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INCUBATION LENGTH OF DABBLING DUCKS
We collected unincubated eggs from wild Mallard (Anas platyrhynchos), Gadwall (A. strepera), Blue-winged Teal (A. discors), and Northern Shoveler (A. clypeata) nests and artificially incubated them at 37.5°C. Average incubation lengths of Mallard, Gadwall, and Northern Shoveler eggs did not differ f...
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| Published in: | The Condor (Los Angeles, Calif.) Calif.), 2005-11, Vol.107 (4), p.926-929 |
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| container_end_page | 929 |
| container_issue | 4 |
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| container_title | The Condor (Los Angeles, Calif.) |
| container_volume | 107 |
| creator | Wells-Berlin, Alicia M Prince, Harold H Arnold, Todd W |
| description | We collected unincubated eggs from wild Mallard (Anas platyrhynchos), Gadwall (A. strepera), Blue-winged Teal (A. discors), and Northern Shoveler (A. clypeata) nests and artificially incubated them at 37.5°C. Average incubation lengths of Mallard, Gadwall, and Northern Shoveler eggs did not differ from their wild-nesting counterparts, but artificially incubated Blue-winged Teal eggs required an additional 1.7 days to hatch, suggesting that wild-nesting teal incubated more effectively. A small sample of Mallard, Gadwall, and Northern Shoveler eggs artificially incubated at 38.3°C hatched 1 day sooner, indicating that incubation temperature affected incubation length. Mean incubation length of Blue-winged Teal declined by 1 day for each 11-day delay in nesting, but we found no such seasonal decline among Mallards, Gadwalls, or Northern Shovelers. There is no obvious explanation for the seasonal reduction in incubation length for Blue-winged Teal eggs incubated in a constant environment, and the phenomenon deserves further study. |
| doi_str_mv | 10.1650/7742.1 |
| format | article |
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Average incubation lengths of Mallard, Gadwall, and Northern Shoveler eggs did not differ from their wild-nesting counterparts, but artificially incubated Blue-winged Teal eggs required an additional 1.7 days to hatch, suggesting that wild-nesting teal incubated more effectively. A small sample of Mallard, Gadwall, and Northern Shoveler eggs artificially incubated at 38.3°C hatched 1 day sooner, indicating that incubation temperature affected incubation length. Mean incubation length of Blue-winged Teal declined by 1 day for each 11-day delay in nesting, but we found no such seasonal decline among Mallards, Gadwalls, or Northern Shovelers. 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Average incubation lengths of Mallard, Gadwall, and Northern Shoveler eggs did not differ from their wild-nesting counterparts, but artificially incubated Blue-winged Teal eggs required an additional 1.7 days to hatch, suggesting that wild-nesting teal incubated more effectively. A small sample of Mallard, Gadwall, and Northern Shoveler eggs artificially incubated at 38.3°C hatched 1 day sooner, indicating that incubation temperature affected incubation length. Mean incubation length of Blue-winged Teal declined by 1 day for each 11-day delay in nesting, but we found no such seasonal decline among Mallards, Gadwalls, or Northern Shovelers. There is no obvious explanation for the seasonal reduction in incubation length for Blue-winged Teal eggs incubated in a constant environment, and the phenomenon deserves further study.</description><subject>Ambient temperature</subject><subject>Animal nesting</subject><subject>Aquatic birds</subject><subject>Bird nesting</subject><subject>Blue-winged Teal</subject><subject>Breeding of animals</subject><subject>Clutch size</subject><subject>dabbling ducks</subject><subject>Ducks</subject><subject>Eggs</subject><subject>Gadwall</subject><subject>Incubation</subject><subject>incubation length</subject><subject>Incubators</subject><subject>Mallard</subject><subject>Nesting</subject><subject>Northern Shoveler</subject><subject>Ornithology</subject><subject>Physical growth</subject><subject>Prairies</subject><subject>seasonal decline</subject><subject>SHORT COMMUNICATIONS</subject><subject>Waterfowl</subject><subject>Wildfowl</subject><issn>0010-5422</issn><issn>1938-5129</issn><issn>2732-4621</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><recordid>eNp1jz1PwzAYhC0EEqXAL2CIALGl-H1tx_HYpl8RUTKQzlbcOFIraIqdDvx7UgWxMZ1O9-hOR8g90AlEgr5KyXECF2QEisWhAFSXZEQp0FBwxGty4_2e9h45jshTmieb2bRMizzIFvmqXAfFMphPZ7MszVfBfJO8vd-Sq6b68PbuV8dks1yUyTrMilWaTLPQMIZdaCRvIsYssJpWWElla2u4kAIkq3jMtlBHAKamiLYxJlJbIailEEOMSgrLxuRx6D269utkfaf37ckd-kmNAChVJLGHXgZo61rvnW300e0-K_etgerzf33-r6EHHwZw77vW_VGcqogr1sfPQ2x2bXuw_7X8AO6PWtM</recordid><startdate>20051101</startdate><enddate>20051101</enddate><creator>Wells-Berlin, Alicia M</creator><creator>Prince, Harold H</creator><creator>Arnold, Todd W</creator><general>Cooper Ornithological Society</general><general>American Ornithological Society</general><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7QG</scope><scope>7SN</scope><scope>7XB</scope><scope>88A</scope><scope>8AO</scope><scope>8FD</scope><scope>8FE</scope><scope>8FH</scope><scope>8FK</scope><scope>8G5</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BEC</scope><scope>BENPR</scope><scope>BHPHI</scope><scope>C1K</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>FR3</scope><scope>GNUQQ</scope><scope>GUQSH</scope><scope>HCIFZ</scope><scope>LK8</scope><scope>M2O</scope><scope>M7P</scope><scope>MBDVC</scope><scope>P64</scope><scope>PADUT</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>Q9U</scope><scope>RC3</scope><scope>S0X</scope></search><sort><creationdate>20051101</creationdate><title>INCUBATION LENGTH OF DABBLING DUCKS</title><author>Wells-Berlin, Alicia M ; 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Average incubation lengths of Mallard, Gadwall, and Northern Shoveler eggs did not differ from their wild-nesting counterparts, but artificially incubated Blue-winged Teal eggs required an additional 1.7 days to hatch, suggesting that wild-nesting teal incubated more effectively. A small sample of Mallard, Gadwall, and Northern Shoveler eggs artificially incubated at 38.3°C hatched 1 day sooner, indicating that incubation temperature affected incubation length. Mean incubation length of Blue-winged Teal declined by 1 day for each 11-day delay in nesting, but we found no such seasonal decline among Mallards, Gadwalls, or Northern Shovelers. There is no obvious explanation for the seasonal reduction in incubation length for Blue-winged Teal eggs incubated in a constant environment, and the phenomenon deserves further study.</abstract><cop>Waco</cop><pub>Cooper Ornithological Society</pub><doi>10.1650/7742.1</doi><tpages>4</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | The Condor (Los Angeles, Calif.), 2005-11, Vol.107 (4), p.926-929 |
| issn | 0010-5422 1938-5129 2732-4621 |
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| source | Oxford Journals Online; JSTOR |
| subjects | Ambient temperature Animal nesting Aquatic birds Bird nesting Blue-winged Teal Breeding of animals Clutch size dabbling ducks Ducks Eggs Gadwall Incubation incubation length Incubators Mallard Nesting Northern Shoveler Ornithology Physical growth Prairies seasonal decline SHORT COMMUNICATIONS Waterfowl Wildfowl |
| title | INCUBATION LENGTH OF DABBLING DUCKS |
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