Guide to INVERTEBRATE ANIMALS by J. E. Webb, J. A. Wallwork, J. H. Elgood (auth.)

By J. E. Webb, J. A. Wallwork, J. H. Elgood (auth.)

Show description

Read or Download Guide to INVERTEBRATE ANIMALS PDF

Best zoology books

Freshwater Animal Diversity Assessment

This publication deals a finished examine of species- and genus-level range and chorology of the worldwide freshwater fauna up to now. It supplies a cutting-edge evaluation of the variety and distribution of Metazoa within the continental waters of the realm.

Human in Vitro Fertilization and Embryo Transfer

The births of greater than a hundred it appears basic babies at time period following pregnancies initiated by way of in vitro fertilization and embryo move testifies to the winning scientific program of insights bought from reviews in reproductive biology over the past two decades. In ladies, those stories have incorporated: 1) characterization of the adjustments in blood hormone profiles all through ovulatory menstrual cycles; 2) documentation of the hormonal composition of antral fluid in constructing and degenerating preovulatory follicles; three) correlation of those observations with the nation of oocyte maturation and the fertilizability of the oocyte; four) software of pharmacologic brokers for perturbing the traditional hormone profiles to control the variety of preovulatory follicles constructing and the time of ovulation; and five) improvement of non-invasi ve tools for tracking follicular improvement.

Dictionary of Invertebrate Zoology

An exhaustive dictionary of over 13,000 phrases with regards to invertebrate zoology, together with etymologies, note derivations and taxonomic category. Entries disguise parasitology, nematology, marine invertebrates, bugs, and anatomy, biology, and reproductive techniques for the subsequent phyla: Acanthocephala, Annelida, Arthropoda, Brachiopoda, Bryozoa, Chaetognatha, Cnidaria, Ctenophora, Echinodermata, Echiura, Entoprocta, Gastrotricha, Gnathostomulida, Kinorhyncha, Loricifera, Mesozoa, Mollusca, Nemata, Nematomorpha, Nemertea, Onychophora, Pentastoma, Phoronida, Placozoa, Platyhelminthes, Pogonophora, Porifera, Priapula, Rotifera, Sipuncula, and Tardigrada.

Beneficial Microorganisms in Agriculture, Aquaculture and Other Areas

This publication makes a speciality of using microorganisms on the subject of agriculture, aquaculture and similar fields, starting from biofertilizers to chook creation. the newest ideas also are incorporated to supply insights into the limitless potentials of microorganisms in those parts. person chapters discover subject matters akin to probiotics in chicken, biopurification of wastewater, changing agrowastes into value-added purposes and items, rice cultivation, surfactants and bacteriocin as biopreservatives, bioplastics, crop productiveness, biofloc, and the construction of usual antibiotics.

Extra resources for Guide to INVERTEBRATE ANIMALS

Sample text

Other protistaDs are typically uninucleate, or, where there is more than one, have nuclei of the same kind. Subclass Holotricha Ciliata in which:- 1. There is no adoral zone of membranelles (AZM) forming a wreath of long cilia or ciliated spiral peristome. Examples:- Paramecium, Prorodon. Subclass Spirotricha Ciliata in which:- 1. An adoral zone of membranelles (AZM) forming a wreath of long cilia is present, or it is replaced by a spiral peristome wound clockwise and ciliated on the inner surface.

2. The medusa is large and the polyp reduced or wanting. 3. The gonads are borne on the radial canals or on the floor of the gastric cavity. 4. The sense organs are modified tentacles (tentaculocysts). S. The members are solitary, although in a few cases budding takes place. Suborder Trachymedusae Trachylina in which:1. The tentacles arise from the margin of the umbrella. 2. The tentaculocysts are enclosed in pits or vesicles. 3. The gonads are borne on the radial canals. Examples:- Liriope, Carmarina, Limnocnida.

The body is discoid. 5. There is no exumbrella peduncle. 6. The medusa alternates with a scyphistoma. 7. The mouth is closed by the four bifurcated oral arms, each of which bears numerous oral canals leading from the gastric cavity and ending in sucking mouths. Examples:- Rhizostoma, Cassiopeia. Class Anthozoa (Actinozoa) Coelenterata in which:1. The polyp form is dominant and the medusoid form absent. 2. There is no medusa stage. 3. The enteron is subdivided by vertical septa. 4. The gonads are endodermal in origin.

Download PDF sample

Rated 4.31 of 5 – based on 14 votes