PEMUPUKAN KELAPA SAWIT

Kamis, 17 Desember 2009

Diposkan oleh MANDALA

1

Batrachobdella sp. (probably) picta (Verrill) - a freshwater leech

Batrachobdella, another proboscis leech (Rhynchobdellida), is not common in Alberta. In other regions of North America, Batrachobdella picta specimens have been reported taking their blood meal f...
by: Hugh Clifford


2

Dina sp. or Mooreobdella sp. - a worm leech

Two additional genera of worm leeches in Alberta are Dina and Mooreobdella. The two genera have three or four pair of eyes. Non-specialists can find them difficult to tell apart, especially prese...
by: Hugh Clifford


3

Erpobdella punctata (Leidy) - a worm leech

Erpobdella punctata is another worm leech. Adults are about the same size as adult Nephelopsis, but Erpobdella’s pigmentation, with two or four longitudinal rows of dark spots (in fresh spe...
by: Hugh Clifford


4

Glossiphonia complanata (Linnaeus) - a freshwater leech

Glossiphonia complanata is probably the most collected leech by pond-net sampling in Alberta. Specimens have three pairs of eyes and characteristic pigmentation. The photo specimen is about 20 mm...
by: Hugh Clifford


5

Helobdella fusca (Castle) - a freshwater leech

This is the blotched form of Helobdella fusca. The photo specimen is about 12 mm in length. Helobdellids’ one pair of eyes are sufficiently separated to distinguish both eyes. Photograp...
by: Hugh Clifford


6

Helobdella fusca (Castle) - a freshwater leech

Helobdella fusca, another rhynchobdellid, has different color forms. This is a striped form. Helobdella fusca specimens parasitize aquatic gastropods. The photo specimen is about 12 mm in length....
by: Hugh Clifford


7

Helobdella stagnalis (Linnaeus) - a freshwater leech

Helobdella stagnalis is one of most common leeches in Alberta. A small but conspicuous plate (scute), often red, on the anterior end of the dorsum will separate stagnalis from other leeches in Al...
by: Hugh Clifford


8

Lumbriculus sp. or Stylodrilus sp. - aquatic earthworms

Finally one that looks like an earthworm. The photo specimen is about 35 mm in length. A conspicuous reproductive feature of terrestrial earthworms, for example Lumbricus, is the clitellum, a per...
by: Hugh Clifford


9

Mollibdella grandis (Verrill); also called Haemopis grandis - a jawed leech

The other common jawed leech of Alberta is Mollibdella grandis. At one time both grandis and marmorata were in the genus Haemopis. The photo specimen is about 200 mm in length. Although neither P...
by: Hugh Clifford


10

Nephelopsis obscura (Verrill) - a worm leech

Another order of leeches found in Alberta is Pharyngobdellida. There is only one family, Erpobdellidae. Whereas rhynchobdellids usually have a small mouth through which a proboscis protrudes duri...
by: Hugh Clifford


11

Percymoorensis marmorata (Say); also called Haemopis - jawed leech marmorata

The third order of leeches is Gnathobdellida, sometimes called the jawed leeches. There is only one family in Alberta, Hirudinidae. Like pharyngobdellids, they also have a large mouth in the ante...
by: Hugh Clifford


12

Piscicola milneri (Verrill) - a fish leech

Most fish leeches are readily distinguished by their large anterior sucker (most also have a large posterior sucker), and of course usually being attached to fish. After taking a blood meal, the ...
by: Hugh Clifford


13

Piscicola punctata - a fish leech, on Brook trout

Piscicola punctata on a Brook trout, Salvelinus fontinalis from the Tay River, Alberta. Photograph: Wayne Roberts
by: Wayne Roberts


14

Placobdella ornata (Verill) - a freshwater leech

This large, leaf-like rhynchobdellid is parasitic on turtles, but can sometimes be collected by pond net sampling when the leech is not attached to the host. The photo specimen is about 28 mm in ...
by: Hugh Clifford


15

Placobdella papillifera (Verrill) - a freshwater leech

This placobdellid is also a parasite of turtles, but can also be free-living. The photo specimen is about 15 mm in length. Note the one pair of eyes, very close together. Placobdella papillifera ...
by: Hugh Clifford


16

Rhynchelmis elrodi Smith and Dickey - an aquatic earthworm

Rhynchelmis is a larger aquatic earthworm. Note the conspicuous proboscis Photograph: Randy Mandryk
by: Hugh Clifford


17

Specaria josinae (Vejdovsky) - a freshwater oligochaete

Freshwater oligochaetes, the aquatic earthworms, are found in all types of aquatic habitats. Some oligochaetes, for example, the red worm Tubifex and relatives, when they occur in large numbers...
by: Hugh Clifford


18

Theromyzon sp. - an aquatic leech

There are both aquatic and terrestrial leeches. Only aquatic leeches occur in Alberta. They are related to oligochaetes but lack setae and have suckers on the anterior and posterior regions of th...
by: Hugh Clifford


19

Coho Salmon - Oncorhynchus kisutch

Coho salmon (jack) head with leeches
by: Tony Pletcher


20

Tubifex Worm

Tubifex worms are aquatic oligochaet annelids. They are good indicators of near anaerobic or polluted conditions. They live in mud burrows with their heads down in the mud and their posteriors st...
by: Athabasca University



Reaksi: 

0 komentar:

Poskan Komentar

Mengenai Saya

Foto Saya
SINGKIL, NAD, Indonesia
SAYA ORANGNNYA SIMPLE DAN SELALU TERTARIK DENGAN HAL - HAL YANG BERBAU TEKNOLOGI DAN ILMU PENGTAHUAN. DAN SAYA TIDAK SUKA DENGAN KEKERASAN SERTA KEKEJAMAN. YANG PENTING MENURUT SAYA DAMAI ITU INDAH....

BERITA

Loading...