Reproduction and Development in Annelida
2 546 kr
2 546 kr
Ons, 26 feb - mån, 3 mar
Säker betalning
14-dagars öppet köp
Säljs och levereras av
Adlibris
Produktbeskrivning
This book is a concise informative elucidation of all aspects of reproduction and development in annelids covering from arenicola to tubifex. Annelids flourish between 4,900 m depth to 2,000 m altitude; some of them occur in unusual habitats like hydrothermal vents and subterranean aquatic system (stigobionts). A few have no gut and acquire adequate nutrients through osmotrophism and/or engaging symbiotic microbes. In the absence of exoskeleton to escape predation, the 17,000 speciose annelids have explored bewildering modes of reproduction; not surprisingly, 42–47% of them are brooders. With 13,000 species, polychaetes are gonochores but some 207 species of them are hermaphrodites. Clitellates are all hermaphrodites; of them, 76 species are parthenogens, of which 56 are earthworms.
Regenerative potency of annelids ranges from an organ to an entire worm from a single ‘seminal’ segment. The head, tail and both together can be regenerated 21, 42 and 20 times, respectively. However, the potency is limited to ~1% of polychaetes and < 2%="" of="" oligochaetes.="" in="" oligochaetes,="" the="" chloragogue="" temporally="" separates="" regeneration="" and="" reproduction="" but="" sedentary="" polychaetes="" undertake="" them="" together="" at="" the="" reduced="" reproductive="" output.="" only="" 79="" polychaete="" and="" 111="" oligochaete="" species="" have="" the="" potency="" for="" clonal="" reproduction.="" within="" families,="" the="" potency="" ranges="" from="" 2%="" in="" spionids="" to="" 54%="" in="" naidids.="" epitoky,="" a="" spectacular="" and="" unique="" phenomenon,="" involves="" the="" transformation="" from="" benthic="" to="" meroplanktonic="" reproductive="" morphism.="" it="" occurs="" in="" 106="" errant="" polychaete="" species.="" the="" larger="" glycerides,="" nereidids="" and="" eunicids="" use="" muscular="" energy="" to="" climb="">< 50="" m="" vertical="" distance.="" but="" the="" small="" phyllodocids="" and="" cteniodrilids="" may="" reduce="" buoyancy="" to="" climb="" 1,000–4,000="" m="" vertical="">
Heterogamatic sex determination is reported to occur only in six polychaete species, although karyotype is known for 83 annelid species. In temperate polychaetes, a dozen neuroendocrines, arising mostly from the ‘brain’ regulates reproductive cycle. A complete chapter devoted to vermiculture, (i) recognizes the fast-growing candidate species, (ii) distinguishes 'layers' from 'brooders', (iii) indicates that the harvest of oligochaetes may reduce the input of nitrogenous fertilizer in the ricefield, and (iv) explores the scope for increasing wealth from waste.
Artikel.nr.
a9128815-1a30-40c8-83b0-83c80b27f0e7
Reproduction and Development in Annelida
2 546 kr
2 546 kr
Ons, 26 feb - mån, 3 mar
Säker betalning
14-dagars öppet köp
Säljs och levereras av
Adlibris
Liknande toppsäljare
![PS4 Handkontroll DoubleShock Trådlös för Play-station 4 PS4 Handkontroll DoubleShock Trådlös för Play-station 4](https://cdn.cdon.com/media-dynamic/images/product/cloud/store/Gaming/000/132/070/624/132070624-270856748-11453-org.jpg?cache=133355228734817854&imWidth=600)
PS4 Handkontroll DoubleShock Trådlös för Play-station 4
269 kr
Tidigare lägsta pris:
299 kr
![Apple AirPods (andra generation) med Lightning-laddningsetui Apple AirPods (andra generation) med Lightning-laddningsetui](https://cdn.cdon.com/media-dynamic/images/product/cloud/store/Headphones/000/163/274/019/163274019-298300416-11453-org.jpg?cache=133628499919416626&imWidth=600)
Apple AirPods (andra generation) med Lightning-laddningsetui
1 494 kr
![Öronkuddar för Bose QuietComfort - QC35/QC25/QC15/AE2 Hörlurar Svart Öronkuddar för Bose QuietComfort - QC35/QC25/QC15/AE2 Hörlurar Svart](https://cdn.cdon.com/media-dynamic/images/product/cloud/store/HeadphoneCushionsTips/000/101/200/802/101200757-274580938-11453-org.jpg?cache=133424767356314303&imWidth=600)
Öronkuddar för Bose QuietComfort - QC35/QC25/QC15/AE2 Hörlurar Svart
99 kr
![FENCHILIN Hollywood sminkspegel med belysning Spegel med lampor Bordsplatta Väggfäste Vit 58 x 46cm FENCHILIN Hollywood sminkspegel med belysning Spegel med lampor Bordsplatta Väggfäste Vit 58 x 46cm](https://cdn.cdon.com/media-dynamic/images/product/cloud/store/Mirrors/000/141/226/245/141226245-279720626-11453-org.jpg?cache=133566212752999159&imWidth=600)
FENCHILIN Hollywood sminkspegel med belysning Spegel med lampor Bordsplatta Väggfäste Vit 58 x 46cm
873 kr
Tidigare lägsta pris:
1 021 kr
![INF Öronkuddar för Bose QC35 I/II, QC25, QC15, QC 2 AE 2, AE 2i, AE 2w, SoundTrue, SoundLink INF Öronkuddar för Bose QC35 I/II, QC25, QC15, QC 2 AE 2, AE 2i, AE 2w, SoundTrue, SoundLink](https://cdn.cdon.com/media-dynamic/images/product/cloud/store/HeadphoneCushionsTips/000/085/037/159/85037159-150324494-11453-org.jpg?cache=133510564542992809&imWidth=600)
INF Öronkuddar för Bose QC35 I/II, QC25, QC15, QC 2 AE 2, AE 2i, AE 2w, SoundTrue, SoundLink
79 kr
Tidigare lägsta pris:
99 kr
![Elektriskt stötdämpande löpband—Svart Elektriskt stötdämpande löpband—Svart](https://cdn.cdon.com/media-dynamic/images/product/cloud/store/Treadmills/000/121/231/011/121231011-245930672-11453-org.jpg?cache=133225656761012458&imWidth=600)
Elektriskt stötdämpande löpband—Svart
1 999 kr
![INF Öronkuddar för AirPods Pro i 3 storlekar INF Öronkuddar för AirPods Pro i 3 storlekar](https://cdn.cdon.com/media-dynamic/images/product/cloud/store/Hearingprotection/000/138/743/460/138743460-278179524-11453-org.jpg?cache=133413987818492810&imWidth=600)
INF Öronkuddar för AirPods Pro i 3 storlekar
63 kr
Tidigare lägsta pris:
69 kr
![Citronsyra 2 kg hink Citronsyra 2 kg hink](https://cdn.cdon.com/media-dynamic/images/product/cloud/store/PastaRiceGrain/000/083/513/229/83513229-155680996-11453-org.jpg?cache=133047694876787175&imWidth=600)
Citronsyra 2 kg hink
189 kr
![Gadgetmonster Vlogging Kit - Komplett Vlogg-kit med LED-ringbelysning och golvstativ Gadgetmonster Vlogging Kit - Komplett Vlogg-kit med LED-ringbelysning och golvstativ](https://cdn.cdon.com/media-dynamic/images/product/cloud/store/DevelopingProcessingEquipment/000/141/398/879/141398879-279783775-11453-org.jpg?cache=133694209343653780&imWidth=600)
Gadgetmonster Vlogging Kit - Komplett Vlogg-kit med LED-ringbelysning och golvstativ
199 kr
![FENCHILIN Stor Hollywood sminkspegel med belysning USB Bordsskiva Väggfäste Vit spegel 80 x 58 cm FENCHILIN Stor Hollywood sminkspegel med belysning USB Bordsskiva Väggfäste Vit spegel 80 x 58 cm](https://cdn.cdon.com/media-dynamic/images/product/cloud/store/CompactMirrors/000/141/227/451/141227451-279723833-11453-org.jpg?cache=133597222108523274&imWidth=600)
FENCHILIN Stor Hollywood sminkspegel med belysning USB Bordsskiva Väggfäste Vit spegel 80 x 58 cm
1 421 kr
Tidigare lägsta pris:
1 611 kr
Rekommendationer för dig
![Laddare till Samsung 25W - Snabbladdare USB-C - Strömadapter+Kabel 1M Laddare till Samsung 25W - Snabbladdare USB-C - Strömadapter+Kabel 1M](https://cdn.cdon.com/media-dynamic/images/product/cloud/store/CellPhoneChargersBatteries/000/169/921/321/169921321-304067902-11453-org.jpg?cache=133680581886926332&imWidth=600)
Laddare till Samsung 25W - Snabbladdare USB-C - Strömadapter+Kabel 1M
99 kr
Tidigare lägsta pris:
119 kr
![INF Sovmössa nattmössa mullbärssilke Rosa INF Sovmössa nattmössa mullbärssilke Rosa](https://cdn.cdon.com/media-dynamic/images/product/cloud/store/ShoerCaps/000/136/447/100/136447099-276040487-11453-org.jpg?cache=133555651709939348&imWidth=600)
INF Sovmössa nattmössa mullbärssilke Rosa
169 kr
Tidigare lägsta pris:
189 kr
![Lash Lift Kit - Permanent Fransböjning Kit - Iconsign Original Lash Lift Kit - Permanent Fransböjning Kit - Iconsign Original](https://cdn.cdon.com/media-dynamic/images/product/cloud/store/EyeMakeup/000/159/233/776/159233776-295335279-11453-org.jpg?cache=133757002232182808&imWidth=600)
Lash Lift Kit - Permanent Fransböjning Kit - Iconsign Original
179 kr
![INF Styluspenna för iPad 2018-2023 VitiPad INF Styluspenna för iPad 2018-2023 VitiPad](https://cdn.cdon.com/media-dynamic/images/product/cloud/store/TouchScreenPens/000/111/746/957/111746957-221061623-11453-org.jpg?cache=133771627365687257&imWidth=600)
INF Styluspenna för iPad 2018-2023 VitiPad
199 kr
Tidigare lägsta pris:
249 kr
![Squid Game 2 Gonggi & Case Korean Squid Game 2 Gonggi & Case Korean](https://cdn.cdon.com/media-dynamic/images/product/cloud/store/DexterityGames/000/189/751/502/189751502-327070035-11453-org.jpg?cache=133811020671158694&imWidth=600)
Squid Game 2 Gonggi & Case Korean
99 kr
![INF Tillbehör för Roborock S5/S6 modeller 7 delar INF Tillbehör för Roborock S5/S6 modeller 7 delar](https://cdn.cdon.com/media-dynamic/images/product/cloud/store/Vacuumcleanersaccessories/000/132/840/189/132840189-273360132-11453-org.jpg?cache=133364743594460183&imWidth=600)
INF Tillbehör för Roborock S5/S6 modeller 7 delar
169 kr
Tidigare lägsta pris:
199 kr
![Fjärrkontroll Philips Smart TV med Netflix – Universell Fjärrkontroll Philips Smart TV med Netflix – Universell](https://cdn.cdon.com/media-dynamic/images/product/cloud/store/RemoteControls/000/110/356/670/110356670-210528478-11453-org.jpg?cache=133117859307063775&imWidth=600)
Fjärrkontroll Philips Smart TV med Netflix – Universell
129 kr
![RCA AV till HDMI Converter / Adapter 1080P Universal White RCA AV till HDMI Converter / Adapter 1080P Universal White](https://cdn.cdon.com/media-dynamic/images/product/cloud/store/RCAAdapters/000/133/821/520/133821520-274158522-11453-org.jpg?cache=133712430599057901&imWidth=600)
RCA AV till HDMI Converter / Adapter 1080P Universal White
99 kr
![UNIQ XL Hollywood Spegel med 15 LED-lampor och touch-funktion - sminkspegel med belysning - hollywoodspegel UNIQ XL Hollywood Spegel med 15 LED-lampor och touch-funktion - sminkspegel med belysning - hollywoodspegel](https://cdn.cdon.com/media-dynamic/images/product/cloud/store/CompactMirrors/000/170/782/669/170782669-305032315-11453-org.jpg?cache=133687043995434790&imWidth=600)
UNIQ XL Hollywood Spegel med 15 LED-lampor och touch-funktion - sminkspegel med belysning - hollywoodspegel
879 kr
Tidigare lägsta pris:
939 kr
![12-pack Oral-B Kompatibla Tandborsthuvuden 12-pack Oral-B Kompatibla Tandborsthuvuden](https://cdn.cdon.com/media-dynamic/images/product/cloud/store/ToothbrushReplacementHeads/000/140/589/002/140589002-279237085-11453-org.jpg?cache=133425593065673053&imWidth=600)
12-pack Oral-B Kompatibla Tandborsthuvuden
79 kr
Tidigare lägsta pris:
99 kr