3 more
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